Natural or artificial threads or fibres and spinning (D01)

D   Textiles; paper(37552)
D01            Natural or artificial threads or fibres; spinning(10845)

Textile type texturized nonwoven fabric, containing paper forming filament, calender roll and material manufacturing method // 2628381
FIELD: textile, paper.SUBSTANCE: calender roll is used to produce the texturized nonwoven material, containing the paper-forming filament. The calender roll includes a protruding relief, that includes: a base element, having the ring shape, at that the ring defines a top relative to the central part of the ring, defining the recess and the grinded surrounding area, at that the ring containing at least one radial channel, providing the recess communication with the grinded surrounding area in such a way to determine the discrete calendering surface; repeating of the specified base element along a plurality of rows and columns, substantially along the entire peripheral surface of the calender roll, at that the repeating is being regular, with the exception of a plurality of substantially longitudinally oriented parts and transversely oriented parts, at that the mentioned parts have limited size with respect to the size of the calender roll and are optionally distributed so as to define a plurality of the optionally distributed longitudinal and transverse lines in the texturized nonwoven material, containing the paper forming filament, forming a visually textile type texture.EFFECT: creation of the texturized nonwoven material, containing the paper forming filament, having the appearance of the textile type material with high quality, improved aesthetic characteristics.16 cl, 13 dwg

Casing for draw frame // 2626807
FIELD: textile, paper.SUBSTANCE: casing for a draw frame comprises a sound-insulating enclosure in the form of a hinged lid mounted on the vibro-active machine units; the sound-insulating enclosure is fixed to the head part of the machine, comprising combed strips, and vibration-sound-absorbing layers are fixed onto the inner enclosure surface. The thickness of the vibration-absorbing layer is 2-4 times the thickness of the lid material. The casing elements are mounted onto the machine by means of vibration-insulating rubber gaskets, the total rigidity of which is lower than the lid rigidity. According to the invention, the sound-absorbing element of the sound-insulating enclosure comprises a smooth surface and a perforated surface, between which there are two layers: a sound-reflecting layer adjacent to the rigid wall and a sound-absorbing layer adjacent to the perforated wall. The layer of the sound-reflecting material is made of the complex profile, in the form of evenly distributed hollow tetrahedrons allowing to reflect sound waves falling in all directions, and the perforated wall has the following perforation parameters: the hole diameter - 3÷7 mm, the perforation percentage - 10÷15%. As per shape, the holes can be made as holes having round, triangular, square, rectangular, or diamond profile. In case of non-circular holes, the maximum diameter of a circle inscribed in a polygon should be considered as the nominal diameter; basalt-based mineral wool with glass-wool lining is used as a sound-absorbing material. Also the sound-absorbing element can be made in the form of five layers, two of which, adjacent to the walls, are sound-absorbing layers of materials of different density, and three central layers are combined. The axial layer is made sound-absorbing, and two symmetrically located adjacent layers are made of a sound-reflecting material of a complex profile, consisting of uniformly distributed hollow tetrahedra with similar parameters.EFFECT: increased noise reduction efficiency.2 cl, 3 dwg
Kochetov casing for textile machine spindles // 2625427
FIELD: textile, paper.SUBSTANCE: casing for spindles of a textile machine contains an enclosure, installed on the spindle rail of the machine at the level of its spindles along their row, and vibration- and sound-absorbing layers fixed on its inner surface. The fence is made of the upper and lower parts, each of which consists of a body made of sheet angle sections with an angle of 90° at the apex, rigidly fixed to the spindle rail in its upper and lower parts, and a vertically disposed removable cover. The thickness of the vibration-absorbing layer, placed on plates, is 2-4 times the thickness of the cover and body plates. The casing elements are mounted on the machine by means of rubber vibration isolators. The overall rigidity of them is lower than the rigidity of the vibration-isolating suspension of the spindle. An elastic sheet vibration-absorbing material with internal loss ratio of not less than 0.2, or a composite material or plasticate can be used as a vibration-absorbing material. The sound-absorbing element of the enclosure contains smooth and perforated surfaces, between which there are two layers: a sound-reflecting layer adjacent to the rigid wall, and a sound-absorbing layer adjacent to the perforated wall. The sound-reflecting layer material includes of uniformly distributed hollow tetrahedra allowing to reflect the sound waves from all directions, and the perforated wall has the following perforation parameters: the hole diameter is 3-7 mm, the percentage of the perforation is 10-15%. Holes can be of round, triangular, square, rectangular or diamond shape. In case of unround holes the nominal diameter is regarded as the maximum diameter of the circumference, inscribed in a polygon. The sound-absorbing material is basalt-based mineral wool. The surface of sound fiber absorbers is treated with air-permeable porous paints or covered with air-permeable fabrics or nonwoven materials. According to the invention, between the sound-absorbing layer and the sound-reflecting layer material adjacent to it, there is an element of resonant type, made in the form of a rigid resonance plate with resonant holes that act as the neck of Helmholtz resonators. The volume functions of the Helmholtz resonator are performed by the layer of sound-reflecting material consisting of uniformly distributed hollow tetrahedra that allow to reflect sound waves from all directions.EFFECT: better noise reduction.3 dwg
ethod of manufacture of lignin-containing prediminary fiber, and also of carbon fibers // 2625306
FIELD: chemistry.SUBSTANCE: invention relates to a process for the production of lignin-containing precursor fibers for production of carbon fibers and/or activated carbon fibers, wherein: a) a solution containing at least one kind of lignin, as well as at least one fiber-forming polymer selected from the group consisting of cellulose or cellulose derivatives, at least one solvent selected from the group consisting of tertiary amine and/or ionic liquids b) transferred into a coagulation bath after extrusion of the solution spinning spinneret wet spinning method from a solution or spinning with an air gap, precipitating lignin precursor c) is stretched lignin precursor, at least 1.1 times, at a temperature of at least 60°C, wherein lignin thread is an economical starting material for the production of activated carbon and carbon fibers. The invention also relates to a method for manufacturing carbon fiber.EFFECT: increased productivity.15 cl, 4 ex
Kochetov acoustic emclosure for textile machine spindle // 2625082
FIELD: textile, paper.SUBSTANCE: acoustic enclosure for the spindles of a textile machine, containing a casing, installed on the machine spindle rail at the level of its spindles along their row, with vibration- and noise-absorbing layers fixed to its inner surface, and on the outside there are plates, cantilevered to it along the row of machine spindles, and a vibration absorbing layer on their lower surface. The spindles on the spindle rail of the machine are installed by means of elastic gaskets made of elastomer. The ratio of their total rigidity to the bending stiffness of the spindle rail lies in the optimum range of the following values: 0.01…0.1, and the thickness of the vibration-absorbing layer, placed on the plates, is 2…4 times the thickness of the plates. As the material of the vibration-absorbing layer, an elastic sheet vibration-absorbing material with a coefficient of internal losses of not less than 0.2 or a composite material or a plasticate are used. And as a sound-absorbing material of the casing, the elements of mineral wool, based on basalt, or mineral wool, or basalt wool, or fiber glass, covered with glass wool, or foamed polymer, polyethylene or polypropylene are used. The entire surface of the sound-absorbing material is covered with an acoustically transparent material. According to the invention, the spindle enclosure comprises of a sound-absorbing device made in the form of rigid and perforated walls, between which there is a multi-layer sound-absorbing element made in the form of five layers. Two of the layers, adjacent to the walls, are sound-absorbing layers of materials of different densities, and three central layers are combined. The axial layer is made sound-absorbing, and two symmetrically located and adjacent layers are made of a sound-reflecting material consisting of uniformly distributed hollow tetrahedra, allowing to reflect the sound waves falling in all directions. Each of the perforated walls has the following perforation parameters: the diameter of the holes is 3÷7 mm, the percentage of the perforation is 10%÷15%. Holes can be of round, triangular, square, rectangular or diamond shape. In case of unround holes the nominal diameter shall be maximum diameter of circumference inscribed in a polygon.EFFECT: better noise reduction.3 dwg

Improved fiber from polylactic acid // 2624303
FIELD: chemistry.SUBSTANCE: multicomponent fiber includes an inner component surrounded by a distinct component of the shell. The inner component is formed of polylactic acid, and shell component is formed by polymer additive, which increases toughener. Configuration of fiber, which comprises an inner portion/shell attaches many different useful properties to obtained fibers. Introduction of polymeric additive, which increases toughness of fiber, increases energy absorption capability stresses, arising during fiber drawing, which increases the overall rigidity and strength of the fibers. Moreover, the presence in the shell of additive component, which increases toughness, increases the binding with other fibers, e.g., during the formation of nonwoven webs. Another advantageous effect of the invention is that the configuration of the inner part/shell can be obtained from the thermoplastic composition, in which polylactic acid and a polymer additive, that increases the impact strength, are mixed with each other.EFFECT: receiving fibers from polylactic acid having good parameters elongation and high strength.20 cl, 8 dwg, 10 tbl, 55 ex

ethod for obtaining fibrous material containing oxide nanoparticles from thermoplast melt // 2624189
FIELD: chemistry.SUBSTANCE: method, like the prototype, involves forming a fibrous material by laminating a melt of a thermoplastic polymer by the action of a gas stream containing solid particles. Particles penetrate into the surface layer of the softened material, and particle consolidation occurs, when the material passes into a solid aggregate state. New is that the formation of fibers occurs under the influence of an unheated gas stream containing oxide nanoparticles or small droplets of liquid, in which such nanoparticles having an ambient temperature are dispersed. Gas ejection is provided, in which an additional flow of unheated gas is generated around the jet of molten polymer fed. The particle size is less than 100 nm.EFFECT: production of fibrous material with oxide nanoparticles fixed on its surface with one or, at least, two kinds, with minimal energy costs and simplification of the technological process.2 dwg

Structures of fusion protein in spider silk for binding to organic target // 2624036
FIELD: biotechnology.SUBSTANCE: invention relates to obtaining a polymeric protein structure capable of selective interaction with organic targets and can be used in medicine. The polymer protein structure contains a recombinant fusion protein, as a recurring structural element, which includes parts B, REP and CT.EFFECT: invention allows for producing a protein structure, which can be used as an affine medium and scaffold material for cells.41 cl, 34 dwg, 5 tbl, 28 ex
Wholly aromatic couple-type sopoliamide drawn fiber and its manufacturing method // 2623253
FIELD: chemistry.SUBSTANCE: wholly aromatic couple-type sopoliamide drawn fiber has a tensile modulus of 630 cN/dtex or more, a dry heat creep 2.0×10-4 % or less after 10 hours at 80°C. Hot-stretch fiber is at high voltage and at a temperature in certain ranges of para-substituted aromatic sopoliamide fiber type.EFFECT: creation of a wholly aromatic couple-type sopoliamide fiber having excellent tensile modulus.8 cl, 2 tbl, 10 ex
Porous polyolefin fibers // 2622431
FIELD: chemistry.SUBSTANCE: polyolefin fiber is formed from a thermoplastic composition comprising a continuous phase which contains a polyolefin matrix polymer and an nanoinclusion additive. The nanoinclusion additive is dispersed in the continuous phase as discrete nanoscale phase domains. When pulled, the nanoscale phase domains are able to interact with the matrix in a unique way creating a network of nanopores.EFFECT: technique of porous structure creation in polyolefin fibers to provide a reduced density.41 cl, 14 dwg, 5 tbl, 7 ex

Production process of composite fiber based on hydrolysis lignin with polyacrylonitril // 2621758
FIELD: technological processes.SUBSTANCE: invention relates to the production of sorbents having a well-developed microporous structure, controlled pore size and strength characteristics sufficient for use as sorbents made from activated carbon fibers obtained from polyacrylonitrile with the highest content of hydrolytic lignin. A method for producing a composite fiber based on hydrolytic lignin with polyacrylonitrile obtained by wet spinning with forcing-through the spinneret holes of mixtures of hydrolytic lignin and polyacrylonitrile solutions in dimethylsulfoxide in which the amount of hydrolysing lignin is from 70 to 80 wt % is fed into a precipitation bath with distilled water for coagulation of a polymer composite solution in the form of a fiber in which subsequent carbonization is carried out under nitrogen and activation by chemical reaction, and the composite fiber is subjected to an additional orientation stretching by 5-10% during the coagulation step in the precipitation bath, with the formation of micropores after carbonization with a monodisperse distribution of 3-18 mcm with channels having a regular combination of outer and closed pores of an elongated shape with expansion from the center of the fiber to its outer surface and anisotropic orientation along the entire length of the composite fiber.EFFECT: composite fiber with sorption properties is obtained.1 dwg, 1 tbl, 5 ex
Polysaccharide fibers for wound dressings // 2621114
FIELD: biotechnology.SUBSTANCE: fiber is a drawn fiber containing Alginate and psyllium seed shells polymers as the only structural components of fiber. Nntimicrobial silver saltmay can be included. The fiber can be produced by extrusion of alkali-solubilized psyllium seed shells aqueous mixture and sodium alginate into a bath of calcium chloride solution.EFFECT: creation of biologically produced materials with a unique combination of functional properties and environmentally friendly distinctive features.20 cl, 5 ex
Polylactide fibers // 2621104
FIELD: chemistry.SUBSTANCE: polylactide fibers are made from a polylactides mixture. One polylactide has a ratio of R-lactide and S-lactide units of 8:92 to 92:8. The second polylactide has a ratio of R-lactide and S-lactide units of ≥97:3 or ≤3:97. The ratio of R-lactide units and S-lactide units in the mixture is 7:93 to 25:75 or 75:25 to 93:7. The polylactide fiber comprises at least 5 J of polylactide crystallites per gram of polylactide resin in a fiber. The invention also relates in particular to shelters for plants in the form of a woven or nonwoven fabric comprising these polylactide fibers, as well as to subterranean formations treatment. Subterranean formations treatment involves treatment fluid introduction into the subterranean formation. The fluid comprises a liquid phase and a plurality of the said inventive polylactide fibers dispersed in a liquid phase.EFFECT: increased efficiency of fibers.17 cl, 1 tbl, 8 ex

Carbon nanotube fiber with a low specific resistivity // 2621102
FIELD: chemistry.SUBSTANCE: fibers are prepared by wet spinning, comprising the steps of feeding a spinning solution containing carbon nanotubes to a spinneret, spinning solution extruding through at least one spinning orifice in the spinneret to form the spun carbon nanotube fibers, spun carbon nanotube fibers coagulating in a coagulation medium to form coagulated carbon nanotube fibers, where the carbon nanotube fibers are drawn with a draw ratio greater than 1.0, and where the carbon nanotubes have a length of at least 0.5 microns.EFFECT: invention provides carbon nanotube fibers with a resistance below 120 microO⋅cm, high elasticity modulus.18 cl, 2 dwg, 1 tbl, 7 ex

ethod and device for manufacture of solid fibers or films, and use of the device for the method implementation // 2621101
FIELD: technological processes.SUBSTANCE: method is performed by solid material fibers or films manufacturing from a liquid material by extruding this liquid through one or more extrusion holes and curing the material in a receiving bath. The molded material between the extrusion holes and receiving bath is guided by a lateral gas flow. In this case, the gas flow is divided into a heated partial flow and a cooling partial flow. Moreover, the material, before it is introduced into the receiving bath, is brought into contact first with the heated partial flow, and then with the cooling partial flow.EFFECT: prevention of solid particles sedimentation and separation from the material, prevention of stickiness of the material before the receiving bath.29 cl, 8 dwg, 1 tbl, ex 4

Draft assembly for roving draft // 2620490
FIELD: textile, paper.SUBSTANCE: invention relates to a draft assembly for roving draft with drafting fields formed by input, middle and output pairs of rollers, and the subsequent sealing area, and upper feed rollers are connected to output upper rollers through cell, and a load spring, which is designed as a leaf spring affects the cell towards the lower feed rollers. The invention provides that the cell has the first guide and a receiver with an inner diameter which is slightly greater than the diameter of the upper output rollers pair axis on which the cell is suspended, and that the loading spring is at one end fixedly connected to the rotary handle, and is slidably connected to the cell containing feed upper rollers in the area of its opposite free end through intermediate link.EFFECT: improved device reliability.7 cl, 3 dwg

Fibers from renewable low density polyesters // 2620415
FIELD: chemistry.SUBSTANCE: fibers are obtained from a thermoplastic composition which comprises hard renewable polyester, has a porous structure and a low density. To obtain such a structure, a renewable polyester is mixed with a polymer additive that increases the impact strength, so that the additive can be dispersed as discrete physical domains in a continuous matrix of renewable polyester. Then, fibers are formed which is subjected to tension or stretching at a temperature below the glass transition temperature of the polyester, i.e. subjected to cold drawing. The deformation force and stress at elongation during stretching leads to disruption of adhesion in the renewable polyester matrixin the areas adjacent to the discrete domains. As a result a mesh structure is obtained of pores located near the discrete domains, which by their proximity may form bridges between the pore boundaries, acting as internal structural "hinges" that promote stabilization of the mesh structure and increase its ability to dissipate energy.EFFECT: obtaining of fibers from renewable polyester with low density and good mechanical properties.20 cl, 2 dwg, 8 tbl, 11 ex

ethod of moulded parts manufacturing // 2619968
FIELD: technological processes.SUBSTANCE: method and device for manufacturing of moulded parts from the base material, namely the pulp, proteins, polylactides or amylum or mixtures from these substances, which is mixed with a solvent to form the moulding solution, and then this solvent at least partially is to be removed from the mouling solution and the mouling solution is fed into the moulding device. According to the invention, the mouling solution is fed into a vertical cylindrical thin-layer evaporator and in a horizontal cylindrical thick-layer dissolver. The moulding solution is diluted in a thick-layer dissolver or at the subsequent unloading from it upto the viscosity required for moulding, achieving the original consistency. At that, the thin-layer evaporator and/or thick-layer dissolver is directly connected to each other through their product chamber.EFFECT: improved method.12 cl, 1 dwg

Fabric composition including elastic fibers // 2619647
FIELD: textile, paper.SUBSTANCE: provided product comprises a multi-directional fabric of the first reinforcing fiber tows extending in the first direction, and the second reinforcing fiber tows extending in the second direction. The filaments in the first fiber tows extend beyond the fabric borders, and are distributed. Strands are imbedded into resin.EFFECT: improved performance.19 cl, 13 dwg

ethod of preparing raw flax material layer for processing // 2619035
FIELD: agriculture.SUBSTANCE: in method of preparing raw flax material layer for processing, comprising the bidirectional carding 1 of the layer, levelling 4 the stalks by butt ends and thinning 2 the layer; after the bidirectional carding 1 of the layer, thinning 2 the layer, then the unidirectional carding 3 of the layer and levelling 4 the stalks by butt ends are carried out; wherein the cardings 1, 3 of the layer are carried out by carding elements which move together with the layer in the direction of its movement, and the unidirectional carding 3 is carried out toward the top of the stalks with overlapping the butt area of the layer carding.EFFECT: increasing the yield of long fibers due to improving the quality of raw flax material preparation before its mechanical processing on production process lines.1 dwg
Light high-strength waterproof composite material and method of its manufacture // 2618882
FIELD: chemistry.SUBSTANCE: invention relates to the field of lightweight high-strength and water-resistant composite materials (CM) based on organic fibrous fillers made of ultra-high molecular weight polyethylene (UHMWPE) and a polymer binder and can be used in structural elements in various fields of engineering: aviation, machinery and shipbuilding, chemical, defence, etc. A lightweight, high-strength, water-resistant composite material made of an organic fiber filler based on high-strength, high-modulus, multifilament polyethylene fibers whose surface has been pretreated is modified by an electric discharge in a working plasma gas environment containing a polymeric binder based on an epoxy resin with an amine hardener in which, as an organic filler It contains fabrics of various interlacing on the basis of fibers from ultrahigh, the surface of which has been pretreated - modified in an AC discharge at a frequency of 50 Hz, as an epoxy resin of a polymeric binder contains a mixture of epoxydian (A) and epoxyaliphatic (B) oligomers in the ratio A: B from 10:1.5 to 10:2.5, as the amine curative is a cycloaliphatic amine, and further comprises a polyamide resin, which is a reaction product of polyamines with vegetable oil acids, a mixture of oligoethercarbonates, a fluoropolymer urethane, a silane type nanomodifier with the ratio of components, wt. parts: the above-mentioned organic fiber filler is 150-600, the epoxy-diene oligomer (A) is 100, the epoxy-aliphatic oligomer (B) is 15-25, the silicone-type nanomodifier is 0.05-0.65, the mixture of oligoethercarbonate is 13-33, the urethane prepolymer - 3-12, cycloaliphatic amine - 12-30, the above-mentioned polyamide resin - 6-17. A method for manufacturing a light high-strength and water-resistant composite material is also described.EFFECT: light high-strength waterproof composite with improved physicomechanical properties and water resistance of CM with an ecological purity and technological simplicity of the process is obtained.7 cl, 3 dwg, 2 tbl

ultifunctional fabric // 2617356
FIELD: textiles, paper.SUBSTANCE: invention relates to the textile industry. The fabric is proposed, which comprises porous fibers. The porous fibers are formed from a thermoplastic composition comprising a continuous phase comprising the matrix polymer. The microinclusion additive and the nanoinclusion additive can also be dispersed in the continuous phase in the form of discrete domains, and in the composition a porous network is determined, which includes a plurality of nanopores with an average cross-sectional size of about 800 nanometers or less.EFFECT: invention enables to improve breathability, water permeability, heat insulation and flexibility of fabric.37 cl, 8 dwg, 5 tbl
Fencing for textile machine spindles // 2615943
FIELD: textile, paper.SUBSTANCE: fencing for the textile machine spindles contains a machine mounted on brackets on a spindle bar, a metal casing on the inner surface of which there is a vibration-absorbing layer made in the form of an elastic sheet vibration-absorbing material with an internal loss factor of not less than 0.2, or a composite material, or plastic, at that, the thickness of the vibro-absorbing layer placed on the slats is 2…4 times larger than the thickness of the slats, the spindles rotate from the belt drive and are fixed to the spindle beam through elasto-damping gaskets made of elastomer, and the ratio of their total rigidity to the flexural rigidity of the spindle beam lies in the optimal range of values: 0.01…0.1, and the metal casing is located in the zone of spindles along their row, is box-shaped and covers both sets of spindles of the machine, and The slats are placed on the casing on its inner side and on both sides, upper and lower, are covered with vibration-absorbing layers with sound-absorbing layers placed on them, while on the upper and lower planes of the casing, the technological holes Z1 and Z2 are drilled, the ratio of the total area F1 of the technological holes to the total area of the casing F lies in the optimum range of values: F1/F=0.1…0.4. According to the invention, the sound-absorbing element of the spindle fencing is made in the form of a rigid and perforated walls, between which there are two layers: a sound-reflecting layer adjacent to the rigid wall and an acoustic-absorbing layer adjacent to the perforated wall, the sound-reflecting material layer is made of a complex profile consisting of uniformly distributed hollow tetrahedra that allow to reflect the sound waves falling in all directions, and the perforated wall has the following perforation parameters: the hole diameter is 3÷7 mm, the perforation percentage is 10÷15%, and the holes can be made in the form of round, triangular, square, rectangular or diamond-shaped profile holes, while in the case of non-circular holes, the maximum diameter of the circle inscribed in the polygon should be considered as nominal diameter, and mineral wool on a basalt basis is used as a sound absorbing material, while the surface of fibrous sound absorbents is treated with porous paints that pass air or is covered with air-permeable fabrics or nonwovens.EFFECT: better noise reduction.2 cl, 3 dwg
Cover for draw frames // 2615257
FIELD: textile, paper.SUBSTANCE: housing for draw frames with a sound-insulating enclosure (a hinged lid), mounted on the machine's vibrating parts. The sound-insulating barrier is fixed to the head of the machine with combed strips with vibration and sound-insulating layers fixed onto the inner surface of the enclosure. The thickness of the vibration-absorbing layer is 2…4 times the thickness of the lid material. The elements of the housing are mounted onto the machine by means of rubber isolators, whose total rigidity is lower than the rigidity of the lid. According to the invention, a sound-absorbing sound-insulating element is designed as a rigid wall and a perforated wall, with two layers in between: a reflecting layer next to the rigid wall and a sound absorbing layer next to the perforated wall. A reflecting layer material is in the form of evenly distributed hollow tetrahedrons allowing to reflect the sound waves from all directions, and the perforated wall has the following perforation parameters: hole diameter - 3÷7 mm, percentage of perforations 10%÷15%. Holes can be of round, triangular, square, rectangular or diamond shape. In case of non-circular holes the nominal size is regarded as the maximum diameter of the polygon that fits in a circle; the used sound-absorbing material is basalt-based mineral wool basis. The surface of fibrous absorbers is covered with porous paints that let through air; or absorbing material of the sound absorbing unit of the soundproofing barrier is porous sound-absorbing material, such as foamed aluminium or cermets-shell rock or stone with a degree of porosity in the range of optimal values: 30÷45% or metal-based foam or material in the form of a compressed aggregate of solid vibration-damping material such as elastomer, polyurethane, or plastic, and porous mineral piece materials such as pumice, vermiculite, kaolin, slag cement or other binder, or synthetic fibers. The reflecting material of the sound-absorbing element of the body is made of aluminium alloys, subsequently filled with titanium hydride with the density of air within 0.5…0.9 kg/m3 with the following strength properties: compressive strength within 5…10 MPa, flexural strength in the range 10…20 MPa, such as foamed aluminium or sound insulating plate of glass staple fiber material with the density of 60÷80 kg/m3.EFFECT: better noise reduction.2 dwg
Casing for textile machine spindles // 2615246
FIELD: textile, paper.SUBSTANCE: casing for the spindles of the textile machine is comprised of fencing mounted on the spindle tool bar of the machine at the level of its spindles and along them, with a sound-absorbing layer attached to its inner surface. The fencing consists of the upper and lower parts, each of which is a body made of sheet metal parts with an apex angle of 90°, rigidly secured to the spindle beam at its top and bottom, and a vertically extending removable lid. The thickness of the vibration-absorbing layer is 2…4 times the thickness of cover plates and the housing. The housing elements are mounted on the machine by means of rubber isolators, the overall rigidity of which is lower than the rigidity of the vibration-isolating suspension spindle grommet, absorbing elastic sheet material with internal loss ratio of not less than 0.2, or a composite material or compound can be used as vibration-absorbing material. According to the invention, the sound-absorbing element is designed as a rigid wall and a perforated wall, with two layers in between: the reflecting layer next to the rigid wall and the sound absorbing layer next to the perforated wall. A reflecting layer material is in the form of evenly distributed hollow tetrahedrons allowing to reflect sound waves from all directions, and the perforated wall has the following perforation parameters: hole diameter - 3÷7 mm, percentage of perforations 10%÷15%. Holes can be of round, triangular, square, rectangular or diamond shape. In case of non-circular holes the nominal size is regarded as the maximum diameter of the polygon that fits in a circle; the used sound-absorbing material is basalt-based mineral wool basis. The reflecting material of the sound-absorbing element of the body is made of aluminium alloys, subsequently filled with titanium hydride with the density of air within 0.5…0.9 kg/m3 with the following strength properties: compressive strength within 5…10 MPa, flexural strength in the range 10…20 MPa, such as foamed aluminium or sound insulating plate of glass staple fiber material with the density of 60÷80 kg/m3.EFFECT: better noise reduction.2 cl, 2 dwg

Filaments containing microfibrillary cellulose, fibrous non-woven fabrics and method of their production // 2615109
FIELD: textile, paper.SUBSTANCE: cellulose textile filament obtained from fibers of the microfibrillary cellulose and thickening agent, as well as precursor spinning solutions for spinning of such filaments, non-woven fabrics obtained from such cellulose textile filaments, and the method of production of such filaments and non-woven fabrics containing such filaments are expressed in this document. One of the advantages of these filaments is the eco-sensitive method, by which they are produced, because the water-based spinning solution is used, which does not require any chemical solvents in contrast to other methods, such as applicable ones during production of Lyocell fibers. Additionally, the method does not contain any stages of washing-off or extraction, as well as it does apply the source of cellulose fibers, which is widely used and renewable.EFFECT: document reveals the properties of the filament and the methods of production of such filaments, as well as describes advantages of such filaments.13 cl, 3 dwg, 3 tbl

Combination die for production of nanofibrous and microfibrous materials // 2614393
FIELD: manufacturing technology.SUBSTANCE: combined die for production of nanofibrous or microfibrous materials under the present invention comprises a thin-wall electrode and the first non-conducting body adjacent to the first wall of the said thin-wall electrode. Said first body has a wall facing the thin-wall electrode having multiple grooves, herewith the said grooves lead to the distal end of the combined die and have their own proximal ends connected to a source of the formed mixture. Thin-wall electrode, as well as the first non-conducting body, can have either a plate-like or a cylindrical shape. Combined die may additionally include the second non-conducting body adjacent to the second wall of the thin-wall electrode and guiding air from the proximal end to the distal end of the die. Combined die is easily disassembled and cleaned, since forming the fibre capillaries have the shape of grooves formed on surfaces of the first or the third non-conducting bodies.EFFECT: proposed is a composite die for production of nanofibrous or microfibrous materials.6 cl, 5 dwg, 3 ex

Device for fibrous materials production from molten thermoplastics // 2614087
FIELD: chemistry.SUBSTANCE: device for fibrous materials production from molten thermoplastics comprises a housing consisting of upper and lower parts between which a pressurized chamber is formed with an opening for energy carrier supply, and an annular working nozzle communicating with the pressure cavity, wherein an axially symmetric funnel is formed on the top of the housing for molten thermoplastics reception, its outlet portion external surface forms one of the working nozzle walls. At that, the hosuing parts are mounted to provide linear displacement of the upper part relative to the lower along the axis by between 0.0014D and 0.4D, where D is the smallest diameter of funnel, and their fixation in this position. The device comprises means to change and fix geometrical dimensions of the working nozzle, which is a threaded connection of the housing parts, the upper part has four locking holes located circumferentially at angular coordinates 0°, 15°, 187.5° and 202.5°, the lower part has 12 threaded holes with an increment of 30° around the circumference of the same diameter, used for locking screw installation in one of the possible matches of the upper and lower housing holes, that allows to discretely adjust the annular working nozzle clearance in one of 48 positions.EFFECT: simplified design of the device for fibrous materials production from molten thermoplastics, higher fibers quality, in particular, reduced amount of non-fibrous inclusions, extended raw material range for fibrous materials production.3 cl, 2 dwg

Device and method of manufacturing nonwoven spun fabric of elementary fibres // 2613869
FIELD: manufacturing technology.SUBSTANCE: device for production of non-woven spun fabric of elementary fibres, including dies, cooling chamber with possibility to feed process air into it for cooling of elementary fibres located between dies and cooling chamber monomer device for forced air discharge, exhaust device and collector for laying of elementary fibers in nonwoven fabric. Cooling chamber consists of two sections of cooling chamber, while process air can be forced fed from first upper section of cooling chamber in monomer device for forced air discharge with volumetric flow rate VM. Process air escapes from first upper section with volumetric flow rate V1 in second lower section of cooling chamber. Ratio of volume flow rate of VM/V1 ranges from 0.1 to 0.3.EFFECT: device and method of making nonwoven spun fabric of elementary fibres are proposed.15 cl, 2 dwg

ethods of medical active agent delivery by injection of individual health articles containing filament // 2613316
FIELD: medicine, pharmacy.SUBSTANCE: invention refers to medicine and is represented by methods of medical active agent delivery to a mammal. The method includes a stage when the medical article comprising one or more filaments, consisting of: base material of 10-50% by weight, based on dry filament, selected from natural polymers, synthetic polymers, sugars and combinations thereof; medical active agent of 50% by weight, based on dry filament, and moisture less than 20% by weight based on filament, is injected to a mammal. Filaments are obtained by meltdown blowing or by forming liquid film fibers and constitute a nonwoven fabric with a surface density of 20-1000 g/m2. The medical active agent is able to be released from the nonwoven fabric when it is exposed to the conditions of target application.EFFECT: invention delivers higher levels of medical active agents to a mammal.12 cl, 4 dwg, 7 ex
ethod of producing fibres from carbon nanotubes // 2612716
FIELD: chemistry.SUBSTANCE: invention relates to chemical engineering of fibre materials and a method of producing fibres from carbon nanotubes, which can be used for producing high-strength, high-modulus, electrically conducting composite materials of special purpose. Method of producing is carried out by exposing carbon nanotubes to a dispersion in a liquid medium, with subsequent removal of liquid medium. Medium used is a chlorine-containing organic solvent. Exposure involves mixing a dispersion of nanotubes with organosilicon liquid located between electrodes, wherein electric field intensity is 5–20 kV/cm, which is determined by formula E = U/d, where E is electric field intensity, kV/cm, U is voltage applied to electrodes, kV, d is distance between electrodes, cm.EFFECT: invention provides technological effectiveness of producing fibres from carbon nanotubes.1 cl, 5 ex
High modulus high strength uhmwpe fiber and method for its production // 2612714
FIELD: chemistry.SUBSTANCE: invention relates to high modulus high strength fiber made of ultrahigh molecular weight polyethylene (UHMWPE) and a method for its preparation. Methods are described for obtaining threads and multithread yarn from UHMW polyethylene (UHMWPE), as well as the yarn and products made thereof. Each method provides UHMWPE threads with strength of 45 to 60 grams/denier.EFFECT: invention provides an effective way to create yarn from ultrahigh molecular weight high strength polyethylene or with higher productivity on an industrial scale.10 cl, 6 ex
Protective material and protective products of such material // 2612696
FIELD: textile, paper.SUBSTANCE: protective material for work in the conditions of external influences, such as electromagnetic field radio frequency bands, electric field of industrial frequency, and switching and stepping voltage and/or electric arc, is made of conductive fabric composed of filaments on the basis of meta-aramid fibers based on poly m-phenylene isophthalamide and/or its derivatives and a stainless metal staple and/or monofilament fibers in a ratio of 70:30 to 30:70 pts. wt. respectively, with a density of 250 to 400 g/m2 and heat resistance at not less than 13 cal/cm2 minimum density. Stainless metal fiber for providing corrosive resistance is made of stainless iron-based steel alloy with an additive selected from a number of chromium, nickel, titanium, carbon, manganese, copper, boron, vanadium, niobium, aluminum, tungsten, molybdenum. The fabric is adapted to coloring by using an appropriate hue aramid fiber and a linen weaving (1/1) or broken twill (2/1 or 3/1) are usually used. The protective product is made in the form of a garment, or hat, or hood, or helmet, or screened helmet, or shoes, or protective cover, or shoe covers, or gloves, or mittens, or socks.EFFECT: invention allows for the possibility of wet washing without loss of protective properties and protect against electrical and thermal injuries when hitting an electric arc in a person.8 cl, 1 dwg
ethod for production of aromatic polyimide nanofiber based material // 2612280
FIELD: chemistry.SUBSTANCE: method is described for production of a polyimide nanofiber based material including electrospinning of polyamide acid solution in the solvent in which the solution containing not more than 12 wt % of polyamide acid in aprotonic solvent is used to obtain the film by the method of electrospinning through split draw die to the support; the film is removed from the support and dissolved, in the quantity ensuring polyamide acid content in the solution of 12-20 wt %, in the mixture aptoronic solvent : benzoid solvent with benzoid solvent content being 20-70 vol.%; the solution is supplied at room temperature through electrode- draw die to electric field with voltage of 15-35 kV; the material deposited on the anode is subjected to thermal treatment at a temperature of 370-420°C for 60 min; the target product consists of aromatic polyimide nanofibers with diameter of 50-700 nm and has decomposition temperature higher than 500°C in the inert medium in mixture.EFFECT: production of aromatic polyimide nanofiber based material using the method of electrospinning of polyamide acid at room temperature.6 dwg, 5 ex

Solvent-based methods for production of graphene nanoribbons // 2609915
FIELD: chemistry.SUBSTANCE: invention relates to chemical industry and nanotechnology. Plurality of carbon nanotubes is exposed to a source of alkali metal in presence of an aprotic solvent and in absence of protic solvent. Carbon nanotubes opened in a direction parallel to their longitudinal axes are obtained. To obtain non-functionalised graphene nanoribbons, opened carbon nanotubes are exposed to a protic solvent. To obtain functionalised graphene nanoribbons, opened carbon nanotubes are exposed to an electrophile. Obtained graphene nanoribbons have specific conductivity of 0.1–9,000 S/cm.EFFECT: invention can be used for production of composites and fibres for displays, deicing circuits, gas-permeable composites and screens.52 cl, 36 dwg, 6 ex, 1 tbl
Coloured in spinning purely aromatic polyamide meta-type fibre // 2609913
FIELD: textile.SUBSTANCE: invention relates to colored in spinning purely aromatic polyamide meta-type fibre, used as heat resistant and fire-resistant fibres preferably in field of protective clothes. Coloured in spinning purely aromatic polyamide meta-type fibre has residual solvent content of 0.1 wt% or less per total fibre weight.EFFECT: wherein colored in spinning purely aromatic polyamide meta-type fibre has higher resistance to decoloration and color fading under exposure to light and higher stability of dimensions at high temperature.5 cl, 1 tbl, 4 ex

Complex thread forming spinneret // 2608917
FIELD: manufacturing technology.SUBSTANCE: complex thread making spinneret has first surface and second surface parallel to first surface, and comprises plurality of spinning holes, wherein each spinning hole contains: inlet opening, tapered channel and cylindrical shaped capillary. All capillaries outlet sides are located in spinneret second surface plane, wherein spinneret comprises, at least, first group of spinning holes with capillaries and second group of spinning holes with capillaries, wherein second group of spinning holes capillaries have smaller L/D ratio, than first group of spinning holes capillaries, and all capillaries have same diameter, and all capillaries diameter is 100 mcm or less, so that complex thread, made with help of spinneret, has distribution of elementary threads of same diameter.EFFECT: according to invention, to reduce elementary threads breakage during complex thread molding, drawn with high drawing spinneret is used.14 cl, 1 dwg, 1 tbl, 2 ex
Barrier for spindles of a textile machine // 2607482
FIELD: textile and paper.SUBSTANCE: invention relates to textile industry and concerns noise-attenuating barrier for textile machines. Barrier for spindles of a textile machine comprises a metal casing installed using brackets on a spindle bar of the machine, on the inner surface of the metal casing there is a vibration-absorbing layer, made in the form of elastic sheet vibration-absorbing material with internal loss coefficient not lower than 0.2, or composite material, or plasticate of “Agat”, “Antivibrat”, “Schwim” type. Thickness of the vibration-absorbing layer arranged on plates 2…4 times exceeds thickness of the plates. Spindles turn from a belt drive and are secured on the spindle bar of the machine by means of elastic damping gaskets from elastomer. Ratio of their total stiffness to bending stiffness of the spindle bar is within optimal range of 0.01…0.1. Metal case is located in the zone of spindles along their row and is box-shaped, and covers both rows of spindles of the machine. Plates are arranged on the casing on its inner side and on both sides, top and bottom, are coated with vibration-absorbing layers with sound-absorbing layers arranged on them. On upper and lower planes of the casing there are process holes Z1 and Z2. Ratio of total area of F1 of the process holes to the total area of casing F is within optimal range of values F1/F=0.1…0.4. Sound-absorbing element of the barrier of spindles comprises a smooth surface and a perforated surface, between which a multilayer sound-absorbing structure is arranged, made in form of rigid and perforated walls, between which two layers are arranged: sound-reflecting layer, adjacent to rigid wall, and sound-absorbing layer, adjoining perforated wall. Layer of sound reflecting material is made with complex profile, consisting of evenly distributed hollow tetrahedrons, which enable to reflect sound waves incident in all directions. Perforated wall has the following perforation parameters: hole diameter – 3÷7 mm, perforation percentage – 10÷15 %. Holes can be made as holes of circular, triangular, square, rectangular or rhomboid profile. In case of non-circular holes, it is necessary to consider as nominal diameter maximum diameter of circle inscribed in polygon. Sound-absorbing material used is mineral wool on basalt base of “Rockwool” type, or mineral wool of “URSA” type, or basalt wool of P-75 type, or glass wool lined with glass felt, or foamed polymer, for example, polyethylene or polypropylene. Surface of fibrous sound absorbers is treated with special porous air-permeable paints (for example, “Acutex T”), or coated with air-permeable fabrics or nonwoven materials, for example, “Lutrasil”.EFFECT: invention provides higher efficiency of noise reduction.3 cl, 2 dwg

ethod to wash greasy wool, method to separate lanolin from said greasy wool, wool and lanolin obtainable by these methods // 2606788
FIELD: consumer goods industry.SUBSTANCE: invention relates to light industry. Method to wash wool containing lanolin and impurities, comprises providing a volume of an aqueous liquid at a temperature below melting temperature of lanolin, soaking wool in said volume of liquid, creating air bubbles in volume of liquid by injecting liquid containing air bubbles into volume using an injection nozzle, and allowing air bubbles to pass through wool to attach impurities, and removing wool from said volume.EFFECT: invention enables to obtain wool without "stable" odour.9 cl, 2 dwg, 2 ex

Fibre precursor for carbon fibres, carbon fibre and method of producing carbon fibre // 2605973
FIELD: chemistry.SUBSTANCE: invention relates to fibre precursor for carbon fibres, carbon fibre and a method of its production. Fibre precursor of carbon fibre contains a polymer of general formula (1): (1), where Ar1 is an aryl group, expressed by any structural formulae (1)-(5), and Ar2 is an aryl group, expressed by structural formula (6) or (7), except a combination, where Ar1 is a group, expressed by structural formula (3), and Ar2 is a group, expressed by structural formula (6), and combination, where Ar1 is a group, expressed by structural formula (1), and Ar2 is a group, expressed by structural formula (6): .EFFECT: technical result is obtaining carbon fibre with excellent mechanical strength without non-fusible treatment.8 cl, 10 dwg, 1 tbl, 2 ex
ethod of composite fibrous adsorbent producing // 2604620
FIELD: manufacturing technology.SUBSTANCE: invention relates to carbonic adsorbents production. Described is method of composite fibrous adsorbent production, characterized by that initial components taken are hydrolyzed lignin and polyacrylonitrile, making their mixed at ratio of 80:20 by weight, this mixture is placed into pyrolysis reactor, performing its blowdown by nitrogen flow, after that, mixture is heated in pyrolysis reactor at rate of temperature raising of 15 deg.·min-1 until mixture temperature of 800 °C, maintaining this temperature for 0.5 hours, stopped heating and performing cooling of carbonized fibers to room temperature under nitrogen at rate of its flow of 50 cm3·min-1.EFFECT: producing adsorbent based on wood processing wastes in large quantities, having higher heat resistance and strength.1 cl

achine for stapling bast-fibre crops // 2604016
FIELD: textile and paper.SUBSTANCE: invention relates to textile industry, namely to devices for stapling bast-fibre crops, and can be used in processing bast-fibre crops in different forms. Machine for stapling bast-fibre crops containing feed conveyor 1, feed rolls 2 to supply fibre into working chamber 3 in the form of a casing with slot 4 for feeding the material into the processing zone and with output 5 for removal of chopped strands, working member 6 made in the form of a plate with at least two sharpened cutting edges arranged in the same plane at an angle to the horizon, is equipped with two working members 6 in the form of plates arranged on one line relative to each other with minimum clearance between them.EFFECT: technical result is processing bast-fibre crips in different forms, higher efficiency, reducing the cost of the fibre.1 cl, 4 dwg

Casing for textile machine spindles // 2603951
FIELD: textile.SUBSTANCE: invention relates to textile industry and concerns textile machines noise-absorbing enclosure. Casing for textile machine spindles comprises enclosure with vibration and sound-absorbing layers attached on its inner surface and installed at its spindles level on machine spindles bearing pate along their row, enclosure is made in form of housing consisting of top and side plates, rigidly fixed to spindles bearing pate, and vertically arranged detachable cover, consisting of lower horizontal plate and vertical plate with slant, wherein thickness of placed on plates vibration-absorbing layer is in 2…4 times exceeds thickness of housing and cover plates, wherein casing sound absorbing enclosure is made in form of rigid and perforated walls, between which multilayer sound absorbing element is arranged, made in form of five layers, two of them, adjacent to walls, are sound-absorbing layers from materials with different density, while three central layers are combined, wherein axial layer is made sound-absorbing, and two symmetrically located, adjacent to it layers are made from sound reflecting material with complex shape, composed of evenly distributed hollow tetrahedrons, allowing to reflect sound waves incident in all directions, each of perforated walls has following perforation parameters: holes diameter - 3÷7 mm, perforation percentage 10 %÷15 %, wherein by form holes can be of circular, triangular, square, rectangular or rhomboid shape, wherein in case of non-circular holes, maximum diameter of circle inscribed into polygon shall be considered as nominal diameter, and plates from mineral wool on basalt base of “Rockwool” type are used as sound absorbing material, or from "URSA" mineral wool, or P-75 basalt wool, or a glass wool with a glass felt, herewith the sound absorbing element over its entire surface is lined with an acoustically transparent material, for example, EZ-100 glass fabric or "poviden" type polymer.EFFECT: technical result is increase in noise reduction efficiency.3 cl, 2 dwg

Threads made from completely aromatic polyimides with high uniformity of physical and mechanical properties and method for production thereof // 2603796
FIELD: chemistry.SUBSTANCE: invention relates to chemical engineering of fibre materials and threads made of completely aromatic polyimides with high uniformity of physical and mechanical properties. Method of producing threads involves synthesis of initial polyamide acid (PAA) by polycondensation of aromatic diamines and a dianhydride of pyromellitic acid in A medium of dimethylacetamide, moulding PAA threads using a wet method with subsequent stretch drawing, flushing, combined with application of imidisation catalyst, drying, as well as a step of thermal imidisation.EFFECT: invention provides process of producing complex polyimide fibres with specific breaking load of not less than 60 cN/tex, modulus of elasticity of not less than 12,000 MPa, breaking elongation 12-15 %, heat resistance of not less than 85 %, oxygen index of not less than 55 % and coefficient of variation of mechanical properties of not more than 5 %.6 cl, 2 tbl, 6 ex

Formation of conjugated protein by electrospinning // 2603794
FIELD: technological processes.SUBSTANCE: invention relates to a method of producing fibre from polysaccharide-conjugated milk whey protein by electro-spinning, which includes steps of preparing an aqueous solution, containing polysaccharide and milk whey protein, wherein said polysaccharide is present in concentration of 0.1 g/ml to about 5.0 g/ml, application to solution of voltage from 15 to 25 kV, collection of fibre on a composite plate.EFFECT: disclosed is a method of producing polysaccharide-conjugated milk whey protein by electro-spinning.23 cl, 29 dwg, 9 tbl

ethod of solid molded bodies or films producing // 2603364
FIELD: pulp and paper industry.SUBSTANCE: invention relates to method of solid cellulose molded bodies making, in particular films, from cellulose solution by extrusion, in particular, to polymer solutions or polymer liquids forming. Method of solid cellulose molded bodies producing from cellulose solution, NMMO (N-methyl-morpholine-N-oxide) and water by this solution extrusion through one or more extrusion holes under pressure and cellulose molded bodies curing in receiving bath, wherein solution is supplied between extrusion holes and receiving bath via air gap, is characterized by, that temperature of solution in extrusion holes is less than 105 °C and difference in pressure between pressure solution immediately before extrusion and after extrusion in air gap is 8-40 bar.EFFECT: method allows to improve spinning quality.34 cl, 5 dwg, 1 tbl

Low-pill polyester fibre // 2602883
FIELD: textile.SUBSTANCE: group of inventions relates to textile industry. Fibre is based on polyester, consisting of aromatic dicarboxylic acids and aliphatic diols. Fibre contains from 0.5 to 10 wt% of inorganic particles with size from 0.5 to 5 mcm. Particles are metal salts of first and second main groups of periodic table. Salts contain chlorides, fluorides, bromides, iodides, carbonates, phosphates, nitrates, hydrocarbonates, sulphites and mixed salts thereof. Polyester is extruded and moulded to produce filaments, drawn, twisted, fixed and cut to required length. Non-dyed raw fibre needs from 200 to 700 flex abrasion tours. Fibres have strength of 25 cN/tex.EFFECT: higher quality of fibre due to low piling, which is maintained at next stages.19 cl

Device for producing nanofibres, method of producing nanofibres and structure made of nanofibres // 2600903
FIELD: nanotechnology.SUBSTANCE: device for production of nanofibres 10 comprises: device 11 for injection of spinning solution comprising current-conducting nozzle 13 for injection of stock of spinning solution for producing nanofibres; electrode 14 spaced from nozzle 13; means 101 for generating voltage between nozzle 13 and 14 electrode; means 15 for feeding air jet arranged to direct air jet between nozzle 13 and 14 electrode; and a means for collection of nanofibres. Means 101 for generating voltage generates voltage so that nozzle 13 serves as a positive terminal, and electrode 14 serves as negative terminal. Whole surface of electrode 14 facing nozzle 13 is coated with coating 17 with dielectric, open on surface.EFFECT: dielectric, open on surface, has thickness of 0 8/10 mm or more.18 cl, 9 tbl, 17 ex, 33 dwg

Textile reinforcement comprising continuous aramid yarn // 2599673
FIELD: chemistry.SUBSTANCE: invention relates to polymer textile materials of special purpose and concerns textile reinforcement, comprising a continuous aramid yarn. Yarn has a finish containing mono-or dialkyl phosphate ester or a mixture thereof. Finish is free of compounds with alkoxy groups and comprises a mono- or dialkyl phosphate ester, has formula (I), in which R1 is a branched or straight C1-C15-alkyl, R2 is H, Li, Na, K or NH4 or branched or straight C1-C15-alkyl, and M denotes Li, Na, K or NH4. Textile reinforcement can be used to produce hoses, pipes, flexible pipes, fibre-optic cables, power cables, fiber-reinforced composites and articles with ballistic resistance.EFFECT: invention provides creation of efficient technology of finishing continuous aramid yarn for production of quality textile reinforcement.15 cl, 1 dwg, 6 ex, 17 tbl

ethod of producing bast fibre // 2598834
FIELD: textile.SUBSTANCE: invention relates to primary processing of bast-fibre crops to produce short and single-type bast fibre as raw material for textile industry and can be used in processing bast-fibre crops in rolls, and in other package.EFFECT: technical result is reduction of weight ratio of chaff and foreign impurities in obtained bast fibre, high efficiency of processing and is achieved by that method of producing bast fibre, which involves feeding material into processing zone under action of air flow with creation of vibration of material therein and reduction of forces of interaction of stems, their sections, fibrous strands, breaking of structure of stems and separating chaff from fibres, separation of bast fibre and chaff in two steps, first step of which includes enrichment chaff-fibre mass due to removal of chaff, based on differences of aerodynamic properties of bast fibre and chaff at interaction with air jet, stalks of bast-fibre crops are first crushed by separation of separate portions of mass of stems, and then breakdown of structure of stems and separation of chaff from fibre by coarse and fine scutching.1 cl, 1 dwg
 
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