Device and method of manufacturing nonwoven spun fabric of elementary fibres

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

 



 

Same patents:

FIELD: construction.

SUBSTANCE: production line of fibre from polymer mass in the process direction includes an extruder, an extrusion head for formation of a thread from polymer mass, which has a cross section of the specified shape, a thread cooling bath with cooling liquid, a withdrawal-roll set containing at least one upper roll and one lower roll with S-shaped threading, a thermal plastification chamber, the main tension set containing at least one upper roll and one lower roll with S-shaped threading between them, main thread drawing zone, a corrugating device and a cutting mechanism for thread cutting into equal pieces - fibre. The line includes an additional tension set containing at least one upper roll and one lower roll with S-shaped threading between them, which is installed after the main tension set, an additional thread drawing zone formed between the main tension set and the additional tension set, heaters for heating of the withdrawal-roll set, heaters for heating of the thermal plastification chamber, heaters for heating of the main tension set, as well as fans with outlet nozzles for removal of residual moisture from thread, which are installed in a zone between the withdrawal-roll set and the thermal plastification chamber.

EFFECT: improving strength and quality of produced fibre.

1 dwg

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: processes for producing of synthetic, in particular, high-strength, polypropylene fibers.

SUBSTANCE: method for producing of fibers having minimal thickness, strength exceeding 6 sN/decitex and elongation less than 40% involves forming cords from melt having low temperature, in particular less than 250 C; discharging said cords at relatively low feeding speed which is less than 100 m/min, and simultaneously cooling said cord using gaseous cooling medium; subjecting cords to stretching in at least three stretching stages at total stretching ratio of 4:1. At first stretching stage, cord partial stretching degree is at least 70% by total stretching degree. After termination of stretching procedure, cords are cut into polypropylene fibers. Also, apparatus for manufacture of high-strength polypropylene fibers is described. Method allows thin fibers with single filament titer less than 2 decitex to be produced.

EFFECT: increased efficiency in producing of polypropylene fibers having minimal thickness and elongation degree and maximal strength.

15 cl, 2 dwg

FIELD: manufacture of substantially endless thin threads from polymer solutions, in particular, lyocellulose textile masses.

SUBSTANCE: method involves forming textile mass flowing from at least one forming aperture or forming slot; drawing formed thread or film by means of gas flow accelerated to high speed by means of Laval nozzle, whose narrowest section is arranged downstream of textile mass exit end; delivering threads onto tape formed as non-woven material or gripped in the form of yarn and separated from solvents in settling tanks.

EFFECT: improved method and apparatus for manufacture of endless thin threads and film, which are not damaged by thermal action of gas flows used for drawing thereof.

31 cl, 4 dwg, 2 tbl, 3 ex

The invention relates to the molding of polytrimethylene in the thread, suitable for carpets

The invention relates to the textile industry, namely, to determine the quality of a moving yarn in the process of its production and processing

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.

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

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: 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

The moulder // 2132418

The invention relates to spinning shafts and particularly to spinning shafts, which are used for coagulation localnih filament yarn

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: 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: 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: 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

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

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