A method of obtaining a paper material for the inner layer of decorative paper laminate

 

(57) Abstract:

Use: manufacture of paper materials for the inner layer of decorative paper laminates. The inventive method comprises introducing a slurry of fibrous semi-finished product of organic matter, low tide of the paper web, drying and processing of impregnating agent based on rezol phenol-formaldehyde resin, followed by final drying cloth. As an organic substance use water-insoluble substance selected from the group consisting of modified lignin, polyethylene of high, medium and low-density polymer or copolymer based on vinyl chloride, mainly polyvinyl chloride or copolymer of vinyl chloride and vinyl acetate, polyvinylacetal, mainly polyvinyl butyral, copolymers of caprolactam, diamine, adipic acid and sabatinovka acid, or mixtures thereof, but such water-insoluble organic substance is administered in the amount of 0.05 - 3 wt.h. 1 wt.h. impregnating agent. 2 C.p. f-crystals, 1 table.

The invention relates to the pulp and paper industry, in particular to methods of producing paper for the inner layers of decorative BU is per material for the inner layer of the decorative laminate, includes introduction to the suspension of fibrous semi-finished product of a dispersion of phenol-formaldehyde binder and particles of polyethylene, ebb paper web and drying [1]

While polyethylene is injected in the amount of 6 to 50% by weight of the FSF.

The known method is burpropion way to obtain a paper material for the inner layers of decorative paper laminate, with some dispersed CFF replaced by dispersed polyolefin.

Besprobochnym known method is convenient from the point of view of technology, but the use of dispersions of resolu associated with a high residual toxicity of resolv.

A method of obtaining a paper material for the manufacture of plastic by impregnation of this base mixture rezol phenol-formaldehyde resin powder or granules of HDPE [2]

This treatment helps to improve the elasticity of the plastic, which leads to the possibility of regulating the flexibility of the composite.

However, the impregnation in the known method is carried out with low molecular weight Resolume, which necessitates the stage of precondensation stage before curing.

The closest analogue to the proposed separation of the inner layer of the decorative laminate, includes introduction to the suspension of fibrous semi-finished product of organic matter, low tide of the paper web, drying and processing of rezol phenol-formaldehyde resin, followed by final drying cloth [3]

At the same time as the organic matter introduced into the suspension of fibrous semi-finished product, use water-soluble urea resins CS-11, CS-35, ISS-10P, and as a fibrous semi-finished products used cellulose fiber.

Paper material by the well-known impregnation method, has the necessary strength properties.

However, the introduction of paper-based phenolic binder by impregnation associated with the use of expensive tradeshow phenolic resins, require a high expenditure of energy, material and labor resources.

New technical result of the claimed method is to reduce the cost of the material by reducing the consumption of toxic phenol-formaldehyde resin, while maintaining the strength properties of the paper material.

This is equivalent to reducing the consumption of phenol-formaldehyde resin reduced emission of toxic substances into the atmosphere.

Achieved new technical achiev the plastic, includes introduction to the suspension of fibrous semi-finished product of organic matter, low tide of the paper web, drying and processing of impregnating agent based on rezol phenol-formaldehyde resin, followed by final drying cloths, as an organic substance use water-insoluble organic substance selected from the group consisting of modified lignin, polyethylene of high, medium and low-density polymer or copolymer based on vinyl chloride, mainly polyvinyl chloride or copolymer of vinyl chloride and vinyl acetate, polyvinylacetal, mainly polyvinyl butyral, copolymers of caprolactam, diamine, adipic acid or sabatinovka acid, or mixtures thereof, such water-insoluble organic substance is injected in a quantity of 0.05 to 3 wt.h. 1 wt.h. impregnating agent.

At the same time as a sealing agent in the proposed technical solution use rezol phenol-formaldehyde resin or its mixture with e-caprolactam, or with condensation products of e-caprolactam with formaldehyde at a ratio of 1:0.05 to 1:0,4, and as a fibrous semi-finished product of the pulp and fiber (cellulose, the tree is ASS="ptx2">

The proposed method combines aspects of impregnating and besprovodnoy technology for the production of paper material for the inner layer of the decorative laminate. In this part of the binder, introduced during formation of the paper web, is a component substitute phenol-formaldehyde resin or impregnating agent based on it. i.e. impregnation of the FSF or impregnating agent based on it is subjected to a base paper containing as an organic filler, a binder given to the stated substitute phenol-formaldehyde resin.

When the impregnation of this paper is the basis of "gets" phenol-formaldehyde resin or on the basis of a sealing agent to the number of total binding, which is necessary for the inner layers of plastic, i.e., 65 to 70 weight. fibrous bases have 35 30 weight. composite binder (water-insoluble organic substance and phenol-formaldehyde resin, with the ratio can vary from 0.05 wt.h. up to 3 wt.h. 1 wt.h.).

The proposed method can be used as substitutes for the phenol-formaldehyde resin dispersed substances in the form of powder, flakes, hibrido or pieces. Aggregate SOS is the Zia fibrous semi-finished product.

Declared substitutes phenol-formaldehyde resin are industrial waste, so an additional positive effect is the disposal of these wastes while maintaining the quality of the product and reducing the number of toxic phenol-formaldehyde resin.

When used as a suspension of fibrous semi-finished product, for example a suspension of a mixture of cellulose and collagen fibers, the proposed method can achieve their ratio, respectively, from 1:1.1 to 1:2.

However, to ensure the necessary strength basis at the stage of impregnation in some cases it strengthen by introducing into the suspension of fibrous semi-finished product from 1 to 7% acrylic emulsion, mainly BMP-3, or other carboxylating water-insoluble copolymers in the form of latexes with a degree of carboxylation 3 20%

This carboxypropanoyl copolymer being bumagomaraniem and impregnation plays the role of a binder, reinforcing the paper web, and at the stage of pressing plays the role of a component of the binder, being part of a substitute for the CFF. Composite binder, i.e., updated with another component, the number of composite binder remains the aqueous material for the inner layer of the decorative laminate as follows.

In the suspension of fibrous semi-finished product containing 100% unbleached sulfate pulp fiber NS-2, injected polyethylene (PE) high density in the form of fractions of the dispersed particles with a size of 20 mm, While the fraction of PE obtained from pre-shredded household waste PE film into pieces of a size not more than 1 cm2and subsequent grinding in an air environment to vibratory mill.

From the resulting suspension is then cast the paper weight of 185 g/m2.

Paper polyaluminosilicate fabric is dried and treated with impregnating agent rezol phenol-formaldehyde resin, followed by final drying cloth. The ratio of PE and the FSF is 1:1 and the prepreg receive the following composition cellulose fiber composite binder (PE + CFF) 65:35.

The obtained target material (prepreg) is used as the inner layer in the recruitment package for pressing TBSP. Extruded plastic is subjected to testing. The results are presented in table 1.

Example 2. The method of producing the prepreg carried out analogously to example 1, with the only difference that the suspension containing 100% cellulose fibers enter the commodity emulsion polyvinyl the inner layer in the recruitment package for pressing TBSP. Extruded plastic feel. The results are presented in table 1.

Example 3. The method of producing the prepreg carried out analogously to example 1, with the only difference that the suspension containing 100% cellulose fiber, administered activated lignin ratio of hydrolytic lignin and the FSF is 3:1.

The resulting prepreg is used as the inner layer in the recruitment package for pressing TBSP. Extruded plastic is subjected to tests, the results are presented in table 1.

Example 4. The method of producing the prepreg carried out analogously to example 1, with the only difference that the suspension containing a mixture of cellulose and PVA fiber at a ratio of 1:0.03 to enter commodity PE low density brands 273 fraction of particles not more than 40-45 μm, the ratio of the PE and the FSF is 0.5:1.

The resulting prepreg is used as the inner layer in the recruitment package for pressing TBSP. Extruded plastic feel. The results are presented in table 1.

Example 5. The method of producing the prepreg carried out analogously to example 1, with the only difference that the suspension containing a mixture of cellulose and collagen fibers in the second composition, and then enter the ground maloideae PVC fiber /(TC 6-06-111-83); 0.4 Tex/.) The ratio of chlorin fiber and the FSF is 1.5:1, and the ratio (cellulose + collagen.fiber):(a copolymer of BMP-3 +chlorine + CFF) is invariably 65:35. When this collagen fiber produced from chrome shavings, which took the stage sorting and subsequent cutting mill OOC-3 and the grinding on the installation of the URC with obtaining fibers with a degree of grinding of the 60oSHR.

The resulting prepreg is used as the inner layer in the recruitment package for pressing plastic. Extruded plastic feel, the results are presented in table 1.

Example 6. The method of producing the prepreg carried out analogously to example 1, with the only difference that the suspension containing a mixture of cellulose and collagen fibers at a ratio of 1:0,1, enter lignin source, the ratio of hydrolytic lignin and the FSF is 0.05:1.

The resulting prepreg is used as the inner layer in the recruitment package. Extruded plastic feel, the results are presented in table 1.

Example 7. The method of producing the prepreg carried out analogously to example 1, with the only difference that T emulsion PVC and chlorin fiber (i.e., fiber from polyvinylidenechloride THAT 6-06-192-84; Tex.0,31) at a ratio of 1:0.5, and the ratio of the water-insoluble organic substance (mixture of PVC and chlorin fibers) and the CFF is 1.5: 1. And as a mixture on the basis of glass fibers, a mixture of glass fiber with Mylar fiber at a ratio of 1:0,1.

The resulting prepreg is used as the inner layer in the recruitment package. Extruded plastic feel. The results are presented in table 1.

Example 8. The method of producing the prepreg carried out analogously to example 1, with the only difference that in the fibrous suspension is injected PVC, while the ratio of PVC and the FSF is 1:1. Used fibrous suspension includes fibrous fiber and a mixture of basalt fibers with collagen at a ratio cellulose fiber mixture 1:2,3 ratio in a mixture of basalt fibers with collagen fiber is 1:0,2.

The resulting prepreg is used as the inner layer in the recruitment package for pressing TBSP. Extruded plastic feel. The results are presented in table 1.

Example 9. The method of producing the prepreg carried out analogously to example 1, with the only raznizey e caprolactam, the hexamethylenediamine were, adipic and sabatinovka acid, and the resulting paper composite is impregnated with a solution of the composition of the FSF: e caprolactam 1:0,2. You get the prepreg composition of cellulose: (CFF + copolymer on the basis of e - caprolactam + e-caprolactam) 65:35 ratio of binder components, respectively, 1:1:0,2.

The resulting prepreg is used as the inner layer in the recruitment package. Extruded plastic feel, the results are presented in table 1.

Example 10. (the prototype).

From the suspension of unbleached sulphate pulp NS-2, ground up 22oSHR, taped water-soluble urea-formaldehyde resin CS-35, entered in the amount of 2% of A. with.in. cast base paper weighing 150 g/m2that is impregnated with the next solution CFF, getting after drying the prepreg with the content of the CFF 35%

The prepreg is used as the inner layer in the recruitment package. Pressed prepreg experience. The results are presented in table 1.

1. A method of obtaining a paper material for the inner layer of the decorative laminate, comprising introducing into the suspension of fibrous semi-finished product of organic matter, ebb paper web is a osushivaniya canvas characterized in that the organic substance use water-insoluble substance selected from the group consisting of modified lignin, polyethylene of high, medium and low-density polymer or copolymer based on vinyl chloride, mainly polyvinyl chloride or copolymer of vinyl chloride and vinyl acetate, polyvinylacetal, mainly polyvinyl butyral, copolymers of caprolactam, diamine, adipic acid and sabatinovka acid or mixtures thereof, but such water-insoluble organic substance is injected in a quantity of 0.05 to 3 wt.h 1 wt.h impregnating agent.

2. The method according to p. 1, characterized in that as an impregnant used rezol phenol-formaldehyde resin or a mixture thereof with-caprolactam or a product of condensation of caprolactam with formaldehyde at a ratio(1 0,05) (1 0,4).

3. The method according to p. 1, characterized in that the fibrous semi-finished products used cellulose fiber or a mix of leather, artificial, synthetic or mineral fibers.

 

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