Method of applying hydrophobic and oleophobic coating to textile material and textile material with hydrophobic and oleophobic coating
FIELD: textile, paper.
SUBSTANCE: method for applying a hydrophobic and oleophobic coating to a textile material includes holding the textile material in a copolymer solution in supercritical carbon dioxide in a high pressure reactor, characterized in that said solution contains a copolymer containing fluorinated (meth)acrylic hydrophobic units affine to CO2, and (meth)acrylic functional units containing a functional group, and a cross-linking agent containing at least two functional groups reactive with the functional groups of the copolymer, said cross-linking agent being not part of said copolymer. The invention also relates to a textile material with a hydrophobic and oleophobic coating, having a wetting angle with a drop of water ≥130°, the index in the water-repellent ability test ATCC 22 is above 90 points, the index in the oil resistance test AATSS 118 is 6 points or higher, the vapour permeability in the vapour permeability test according to the standard ATSM E 96 (Procedure B) after modification not less than 0.95 from the result of the unmodified material, retaining water-repellent and oil-repellent properties and vapour permeability after 10 or more washes in a washing machine, carried out according to the standard ISO 6330 procedure, procedure 6A, obtained by the method according to the invention.
EFFECT: method according to the invention makes it possible to obtain a textile material with a hydrophobic and oleophobic coating resistant to repeated washing cycles in a washing machine.
18 cl, 2 dwg
FIELD: printing industry; processes.
SUBSTANCE: agent is stored in printing unit. Before applying the agent is maintained at operational temperature, which keeps it in liquid state, while contained liquid crystal components are in mez-amorphous state. Nematogene and/or chiral-nematogene liquid crystal components are homogenised in stirring apparatus prior to application. After crystallisation homogenised agent is milled to fine-crystal bulk and melt in chamber for paint.
EFFECT: simple and efficient method of liquid crystals application on trays.
FIELD: technology for manufacturing devices for creating a print on hard carrier, possible use for making plates, seals, stamps and other products.
SUBSTANCE: method is characterized by creation of hard holder with following fastening of resilient layer with relief image on its surface. Preliminarily in the surface of holder which contacts back side of resilient layer, at least one volumetric body is mounted, height of which above level of holder surface does not exceed 40% of resilient layer thickness.
EFFECT: possible recognition of authenticity of print on hard carrier, increased trustworthiness of documents and simplified technology for production of print creation device.
4 cl, 3 ex
SUBSTANCE: invention relates to composition of aqueous dye used in stenciling, to a method for preparing indicated composition of stenciling, using indicated dying composition for stenciling and to securities printed using indicated dying composition. Invention describes composition of aqueous dye for stenciling containing the following components: (a) emulsion of acrylic or urethane-acrylic copolymer taken in the amount 30-70 wt-%, preferably in the amount 35-60 wt.-%, and more preferably in the amount 40-55 wt.-% of self-cross-linking emulsion of acrylic or urethane-acrylic copolymer as measured for the total mass of composition; (b) cross-linking agent taken in the amount 0.25-3 wt.-%, preferably in the amount 0.5-2 wt.-%, and more preferably in the amount 1-2 wt.-% of mass indicated cross-linking agent as measured for the total mass of composition; (c) optional catalyst; (d) optional pigments, and (e) optional additives and wherein indicated cross-linking agent comprises at least two different functional activity in a single molecule. The first functional activity is chosen by so manner to form a covalent bond with indicated polymer before printing and the second of indicated functional activities is chosen by so manner to carry out cross-linking indicated polymer for hardening printed dye. Emulsion of acrylic or urethane-acrylic copolymer is chosen from group possessing self-cross-linking property and wherein the composition shows pH from 7.0 to 8.5, preferably from 7.5 to 8.3 and more preferably from 7.5 to 8.0. Invention describes a method for preparing above said composition of aqueous dye for stenciling and comprising the following steps: (a) preparing emulsion of acrylic or urethane-acrylic copolymer; (b) optional preparing catalyst, optional pigments and optional additives; (c) preparing a cross-linking agent able to form a covalent bond under the first conditions with polymer prepared in (a), and cross-linking prepared polymer under the second conditions; (d) thorough mixing components prepared by points (a), (b) and (c) and providing interaction of polymer prepared by point (a) with a cross-linking agent prepared by point (c) under indicated first conditions; (e) regulation of pH value of the composition in the range from 7.0 to 8.5. Also, invention describes using the indicated composition of aqueous dye as a dye for stenciling and security document with signs printed by using indicated composition of aqueous dye. Proposed composition shows improved stability and improved toxicological properties in the combination and excellent stability of printed and hardened dye to chemical and physical effects.
EFFECT: improved properties of dye, improved preparing method.
14 cl, 6 ex
FIELD: packaging industry.
SUBSTANCE: invention relates to multilayer packaging materials and relates to the coated woven material and the bag made of this material. It comprises the fabric of polymeric tapes. The fabric is coated with sealing layer. Part of the polymeric tapes has the tensile capacity which is less than 45 cN/tex and tensile elongation of more than 30%. The sealing layer is formed from a composition comprising at least one copolymer of ethylene/α-olefin, at that the composition has the density of from 0.905 to 0.930 g/cm3 and the melt flow index of from 3 to 20 g/10 min. The bag comprises the said fabric. The walls of the bag are at least partially composed of the woven material of polymeric tapes, at that each of the edges of the bag walls is provided with a neck for filling.
EFFECT: invention enables to produce the coated woven material, which provides reliable sealing without thick and expensive sealing layers.
20 cl, 13 dwg, 5 tbl
SUBSTANCE: invention relates to polymer processing, particularly production of synthetic leather which can be used for pool finishing. The bioresistant waterproofing polymer material includes a polyester base and a polyvinyl chloride coating. The base is made of cross-weave polyester threads with mesh size of 2x2 mm, wherein the weight ratio of the layers - front:intermediate:back is 9:1:9, respectively, and the weight ratio of the layers - polyester base:polymer coating is 1:18. The polyvinyl chloride coating is obtained from suspended polyvinyl chloride and additionally contains a mixture of plasticisers - dioctyl phthalate, dioctyl adipate, diglycidyl ester of 1,4-butanediol laproxide BD with weight ratio of epoxy groups of 24-34% and synthetic butadiene-nitrile rubber with weight ratio of acrylonitrile of 26-30% in ratio of 1:0.8:0.2:0.6, respectively; the stabiliser used is Baerostab UBZ 711-1x RF; the bactericidal additive is Bioneutral M 10; the composition is coloured using pigments.
EFFECT: invention provides resistance to wearing loads and atmospheric phenomena, the effect of microorganisms and formation of algae, temperature drops, as well as shearing strength of a welded joint.
4 tbl, 8 ex
SUBSTANCE: material includes chlorosulphonated polyethylene, filling agents (kaolin, titanium dioxide), fire retardant (decabromodiphenyloxide), vulcanising agents (magnesium oxide, zinc oxide) vulcanisation accelerators (thiuram D, 2-metcaptobenzothiazole), additionally contains fluralit (nanopolytetrafluoroethylene), nanoadditive "Cloisite 30B", polychloroprene, chloroparaffin-470, antimony trioxide, rosin, mixture of nefras and ethylacetate in ratio 1:1 and textile base - technical polyether fabric, or cotton-polyether fabric, or fibreglass fabric. Method of manufacturing light-weight rubber-polymer material includes application of rubber-polymer composition on textile base on adhesive spreading machine IVO 3220 with steam pressure in steam stoves of adhesive spreading machines 2.0-2.1 kgf/cm2.
EFFECT: manufacturing light-weight rubber-polymer material, providing protection against impact of toxic, aggressive chemical substances and open fire.
2 cl, 1 tbl, 3 ex
SUBSTANCE: invention relates to curable channel or pipe liners, e.g., for repairing damaged pipes, such as underground sewage and gas pipes, and a lining method. The lining includes a three-layered coating of thermoplastic polyurethane (TPU) on a fibrous mat made of nonwoven material. The TPU coating contains a barrier layer which prevents migration of styrene from the liner to the media used to force the liner against the damaged pipe and to activate the thermosetting resin. The thermosetting resin converts the liner from a flexible state to a rigid state as the liner is cured in situ inside the pipe.
EFFECT: invention provides a lining with high resistance to passage of styrene, which prevents contamination of the water or steam with styrene.
16 cl, 1 tbl, 5 ex
SUBSTANCE: invention relates to novel composite, including non-woven material and covering polymer layer. Composite contains material which includes polymer (P-1), selected from polyethylene, polypropylene, polyethyleneterephthalate and polyamide, and layer of coating with branching index g', equal or lower than 0.9, applied on at least one surface of non-woven material, and containing polymer (P-2), representing polypropylene or polyethylene. Method of composite obtaining includes stages of polymer (P-2) extrusion and covering non-woven polymer (P-1)-containing material with it.
EFFECT: invention makes it possible to obtain composite with good air-permeability and barrier properties.
16 cl, 3 tbl
SUBSTANCE: invention relates to the technology of producing composite polymeric materials which compensate for motion in or near one or more corresponding surfaces without detriment to the structural integrity thereof after attaching polymeric fabric thereto. The material contains polymeric fabric from a plurality of elastomeric fibres and a binding matrix. The matrix is selected from a group comprising liquid resins and binding substances, e.g. polyurethanes, polyureas, acrylic resins, epoxy resins and or mixtures thereof. The elastomeric fibres are spandex or block-copolymers of polyurethane and polyethylene glycol, optionally coupled with natural or synthetic fibres. The material is obtained by depositing the binding matrix on the fabric and vulcanising, followed by hardening. Also disclosed are methods of producing and using the polymeric fabric composition.
EFFECT: material can be used in applications which require packing, containment, protection and insulation.
30 cl, 6 ex
FIELD: textiles, paper.
SUBSTANCE: product comprises at least one textile material made of fibers/filaments, in particular in the form of filaments having partially inner pouncing of the impregnating material. The pattern penetrates at least partially the cross-section of the said first textile material, forming the impregnated areas and unimpregnated areas in accordance with the pouncing. The unimpregnated areas are air-permeable and can comprise a functional coating.
EFFECT: product is air-permeable and permeable to water vapor and has a reduced water absorption, upon its production the time of redrying is reduced, in one version the product exhibits additional improved fire-resistance.
22 cl, 15 dwg, 2 tbl, 8 ex
FIELD: process engineering.
SUBSTANCE: invention relates to light and textile industry, particularly, to light durable clothes and laminar materials for their fabrication. Textile material and porous polymeric fluorine membrane are glued together before or after membrane dyeing to produce laminar material with outer film surface and inner textile surface to fabricate the article of overcoat. Note here that laminar material features water steam permeability rate higher than 4000 g/m2 /24 hours an weight per unit area smaller than 400 g/m2 while outer film surface resists abrasive wear and is waterproof after abrasive wear.
EFFECT: overcoat with wear-proof outer film surface.
52 cl, 4 dwg, 4 tbl, 17 ex
FIELD: personal use articles.
SUBSTANCE: label contains a substrate having a face side and a rear side and a glue layer applied onto the label rear side. The glue side remains non-adherent but may be activated to become adherent. The glue layer contains a polymer composition of segmented polyurethane including crystalline compound ether segments. The composition may be reversibly converted from the non-adherent to the adherent condition. The method for attachment of a adherent label without a detachable overlay includes activation of the label non-adherent glue layer for it to become adherent and the label attachment to an object so that the glue layer contacts the object surface. The invention allows production of a label with a glue layer possessing good thermal stability, remaining adherent after activation during a period of time sufficient for the label application onto n object.
EFFECT: invention allows to use any paper or film material as the label substrate and to apply any available printing method.
13 cl, 16 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to protection against toxic and aggressive matters and maybe used for production of protective clothes of firemen. Proposed material with barrier layer consisting of mid reinforcing layer of cloth made of high-strength polyether fibre or high-strength aramide fibre or mix thereof. Outer and inner cover layers are arranged on both sides of aforesaid layer. Used threads represent two-component combined threads shaped to rods from aramide and/or polyether complex thread or yarn and rod braided by modified fireproof viscose thread or yarn with linear density of 10-30 tex. Fabric of mid reinforcing layer represents a linen, twill, sateen or satin weave with identical thread indices as to warp and filling. Inner cover layer is made of butyl rubber-based rubber composition. Outer cover layer is made of rubber composition based on copolymer of vinyaliden fluoride and chlorotrifluoroethylene “СКФ”-26 containing 18-22 mass parts of vinyaliden fluoride and fluopropylene-rubber “СКФ”-26 “ОНМ”. Material outer cover surface is coated with aluminium or copper or bronze or titanium nitride, coat thickness making 30-250 nm. Additional film barrier 18-26 mcm-thick layer is applied on inner cover layer consisting of five layers arranged as follows: polyolefin, oriented polypropylene copolymer, polyvinyl alcohol, oriented polypropylene copolymer and polyolefin.
EFFECT: high moisture resistance, draping characteristics and rupture and tear strength.
10 cl, 12 ex
FIELD: sanitary and hygienic facilities.
SUBSTANCE: invention relates to biodegradable film materials for manufacture of such articles as baby swaddling bands, female hygienic products, hospital bed-sheets, and the like. Film subjected to stepped stretching is made from polyester containing disperse phase constituted by inorganic filler. Film is characterized by steam passage above 1000 g/m2/day according to ASTM E96E and air permeability 30 cm3/cm2/min at air pressure 620.52 kN/m2. Film is manufactured by extruding polymer melt mixed with filler through slot extrusion die into cooling zone. Film is impermeable for liquids.
EFFECT: enhanced hygienic properties.
17 cl, 5 dwg, 2 tbl, 10 ex
FIELD: layered products.
SUBSTANCE: prepreg comprises polymeric binder and filler. The filler may be made of cords, belts, or textile.
EFFECT: enhanced strength.
2 cl, 3 tbl, 12 ex
FIELD: producing composition materials.
SUBSTANCE: composition material comprises at least one inner layer that has thermoplastic resin filled with heat-resistant fibers, at least one intermediate layer applied on the inner layer, and at least one surface coating sheet. The scraper blade made of the composition material is rectangular and corresponds to the shape of the surface of the shaft of paper-making machine.
EFFECT: enhanced durability.
20 cl, 2 tbl, 1 ex