Dispersing non-woven material

FIELD: textile, paper.

SUBSTANCE: invention describes a method to make a dispersing non-woven substrate in an aqueous medium, including: a) making an aqueous non-woven binder comprising a selected emulsion polymer, where the polymer has been modified with a compound containing a trisubstituted atom N, the compound value is in pKb from 4 to 7; b) interreacting of a non-woven substrate with an aqueous non-woven binder; c) heating the interreacting non-woven material at the temperature from 120 to 220C; and d) immersing the interreacting heated non-woven material into an aqueous medium with a finite value of pH<5. The invention also describes a dispersing non-woven substrate in an aqueous medium, made with the said method, and a method for getting a dispersing non-woven material in an aqueous medium.

EFFECT: improved material properties.

4 cl, 3 tbl

 



 

Same patents:

FIELD: process engineering.

SUBSTANCE: invention relates to bulky nonwoven material used for cleaning and to its fabrication. Nonwoven bulky material (10) comprises first side (11), second side (12) opposite the latter, multiple macroscopic recessed ridges (21) and ledge (30) on at least first side (11). First recessed ridge (21) extends in first direction with reset interval. Ledge (30) is arranged between first recessed abutting ridges (21). Ledge (30) extends from second side (12) to first side (11) of bulky material (10).

EFFECT: material is suitable for efficient catching of coarse dust particles.

12 cl, 12 dwg, 1 tbl

FIELD: textiles, paper.

SUBSTANCE: in a nonwoven fabric a plurality of small fibrous fragments, having a deeper colour than the colour of the basic texture of the nonwoven fabric, is distributed and placed in a scattered state over the whole area of the nonwoven fabric. In addition, the value difference (T3) of thicknesses is 1 mm or less when determining according to the formula T3=T1-T2, where T1 is the thickness of the nonwoven fabric (10) in determining under the pressure of 7.64 kPa in the area where there is a fine fibrous fragment, while T2 is the thickness of the nonwoven fabric determined under the pressure of 7.64 kPa in the area where the fine fibrous fragment is absent.

EFFECT: improvement of the efficiency of manufacturing the nonwoven fabric.

23 cl, 4 dwg, 2 tbl

FIELD: process engineering.

SUBSTANCE: set of inventions relates to porous membrane, separator for electrochemical device including said porous membrane and said separator and to method of its production. porous membrane contains cellulose fibres wherein the latter are produced from the mix of over 50 wt % of initial material first cellulose fibres with surface area defined by staining with "congo red" dye and making 250 m2/g or more and 500 m2/g or less; and less than 50 wt % of second cellulose fibres with surface area defined by "congo red" staining and making 150 m2/g or more and less than 250 m2/g.

EFFECT: better properties, acceptable costs.

28 cl, 1 tbl, 8 ex

Duplicating gasket // 2501894

FIELD: textiles, paper.

SUBSTANCE: duplicating gasket is described, which is applicable, in particular, as a gasket for the front duplicating in the textile industry, with a carrier layer based on loosely coupled and structured with the waterjet method combing or nonwoven fabric. At that the carrier layer is bound only on the selected sites using a binder and is provided at least from one side with an adhesive mass. The carrier layer is structured so that it has a raster perforated structure.

EFFECT: high volume and reversible elasticity, extremely high elastic recoverability.

11 cl, 7 dwg

FIELD: textiles, paper.

SUBSTANCE: method for producing absorbent cotton includes mechanical and optional chemical processing of cotton and/or bast fibers and/or man-made natural and/or synthetic artificial fibers containing cotton and bast of step of bleaching, souring, washing, pressing, loosening, drying and carding, for natural and man-made synthetic man-made fibers of steps of hoeing and carding, followed by hackling and the formation of a mixture of fibers with manufacturing of beat up mixed fiber and the production of cotton canvas from it. Fibers are isolated from a mixture of cloth or rags and textile waste by pulping raw material. Hygroscopic cotton fiber comprises a mixture based on fibers selected from the group of cotton, bast, natural, artificial, synthetic, artificial fabric.

EFFECT: increasing the speed of wetting, absorption capacity, capillarity of cotton, recycling of various rags and textile waste and eliminating dependence from the deficit on raw material for the production of cotton.

11 cl, 1 tbl

FIELD: textiles, paper.

SUBSTANCE: absorbent cotton consists of bast fibers or fiber mixture based on cotton and/or bast, and optionally synthetic fibers. As the cotton fibers, at least cotton fibers itself and/or cotton blowing are used; as bast fibers, at least flax fibers and/or flax tow, and/or hemp fibers, and/or hemp tow, and/or jute fibers, and/or jute tow, and/or kenaf fiber, and/or kenaf tow are used; as the synthetic fibers, the viscose rayon fibers and/or polyester fibers are used. The method of producing absorbent cotton comprises mechanical and chemical treatment of cotton and/or bast fibers containing stages of bleaching, souring, washing, wringing, loosening, drying, rippling and forming the mixture of fibers to prepare the scutched mixed fibers and production of cotton canvas of it. The organic synthetic fibers for the textile industry are optionally added to a mixture of cotton and/or bast fibers after chemical treatment.

EFFECT: increase in the specific viscosity, elasticity of cotton, eliminating dependence on a deficit of any raw material used to produce cotton, and expanding the range of ready-made products of it.

4 cl, 9 tbl, 7 ex

FIELD: textile, paper.

SUBSTANCE: mineral fibres are produced from a mineral melt with the help of a fibre-forming apparatus, a binder is added to shaped mineral fibres, and are blown from the fibre-forming apparatus to a collecting surface, on which mineral fibres are assembled as a primary canvass. Optionally the primary canvass is interwoven into the secondary canvass. The primary canvass from the collected mineral fibre or the secondary canvass from the mineral fibre is processed at the working level of the first processing plant, and the canvass is transported on a conveyor to the working level of the second processing plant. Working levels of the first and/or second processing plant are adjusted substantially in one and the same plane in order to provide for displacement at one level of the canvass from the mineral fibre between processing plants.

EFFECT: reduced crippling and warping of a fibrous canvass between various processing plants.

9 cl, 1 dwg

FIELD: machine building.

SUBSTANCE: profiled sheet made from fibers comprises multiple ledges, jointing sections and recesses made on its surface. Note here that said jointing sections make boundaries to joint said ledges together. Note also that said recesses are located between said ledges aside from jointing sections, i.e. six recesses around each ledge. Invention relates also to absorbing article incorporating said sheet.

EFFECT: higher efficiency of absorbing fluid.

17 cl, 19 dwg, 3 tbl

FIELD: chemistry.

SUBSTANCE: disclosed is an insulation material made with possibility of increasing volume thereof, containing clusters with a random shape, made with possibility of increasing volume thereof, wherein said clusters contain natural fibre or material. The clusters also contain synthetic fibre or material.

EFFECT: increase in comfort during use and reduced harmful effect owing to low content of synthetic materials.

10 cl

FIELD: textile, paper.

SUBSTANCE: system (90) for fastening a nonwoven fabric (10) includes a canvas (12) formed from a variety of extruded threads (14). At least some of the threads (14) in the nonwoven fabric (10) include self-adhesive material. Foamed layer (91) includes a surface (92) having a variety of loosely arranged elements (93). The elements (93) are adapted for engagement with at least a part of the set of threads (14). And at least some of the loosely arranged elements (93) include a surface modifier. The surface modifier is a self-adhesive material, which is similar to self-adhesive material in the nonwoven fabric (10). The threads (14) of non-woven fabric (10) are formed of a multicomponent or bicomponent material. At least one of the materials in multicomponent or bicomponent materials is a self-adhesive material. In one version the absorbent article (95) contains a system of fastening (90) for fixation of the absorbent article (95) on the waistline of the user. In another version, the absorbent article (95) contains a system of fastening (90) for fixation of the absorbent article on the waistline of the user, where the surface modifier comprises a binder or polymer wax. The strength of connection between the non-woven fabric (10) and a part of the foamed layer (91) includes a surface modifier, with a strength of 1.5 times greater than the strength bond between the nonwoven fabric (10) and a part of the foamed layer (91), which does not include a surface modifier.

EFFECT: improved properties of mechanical fasteners and ease of production of fastening system.

18 cl, 18 dwg, 6 tbl, 6 ex

FIELD: production of insulating mats from fibrous materials, in particular, from mineral filaments.

SUBSTANCE: method involves forming and packaging felted insulating mats from fibrous materials, such as mineral filaments, composed of set of parallel strips moved by means of transportation device, said strips being moved through at least one branch of device, with following bringing of said strips to at least one feeding device for arranging strips one onto another to create at least one longitudinal stack of strips manufactured from mineral material; compressing said stack and cutting compressed stack of strips in transverse direction for forming felted insulating mats.

EFFECT: provision for producing and packaging of felted insulating mats without employment of large-sized transportation, cutting, compressing and packaging equipment, and reduced labor intensity.

13 cl, 6 dwg

FIELD: production of mineral fiber panels having one or more cavities of predetermined shape.

SUBSTANCE: method involves succession of the following steps: using mineral fiber web containing non-hardened or non-cured binder; providing lengthwise displacement of mineral fiber web; pressing into web one or more forming parts, preferably by placing forming part/parts on surface and compressing web portion containing forming part/parts on surface, or pressing one or more forming parts into web body, preferably by dividing web across its thickness into two strips; placing forming part/parts between said strips and compressing web portion containing forming part/parts between web strips, with said one or more forming parts defining in web one or more cavities of predetermined shape; hardening or curing binder and additionally cutting hardened or cured ready web into panels; according to another version, method involves using at least two mineral fiber strips containing non-hardened or non-cured binder; providing lengthwise displacement of mineral fiber strips and additionally compressing one of said one or more of mineral fiber strips; repeating succession of above operations. Mineral fiber panel comprises one or more cavities of predetermined shape, said panel being manufactured by means of various above described methods. Apparatus for manufacture of mineral fiber panels having one or more cavities comprises device for lengthwise displacement of mineral fiber web containing non-hardened or non-cured binder, one or more forming parts for forming in web one or more cavities of predetermined shape, rolls or other means for compressing of web, preferably web portion comprising one or more forming parts, drying in curing furnace for drying or curing of web and/or for simultaneous compression of web portion comprising one or more forming parts, and cutter for cutting of resultant web into panels. According to another version, apparatus is further equipped with one or more dividing tools for dividing mineral fiber web into at least two strips and device for lengthwise displacement of strips, and transfer device for bringing at least two strips together to thereby form laminated web and placing and/or pressing of forming parts in surface/surfaces of strips or in interface surface/surfaces between said strips.

EFFECT: wider range of methods, increased efficiency and improved quality of mineral fiber panels.

29 cl, 12 dwg

FIELD: textile industry.

SUBSTANCE: isolating material or filler consists of fibrous spherical parts made in the form of randomly entangled polyester fibers having super-fine titer of 1 denier or less.

EFFECT: increased continuity, elasticity and prolonged service life of isolating material or filler.

11 cl, 4 dwg

FIELD: chemistry of polymers, chemical technology.

SUBSTANCE: invention relates to polyolefin composition comprising crystalline propylene homopolymer showing the high melt flow rate and to a fiber and nonwoven material preparing from its. Polyolefin composition comprises from 5 to 45 wt.-% of propylene homopolymer of low viscosity showing the melt flow rate value from 250 to 550 g/10 min measured according to D-1238, the condition L (230°C/2.16 kg) after polymerization immediately, and from 55 to 95 wt.-% of olefin polymeric composition being preferably statistic copolymer of propylene and ethylene and/or (C4-C10)-alpha-olefin, or their mixtures with the content of propylene in the range from 90 to 99 wt.-%. Fiber of diameter from 15 to 23 microns can be shaped from the composition. Fibers can be used in making nonwoven materials. Nonwoven materials prepared from this polyolefin composition show the desirable combination of acceptable strength limit value in stretching, the excellent relative elongation value in transverse direction, good processing capacity and improved softness and draping capacity.

EFFECT: improved and valuable properties of composition and materials.

20 cl, 4 tbl, 2 ex

FIELD: manufacture of nonwoven fabric from filament or particles.

SUBSTANCE: method involves preparing foamed suspension; delivering said suspension onto perforated member comprising three-dimensional mold; forming fabric of three-dimensional shape, said fabric having shape substantially differing from flat shape, by removing foam from foamed suspension through perforated member; drying fabric. Apparatus for effectuating said method is also described. Method may be used for manufacture of wide range of products, including corrugated filters for air and liquids for automobiles, corrugated filters for aspiration masks and antibacterial filters, and also laminated cleaning articles with superabsorbing central layers, such as floor cleaning cloth which is formed so that it may be easily put onto mop base, and other articles.

EFFECT: increased efficiency, wider range and improved quality of products manufactured from fibrous fabric.

33 cl, 7 dwg

FIELD: textile industry; production of the polyester fibers helically-conjugated balls.

SUBSTANCE: the invention is pertaining to the field of textile industry, in particular, to production of the polyester fibers helically-conjugated balls, which may be used as the filler in such products, as the blankets, cushions, mattresses, cushions for the seats, backrests for the seats, coverlets, sleeping bags, the soft furniture and the soft toys, and also as the heat insulation for clothing and as the protective filler for the working clothes of different designation, including the heat-resistant clothes, moisture protective clothes, anti-gas protective clothes and cold protective clothes. The protective filler made out of the polyester fiber balls represents the helically-conjugated balls with the nominal linear density of 0.7- 0.9 tex, the nominal length of straightening of 25-39 mm, the twisted degree of 23.0-27.0 %,the twist stability of 50-95 %, the volume mass of 2.0-7.0 kg/m3, an elongation at the break of 40-50 %, the relaxation properties of the fibers at their compression in the mass of 75-80 %, the normalized humidity of 1.0-2.0 % and the specific breaking loading of 38-40 sn/tex. The technical result of the invention is the helically-conjugated balls reduced friction between the individual coils {balls} with the possibility of more free and independent movement and recovery of all their properties.

EFFECT: the invention ensures the helically-conjugated balls reduced friction between the individual coils and balls with the possibility of more free and independent movement with recovery of all their properties.

FIELD: textile.

SUBSTANCE: invention relates to the method of water absorbed non-woven fabric production including in series cleaning, rippling, spreading, watering, degreasing, bleaching of raw material and reeling of finished product.

EFFECT: decrease of item contamination rate; increase of tensile force; improvement of end product quality; reduction of production cost; saving of raw materials, energy resources and admixtures content in end product; provision of hygienic effects, softness and favourable effect to human skin; non-toxic, do not irritate and non-allergic; good water sorption, easiness and comfort in use.

16 cl, 3 dwg, 3 ex

FIELD: technological processes.

SUBSTANCE: invention is related to method for manufacture of at least partially plastic parts in means of travel in mold with at least one mold cavity. Method includes the following stages: mold is closed at least partially, at that at least one mold cavity is brought to the first position by means of at least one movable wall of at least one mold cavity. Then plastic is introduced in at least one mold cavity, after complete closure of mold and/or displacement, of at least one movable wall, at least one mold cavity is brought to the second position. At that at least one mold cavity in the second position has another volume compared to the first position, and then cavity is completely filled with plastic by means of at least one mold cavity installation from the first into the second position. At that mold is used, which has at least one mold cavity with at least one movable wall. At that control device is used for controlled displacement of wall between at least the first and second positions with the possibility to adjust wall displacement so that during use adiabatic release of heat takes place in plastic in mold cavity due to change of pressure in plastic and/or displacement. Part in means of travel may be manufactured by any method according to invention. Die mold for use in method according to invention has at least one cavity with movable wall, which is controlled for compression of plastic in mold cavity, when the mold is closed, as a result, adiabatic heat release takes place in plastic. Technical result is achieved during use of method and mold according to inventions.

EFFECT: reduction of pressure casting cycle duration, lowering of material consumption and reduction of undesirable stresses.

19 cl, 9 dwg

FIELD: textile, paper.

SUBSTANCE: method of making cotton pads, consisting in the fact that compacted bleached cotton is opened, and cotton linens are made from it, sent to belt conveyor laid one onto another. Afterwards they are fixed to each other with the help of water jets supplied under pressure at linens at both sides, and then fixed linen is dried, and afterwards punches are used to cut cotton pads out of it. At the same time inner layers of cotton linen are made of secondary raw materials that remains after cutting of cotton pads, for which purpose it is separated into fibres, and cotton linens are fixed to each other in two stages - first by water jets under pressure of 0.1-6 MPa, and then by water jets under pressure of 1-15 MPa.

EFFECT: increased coefficient of raw materials use in production of cotton pads.

2 cl

FIELD: construction.

SUBSTANCE: method to produce an insulating felt provides for formation of non-woven material from tangled polymer fibres by means of technological process of carding or garnetting, polymer fibres include from 55-80 wt %, of at least one stable fibre and from 20-45 wt % of at least one binding fibre, where the average fibre diameter makes from 12.0 to 20.5 microns and at least 55 wt % of fibres are curled. Also the method includes calibration and thermal fixation of the specified non-woven material to form an insulating felt, containing tangled and thermally linked polymer fibres.

EFFECT: produced felt provides good heat-insulation properties, has low cost, restores shape well after application of compression forces and may be easily installed in vertical or suspended position.

4 cl, 47 ex, 4 tbl

Up!