The method of making sanitary paper products from newsprint paper (options), hygienic paper products and pulp and fiber for the manufacture of hygienic paper products (options)

 

(57) Abstract:

Paper products , such as thin paper towel, thin soft paper handkerchiefs, paper diaper and salfetochnyj paper is made from fibers of newspaper recycled paper containing oil type printing ink. A method of manufacturing a hygiene paper includes the suspension of newsprint paper, the introduction of surfactant and enzyme selected from the group consisting of cellulase, hemicellulase and lipase. Hygienic paper made from basic weighing 3.2-18.2 kg/stop. Sanitary paper product contains cellulose fibers, 80% of which are coarse fibers having a particle size in Kajaani more than 18 mg/100 m With this method selectively treated fiber newsprint waste and pollutants so that the fibers become softer when the sample to the touch, and the operation of paper machines this kind of paper pulp is better, allowing you to get better quality materials than was previously possible with the fibers of newsprint paper. 12 C. and 34 C.p. f-crystals, 1 Il., 3 table.

For each paper production process there is a correlation between the size of the fibers and cacino, expensive fibers, such as fibers of bleached Kraft pulp from timber North of soft rocks are thin and flexible and produce high-quality thin paper. On the contrary, when a mechanical method of fibrous pulp from softwood coarse fibers are formed with a high yield, typically used in the manufacture of newsprint. Grade newsprint contain the vast amount of coarse fibers with high output, usually fibers defibrating wood pulp (DDM), thermomechanical pulp (TMDM) and/or chemi-thermomechanical pulp (TMDM). Such coarse fibers for newsprint is usually subjected to intensive refining for the purpose of their destruction and fibrillatory that contribute to the hardening produced newsprint. This refinement changes the degree of grinding coarse fibers from fibers with a high degree of grinding to fibers with a low degree of grinding. If such refined, rough machined fiber used in the manufacturing process of thin paper, the resulting sheet has poor properties of thin paper because of his lack of softness. A recent thorough explanation Tulsa in canadian patent N 2.076.615.

Attempts to produce sanitary paper product type thin paper towel or salfetochnyj paper from the majority of fibers with high yield, as, for example, from wood mass TMDM, TMDM or DDM, was unsuccessful. Also was not very successful production of soft thin paper towel and salfetochnyj paper by recycling newsprint paper, partly because in the newspaper the paper predominant fibers are coarse fibers with a low degree of grinding and high yield. Another complicating factor in the production of soft thin paper and salfetochnyj paper by recycling newsprint paper is hindered operation of the paper machine due to poor dehydration associated with fibers with a low degree of grinding, and the problems caused by large amounts of "stuff" and other substances that are separated from the fibers and accumulate in the water system of the paper machine (circulating water). These substances make it difficult removing the thin cloth of paper with the drying cylinder type "Yankee" and consequently trigger the need for operation of the paper machine in modes that do not contribute to the achievement of the maximum and save part of the oil printing ink on the fibers, thereby attenuating fiber and giving them properties to separate that contribute to the operation of craigrownie on the paper machine. Therefore, in the present invention, in which use fiber recycled newsprint paper, possible previously unattainable performance soft thin paper towel and salfetochnyj paper.

The usual way of recycling newsprint paper with the aim of obtaining fibers, comparable to the type of fibers used for the initial manufacture of newsprint, known in the art as "ennobling paper" and usually involves transformation into a fibrous mass, flushing, usually surfactants, sorting, transforming into a soluble condition insoluble pollutants, usually by treatment with a strong alkali, washing, and bleaching fibers to eliminate the yellowing caused by the alkaline treatment.

By the usual method of recycling newsprint paper first operation is to divide the paper into individual fibers in water for the formation of a fibrous suspension and subsequent removal of printing inks and contaminants through a combination of various technological operations, kacinas cleaning remove large particles, as for example, paper clips, staples, plastic, etc. the Main purpose of the operations of washing and flotation is turning into a soluble state and/or suspension of contaminants in water and their removal from the fibers. To facilitate the transformation of contaminants in a soluble state and remove them from the fibers injected surfactant and alkali. When to facilitate the removal of contaminants using alkali, alkaline treatment there is some undesirable yellowing of the fibers. After or during the alkali treatment and rinsing the fibers usually bleach (e.g., hydrogen peroxide) to eliminate the yellowing caused by the action of alkali, or with the aim of obtaining the best fibers with a higher degree of whiteness than the fibers in the original paper. Purified, free from dirt and bleached fiber is usually mixed with the original fibers and then used in the paper production process, for which suitable properties of the fibers. Because the source fibers are fibers of newsprint, i.e. coarse fibers with a low degree of grinding and white, these recycled fiber most often re-ispolzuyutsa size and low degree of grinding, if they are not mixed with most of the higher quality fibers, for example, bleached Kraft pulp from wood Northern softwoods.

The conventional way of turning into a fibrous mass of newsprint paper with the aim of obtaining the processed fibers newsprint is usually carried out in Selenastrum the disintegrator when the consistency of 4-8% and the temperature 32-71oC for 20-60 min depending on the specific type of recyclable waste paper. Usually use caustic soda or other alkaline substances, such as sodium silicate, to increase the pH of the fibrous suspension to 9 10 to facilitate separation of the fibers by the fiber), and detach the ink and to separate the dirt from the fibers. At alkaline pH vegetable oils in inks omelet by transformation into the corresponding soap, while mineral oil emuleret combination of alkaline pH, soap and surface-active substances, which all improve the removal of oils while washing. To further facilitate the separation of the ink from the fiber, it is usual to add surface-active adjuvant for dip (at higher mn is s to produce a well-washed, high-quality fibers, causes swelling of the fibers and usually makes many soluble components. In addition to the saponification of vegetable oils contained in inks, caustic soda also causes saponification of natural organic acids normally present in newspaper waste paper, with the formation of the corresponding soap from omilteme substances. This not only makes the vegetable oil and water-soluble organic acids as produced Soaps, but thus obtained Soaps contribute to the removal of other contaminants, such as unsaponifiable oils inks (mineral oil). These substances are then removed from the fibers by washing and/or flotation after alkaline treatment.

A leading processor of newsprint paper - "garden state Paper" - in a recent magazine articles, one entitled as "The Big "D": Getting Rid of the Ink in Recycled Fiber" and published in the journal "Paper Age, 1991 Annual Recycling", page 23 and 50, and the other as "Recycling From the Newsprint Perspective", on pages 9, 12 and 13 of the same "1991, Annual Recycling", (Paper Age, 1991 Annual Recycling"), describes a method of processing and deinking of newsprint paper in the form of cleaning and screening, followed by a series of 3 leaching, improved introduction to the chemical tower as the complete removal of components, printing inks, including and oils. This is especially important because recycled fiber newsprint used for the production of clean newsprint, which without removing components of the printing ink would not have the appropriate degree of whiteness or strength.

Normal part of refining newsprint paper is the separation of the ink from the fibers and remove it, as a rule, through the operations of washing and flotation. Although traditional alkaline chemicals used in the processing of waste paper, are very effective at this elevation, they have a well-known disadvantage in lowering the degree of whiteness. Recent research work has been designed to eliminate the use of alkaline enhancing chemicals in the processes of dip.

Recent advances in the processing of waste paper (patent application in the UK 2.231.595 published 21.11.90, and entitled "Deinking Water Printed Paper Using Enzymes, and publication of North Carolina state University, entitled "Enzymatic Deinking of Flexograthic Printed Newsprint: Black and Colored Inks"), concerning the use of enzymes for pic as for example, cellulose, pectinase, xylanase and hemicellulase to improve the removal of printing ink without the negative influence of alkali treatment on the degree of whiteness along with the use of flotation to remove agglomerated particles of printing ink. As typographical oil paint is lighter than water, they are easily removed by flotation, especially taking into account the chemical substances introduced to facilitate the separation. Despite the fact that enzymes are used, it is a complete destruction of components of the printing ink contradicts the purpose of the present invention, which held oil to provide softness of tissue paper.

In the report submitted by John A. Hatmana, Thomas U. Joyce and D. I. Prasad at the Fifth international conference on biotechnology 27 - may 30, 1992, Kyoto, Japan, entitled "Enzyme elevation newspaper waste paper", describes research conducted at the forest faculty of the University of North Carolina, Raleigh, PCs North Carolina. This report described the use of acidic flotation improving systems that are only used chemicals were enzymes, chlorine is ellulose, and hemicellulase. There was an increase in the degree of grinding and white. However, an important difference is that described acidic flotation improving the system removes inks together with associated oils, which contradicts the present invention.

Recently for recycling newsprint paper has been applied technology transformation into a fibrous mass at high consistency (13-18%). This technology transformation into a fibrous mass use additional effect of abrasion and mixing between the fibers/pieces of paper at a higher consistency to break the fibers and facilitate the separation of the printing ink from the fibers. Temperature transformation into a fibrous mass, length and chemical additives, in General, the same as in the above-described method of turning into a fibrous mass at a lower consistency.

The present invention eliminates the traditional beautification waste but instead retains an important component of the ink, i.e., oil printing ink. The present invention is based on the discovery that if you do not remove the oil component ink with HFCs. To perform this task, use the composition of enzymes to separate a limited number of components of printing ink for their removal and/or redistribution of the fibers. In addition, by eliminating conditions of saponification, for example alkaline saponification gyrokinetic oils, such as vegetable oils, fiber components, such as hemicellulose, will not be able to vydeliajutsia of the fibers in the water system of the paper machine and cause difficulties with the operation of craigrownie.

According to the present invention proposes a method of modifying the coarse fibrous mass with a high output in the fiber, suitable for the manufacture of products type of soft tissue. Coarse fibrous mass with a low degree of grinding and high output, usually derived from newsprint paper, can be modified in accordance with the present invention for the production of soft thin paper through retention of the fibers or in certain types of contaminants typically found in newspaper waste paper, and the special treatment of polluted fibers enzymes during the swelling of the fibers in water and surface-active substance. Similar fiber is primary, coarse fiber with high output (for example, defibrating wood pulp, thermomechanical wood pulp and chemi - thermomechanical wood pulp) can be made suitable for the production of products type of soft tissue through the introduction of oils, usually found as contaminants in paper waste, and exposure to deliberately contaminated fibers and associated processing enzymes. According to the present invention allows the production of new fibers and hygienic paper products containing mostly processed by enzymes coarse fibers with high yield, with oil contaminants. When processing enzymes employ one or more enzymes selected from the group consisting of cellulase, hemicellulase, such as xylanase and lipase.

Described herein is a method of making sanitary paper products from a newspaper waste paper containing coarse pulp fiber and printed with ink containing oil, contains (a) making newsprint paper in the fibrous mass in water with stirring to produce a fibrous suspension with a consistency of between 3% and 12% and a pH below about 8.0 a; Rivonia fibrous suspension at a temperature above about 38oC for at least 15 min; and C) the use of the treated enzyme (and preferably also the surface-active substance) fibrous suspension as the main source of fiber in the papermaking process to produce sanitary paper products.

New sanitary paper product made from cellulose fibers, at least 80% of which are coarse fibers with sizes on Kajaani more than 18 milligrams per 100 meters, have a basis weight between 3.2 kg/stop and 18.2 kg/stop and normalized tensile strength (metric units) between 5.0 and 20.0 content from 0.2% to 2.0% of an oil selected from the group consisting of vegetable oils and mineral oils.

A new method of modifying cellulose fibers to improve their properties to form a thin paper towel and salfetochnyj paper contains an introduction to 0.2% to 2.0% mineral oil or vegetable oil in coarse cellulose fibers or before formation of such paper pulp, or when mixing directly in this paper the mass; b) introducing at a temperature below 60oC paper weight of an enzyme selected from the group consisting of cellulase, hemicellulase-active substance) when consistency between 3% and 12% and at a temperature between 38 and 60oC for at least 15 minutes

Improved cellulose fiber for the manufacture of hygienic paper products described here is a modified enzyme cellulose fiber having a particle size in Kajaani more than 18 mg/100 meters and containing between 0.2% and 2.0% of an oil selected from the group consisting of vegetable oils and mineral oils.

The drawing graphically depicts the relationship between the size of the fibers and soft thin paper, usually obtained by the methods of manufacturing a light thin paper with a dry keperawanan, and the excellent results obtained by the present invention. In tables 1, 2 and 3 presents the results of the experiments in examples 1, 2 and 3.

The present invention is based on the discovery that of the coarse fibers with high yield (i.e., fibers made mainly of mechanical separation of the wood fibers and usually containing at least 80 weight. % starting material) can be made of materials such very soft thin paper with properties comparable to the properties of thin paper, which is produced from expensive fibers of bleached Kraft pulp derived from wood North magiwa certain oil contaminants, usually located in the newspaper the paper, exposing the fiber newsprint paper containing such contaminants, processing enzyme and producing paper from such fibers contaminated with oil and modified enzyme. When using the present invention in practice, it is important that the fibers or had sufficient oils normally found in the newspaper the paper, before manufacture of such fibers thin paper or other sanitary paper products (e.g., thin salfetochnyj paper, thin paper towel and diaper and thin paper handkerchiefs). In addition, if the oil removed during the dip or missing on the primary fibers, it may be introduced into the fibers and fibers containing such oil can then be processed by the enzyme before making sanitary paper products from oiled or modified enzymes fibers to achieve the benefits of the present invention.

Newspaper inks typically use vegetable and mineral oils, which, as a rule, are of newspaper waste paper as components of printing inks. For uderzeniowy mass and its beautification. The preferred modification of the usual method of deinking waste paper is the elimination of saponification conditions under which vegetable oil (or any oil containing ester group) are transformed into soap. However, if the oil removed during the dip, they can be replaced before processing enzyme.

The method of implementation of the present invention, beginning with the use of newsprint paper, in General terms consists of: 1) the conversion of newsprint paper in the fibrous mass by its suspension in water under stirring; 2) treatment of fibrous suspensions obtained from paper pulp, enzyme, such as cellulase, xylanase or lipase, or a combination of such enzymes, and preferably in combination with surface-active substance; 3) maintaining the pH of the suspended fibrous masses below about 8.0 and 4) the use of suspended processed by the enzyme fibrous mass as part of the paper pulp in the process of production of hygienic paper, preferably, in the manufacturing process of thin paper. Although it is possible to carry out screening, cleaning, flotation and some washing fibrous suspension before her paper, thin salfetochnyj paper, thin soft paper handkerchiefs or thin paper diapers and towels), it is important that the fibrous mass remained significant number (more than half) of oil pollutants after these operations, screening, cleaning, flotation and leaching, or in any way recovered before processing enzyme and the production of paper.

The operation of the suspension and handling enzyme is preferably carried out in several stages, beginning with the suspension of newsprint paper with consistency between about 3% and 12% with surface-active substance or without it, and preferably at a temperature of fibrous suspension above about 38oC and preferably about 82oC and keeping it at a specified elevated temperature for at least about 15 minutes then adjust the pH and lower the temperature of the fibrous suspension to a temperature and pH suitable for the conditions of active processing enzyme. The preferred treatment conditions the enzyme is pH 4-7, and the temperature is below approximately 60oC and preferably above about 38oC. If the conversion of paper waste paper in the fibrous mass implementation of the fibrous mass and the processing enzyme. When turning into the fibre mass and the processing enzyme are combined into one stage, the enzyme with the surface-active substance or without it can be introduced into the water before adding paper recycled paper for its transformation into a fibrous mass, or after it. In the fibrous suspension is preferred to introduce surfactant types typically used for removal of contaminants in the processing of newsprint paper. You can use one or more enzymes, preferably selected from the group consisting of cellulase, xylanase and lipase. The fiber remain in contact with the enzyme for at least about 15 minutes and preferably for about 30 minutes Although it can be used over long periods of time contacting the pulp with an enzyme, this is not necessary. Periods of time contacting the fibrous mass and enzymes more than 30 minutes would be useful in smaller quantities used enzymes.

In the above process sequence is essential that the oil of the type commonly found in newspaper inks, and were in contact with the fibers on without being bound thereby, our theory, according to which the coarse fibers become very suitable for the manufacture of hygienic paper materials such as a soft thin paper, is that there is some interaction between the fibers, oils and enzymes, which is enhanced by the presence of surfactants. This interaction Energetichesky improves the properties of the coarse fibers for the formation of thin paper, regardless of the fact that the fibers remain rough.

The way of transformation in the fiber of the present invention preferably involves the transformation into a fibrous mass of newsprint paper (GM) when the consistency of 6-9% and elevated temperature in the preferred range 49-82oC. Duration of turning into a fibrous mass may vary within 15-60 minutes, the Suspension is then cooled to 49-60oC and move in capacitive Chan/mixing tank where the pH to regulate the magnitude in the pH range 4-7. Then, preferably before adding enzymes injected surfactant for dip, suitable for use at low pH. Introduce enzymes into the fibre suspension and give them the opportunity prorel 30 minutes Then adjust the pH of the suspension to a value equal to 7, after which the suspension is ready for paper production process. Additional screening is not required, although it is possible to conduct screening and/or centrifugal cleaning to remove large contaminants, such as paper clips, to protect the paper machine. Optional can be conducted limited flushing of the paper machine the pulp treated with enzymes and contaminated oils, when applied lepromatous fibrous mass in the composition of the paper pulp to the paper machine. If the fibrous suspension is washed to the paper machine, free-floating and dissolved material can be washed on the forming fabric of the paper machine and to remove from the paper machine circulating water using a flotation operation for the removal of contaminants from the circulating water of the paper machine. This can be done using a grid with side boards and a method of flotation dissolved air, as, for example, the apparatus for the clarification of the Croft, with the purpose of clarification of recycled water for reuse in the papermaking machine.

Fiber re the mu are light grey color. The materials of the thin paper made mostly from such fibers, preferred to paint in a more pleasant color. The dyes used in this invention must be water soluble, and because of the difficulty uniform dyeing fibers contaminated with oil, dyes must be substantive to cellulose fibers. They must also be cationic, i.e. they when dissolved in water will form a positively charged colored cations. These dyes are particularly suitable for dyeing wood pulp and unbleached pulp. Fibers such fibrous masses contain significant amounts of acid groups which can react positively charged cations with formation of salts. These dyes can be chosen from basic dyes, i.e., the group of dyes, are well known in the prior art, in which the main group is an integral part of the chromophore, or more of a new class of cationic direct dyes, in which the main group lies outside the resonance system of molecules. The dye is preferably administered in amounts in the range of 0.01 to 3%, and is most useful in the range of 0.05-0.5% by weight of air-dry fiber.

Suitable enzymes for use in the present invention should be selected from the group consisting of cellulase, hemicellulase (for example, xylanase) or lipase enzymes, but it is preferable to use a single enzyme each species combination.

Each type of enzyme is functionally focused on different components of the fibers of newsprint paper and/or contaminants normally associated with such fibers. Cellulase enzymes facilitate the removal of ink acting on the cellulose component of the fibers near the ink. Xylanase and other hemicellulase enzymes act on hemicellulose components of the fibers to enhance the degree of whiteness, while Laputa acts on the resin in the fibers and compositions of ink.

When is the best removal of printing ink, and also eliminated the so-called "Velcro". Velcro is a well-known contaminant in paper waste generated by adhesives, sticky photo-holding triangles labels, etc. and is known to cause problems in the runnability of the paper machine. The mixture is preferably selected from enzymes, which act on the printing paper in such a way that increase the softness of tissue paper and modify the contaminants so that they do not harm the operation of the paper machine. In addition, processed by the enzymes of the fibrous mass in accordance with the present invention will improve the efficiency of the paper machine and get excellent material at low cost.

Hemicellulase is a General term referring to various types of enzymes, each of which destroys certain types of compounds, commonly known as hemicellulose and in wood and other plant matter. Xylanase is preferred hemicellulase enzyme due to its activity against xylan - normal hemicelluloses. Components of hemicelluloses differ from plant to plant. The most common hemicelluloses Dreux is that of which carry short side chains, as, for example, 1,3-United - 1-arabinofuranose links or esterified 1,2-United - d-glucoronolactone links.

Also important, especially in the soft wood, are 1,4 -- D-glucomannan with randomly distributed glucose and Mennonite links bearing side chains, such as, for example, 1,6-United - D-galactopyranose links. Hemicelluloses differ from cellulose in three important respects. First, they contain several different sugar units, whereas cellulose contains only the 1,4 - a-D-glucopyranose units. Secondly, they have considerable branching of the chain, while cellulose is strictly linear polymer. Thirdly, the degree of polymerization of natural cellulose 10-100 times more than most of the hemicelluloses. The term "hemicellulose" means any specific class of enzymes that react with certain hemicellulose, and as such hemicellulase is not a specific class of enzymes, as a generic term, refers to a group of classes of enzymes. Xylanase is a class of enzymes that act on xylan and therefore covered by the General term "hemicellulose".

In the class who have numerous types of enzymes. From a practical point of view cellulase is the most suitable choice due to the possibility of its receipt from many different sources, such as from Aspergillis niger, Trichoderma reesei, T. viride, T. konigi, F. solani, Penicillium pinophilum, P. funiculosum.

It is preferable to use a cellulase, which has endo-echo glucanases functionality actions on amorphous and crystalline parts of cellulose, so that the enzyme can act anywhere on the surface of the pulp, where the attached ink.

The preferred cellulase is the product sold under the registered trademark "Cellulase 1.5 L" branch "Enzym Process division", "Bioindustrial group, Novo Nordisk a/s, Novo alle, 2880, Bagsvaerd, Denmark. "Cellulase 1.5 L represents a liquid preparation of cellulase produced by deep fermentation of a selected strain of the fungus "Trichoderma reesei". This enzyme catalyzes the decomposition of cellulose to glucose, cellobiose or more high molecular weight polymers of glucose. The relative amount of the resulting reaction products depend on the reaction conditions. "Cellulase 1.5 L has enzymatic activity in 1500 NCE/g and is a brown liquid with a tightly is NCE equal to the amount of enzyme, which under standard conditions decomposes carboxymethylcellulose on the recovery of hydrocarbons from reducing capacity corresponding to 1 micromol (mmol) of glucose per minute. Standard conditions are: substance - carboxymethylcellulose ("CMC Hercules-LFD"); temperature - 40oC; pH 4,8; duration of response - 20 minutes

Xylanase can be obtained from such a source, as, for example, A. Pullulans, or Stretomyces Lividans, or Steptomyces roseiscleroticus. Its purpose is to act on celanova part of lignocellulosic fibers, which, as I believe, connects the white pulp with brown lignin. Therefore, the effect on xianggelila enhances the removal of lignin, thus making the fiber more white. There is no need to xylanase was free of cellulase or was of any special biostone. In this respect, could be used without purification fungal enzyme (after the growth of fungi found numerous enzymes).

One preferred xylazin enzyme is an enzyme with the registered trademark "Pulpzyme HA", which is a drug xylanase derived from a selected strain of Trichoderma rees is rd, Denmark. "Pulpzyme HA" contains endo-1,4-beta-D-xylanase (EC 3.2.1.8), as well as Exo-1,4-beta-D - xylanase (EC 3.2.1.37) activity. In addition to its xylanase activity "Pulpzyme HA" to a certain extent, has a cellulose activity.

"Pulpzyme HA" (Pulpzyme HA") is a brown liquid preparation of xylanase having the activity of 500 CNS/g and containing approximately 300 units of endo-glucanase activity (EGE). One unit of xylanase activity (CNS) is defined as the amount of enzyme which under standard conditions (incubation at a pH of 3.8 and 30oC for 20 min) enzyme xylan larch wood for the recovery of hydrocarbons from reducing capacity corresponding to 1 mmol of xylose. One endo-glucanase unit (EGE) is defined as the amount of enzyme which under standard conditions (incubation at pH 6.0 and 40oC for 30 min) lowers the viscosity of a solution of carboxymethyl cellulose to the same extent as an enzyme standard that defines 2 EGE. "Pulpzyme HA" has a very low activity towards crystalline cellulose.

Another preferred xylanase is an enzyme with the registered trademark "Palps the convergence. It comes branch "Enzym Process division", "Bioindustrial group, Novo Nordisk a/s, Novo alle, 2880, Bagsvaerd, Denmark. It contains endo-1,4-beta-D-xylanase activity (EC 3.2.1.8) and virtually free of cellulase activity. "Pulpzyme HB" is on the market in the form of a brown liquid preparation with endo-xylanase activity 600 ECE/g, while one unit of endo-xylanase activity (ECE) is defined as the amount of enzyme which under standard conditions (incubation at pH 9.0 and 50oC for 30 min) enzyme xylan.

The lipase can be obtained from Psevdomonas fragi, Condida cylindricea, Micor javanicus, Pseudomonas fluorescens, Rhizopus javanicus, Rhizopus delemar, Rhizopus niveus, and various types Miehei, Myriococum, Humicola, Aspergillus, Hyphozyma and Bacillus. They have lipase, and esterase activities and is known to break down triglyceride in the wood resin on glycerin and fatty acids. As such lipase enzymes could act directly on the component of vegetable oils in printing ink. Glycerin as a product of lipase activity could contribute to the softening of the pulp.

A preferred lipase enzyme is the enzyme with the registered trademark "Resinosa AND 2", which predstavlja market Department "Enzym Process division", "Bioindustrial group, Novo Nordisk a/s, Novo alle, 2880 Bagsvaerd, Denmark in the form of a brown liquid preparation with an activity of 100 CLE/g Lipase activity is measured in kilo-lipase units (CLE). One CLE represents the amount of enzyme activity that liberates one millimoles butyric acid per minute from the emulsion tributyrin at a temperature of 30oC and a pH of 7.0. The analysis is performed on a system with constant pH, in which the released acid is continuously titrated by the addition of sodium hydroxide. During the titration of the enzyme is not limited by the substrate.

It was also possible to use other enzymes in combination with these three types of preferred enzymes. They are ligninase, laccase, pectinase, protease and mannanase. In addition, enzymes can be obtained from microorganisms which have an altered DNA and genetically engineered and which give more specific enzymes or in large quantities, helping to achieve better performance.

Preferred the following combination of enzymes with their quantities: 1,33 kg of cellulase per ton of pulp, 0.33 kg of xylanase per ton and 0.33 kg of lipase per ton. The total number in the NPA) up to a maximum of 25 kg per ton of pulp. However, especially preferred total number of all enzymes is 1-3 kg/ton. The preferred spacing of the content of each enzyme: cellulase - 0.25 to -10 kg/ton; xylanase 0.05 to 2.5 kg/ton and lipase 0.05 to 2.5 kg/ton.

The swelling of the fibers improves the activity of the enzyme, as it promotes the penetration of large molecules of the enzyme in the fiber. For the conversion of newsprint paper in the fiber can be used in high temperature (e.g. above ambient temperature and below 60oC), surfactant, and acid or alkaline chemicals to physically reveal patterns ligno-cellulosic fibers to allow the enzymes to better penetrate into these structures to perform their respective functions. If in the process of turning into a fibrous mass use of high temperature, for example above about 60oC, before the introduction of the enzymes used, the temperature should be lowered to values suitable for processing by enzymes. For most enzymes suitable temperature less than about 60oC.

The use of surface-active substances in the processing enzymes.

When combined surface is in surface-active substances to achieve synergies - this number is necessary for the disclosure of fiber, while a large amount is used to give the solubility of the oil by emulsification of oil pollutants. In terms of the weight of the fibers, the preferred amount of surfactant is from 0.025% to 0.1%. In the stage of processing enzymes is preferred to introduce non-ionic surfactants to enhance the enzymatic action to further improve softness when the sample to the touch. Preferred nonionic surfactant is marketed as "DI 600" (registered trademark) from high point of Kemikl Build.". "DI 600" is a non-ionic surfactant based alkoxysilanes fatty acids, specially developed for finishing newsprint deinking flotation method. You can use other nonionic surfactants well known in the art dip, as, for example, alkylphenolic ether of polyethylene glycol, such as surfactants series "Tergitol" (registered trademark) of the company "Union carbide", the condensation products of oxide alkylene and "Rhone Poulenc Incorporated"; arylalkylamines alcohol, for example surfactants series "Triton X" (registered trademark) company "Rohm and Haas", such as "Triton X-100". In some cases it is possible to use anionic surfactants depending on the contaminants present in paper recycling. Examples of suitable anionic surfactants are ammonium or sodium salts of sulfated ethoxylate derived from a linear primary alcohol with 12 to 14 carbon atoms, such as, for example, "Illfonic A or S" (registered trademark) of "Vista"; and condensates of sulfonated nattermannallee, such as Tamol CH" (registered trademark) company "Rohm and Haas". In some cases it is possible to use a cationic surfactant, an especially desirable and also when loosening. The number of suitable cationic surfactants include imidazole compounds, for example Quaternary ammonium compounds "Anasoft 16-7 and Saparin P" company "CIBA-GEIGY"; "Quaker 2001" company "Quaker Camels and Cyanates" company "American Cyanamid" (indicated by a registered trademark).

For the features in the printing of Newspapers, and in the composition of the ink for such printing. Mineral and vegetable oils are the most common types of oils used in the formulation of inks for newspaper printing. Mineral oil, also known as white mineral oil, alboline, kerosene, nujol, Taxol and lignite oil, usually classified as CAS 64742-46-7 N. Although in the past such oil could be obtained from various sources, in practice they are usually a fraction of a petroleum distillate with carbon chain comprising on average from about 10 to about 14 carbon atoms, and usually are a mixture of paraffinic hydrocarbons, naphthenic hydrocarbons and alkyl aromatic hydrocarbons. Such oils have a specific gravity ranging from about 0.8 to about 0.85 are viscosity at 38oC, equal 38-41 with the universal of Saybolt viscometer, and point initial boiling point of about 260oC. Vegetable oil type that are commonly used in the formulation of printing inks, can be obtained from various sources. Typical is the oil derived from soybeans and is known as soybean oil, oil of Chinese beans, oil from soybeans or just plain sees a saponification number of about 185-195 and have a solidification point of from about -15oC to about -8oC, a melting point of from about 21oC to about 32oC and iodine number of about 135-145. In the implementation in practice of the present invention can also use other sources of oil and other oils suitable for use in inks.

The amount of oil that should be on the fibers on the surface or in the structure of cellulose fibers), should be from about 0.2% to about 2%. Is preferred that the oil content was achieved not by saponification or by transformation into soluble oils condition on a newspaper waste paper during its transformation into a fibrous mass, and processing for use in the composition of the paper pulp. It is preferable that the surface-active substance in the case of its use was used in moderation in order not washed out of the oil during the preparation of newspaper waste paper for use in compositions for the manufacture of hygienic paper products However, as you can see from the examples, you can add the oil to a paper recycling or to the primary fibers, introducing the oil into the fibre mass before suspendirovanie or introducing the oil into the aqueous suspension of fibers, so that the oil was part of the con is vetelino, when used in practice of the present invention can be used primary fiber, and the present invention in its broadest sense is not limited to the recycling of newsprint paper as a source of fibers for the practice of this invention. According to the invention in its broadest sense requires the presence of oil on the fibers, or from about 0.2% to about 2.0% at a time when the fibers are treated with enzymes. Fibers containing oil, is subjected to the above processing enzymes and then used in the composition of the paper pulp.

Although a synergistic effect achieved with oils in the processing enzymes cellulose fibres, would be most useful for fibers with high yield, other cellulose fibers also would have hygienic properties, the improved method according to the present invention, so that such fibers could produce a softer and more flexible hygienic paper products. Such fibers include fibers as bleached and unbleached Kraft pulp from timber both the North and South of the hard and soft rocks, bleached and unbleached sulfite pulp in addition to bleached and labelenumii wood mass. Specific examples of such fibers are bleached chemi - thermomechanical pulp from softwood (HTMLMODE); bleached Kraft pulp from wood Northern softwoods (CDSMP); bleached recycled fiber (MF); bleached Kraft pulp from eucalyptus wood (CCDA); bleached Kraft pulp from wood southern soft rock (KDUMP) and bleached chemi-thermomechanical pulp from hardwoods (HTMLMAP).

Oil treated with enzymes fiber according to the present invention can be used in conventional paper production processes for the manufacture of sanitary paper products, including thin toilet paper, thin soft paper handkerchiefs, salfetochnyj paper and paper towels in accordance with any conventional method of manufacturing such products. The softness and bulk of such products would be enhanced with the use of oily and processed by the enzymes of the fibers of the present invention. Thanks to this improvement in bulk would increase the quality salfetochnyj paper made from the fibers of the present invention.

The present invention is based on the discovery that usually the to as it removes oil, which could be useful for improving the softness of products from thin paper. The softness of products from thin paper is difficult to measure or quantify, because softness is perceived by the user break to the touch, which, in addition to the bulk, is affected by the smoothness and other properties of the sheet surface. Developed tests with a break to the touch, and report here data on the sample to the touch is obtained using the following test.

Test with a break to the touch.

Of the commercially available cellulose having different properties to give softness to the product of the thin paper manufactured several different types of light thin paper with a dry keperawanan for use as standards and used them to build a numerical scale of softness. The softness of each standard thin paper has outlined the numerical value of the Most soft material, which is designated by the value of the sample to the touch, equal to 86, was a light thin paper with a dry keperawanan, which was made of 50% made by "Irving" Kraft pulp from timber Northern softwoods and 50% produced by Santa Fe Kraft pulp from wood avcal is used as OE wood pulp from softwood (HTMLMODE) and has been referred to the size of the sample to the touch, equal to 20 on the scale. From different fibrous masses and their mixtures other samples were made of light thin paper with a dry keperawanan for use as standards in the construction of a scale of "softness when the sample to the touch". These standards softness was between the standards of the soft and the hard thin paper and was designated quantities of softness when the sample to the touch, which is between 20 and 85. In the following paragraphs additionally used are described fibrous mass. In table 3 along with the data on the tensile strength of each standard thin paper presented data on mixtures of fibrous mass and particle size of the fibers of these mixtures used for the production of additional standards of thin paper. Other methods of manufacturing thin paper than a method of manufacturing a light thin paper with a dry keperawanan, and other fibrous mass than those used for manufacturing standards make it possible to produce materials of thin paper with the soft outside the range 20-86 on the scale of softness when the sample to the touch, limited to the above standards of thin paper. However, for the purpose of proving improve the softness achieved in the present invention, the above deputies, is accurate and sufficient for comparison purposes. Of the fibers of newsprint paper according to the present invention can be made of products from thin paper to the magnitude of softness over 86, if they were used in another method of manufacturing a thin paper, such as the way through drying, or if they were mixed with other fibers.

The pulp used for the manufacture of the standards of softness when the sample to the touch.

a) Bleached chemi-thermomechanical pulp from softwood (HTMLMODE) (grade of "Temel" 500/80) with the degree of fineness with the definition in the canadian standard instrument (SPCSP) equal to 500, and the degree of whiteness according to ISO 80 was made of Mariana black spruce and canadian fir. In the fibrous mass was transformed with pre-treatment with sodium sulfite and refining at high pressure followed by bleaching with alkaline hydrogen peroxide to the degree of whiteness of 80oaccording to ISO. The size of the fibers of Kajaani amounted to 27.8 mg/100 m, and the average length of the fibers of Kajaani - 1,7 mm

b) Bleached Kraft pulp from wood Northern softwoods (CDSMP) (100% softwood varieties "Pictou" 100/0) was made of NDA Kraft pulp to Kappa = 28 with subsequent bleaching to the degree of whiteness, equal 88oaccording to ISO. The size on Kajaani amounted to 14.3 mg/100 m, and the average length of the fibers of Kajaani - 2,2 mm

C) Bleached recycled fiber (MF) was made of assorted mixed office waste paper, which was transformed into a fibrous mass, sorted, washed and cleaned to the degree of grinding 550odetermined by canadian standard device, followed by bleaching with sodium hypochlorite to the degree of whiteness of 80oaccording to ISO. The size on Kajaani was equal to 12.2 mg/100 m, and the average length of the fibers of Kajaani - 1,2 mm

g) Bleached Kraft pulp from eucalyptus wood (BCCD/ grade Santa Fe without elemental chlorine) was made from eucalyptus ball, turned into a fibrous mass to Kappa = 12 on the process of production of Kraft pulp with subsequent bleaching to the degree of whiteness, 89oaccording to ISO. The size on Kajaani was equal to 6.8 mg/ 100 m and the average length of the fibers on Kajaani - 0,85 mm

d) Bleached Kraft pulp from wood southern soft rock (KDUMP) (pine "Scott-mobile) was made of pine incense, turned into a fibrous mass to Kappa = 26, followed by whitening up with the curl on Kajaani - 2,6 mm

e) Bleached chemi-thermomechanical pulp from hardwoods (HTMLMAP) (grade of "Millar Western" 450/83/100) having a degree of grinding equal to 450 when determining on the canadian standard instrument, and the degree of whiteness according to ISO, equal to 83, was made from aspen American. Transformation into a fibrous mass was carried out with pre-treatment alkaline peroxide and refining at high pressure with subsequent bleaching of alkaline peroxide.

The size of the fibers of Kajaani was equal to 13.8 mg/100 m, and the average length of the fibers of Kajaani - 0,85 mm

This test method does not require any device. When it is used the following methods and materials in order to evaluate samples of thin paper, using a group of ten or more people and delay performance of the softness of the samples on the scale of softness using reference materials with known values of softness, pending on the scale.

The sample preparation.

1. You should take five samples to be tested by a group of evaluators (experts).

2. To calculate the number of test soft samples and reference soft samples, clean the requisite number of soft samples (each product) = (X-1)(y), where X = the number of products to be tested, y = number of individuals in the test group.

3. For each of the evaluated products at random to take the roll of felt paper thin and discard the first few turns of the roll (to get rid of the glue that connects the end of the roll).

4. From each roll of the test material to prepare test soft samples. Each soft sample should be the thickness of four sheets and made from a continuous sample of thin paper having a length of four leaves. Each soft sample is made as follows: the sample length in four of the first sheet is folded in half. The result is a sample of double thickness and a length in 2 sheets. Sample double thickness then again fold in half and get a soft sample length in one sheet. Folding is necessary so that the outer surface of the sheet in a roll of thin paper became the outer surfaces of the soft sample. If the test material is "bilateral", i.e. properties of the outer surface of the sheet differ from the properties of the surface, facing the inside of the roll, the material should be tested twice; once to feel the soft sample, the outer surface ketorolaco, when folded which the surface of the sheet facing the inside of the roll becomes the outer surface feel soft sample.

5. To produce the required number of soft samples of each material, applying the formula in the above paragraph 2. If for preparation of the required number of soft samples require more than one roll of material, in this case, it is important to arbitrarily mixed stacks of soft samples of the material of each roll.

Encrypt each soft sample cipher party in the upper left corner (on the bend).

6. From the soft reference securities as follows select three standard to be used by a test group for comparison:

a) Select the coarse estimate the sample and compare it with the soft reference samples of thin paper, and then take the lower benchmark, which is somewhat coarser than the gross sample.

b) Select the softest sample of evaluated material and collect the soft reference sample of thin paper, which is somewhat higher (softer) than the soft evaluate the sample.

C) Select the third pattern, which is located approximately in the middle between baltalimani comparison to the test group when the sample to the touch and determine the greatest softness, the highest roughness and average.

7. Standards of comparison when the sample to the touch cover a range of softness, evaluate the test group. For greater accuracy, higher and lower selected standards of comparison, it is on the scale of softness when the sample to the touch to share approximately 30 divisions. The average standard of comparison must be eight or more scales from the lower and higher standards of comparison.

Selection and briefing of the members of the group.

1. A select group of approximately 10 people with roughly an equal number of men and women of different ages.

2. To provide a briefing with members of the group, and, if necessary, and conducting pilot tests.

3. The group must work in a quiet place.

The test procedure.

1. Trial evaluating soft start with reading the following standard instructions.

Standard instruction.

This manual should be read by every member of the group before beginning the procedure of conducting group trial evaluating softness.

a) Goal

"The purpose of this procedure is the comparison of soft samples free soft boom of the AGI. Compare these two models with each other using your main hand, and make a comparison on the feeling of each sample your main hand. You can stroke, bend or crush the samples as you like to make your judgments."

C) the First decision

"Once you feel each of a pair of soft samples, you will be asked to decide which sample is more soft.

g) the Second solution

"Please rate the degree of difference in softness between the two soft samples, using the following valuation method:

On a scale marked odd number 1, 3, 5, 7, 9. You can use even numbers, if you think that these numbers not fully reflect the distinction between the two "products ".

Rating scale group

< / BR>
The numbers on the scale represent the following:

1. No distinction.

3. A very small difference, insecure, someone could not notice it.

5. A small difference, a confident opinion.

7. A moderate difference, easily detectable, confident.

9. Very big difference, very easy-to-find memorable.

d) Training

"Before we begin, I'll give you a sample of the soft aterials. Please hold both samples. The difference in softness that you can feel between the two reference samples, evaluate the rating scale as equal to 9 (Number 9 on the scale is equivalent to the number of points on the rating scale of softness when the sample to the touch between the high and low standards chosen for the group on stage 6).

e) the reaction of the party

Do you have any questions on the test procedure?"

g) the Acquisition of confidence

"Finally, do not suffer too long over each decision. Your opinion is as good as any other. There is no right or wrong answers !"

2. Imagine every combination of soft feel of samples and reference soft samples of each group member and ask group members to choose the preferred model and then evaluate it using a rating scale of softness in the range from 1 to 9. Each group member should receive a couple of samples at random, in order to exclude errors of the sequential evaluation.

3. Write the results for each pair in the form of XYn, where X is the preferred cipher sample, Y is the preferred cipher sample and n is the value on the scale (1-9).

Data analysis

The results of the pairwise CPA is: the scale is a ratio scale, if this scale is invariant under positive linear transformations of the form y = ax, a is > 0.

Data pairs and weight relations for "n" number of soft samples injected into a quadratic matrix A that resembles the following:

< / BR>
where O1separate samples and W1value on the scale (weight ratios) for each pair.

Quadratic matrices of this type have the following properties:

< / BR>
where = (W1, W2, ... Wn). The vector of weights is by an eigenvector of the matrix A corresponding to its own value of n. As shown Sahati (see Saaty, T. L. "A Scaling Method for Priorities in Hierarchical Structures", Journal of Mathematical Psychology, 15. 234 - 281 (1977) and Saaty T. L. "Measuring the Fuzziness of Sets", Journal of Cyberneties, 4(4), 53-61 (1974)) removing the eigenvectors of the estimated weights requires finding the largest private values A (max). Program for computing machinery intended for finding the proposed Mac Connelles (MS'connel, wes, "Product Development Using Fuzzy Sets" INDA Tenth Technical Symposium, pp. 55-72, November 17-19, 1982). The resulting eigenvector is best estimated by the ratio scale for paired input data. Taking the logarithm of each element in this vector gives a more familiar scale with equal intervals, in which distances me what Chinami scale with equal intervals, and unknown samples represent numerical values by interpolation.

For all members of the group mean and standard deviation of the reference values of the softness of each unknown sample is calculated by the estimated standard values softness. If any member of the group value is outside 2 standard deviations from the mean value, then this value will drop and re-calculates the mean and standard deviation. The average value standard value viscosity without any values beyond 2 standard deviations from the mean is the standard amount of softness in the sample to the touch for a given unknown sample.

The scale of softness when the sample to the touch

< / BR>
The tensile strength.

The values of tensile strength, is shown here for paper products type thin paper, was measured by testing to determine the breaking length (test method N T 494 om-88 Technical Association of the pulp and paper industry), using a sample length of 5.08 cm and the speed of the cross head of 5.08 cm/min, the Sheet of thin paper usually has a different strength in the direction of the paper machine and across it. In addition,the awn on the gap among different samples of thin paper, it is important to amend the values of tensile strength taking into account differences in the main weight of the samples and differences in the strength of thin paper on the gap in the direction of the paper machine and across it. This correction is achieved by calculation of the tensile strength, normalized to the basic weight and direction" (hereinafter "normalized tensile strength" or "NPR"). NPR is calculated as the quotient obtained by dividing by the weight of the square root of the product of the magnitudes of the tensile strength in the direction of the paper machine and across it. Calculations of the tensile strength, normalized to account for differences in the basic weight and directions on a paper machine, designed for better comparisons of samples of tissue paper. The tensile strength as measured in the direction of the paper machine, and across it, and the basic weight for the sample thin paper is measured in accordance with test method T 410 om-88 Technical Association of the pulp and paper industry. When using English units, the tensile strength is measured in ounces per inch, and the majority of the weight is in pounds per foot (2880 square feet). When calculated in metric units, the tensile strength is measured in gram true metric units because the test apparatus used to test tension, adjusted for a segment of the sample in inches and therefore, metric units are expressed in grams by 2.54 see When using abbreviations RNM for stretching in the direction of the paper machine, RPMS for stretching across it, and OB for the main weight of the mathematical formula for the calculation of tensile strength, normalized to the basic weight and direction (NPR), is as follows:

NPR = (MMCM)1/2/OB

NPR in English units = to 0.060 NPR in the above metric units.

The method of manufacturing a thin paper.

Oil, modified enzymes fiber according to the present invention can be used with any well-known method of paper production for the manufacture of cloths soft, plump, hygienic paper, as, for example, thin paper, salfetochnyj paper, paper towel and a thin soft paper handkerchiefs. Suitable many different methods of paper production, including the ways in which the cloth is dried by means of channel drying, through-drying, thermal drying, and combinations thereof. Examples of methods of paper production, which may Sanford and others, 3.821.068 on the name of the Show, 3.812.000 in the name of Salvucci and others, 3.994.771 in the name of Morgan, and others, 4.102.737 in the name of Morton, 4.158.594 in the name of Becker and others, 4.440.597 in the name of wells, etc. and 5.048.589 in the name of cook, etc.

The preferred method for the production of paper is widely known as a method of dry craigrownie. It usually involves the use of paper pulp according to the present invention, which preferably add sizing chemicals to ensure the tensile strength Can be entered and other chemicals for paper production. Paper pulp is then pumped from the stock tank and flows in the headbox, where through the outlet slit flows when the consistency of 0.1-0.4% on a horizontal surface mesh part clinocerinae paper machine, where the removal of water and the formation of paper. The grid moves around breast roll and several of register rollers, and then to setmodule roller, from which it around the couch pit shaft and several guide rollers moving back to breast shaft. One of the rollers is made actuated to move the grid paper machine. For better removal of water between the register rollers can be used one or more agomelatine machine, transferred to the cloth by pressing cloth to the cloth of the couch pit shaft or transferring to the cloth using a gripping device. The cloth moves the fabric for the press section. The cloth then moves around one or two shafts presses, one of which may be of the suction shaft, then runs around the guides cushions and back to the couch pit shaft. Above the surface of the cloth in different places can be used showers and doctors that contribute to the selection of cloth, cleaning and washing the surface of the cloth. Water is removed in the gap between the shafts of the press section and moved to the cloth.

Molded and pressed the cloth is carried on the surface of a rotating drying cylinder, called a drying cylinder of large diameter paper machine type Yankees. Hood dryer section provided with nozzles for supplying hot air jets which impinge on the canvas and help remove moisture. For regulating the temperature of a cap provided with a discharge opening for removing air from the chamber under the hood. The canvas is removed from the drying surface using a scraper to craigrownie paintings. To facilitate the removal of the fabric from the dryer surface in a controlled, uniformly the TWT. The spray device is a series of spray nozzles that are attached to the manifold extending across the width of the drying surface. Kiperousa adhesive substance may be any of those normally used in the production technology of thin paper.

The paper web may be removed from the dryer is passed through the gap formed by the pair of rollers and is wound in the form of a large roll, called the roll winding machine used for rewinding and cutting.

Method for the production of thin paper, it is shown in the examples, in General, may be characterized as a method for the production of light-weight paper with a dry keperawanan. Pilot paper machine with a blade width of 38 cm worked in the following way. Before sheet formation pulp contain in stock a VAT, where injected sizing additives, dyes or other chemical additives. Paper pulp is fed into the mixing pump and then into the headbox through the discharge gap with the consistency of 0.1 - 0.4% arrives on a horizontal surface mesh clinocerinae paper machine, where the removal of water and the formation of the canvas. The grid moves macroscopic guide rollers and reverse sekovici roller and is fed back to breast shaft. One of these rollers is made actuated to move the grid clinocerinae paper machine.

Damp cloth, molded on the upper surface of the grid clinocerinae paper machine, is transferred to the cloth by means of a vacuum gripping device. The cloth moves the fabric for the press section. The cloth runs around one shaft-press, solid rubber shaft and the guide shaft and is returned to the vacuum gripping device. Water is removed in the gap between the shafts of the press section and moved to the cloth.

Molded cloth wring out and transferred onto the surface of a rotating drying cylinder, usually called a drying cylinder of large diameter paper machine type Yankees. The leaf blade is removed from the surface of the drying cylinder with a dry cloth between 95% and 96%. To facilitate the removal of paintings from the surface of the drying cylinder in a controlled, homogeneous condition on the surface of the drying cylinder by means of the spray nozzle is applied kiperousa adhesive substance. Adhesive mixture used in these examples was a mixture of 70% of polyvinyl alcohol and 30% latex starch-based ("the Azor, formed by a pair of rolls, and was reeled in the initial roll of the necessary size for testing. Paper machine made fabric width 38 cm and was operated at a speed of 12-15 m/min. In the examples, all samples of thin paper with a dry keperawanan produced with the main weight 4,53 kg/stop and the degree of craigrownie 18-20%. For all test samples were made of two-layer thin paper (9,07 kg/stop).

The following examples show Energeticheskiy the result of a combination of oils, crude fibers and surfactants. All used here the proportions are given by weight, unless otherwise indicated, the weight of the fibers are shown as the weight of the fibers, air-dried, unless otherwise indicated.

Example 1. Fibrous mixture were prepared from 100% primary fibre type used for the production of newsprint in the United States. A sample of the fibrous mass contained 60% of chemi-thermomechanical pulp from softwood (HTMLMODE) having a low degree of grinding (about 250owhen determining on the canadian standard instrument), 30% defibrating wood pulp from softwood and 10% Kraft pulp from timber North is I in a newspaper. The primary fiber used for the reason that they do not contain any contaminants introduced during the manufacturing process of the Newspapers. Fibrous mass was molded into a sheet-fed sheet of paper and dried without any chemical additives. Sheet-fed paper is divided into 6 distinctive designs. Using each sample sheet-fed paper prepared six separate paper mass. On the paper machine with a blade width of 38 cm above method from each such sample paper pulp made of thin paper with a dry keperawanan.

Six samples of sheet-fed paper has outlined figures 1a-1f. Sample 1a was left unstained, while samples 1b - 1f was contaminated oils and/or processed by enzymes and surfactants before re-transformation into a fibrous mass and making it easy thin paper with a dry keperawanan. Of the samples 1a-1f as follows were made of samples 1a - 1f light thin paper with a dry keperawanan.

Before cooking 6% fibrous suspension on each sample sheet-fed paper 1c and 1d roller for gravure printing made prints of soy oil when applying it in the amount of 1.5% against atory. Before turning designs sheet-fed paper 1e and 1f in the fibrous suspension they put the prints in a similar manner and under similar quantity of oil, which was mineral oil type, usually present in inks for printing of Newspapers, not soybean oil. Each sample thin paper made from a single fibrous suspension. In the amount of 1% by weight of the fibers were added cationic sizing resin "Solvitose-N" (registered trademark), manufactured by "Nalco Camel company. Within 15 min the temperature of the fibrous suspension with a consistency of about 6% was increased to 82oC. After cooking and curing at an elevated temperature within 15 minutes of the fibrous suspension from the sample 1d (contaminated soybean oil), fiber suspension from a sample 1f (contaminated mineral oil) and fibrous suspension from a sample 1b (not contaminated with oil) was cooled to about 60oC and diluted to the consistency of 5%, with a minor addition of sulfuric acid lowered the pH with the existing values, defined the fibrous mass and tap water to pH 5. For compositions with a consistency of 5%, obtained from samples 1b, 1d and 1f, we use the mpany") 45.3 kg air-dried fibers together with a mixture of enzymes from cellulose ("Cellulase 1.5 L" the company "Novo Nordisk of Bioindustrials, Inc."), xylase ("Pulpzyme HA" company "Novo nordiques of Bioindustrials, Inc.) and resinate ("Retinas AND 2" company "Novo Nordisk of Bioindustrials, Inc."). The enzymes were injected in the amount of up to 66.5 ml cellulose, 16,5 ml of xylanase and 16.5 ml resinate 45.3 kg air-dried fibers. After adding enzymes and surfactants fibrous suspensions of the samples 1b, 1d and 1f kept at low stirring for 30 minutes at a temperature of about 60oC, and then cooled with the regulation of the pH to 7 with sodium hydroxide. To prepare fibrous suspensions of the samples 1a, 1c and 1e, which for 15 min kept at 82oC and then cooled. Then used six fibrous suspensions for the above-described manufacturing a light thin paper with a dry keperawanan. Resulting in the samples of soft paper 1a-1f were essentially made by recycling. There were considerable differences of each sample in softness when the sample to the touch. Through a combination of pollution fibers butter and processing as enzymes and surfactants was achieved significant Energeticheskie improvement in softness. In table 1 for samples of thin paper 1a - 1f shows the and the sample to the touch. As you can see from this table, due to a combination of pollution by oil material thin paper and processing enzymes is achieved dramatic improvement in softness when the sample to the touch (feel soft). Visual examination of the samples 1a - 1f showed a marked difference between the structures of craigrownie on the test sample 1a and sample 1d and 1f, both of which were contaminated by oil and processing enzymes and surfactants. The control sample had the typical appearance when dry craigrownie separate lines crepe, and the sheet in the cross-section had a wavy or corrugated shape with distinct peaks and valleys. On the contrary, thin paper made from paper pulp, oil contaminated and treated with enzymes and surfactants, had rather more uniform thickness than corrugated cross section, and looked as having a more open structure with a much larger number of lines crepe one inch.

Example 2. Prepare eight paper masses, which were processed and used for the manufacture of lightweight thin paper with a dry keperawanan, using the same methods of paper production, as a traveler, as in example 1, contained 100% of the initial fibrous mass comprising 60% of chemi-thermomechanical pulp (TMDM) of softwoods and low degree of grinding (250oC when determining on the canadian standard instrument), 30% defibrating wood pulp from softwood and 10% bleached Kraft pulp from timber Northern softwoods. Four specimens of thin paper, labeled 2e, 2f, 2g and 2h, made from fibrous pulp, obtained by transformation of newsprint paper (GM) in the fibrous mass. In the manufacture of all the paper samples initially suspended fibrous mass in water at a consistency of 6%. Was the temperature of the suspension to 82oC and kept in suspension at an elevated temperature for 30 minutes Fibrous suspension for making samples, designated as 2a and 2e, then cooled and used every directly as paper pulp for making lightweight thin paper with a dry keperawanan using papermaking equipment and method described in example 1. Before the production of paper each from fibrous suspensions for prototype 2b, c, d, f, g and h were subjected to additional processing. This braboy acid to 5 and the regulation of the consistency of up to 5%. In the suspension for producing samples 2c, 2d, 2g and 2h were injected surfactant of the type commonly used for refining fibrous mass, in the amount of 28 ml 45.3 kg of pulp. Added enzymes in the amount of up to 66.5 ml cellulose, 16,5 ml xylanase and 16.5 lipase 45.3 kg fibrous mass and at a temperature of 60oC. For prototype 2b, 2d, 2f and 2h used suspension with a consistency of 5%. Suspension with a consistency of 5% for the manufacture of all the samples is then kept for 30 min at 60oC, cooled, treated with sodium hydroxide for pH adjustment to 7 and used as paper pulp for the production of thin paper with a dry keperawanan on papermaking equipment and method described in example 1. In the paper mass is added cationic sizing resin "Solvitose H" (registered trademark) in an amount of 1% by weight of the fibers. Samples of thin paper 2a - 2h and then felt the softness of when the sample to the touch and the tensile strength in the direction of the paper machine and across it and given basis weight. The test results shown in table 2. As demonstrated by these results, treatment with enzymes and surfactants is cate samples of thin paper with a dry keperawanan, designated as 3a - 3k, were made from various paper mass containing fibers with different degrees of coarseness, measured in mg/100 m on the device Kajaani FS-1000". Thin paper with a dry keperawanan produced using a paper machine and method described in example 1, and masses of paper having fibers with different degrees of coarseness and a mixture of fibers listed in table 3.

Using the method of production of paper described in example 1, from each paper pulp produced two samples of thin paper with a dry keperawanan, indicated 3a-1 and 3a-2 to 3k-1 and 3k-2. For each paper pulp difference between sample 1 and sample 2 consisted in the fact that the production of 2 samples of thin paper from each paper pulp was added unequal amounts of sizing resins, which gave different figures tensile strength. Sizing additive was cationic sizing resin ("Solvitose h" company "Nalco Kemikl company"). Newspaper mixed paper (GM) was turned into a fibrous mass and was treated with the enzyme and the surface-active agent as described in example 2. Table 3 shows the kinds of the fibrous mass and particle size on Kajaani in mg/100 m for each paper MassGeneral tensile strength, the magnitude of softness when the sample texture was determined by the normalized tensile strength (NPR) is equal to 10,0 (in metric units), by linear interpolation or extrapolating values of softness when the sample to the touch for sample 1 and sample 2 from each paper pulp. This allows for the same tensile strength to compare the softness of tissue paper made from each paper pulp. Data about softness in the sample to the touch, obtained when the normalized tensile strength (NPR), equal to 10.0, and also the values of particle size are shown in table 3 and the graph in the drawing. Samples of thin paper 3a-3j, made from comparative paper of the masses, designed to show the normal relationship between the size of the fibers and soft thin paper when the sample to the touch for various compositions of the paper mass. When this degree of fineness of the sample 3k from the pulp made from newsprint paper (GM) and treated with enzymes and surface-active agent has much more softness when the sample to the touch than the samples of the comparative compositions. These results clearly show an obvious improvement in softness to the touch coarse fibers, achieved by the x2">

1. The method of making sanitary paper products from a newspaper waste paper containing coarse pulp fiber and printed with ink containing oil, comprising (a) making newsprint paper in the fibrous mass in water under stirring to obtain a fibrous suspension with a pH below about 8, characterized in that the fibrous suspension on stage and get with the consistency of 3-12%, and the method further comprises the following stages: (b) introducing the suspension of an enzyme selected from the group consisting of cellulose, hemicellulose and lipase, and keeping the fibrous suspension at a temperature above about 38oC for at least 15 min; and C) the use of the treated enzyme fibrous mass as the main source of fiber in the papermaking process to produce sanitary paper products.

2. The method according to p. 1, characterized in that it further includes the introduction of 0.025-0.1% of surface-active substances in fibrous suspension at any time, starting from the preparation of suspensions at the stage a) to the end of the 15 minute period at the stage b).

3. The method according to p. 1, characterized in that as hemicellulase use of xylan is kg/stop and salfetochnyj paper.

5. The method according to p. 1, wherein the sanitary paper is made with a base weight of 9.1 and 18.2 kg/stop and a paper towel.

6. The method according to p. 1, characterized in that the support pH of the fibrous suspension 4-7.

7. The method according to p. 1, characterized in that the pH and chemical additives in fibrous suspensions are insufficient for the saponification of the oil components in inks.

8. The method according to p. 2, characterized in that it further includes the introduction of the cationic dye in the fiber treated with the enzyme and the surface-active substance.

9. The method of making sanitary paper products from a newspaper waste paper containing coarse pulp fiber and printed with ink containing oil, comprising (a) making newsprint paper in the fibrous mass in water under stirring to obtain a fibrous suspension with a pH below about 8, characterized in that the fibrous suspension on stage and get with the consistency of 3-12%, and the method further includes the following stages: (b) keeping the fibrous suspension at a temperature above about 38oC for at least 15 min; C) introducing a suspension of p g) maintaining the pulp in contact with the enzyme by at least about 30 min, and d) the use of the treated enzyme fibrous suspension as the main source of fiber in the papermaking process to produce sanitary paper products.

10. The method according to p. 9, characterized in that it further includes the introduction of 0.025-0.1% of surface-active substances in fibrous suspension at any time, starting from the preparation of the fibrous suspension in stage a) to the end of the 30-minute period at stage g).

11. The method according to p. 9, characterized in that as hemicellulase use the xylanase.

12. The method according to p. 9, characterized in that the hygienic paper made from basic weighing 3.2-15.9 kg/stop and salfetochnyj paper.

13. The method according to p. 9, wherein the sanitary paper is made with a base weight of 9.1 and 18.2 kg/stop and a paper towel.

14. The method according to p. 9, characterized in that the support pH of the suspension 4-7.

15. The method according to p. 10, characterized in that it further includes the introduction of the cationic dye in the fiber treated with the enzyme and the surface-active substance.

16. A method of manufacturing a hygiene paper of newsprint paper containing coarse fibers and printed ink containing oil, characterized in that it includes a) the suspension of newspaper waste paper in water at a consistency of 3-12%; b) introduction of surface-active and lipase, and keeping the pulp in contact with the enzyme by at least about 15 minutes; C) washing and screening a fibrous suspension to remove the crushed and chemical contaminants from the slurry while maintaining more than half of the oil contaminants present in the fibrous suspension; g) the use of fibrous suspensions treated with the enzyme and the surface-active substance, as a source of fibers in the papermaking process to produce sanitary paper products, and d) and the fibrous mass, starting from the preparation of the fibrous suspension in stage a) and during the papermaking process stage g), support at pH below about 8.0 in.

17. The method according to p. 16, characterized in that as hemicellulase use the xylanase.

18. The method according to p. 16, wherein the sanitary paper made from basic weighing 3.2-15.9 kg/stop and salfetochnyj paper.

19. The method according to p. 16, wherein the sanitary paper is made with a base weight of 9.1 and 18.2 kg/stop and a paper towel.

20. The method according to p. 16, characterized in that the support pH of the fibrous suspension 4-7.

21. The way Tannoy the enzyme and the surface-active substance.

22. Sanitary paper product containing cellulosic fibers, wherein at least 80% cellulose fibers are coarse fibers having a particle size in Kajaani more than 18 mg / 100 m, with the specified product from the tissue paper has a basis weight of 3.2-18.2 kg/stop, normalized tensile strength (metric units) 5-20 and contains 0.2 to 2.0% of an oil selected from the group consisting of vegetable and mineral oils.

23. The product under item 22, wherein the sanitary paper is salfetochnyj paper having a basic weight of 3.2-15.9 kg/stop and softness when the sample to the touch at least 45 units.

24. The article on p. 22, characterized in that it further includes a cationic dye.

25. The product under item 22, wherein the sanitary paper made with a basis weight of 9.1 and 18.2 kg/stop is a paper towel.

26. A method of manufacturing a hygiene paper, including regular stage production of paper from education paper pulp by suspendirovanie cellulose fibers in water, dewatering of paper pulp in paper machine coating of paper pulp on a moving mesh for forming a paper sheet iwalokun size on Kajaani more than 18 mg/100 m, and the resulting paper sheet has a basis weight of 3.2-18.2 kg/stop, and the method further comprises the following stages: a) introduction of 0,2-2,0% of mineral or vegetable oil in coarse cellulose fibers or before the formation of paper pulp, or when mixing directly in this paper the mass; b) the introduction to a paper weight of surfactant and enzyme selected from the group consisting of cellulase, hemicellulase and lipase, and maintaining the pulp in contact with the enzyme for at least 15 minutes at a consistency of 3-12% and at a temperature above about 38oC; C) production of hygienic paper from this paper pulp, processed oil and enzyme, and drying the paper.

27. The method according to p. 26, wherein said hygienic paper made from basic weighing 3.2-15.9 kg/stop and salfetochnyj paper.

28. The method according to p. 26, wherein the sanitary paper is made in the form of a paper towel having a basis weight of 9.1 and 18.2 kg/stop.

29. The method according to p. 26, characterized in that as hemicellulase use the xylanase.

30. The method according to p. 26, characterized in that the support pH 4-7.

31. The method according to p. 26, otlichno and surface-active substance.

32. A method of manufacturing a hygiene paper, including regular stage production of paper from education paper pulp by suspendirovanie cellulose fibers in water, dewatering of paper pulp in paper machine coating of paper pulp on a moving mesh for forming a paper sheet and drying the sheet, wherein the paper is made from paper pulp with the most coarse cellulose fibers with a size on Kajaani more than 18 mg/100 m, and the resulting paper sheet has a basis weight of 3.2-18.2 kg/stop, and the method further comprises the following stages: a) introduction of 0,2-2,0% mineral or vegetable oil in coarse cellulose fibers or before the formation of paper pulp, or when mixing directly in this paper the mass; b) keeping the paper pulp at a consistency of 3 to 12% and at a temperature above about 38oC for at least 15 min; C) introducing at a temperature below 60oC paper weight of an enzyme selected from the group consisting of cellulase, hemicellulase and lipase, and maintaining the pulp in contact with this enzyme by at least about 15 minutes; g) the manufacture of hygienic paper from paper pulp, processed oil and enzyme ABC.

34. The method according to p. 32, wherein said hygienic paper made from basic weighing 3.2-15.9 kg/stop and salfetochnyj paper.

35. The method according to p. 32, wherein the sanitary paper is made with a base weight of 9.1 and 18.2 kg/stop and a paper towel.

36. The method according to p. 35, characterized in that it further includes the introduction of the cationic dye in the fiber treated with the enzyme and the surface-active substance.

37. Method of modifying cellulose fibers to improve their properties to form salfetochnyj paper and paper towels, characterized in that it comprises the stages of: a) introduction of 0,2-2,0% of mineral or vegetable oil in coarse cellulose fibers or before the formation of paper pulp, or when mixing directly in this paper mass and b) introducing at a temperature below 60oC paper weight of an enzyme selected from the group consisting of cellulase, hemicellulase and lipase, and maintaining the pulp in contact with this enzyme in the consistency of 3-12% and 38-60oC for at least 15 minutes

38. The method according to p. 37, characterized in that it further introduction of 0.025-0.1% of surface-sports is oficerowie cellulose fibers to improve their properties to form salfetochnyj paper and paper towels, characterized in that it comprises the following stages: a) introduction of 0,2-2,0% of mineral or vegetable oil in coarse cellulose fibers or before the formation of paper pulp, or when mixing directly in this paper the mass; b) keeping the paper pulp at a consistency of 3 to 12% and at a temperature above about 38oC for at least 15 min, and C) the introduction at temperatures below 60oC paper weight of an enzyme selected from the group consisting of cellulase, hemicellulase and lipase, and maintaining the pulp in contact with this enzyme by at least about 15 minutes

40. The method according to p. 39, characterized in that it further includes the introduction of 0.025-0.1% of surface-active substances in fibrous suspension at any time, starting from the preparation of the fibrous suspension at the stage a) before the end of the 15-minute period on stage).

41. The method according to p. 39, characterized in that as hemicellulase use the xylanase.

42. Cellulose fiber for the manufacture of hygienic paper products, characterized in that it contains a modified enzyme cellulose fiber having a particle size in Kajaani more than 18 mg/100 m and containing 0.2 to 2.0% of an oil selected from the group Sonae enzyme fiber is modified by the enzyme, selected from the group consisting of cellulase, hemicellulase and lipase.

44. Cellulose fiber for the manufacture of hygienic paper products, characterized in that it contains cellulose fibers modified enzyme is a cellulase having a particle size in Kajaani more than 18 mg/100 m and containing 0.2 to 2.0% of an oil selected from the group consisting of vegetable and mineral oils.

45. Cellulose fiber for the manufacture of hygienic paper products, characterized in that it contains cellulose fibers modified enzyme xylanase having a particle size in Kajaani more than 18 mg/100 m and containing 0.2 to 2.0% of an oil selected from the group consisting of vegetable and mineral oils.

46. Cellulose fiber for the manufacture of hygienic paper products, characterized in that it contains cellulose fibers, modified by the enzyme lipase having a particle size in Kajaani more than 18 mg/100 m and containing 0.2 to 2.0% of an oil selected from the group consisting of vegetable and mineral oils.

 

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