Device for fibrous materials production from molten thermoplastics

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

 



 

Same patents:

FIELD: food industry.

SUBSTANCE: protein produced of milk is plasticised together with a plasticiser at a temperature of 60C - 140C under mechanical stress conditions; then fibres are moulded by means of a draw die. The plasticiser is chosen from the group including a polysaccharide water solution, glycerine, ethylene glycol or these substances mixture.

EFFECT: produce fibres have significant tensile strength.

13 cl, 1 tbl, 3 dwg, 1 ex

FIELD: process engineering.

SUBSTANCE: invention relates to production of nanofibres by electrostatic process. Spinning fibre-forming electrode designed to carry polymer solution or melt in electric field for fibre forming in devices intended for fibre forming by electrostatic process from said solutions or melts. Said electrode features elongated shape and comprises two end parts arranged at carrier. Fibre-forming elements made of string or wire bar are laid between said two parts. In compliance with this invention said fibre forming electrodes are inclined to axis of spinning of said electrode.

EFFECT: no sputter of polymer solution or melt.

8 cl, 4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to production of several synthetic threads to be stretched and wound and to device to this end. Note here that synthetic threads are formed parallel with each other, cooled and tightened by extrusion of thin bundles of filaments. Note also that said threads are stretched as a bundle of threads are wound on reels. To allow identical physical conditions, threads after extrusion and before stretching are pulled off independently by separate godet wheels. This allows identical conditions of extrusion, cooling and stretching of every thread. Proposed device comprises several separate godet wheels arranged side by side and ahead of stretching device relative to one of the threads. To pull off a definite thread, said godet wheels can actuate an appropriate drive.

EFFECT: higher efficiency.

12 cl, 4 dwg

FIELD: chemistry.

SUBSTANCE: water composition contains in wt % 15-40 solution of interpolymeric complex, 50-80 aqueous solution of thickening agent (concentration 8 - 14%) and acidity regulator 2H HCl to pH=2 - 4. Interpolymeric complex is obtained by mixing 1% solution of polyacrylacid and 10% solution of polyvinyl alcohol with component ratio 1:1. As thickening agent, applied is polyvinyl alcohol or polyethylenoxide. Viscosity of composition constitutes from 0.5 to 0.9 Pas.

EFFECT: application of claimed spinning composition makes it possible to obtain fibres with diameter 200 - 400 nm with high indicators of hygroscopicity and steam-permeabilityat quite fast rate.

1 tbl, 3 ex

FIELD: process engineering.

SUBSTANCE: invention relates to production of strands of composite material by combining continuous glass fibers with continuous fibers of organic high-shrinkage material used as reinforcing material. Thermoplastic fibers, stretched and heated to softening point, are thrown on revolving drum 17 at the rate exceeding operating rpm of said drum. Web 10 of said thermoplastic fibers are mixed on drum surface with glass fiber bundle or web 2 to make composite material strand. Said drum 17 has multiple holes and element 19 dividing drum inside into, at least, two compartments, one with rarefaction to keep thermoplastic fibers in initial crimp state and another one with increased pressure to separated web from drum surface. Produced strand features uniform distribution of fibers and stable properties.

EFFECT: composite material with liner glass fibers and crimped thermoplastic fibers.

8 cl, 2 dwg

FIELD: polymer chemistry.

SUBSTANCE: invention refers to the devices for thread cooling during formation of thermoplastic materials for manufacturing of monofiber thread of fleece or fiber out of polymer materials, i.e. polypropylene. The device includes tank (1) made with possibility of running water supply and elements (2) of thread direction with cuts (3) for thread placements. The elements (2) of thread direction are made of elastic hygroscopic material and are established with possibility of filling the material with water from the tank (1) for thread cooling. The cuts (3) for thread placement are made as cuts in elastic hygroscopic material.

EFFECT: decrease of defects due to reduced probability of thread tearing during cooling with decreased size of cooling unit.

6 cl, 2 dwg

FIELD: machine-building industry.

SUBSTANCE: device comprises a shaping device, treatment device and pick-up device which are stacked one above the other making a number of positions for one or several filaments production on each of the devices along longitudinal side of the machine. Besides, the platform of provided for process positions servicing. It is located along longitudinal side of the machine at the level between treatment device and pick-up device so that all necessary filament charging operations or device service operations could be done.

EFFECT: improved maintainability of device and reduced number of man-hours.

10 cl, 5 dwg

FIELD: textile, paper.

SUBSTANCE: method for fibrous material production consists in short-term treatment of polystyrene or its wastes in reactor with air or steam and air mixture with steam content of 50% vol. at the temperature of 90-120C, pressure of 3 MPa for 30 seconds.

EFFECT: simple, efficient and ecologically pure method is developed for production of fibrous material from polystyrene or its wastes with high yield and good sorption properties.

9 ex, 1 tbl

FIELD: machine building.

SUBSTANCE: line consists of extruder, of unit of first broach, of device for thread cooling, of thread directing elements, of unit of second broach and of cut-off mechanism. Also, the line consists of a directing support element. The cut-off mechanism is positioned behind the support element. The thread cooling device is installed between the unit of the first and the second broach. Thread is laced-up S-like into upper and lower rollers in the first unit of broach. The upper roller is driven. The elements of thread direction in the device of thread cooling transfer thread in linear motion through the unit of the second broach and the directing support element to the cut-off mechanism.

EFFECT: arrangement of compact lines of high efficiency for fabrication of qualitative fibre.

12 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: installation is designed for production of fibres out of thermo-plastic by means of supplying polymer melt and/or mixtures of polymers inside heated rotating fiberisator, in forming and simultaneous pulling fibres from jets of melt. The installation consists of an extruder, fiberisator, transporter for fibre collection, system for control and adjustment of temperature in the fiberisator; the system includes an optical pyrometre, power source and inductor. Notably, the rotating vertically installed fiberisator heated from the inductor is made in form of a cylinder with internal surface formed with a truncated cone, where angle between a shaft axis and an internal wall of the fiberisator is not less 30 and not more 35, and with a lower truncated cone of the fiberisator where angle between a vertical axis of the fiberisator and cone generatrix is 45-60. In a bottom part of the fiberisator and along circumference there are made openings; melt of thermo-plastic material flows via the openings under effect of centrifugal forces at fiberisator rotation. Angle of incline of secant flow of air from the opening of the inductor relative to vertical axis of the fiberisator is not less 10 to facilitate air flow directing formed fibre to a side opposite to the fiberisator. Diametre of produced fibre is adjusted by velocity of rotation and temperature of fiberisator walls, while output is determined with diametre and number of the openings in the fiberisator.

EFFECT: upgraded quality and physical-mechanical properties of produced fibre and reduced losses of source raw material due to destruction.

4 cl, 3 dwg, 1 tbl

FIELD: production of complex chemical filaments.

SUBSTANCE: method involves producing by known method of filament with linear density of 0.05-0.17 tex by wet or dry-wet forming and winding onto winder with winding being combined with twisting operation; after forming and twisting processes, unwinding filaments from winder and joining into yarn with following stretching, finishing, drying and winding onto bobbin. Yarn may include from 5 to 30 filaments with linear density of 5-200 tex. Each of filaments from which yarn is composed is preliminarily stretched during forming procedure. Method allows complex chemical filaments with lower linear density to be produced.

EFFECT: stabilized process for manufacture of thin chemical filaments with reduced linear density and improved quality of filaments.

4 cl, 2 dwg, 5 ex

FIELD: production of synthetic materials from thermoplastic substances and mixtures thereof, including high-quality commercial raw material and various kinds of municipal and industrial wastes of thermoplastic materials.

SUBSTANCE: apparatus has rotating hollow reactor made in the form of hollow toroid with outer and inner shells having spherical upper parts. Such construction provides reduced heating of reactor. Spinneret is mounted inside reactor on its shaft. Fibrous materials produced by means of apparatus may be used for manufacture of sorbents for catching of oil or oil products from water.

EFFECT: simplified construction, enhanced reliability in operation, reduced heat losses and improved quality of filaments.

16 cl, 4 dwg

FIELD: production of synthetic materials from thermoplastic substances and mixtures thereof, including high-quality industrial wastes, and also various kinds of domestic and industrial thermoplastic material wastes, in particular, may be used for producing of sorbents for catching of petroleum and petroleum products from water.

SUBSTANCE: apparatus has plate with detachable cover equipped with central opening where slider bearing for reactor shaft is mounted, inlet branch pipes adapted for feeding of melt into reactor and mounted within detachable cover, and rotating hollow reactor provided with spinneret and made in the form of truncated cone whose open part, that is, diverging cone and truncated cone of reactor are continuously joined to one another. Cylindrical rods having diameter D are serving as spinneret and spaced apart by equal gap L from each other to thereby allow separation of melt film into equal filaments of substantially equal cross-section Di. Heater is made in the form of truncated cone and arranged coaxially to reactor in spaced relation thereto. Also, rear side of heater is protected by heat-insulating sleeve of refractory ceramics to facilitate maintaining of working temperature mode within reactor, provide predetermined temperature of melt film and substantially eliminate destruction thereof to thereby increase quality of resultant filament.

EFFECT: simplified construction, enhanced reliability in operation, improved quality of filaments and increased efficiency of reactor.

9 cl, 5 dwg

FIELD: textile industry, in particular, methods for producing of composite thread containing intermixed continuous glass filaments and discontinuous thermoplastic filaments.

SUBSTANCE: method involves dividing continuous glass filaments delivered from spinneret into number of tapes; dividing continuous filaments of thermoplastic material delivered from drawing head into number of tapes; throwing thermoplastic filaments onto glass filaments for mixing thereof so that one thermoplastic filament tape is designed for one glass filament tape; connecting mixed filaments into single composite thread. Apparatus for producing of composite thread is also described.

EFFECT: uniform distribution of two kinds of filaments in composite thread and improved quality of composite thread.

13 cl, 6 dwg

FIELD: equipment for manufacture of web of non-woven material from single thermoplastic filaments.

SUBSTANCE: apparatus has spinneret, cooling chamber, pulling unit, and unit for laying of filaments for producing of web. Two or more polymer melts may be fed to spinneret. Apparatus is further provided with device for feeding of various polymer melts so that bicomponent or multiple-component filaments are delivered through spinneret opening. Cooling chamber is divided into at least two sections where bicomponent or multiple-component filaments are brought into contact with process air at different convective heat discharge capacity.

EFFECT: increased efficiency in directed adjustment of filaments properties and, accordingly, characteristics of non-woven materials produced.

11 cl, 6 dwg

Spinning method // 2318930

FIELD: process for spinning of complex thread and products manufactured by said process.

SUBSTANCE: method for spinning of complex thread from thermoplastic material involves providing extrusion of melted material through spinneret having multiplicity of spinning openings for forming bundle from multiplicity of fibers; winding fibers for producing of thread after hardening; performing two-staged cooling of fiber bundle under spinneret, with first stage including directing gaseous cooling medium flow in first cooling zone through fiber bundle in transverse direction so that essentially full exit of cooling medium from fiber bundle is provided at side opposite to side where cooling medium is introduced, and second stage including additional cooling of fiber bundle in second cooling zone positioned under first cooling zone essentially through self-suction of gaseous cooling medium surrounding said fiber bundle.

EFFECT: increased cooling extent of formed fibers and, accordingly, improved quality of produced fibers.

14 cl, 3 tbl

FIELD: textiles, paper.

SUBSTANCE: invention relates to technology of synthesised fibres production, in particular, to manufacturing of the product similar to monofibre. The method involves exposure of the predecessor containing an assemblage of endless elementary polyolefine fibres to temperatures within the range of polyolefine melting temperature for a period of time sufficient for, at least, a partial melting of adjacent fibres. Simultaneously drawing of the predecessor is carried out up to extent of drawing equal to at least 2.8.

EFFECT: manufacturing of the product similar to monofibre which demonstrates improved drawability that makes it suitable for such a sphere of application,as, for example, fishing line.

6 cl,1 tbl, 3 ex

FIELD: machine building.

SUBSTANCE: invention is related to the field of synthetic materials production from thermoplastic substances and their mixtures, including high quality stocks of raw materials and different types of household and industrial wastes of thermoplastic materials, and may be used for production of sorbents that entrap oil and oil products from water. Device for production of fibre material comprises extruder, nozzle of melt supply with heating elements, fibre generator. Fibre generator is arranged in the form of nozzle, compressed air supply duct is tangentially fixed to its body. Fibre generator is equipped with mouthpiece, outlet opening of which is located in the same plane with outlet opening of fibre generator. Nozzle for melt supply is equipped with heating elements installed coaxially around nozzle and at the same distance from each other. Flat ribs or cylindrical rods installed in staggered order along nozzle perimeter at the same distance from each other are located inside the nozzle. In order to improve heat emission and mixing, helical rib may be installed inside the nozzle.

EFFECT: simplification of design and increase of device efficiency and reliability.

2 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: installation is designed for production of fibres out of thermo-plastic by means of supplying polymer melt and/or mixtures of polymers inside heated rotating fiberisator, in forming and simultaneous pulling fibres from jets of melt. The installation consists of an extruder, fiberisator, transporter for fibre collection, system for control and adjustment of temperature in the fiberisator; the system includes an optical pyrometre, power source and inductor. Notably, the rotating vertically installed fiberisator heated from the inductor is made in form of a cylinder with internal surface formed with a truncated cone, where angle between a shaft axis and an internal wall of the fiberisator is not less 30 and not more 35, and with a lower truncated cone of the fiberisator where angle between a vertical axis of the fiberisator and cone generatrix is 45-60. In a bottom part of the fiberisator and along circumference there are made openings; melt of thermo-plastic material flows via the openings under effect of centrifugal forces at fiberisator rotation. Angle of incline of secant flow of air from the opening of the inductor relative to vertical axis of the fiberisator is not less 10 to facilitate air flow directing formed fibre to a side opposite to the fiberisator. Diametre of produced fibre is adjusted by velocity of rotation and temperature of fiberisator walls, while output is determined with diametre and number of the openings in the fiberisator.

EFFECT: upgraded quality and physical-mechanical properties of produced fibre and reduced losses of source raw material due to destruction.

4 cl, 3 dwg, 1 tbl

FIELD: machine building.

SUBSTANCE: line consists of extruder, of unit of first broach, of device for thread cooling, of thread directing elements, of unit of second broach and of cut-off mechanism. Also, the line consists of a directing support element. The cut-off mechanism is positioned behind the support element. The thread cooling device is installed between the unit of the first and the second broach. Thread is laced-up S-like into upper and lower rollers in the first unit of broach. The upper roller is driven. The elements of thread direction in the device of thread cooling transfer thread in linear motion through the unit of the second broach and the directing support element to the cut-off mechanism.

EFFECT: arrangement of compact lines of high efficiency for fabrication of qualitative fibre.

12 cl, 8 dwg

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