Complex thread forming spinneret

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

 



 

Same patents:

FIELD: textiles, paper.

SUBSTANCE: spinning tube for formation of threads of spinning mass is proposed, in the form of a melt or a solution of natural or synthetic origin, comprising an axisymmetric inner part having a duct in the longitudinal direction, for supplying a spinning mass to the top of the spinning tube, in which at least one outlet opening is made. The axisymmetric inner part is at least partially surrounded by the axisymmetric outer part, and between the inner and outer parts in the longitudinal direction an insulating chamber is formed, in which gas, preferably air, is placed in order to create an insulating gas layer. In addition, the forming device is proposed for forming threads from a spinning mass, comprising a spinneret block and a nozzle unit located at a distance from it. In the spinneret block there are several spinning tubes according to the invention, which protrude from it and turned to the nozzle unit. The nozzle unit comprises a plurality of gas nozzles corresponding to the spinning tubes, which can accelerate the gas flow passing through the corresponding gas nozzle and surrounding the monofilament. These spinning tubes are used to make spunbonded nonwoven or yarns of polymers of natural or synthetic origin and enable to obtain the thinnest threads with an average diameter of less than 1 mcm. The threads of individual spinning tubes may also be wound similarly to yarn on the coils using conventional winders.

EFFECT: improvement of the design.

16 cl, 7 dwg, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to technology of obtaining filamentous threads from paraaromatic polyamide. Optically anisotropic aramide spinning solution is filtered through filter with passing holes inside spinneret device and extruded inside spinneret device through multitude of spinning plates and air clearance with drawing and collection in water coagulation bath. Spinning solution in spinneret device is supplied through means of hydraulic resistance to spinning passing holes. Means of hydraulic resistance is located closer to spinning passing holes than filter. Means of hydraulic resistance and filter are located at a distance from each other.

EFFECT: application of invention ensures prevention of filament breaking in the process of spinning and increase of fibre strength.

12 cl, 6 dwg, 1 ex

FIELD: metallurgy.

SUBSTANCE: thread is produced from polyethylene of super-high molecular weight with characteristic viscosity of 8-40 dl/g. Note here that said thread features creep rate defined at 70C and 600 MPa equal to at most 5-10-6s-1. Complex thread produced from polyethylene of super-high molecular weight with characteristic viscosity of 8-40 dl/g containing 0.2-10 alkyl groups C1-C4 per 1000 atoms of C features creep rate defined at 70C and 600 MPa equal to at most 3-10-6s-1. Invention covers also semi-finished articles including said thread, particularly, super-strong ropes, bullet-proof modules, medical implants.

EFFECT: better thread characteristics.

14 cl, 4 dwg, 5 tbl, 28 ex

FIELD: electricity.

SUBSTANCE: invention relates to an injection nozzle for electrospinning, which includes a nozzle body and an air casing, connected with possibility of disconnection from each other, and needle-like elements connected to the lower surface of the nozzle body through injection holes in the air casing. The electrospinning device basically performs air electrospinning to inject a solution for forming fibre together with air when injecting through the needle-like elements a solution for forming fibre, and said needle-like elements protrude a sufficient length by their ends to perform error-free clean electrospinning without blowing air, if the air casing is separated.

EFFECT: optionally performing clean electrospinning or air electrospinning.

10 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: proposed device comprises extending spinnerets arranged in spinneret section and accelerating nozzles, namely Laval nozzles. Said spinnerets have forming holes wherefrom forming materials escape in the form of mono fiber. Accelerating nozzles correspond to forming holes. Accelerating nozzle cross section widens behind the narrowest cross section. Proposed device comprises also gas flows feed appliance, said gas flows surrounding mono fiber and being accelerated by accelerating nozzles. Accelerating nozzle is arranged in section accommodating gas nozzles representing at least partially a plate and funnel-like recess whereto spinneret comes out in to form gas passages. Proposed device incorporates the appliance for relative displacement of the part with gas nozzles and spinneret part to allow varying gas flow channel through section and/or varying the position of aforesaid narrowest cross section of accelerating nozzles with respect to forming holes.

EFFECT: compact sizes, simple design and fast start of forming.

16 cl, 4 dwg, 3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to technology of obtaining complex fibres from high-quality polyethylene. Method includes obtaining polyethylene solution with superhigh mole weight in solvent; formation of fibres from solution through forming plate with at least 5 spinning holes, and through air clearance, drawing out obtained liquid elementary fibres with drawing out degree in liquid medium DR liquid.; cooling of liquid elementary fibres with obtaining gel-like elementary fibres containing solvent; extraction of solvent and performing drawing out of elementary fibres in at least one stage before, during and/or after extraction of solvent with degree of drawing out DRsolid., equal to at least 4. Each spinning hole includes zone of narrowing characterised by specific size and further zone characterised by diametre Dn and length Ln with value Ln/Dn within the range from 0 to 25, with obtaining as a result degree of drawing out DRliquid=DRs.hDRa.c., equal to at least 150, where DRs.h. - degree of drawing out in spinning holes, exceeding 1, and DRa.c. - degree of drawing out in air clearance, equal to at least 1. From obtained complex fibres from high-quality polyethylene semi-finished products or products of consumptive use, including ropes and bulletproof composites, are produced.

EFFECT: elaboration of efficient technology of obtaining complex fibres from high-quality polyethylene.

30 cl, 4 dwg, 5 tbl, 29 ex

The invention relates to the field of nozzles for forming fibres and fibres from solutions, in particular to pilgeram of material based on zirconium

The invention relates to the field of nozzles for forming fibres and fibres from solutions, in particular, to pilgeram of material based on zirconium
The invention relates to the production of porous polymer films and can be used for filtering, analysis and purification of different environments in microbiological, biochemical and other industries

The invention relates to a method for receiving the filaments from an optically anisotropic spinning solution in which the spinning solution ekstragiruyut through spinning holes, grouped in at least one spinning section, and the extrudates sequentially pass through the inert gas and coagulation bath, and the ratio of the distance between the spinning holes to the width of the spinning section is greater than 0.15 and less than 0.7 and the width of the spinning section is less than 5 mm

FIELD: chemistry.

SUBSTANCE: invention relates to technology of obtaining complex fibres from high-quality polyethylene. Method includes obtaining polyethylene solution with superhigh mole weight in solvent; formation of fibres from solution through forming plate with at least 5 spinning holes, and through air clearance, drawing out obtained liquid elementary fibres with drawing out degree in liquid medium DR liquid.; cooling of liquid elementary fibres with obtaining gel-like elementary fibres containing solvent; extraction of solvent and performing drawing out of elementary fibres in at least one stage before, during and/or after extraction of solvent with degree of drawing out DRsolid., equal to at least 4. Each spinning hole includes zone of narrowing characterised by specific size and further zone characterised by diametre Dn and length Ln with value Ln/Dn within the range from 0 to 25, with obtaining as a result degree of drawing out DRliquid=DRs.hDRa.c., equal to at least 150, where DRs.h. - degree of drawing out in spinning holes, exceeding 1, and DRa.c. - degree of drawing out in air clearance, equal to at least 1. From obtained complex fibres from high-quality polyethylene semi-finished products or products of consumptive use, including ropes and bulletproof composites, are produced.

EFFECT: elaboration of efficient technology of obtaining complex fibres from high-quality polyethylene.

30 cl, 4 dwg, 5 tbl, 29 ex

FIELD: process engineering.

SUBSTANCE: proposed device comprises extending spinnerets arranged in spinneret section and accelerating nozzles, namely Laval nozzles. Said spinnerets have forming holes wherefrom forming materials escape in the form of mono fiber. Accelerating nozzles correspond to forming holes. Accelerating nozzle cross section widens behind the narrowest cross section. Proposed device comprises also gas flows feed appliance, said gas flows surrounding mono fiber and being accelerated by accelerating nozzles. Accelerating nozzle is arranged in section accommodating gas nozzles representing at least partially a plate and funnel-like recess whereto spinneret comes out in to form gas passages. Proposed device incorporates the appliance for relative displacement of the part with gas nozzles and spinneret part to allow varying gas flow channel through section and/or varying the position of aforesaid narrowest cross section of accelerating nozzles with respect to forming holes.

EFFECT: compact sizes, simple design and fast start of forming.

16 cl, 4 dwg, 3 tbl

FIELD: electricity.

SUBSTANCE: invention relates to an injection nozzle for electrospinning, which includes a nozzle body and an air casing, connected with possibility of disconnection from each other, and needle-like elements connected to the lower surface of the nozzle body through injection holes in the air casing. The electrospinning device basically performs air electrospinning to inject a solution for forming fibre together with air when injecting through the needle-like elements a solution for forming fibre, and said needle-like elements protrude a sufficient length by their ends to perform error-free clean electrospinning without blowing air, if the air casing is separated.

EFFECT: optionally performing clean electrospinning or air electrospinning.

10 cl, 5 dwg

FIELD: metallurgy.

SUBSTANCE: thread is produced from polyethylene of super-high molecular weight with characteristic viscosity of 8-40 dl/g. Note here that said thread features creep rate defined at 70C and 600 MPa equal to at most 5-10-6s-1. Complex thread produced from polyethylene of super-high molecular weight with characteristic viscosity of 8-40 dl/g containing 0.2-10 alkyl groups C1-C4 per 1000 atoms of C features creep rate defined at 70C and 600 MPa equal to at most 3-10-6s-1. Invention covers also semi-finished articles including said thread, particularly, super-strong ropes, bullet-proof modules, medical implants.

EFFECT: better thread characteristics.

14 cl, 4 dwg, 5 tbl, 28 ex

FIELD: chemistry.

SUBSTANCE: invention relates to technology of obtaining filamentous threads from paraaromatic polyamide. Optically anisotropic aramide spinning solution is filtered through filter with passing holes inside spinneret device and extruded inside spinneret device through multitude of spinning plates and air clearance with drawing and collection in water coagulation bath. Spinning solution in spinneret device is supplied through means of hydraulic resistance to spinning passing holes. Means of hydraulic resistance is located closer to spinning passing holes than filter. Means of hydraulic resistance and filter are located at a distance from each other.

EFFECT: application of invention ensures prevention of filament breaking in the process of spinning and increase of fibre strength.

12 cl, 6 dwg, 1 ex

FIELD: textiles, paper.

SUBSTANCE: spinning tube for formation of threads of spinning mass is proposed, in the form of a melt or a solution of natural or synthetic origin, comprising an axisymmetric inner part having a duct in the longitudinal direction, for supplying a spinning mass to the top of the spinning tube, in which at least one outlet opening is made. The axisymmetric inner part is at least partially surrounded by the axisymmetric outer part, and between the inner and outer parts in the longitudinal direction an insulating chamber is formed, in which gas, preferably air, is placed in order to create an insulating gas layer. In addition, the forming device is proposed for forming threads from a spinning mass, comprising a spinneret block and a nozzle unit located at a distance from it. In the spinneret block there are several spinning tubes according to the invention, which protrude from it and turned to the nozzle unit. The nozzle unit comprises a plurality of gas nozzles corresponding to the spinning tubes, which can accelerate the gas flow passing through the corresponding gas nozzle and surrounding the monofilament. These spinning tubes are used to make spunbonded nonwoven or yarns of polymers of natural or synthetic origin and enable to obtain the thinnest threads with an average diameter of less than 1 mcm. The threads of individual spinning tubes may also be wound similarly to yarn on the coils using conventional winders.

EFFECT: improvement of the design.

16 cl, 7 dwg, 1 ex

Nozzle plate // 2573974

FIELD: chemistry.

SUBSTANCE: invention relates to a nozzle plate and use of the nozzle plate to produce fibres, preferably silica gel fibres.

EFFECT: invention improvement.

7 cl, 7 dwg

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

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