CN110886033A - Stretch yarn of low modulus elastic fiber and preparation method thereof - Google Patents
Stretch yarn of low modulus elastic fiber and preparation method thereof Download PDFInfo
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- CN110886033A CN110886033A CN201911169945.5A CN201911169945A CN110886033A CN 110886033 A CN110886033 A CN 110886033A CN 201911169945 A CN201911169945 A CN 201911169945A CN 110886033 A CN110886033 A CN 110886033A
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
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- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention relates to a stretch yarn of low modulus elastic fiber and a preparation method thereof, belonging to the technical field of textile materials and chemical fibers, comprising a sheath component and a core component, wherein the sheath component is a flexible material, the core component is an elastic material, and the mass ratio of the sheath component to the core component is (20: 80) - (80: 20); the flexible material is polyamide polymer, and the elastic material is any one of polyester polymer, polyolefin polymer, diene polymer, polyurethane polymer or polyether ester polymer. The stretch yarn fabric of the low-modulus elastic fiber can be used for sports clothes and other daily clothes, has good elasticity and softness, can improve the comfort of clothes, and is bright in color.
Description
Technical Field
The invention relates to an elastic yarn of low modulus elastic fiber and a preparation method thereof, belonging to the technical field of textile materials and chemical fibers.
Background
The stretch yarn is mainly elastic and belongs to one of the textured yarns, and is characterized in that the yarn can quickly rebound after being stretched. Stretch yarn is divided into high stretch and low stretch: the high stretch yarn is mainly made of nylon and is used for elastic shirt, trousers, socks and the like, and the clothes and socks made of the high stretch yarn can be stretched freely, can be suitable for different body types and have unique style.
Spandex is currently representative, however, it has a number of deficiencies that require improvement, such as chlorine bleach concerns in afterfinish, poor set, unstable elasticity, poor finish, easy foaming, excessive elasticity, tightness of wear, and the like. Polytrimethylene terephthalate (PTT) developed by dupont is an elastic polyester fiber that can partially replace spandex, but cannot be mass-produced at present due to the cost of raw material monomers, etc. In addition, polybutylene terephthalate (PBT) and the like are also available, and the requirement for mass production has not yet been met. Polyethylene terephthalate (PET) is the polyester fiber with the highest output at present and is also the chemical fiber with the highest output, but the polyester fiber has no elasticity, so that the handfeel, the comfort degree and the like of the fabric are difficult to improve, and the PET fabric can not be independently used in occasions with higher requirements on elasticity, such as products of swimsuits and the like.
The Chinese patent application CN101851812A discloses a parallel composite elastic fiber and a manufacturing method thereof, the parallel composite elastic fiber is prepared by carrying out parallel composite spinning on polybutylene terephthalate (PBT) and polyethylene terephthalate (PET) according to the weight ratio of 70: 30-30: 70 and then carrying out false twisting, the elastic elongation of the elastic fiber is 130-220%, and the elastic recovery rate is more than 85%.
The Chinese patent application CN101718008A discloses a high-performance polyester composite elastic fiber with good dyeability, which is prepared from two polyester or copolyester components with different viscosities, and is characterized in that one of the polyester or copolyester components is cation dyeable Copolyester (CDP) or low-temperature cation dyeable copolyester (ECDP), and the composite fiber is prepared by a composite spinning process and has good crimpability, natural resilience and dyeability.
The technical scheme disclosed by the two Chinese patent applications has the following problems: the used material belongs to polyester material, and has large modulus, bad hand feeling and insufficient color flamboyance degree.
In recent years, outdoor sports are enjoyed by more and more people, and the demand for outdoor sports apparel is increasing. In the process of movement, the action amplitude of the limbs is large, so that in order to improve the comfort of the clothes in the movement process, the sports clothes need to have good elasticity and flexibility, and the tightness and the rigidity of the clothes are avoided. Besides the knitting method adopted in weaving, the textile material is also required to have good elasticity and softness; heretofore, there has been no stretch yarn of low modulus elastic fiber having both elasticity and flexibility.
Therefore, the technical problem to be solved by the technical field is to provide the stretch yarn of the low-modulus elastic fiber which has small modulus, good hand feeling, bright color, good elasticity and good softness, and the preparation method thereof.
Disclosure of Invention
One of the purposes of the invention is to provide the stretch yarn of the elastic fiber with small modulus, good hand feeling, bright color, better elasticity and good softness.
The above object of the present invention is achieved by the following technical solutions:
a stretch yarn of a low modulus elastic fiber, characterized in that: including skin component and core component, the skin component is flexible material, the core component is elastic material, the mass ratio between skin component and the core component is 20: 80-80: 20; the flexible material is a polyamide polymer, and the elastic material is any one of a polyester polymer, a polyolefin polymer, a diene polymer, a polyurethane polymer or a polyether ester polymer.
Preferably, the mass ratio between the sheath component and the core component is 20: 80-40: 60.
preferably, the flexible material is polyamide 6.
Preferably, the polyester polymer is polytrimethylene terephthalate or polybutylene terephthalate.
Preferably, the polyolefin polymer is polypropylene, polyethylene or an octene ethylene copolymer.
Preferably, the diene polymer is vulcanized polyisoprene.
Another object of the present invention is to provide a method for preparing the stretch yarn of the low modulus elastic fiber.
The above object of the present invention is achieved by the following technical solutions:
a preparation method of stretch yarn of low modulus elastic fiber comprises the following steps:
(1) melt extrusion: the skin component polymer slices and the core component polymer slices enter respective screw extruders for melt extrusion to respectively obtain a skin component polymer melt and a core component polymer melt;
(2) and (3) composite molding: metering the skin component polymer melt and the core component polymer melt obtained in the step (1), and then respectively and simultaneously feeding the measured skin component polymer melt and the core component polymer melt into a composite spinning assembly, compounding the skin component polymer melt and the core component polymer melt into a melt trickle with a skin-core cross section in the composite spinning assembly, and extruding the melt trickle from a spinneret plate to obtain a melt trickle;
(3) cooling and solidifying: cooling and solidifying the melt trickle in the step (2) by cross air blow under the traction of spinning tension to obtain solidified fiber;
(4) oiling and bundling: oiling and bundling the cured fibers obtained in the step (3) through an oil nozzle, and combining the fibers into tows;
(5) and (3) winding the POY into a bobbin: the tows obtained in the step (4) pass through a godet and a networker, and then are wound to obtain a POY filament cylinder;
(6) heating, drafting and false twisting: on the texturing machine, the POY filament yarn obtained in the step (4) passes through a first roller, a twist stopper, a first hot box, a cooling plate, a false twister and a second roller respectively to generate drafting and false twisting;
(7) heat setting: after passing through the second roller in the step (6), the POY filaments enter a second hot box and a third roller to be subjected to heat setting;
(8) winding the DTY into a bobbin: and (5) winding the filament bundle subjected to heat setting in the step (7) through a filament detector, a corner filament guide and an oil tanker to obtain a DTY filament tube.
Preferably, in the step (1), the skin component polymer chip is dried by a drying system, and the core component polymer chip is dried by the drying system or not.
Preferably, in the step (2), the spinning temperature of the composite spinning assembly is 240-280 ℃; in the step (3), the cooling and solidifying wind temperature is 16-19 ℃, the humidity is 95-98%, and the wind speed is 0.4-0.6 m/s; the oiling agent used for oiling in the step (4) is a nylon oiling agent pure water emulsion with the concentration of 6-10%, the pure water conductivity is 0.4-0.6 mu s/cm, and the oiling rate is 0.6-0.7%; in the step (5), the winding speed is 2200 to 4200 m/min; in the step (6), the temperature of the first hot box is 150-180 ℃, the drafting multiple is more than 1.5 times, the breaking elongation of the stretch yarn is less than 35%, and the D/Y ratio is 1.5-1.8.
Preferably, the temperature of the second hot box is 110-160 ℃.
Preferably, in the step (8), the angular wire guide is a wire guide with a rolling bearing.
Has the advantages that:
according to the stretch yarn of the low-modulus elastic fiber, the sheath component is made of the flexible material, and the core component is made of the elastic material, so that the stretch yarn has good elasticity and good flexibility; the fabric of the stretch yarn can be used for sports clothes and other daily clothes, and the comfort of the clothes can be improved due to the good elasticity and softness; meanwhile, the skin component adopts polyamide polymers, so that the color gorgeous property of dyed clothes can be improved.
The invention is further illustrated by the following figures and detailed description of the invention, which are not meant to limit the scope of the invention.
Drawings
FIG. 1 is a cross-sectional view of the spandex of example 1 of the invention.
Name of major component
1 core component 2 sheath component
Detailed Description
Unless otherwise specified, the raw materials in the following examples of the present invention are commercially available, and the equipments are common equipments.
Example 1
FIG. 1 is a schematic cross-sectional view of the elastic yarn of the low modulus elastic fiber according to example 1 of the present invention; wherein, 1 is a core component, and 2 is a skin component; the stretch yarn of the low-modulus elastic fiber in the embodiment 1 of the invention is a bi-component composite fiber with a skin-core structure, wherein a skin component 2 is made of a flexible material, and a core component 1 is made of an elastic material; the material of the sheath component 2 adopts polyamide 6(PA6), and the material of the core component 1 adopts polytrimethylene terephthalate (PBT);
the preparation method of the stretch yarn of the low modulus elastic fiber of example 1 is as follows:
(1) drying and melt extrusion: adopts a bi-component melt composite spinning method, and the composite proportion is as follows: PA6, namely 40:60 PBT, and PA6 and PBT slices are respectively dried by respective drying systems and then enter respective screw extruders for melt extrusion to respectively obtain PA6 and PBT polymer melts;
(2) and (3) composite molding: after the PA6 and PBT polymer melts in the step (1) are accurately metered by respective melt metering pumps, the melts respectively and simultaneously enter a composite spinning assembly, and the spinning temperature of the composite spinning assembly is 262 ℃; in the composite spinning component, the bicomponent melt is compounded into a melt trickle with a cross section in a sheath-core shape, and the melt trickle is extruded from a spinneret plate to obtain the melt trickle;
(3) cooling and solidifying: cooling and solidifying the melt trickle obtained in the step (2) by cross air blow under the traction of spinning tension, wherein the air temperature is 19 ℃, the humidity is 98 percent, and the air speed is 0.6m/s, so as to obtain solidified fiber;
(4) oiling and bundling: oiling the cured fiber obtained in the step (3) through an oiling nozzle, bundling and merging into a tow, wherein the oiling agent is 6% of nylon oiling agent pure water emulsion, the pure water conductivity is between 0.4 mu s/cm, and the oiling rate is 0.6%;
(5) and (3) winding the POY into a bobbin: winding the tows prepared in the step (4) through a godet and a networker at a winding speed of 3200m/min to obtain a POY (pre-oriented yarn) filament tube;
(6) heating, drafting and false twisting: after a POY (pre-oriented yarn) filament tube is obtained, the POY filament tube enters a post-spinning texturing process, on a texturing machine, the POY filament respectively passes through a first roller, a twist stop device, a first hot box, a cooling plate, a false twister and a second roller, and drafting and false twisting are simultaneously generated in the process, the temperature of the first hot box is 150 ℃, the drafting multiple is 1.62 times, the breaking elongation of the elastic yarn is less than 30 percent, and the D/Y ratio is 1.7;
(7) heat setting: the POY filaments in the step (6) pass through a second roller and then enter a second hot box and a third roller, and heat setting is simultaneously generated in the process, and the working procedure is characterized in that the second hot box is additionally arranged, and the temperature of the second hot box is 140 ℃;
(8) winding the DTY into a bobbin: and (4) winding the filament bundle subjected to heat setting in the step (7) through a filament detector, a corner filament guide and an oil tanker, wherein the corner filament guide adopts a filament guide with a rolling bearing, and finally obtaining a DTY (draw false twist textured yarn) filament tube.
Example 2
The preparation method of the stretch yarn of the low modulus elastic fiber of example 2 is as follows:
(1) drying and melt extrusion: adopts a bi-component melt composite spinning method, and the composite proportion is as follows: PA6, namely 20:80 PBT, and respectively passing the PA6 and PBT slices through respective drying systems, drying the slices to reach the standard, and then feeding the slices into respective screw extruders for melt extrusion to respectively obtain PA6 and PBT polymer melts;
(2) and (3) composite molding: after the PA6 and PBT polymer melts in the step (1) are accurately metered by respective melt metering pumps, the melts respectively and simultaneously enter a composite spinning assembly, and the spinning temperature of the composite spinning assembly is 262 ℃; in the composite spinning component, the bicomponent melt is compounded into a melt trickle with a cross section in a sheath-core shape, and the melt trickle is extruded from a spinneret plate to obtain the melt trickle;
(3) cooling and solidifying: cooling and solidifying the melt trickle obtained in the step (2) by cross air blow under the traction of spinning tension, wherein the air temperature is 17 ℃, the humidity is 97% and the air speed is 0.5m/s, so as to obtain solidified fiber;
(4) oiling and bundling: oiling the cured fiber obtained in the step (3) by an oiling nozzle, bundling, and combining into a tow, wherein the oiling agent is a 10% nylon oiling agent pure water emulsion, the pure water conductivity is between 0.6 mu s/cm, and the oiling rate is 0.6%;
(5) and (3) winding the POY into a bobbin: winding the tows prepared in the step (4) by a godet and a networker at the winding speed of 2200m/min to obtain a POY (pre-oriented yarn) filament tube;
(6) heating, drafting and false twisting: after a POY (pre-oriented yarn) filament tube is obtained, the POY filament tube enters a post-spinning texturing process, on a texturing machine, the POY filament respectively passes through a first roller, a twist stop device, a first hot box, a cooling plate, a false twister and a second roller, and drafting and false twisting are simultaneously generated in the process, the temperature of the first hot box is 180 ℃, the drafting multiple is 1.62 times, the breaking elongation of the elastic yarn is less than 30 percent, and the D/Y ratio is 1.7;
(7) heat setting: the POY filaments in the step (6) pass through a second roller and then enter a second hot box and a third roller, and heat setting is simultaneously generated in the process, and the working procedure is characterized in that the second hot box is additionally arranged, and the temperature of the second hot box is 140 ℃;
(8) winding the DTY into a bobbin: and (4) winding the filament bundle subjected to heat setting in the step (7) through a filament detector, a corner filament guide and an oil tanker, wherein the corner filament guide adopts a filament guide with a rolling bearing, and finally obtaining a DTY (draw false twist textured yarn) filament tube.
Example 3
The skin component material is polyamide 6(PA6), and the core component material is polypropylene (PP).
The preparation method of the stretch yarn of the low modulus elastic fiber of example 3 is as follows:
(1) drying and melt extrusion: adopting a bi-component melt composite spinning method, wherein the composite ratio of PA6 to PP is 30:70, the PA6 slices are dried to reach the standard, the PP slices do not need to be dried, and then the PP slices enter respective screw extruders for melt extrusion to respectively obtain PA6 and PP polymer melts;
(2) and (3) composite molding: after the PA6 and PP polymer melts in the step (1) are accurately metered by respective melt metering pumps, the melts respectively and simultaneously enter a composite spinning assembly, and the spinning temperature of the composite spinning assembly is 258 ℃; compounding the bicomponent melt in the composite spinning component into a melt trickle with a cross section in a sheath-core shape, and extruding the melt trickle from a spinneret plate to obtain the melt trickle;
(3) cooling and solidifying: cooling and solidifying the melt trickle obtained in the step (2) by cross air blow under the traction of spinning tension, wherein the air temperature is 16 ℃, the humidity is 95% and the air speed is 0.4m/s, so as to obtain solidified fiber;
(4) oiling and bundling: oiling the cured fiber obtained in the step (3) by an oiling nozzle, bundling, and combining into a tow, wherein the oiling agent is 8% of nylon oiling agent pure water emulsion, the pure water conductivity is between 0.5 mu s/cm, and the oiling rate is 0.7%;
(5) and (3) winding the POY into a bobbin: the tows prepared in the step (4) pass through a godet and a networker, and then are wound at the winding speed of 4200m/min to obtain a POY filament cylinder;
(6) heating, drafting and false twisting: after a POY (pre-oriented yarn) filament tube is obtained, the POY filament tube enters a post-spinning texturing process, on a texturing machine, the POY filament respectively passes through a first roller, a twist stop device, a first hot box, a cooling plate, a false twister and a second roller, and drafting and false twisting are simultaneously generated in the process, the temperature of the first hot box is 165 ℃, the drafting multiple is 1.65 times, the breaking elongation of the elastic yarn is less than 30 percent, and the D/Y ratio is 1.7;
(7) heat setting: the POY filaments in the step (6) pass through a second roller and then enter a second hot box and a third roller, and heat setting is simultaneously generated in the process, and the working procedure is characterized in that the second hot box is additionally arranged, and the temperature of the second hot box is 130 ℃;
(8) winding the DTY into a bobbin: and (4) winding the filament bundle subjected to heat setting in the step (7) through a filament detector, a corner filament guide and an oil tanker, wherein the corner filament guide adopts a filament guide with a rolling bearing, and finally obtaining the DTY filament tube.
Example 4
The preparation method of the stretch yarn of the low modulus elastic fiber of example 3 is as follows:
(1) drying and melt extrusion: adopting a bi-component melt composite spinning method, wherein the composite ratio of PA6 to PP is 80:20, the PA6 slices are dried to reach the standard, the PP slices do not need to be dried, and then the PP slices enter respective screw extruders for melt extrusion to respectively obtain PA6 and PP polymer melts;
(2) and (3) composite molding: after the PA6 and PP polymer melts in the step (1) are accurately metered by respective melt metering pumps, the melts respectively and simultaneously enter a composite spinning assembly, and the spinning temperature of the composite spinning assembly is 258 ℃; compounding the bicomponent melt in the composite spinning component into a melt trickle with a cross section in a sheath-core shape, and extruding the melt trickle from a spinneret plate to obtain the melt trickle;
(3) cooling and solidifying: cooling and solidifying the melt trickle obtained in the step (2) by cross air blow under the traction of spinning tension, wherein the air temperature is 16 ℃, the humidity is 95% and the air speed is 0.4m/s, so as to obtain solidified fiber;
(4) oiling and bundling: oiling the cured fiber obtained in the step (3) by an oiling nozzle, bundling, and combining into a tow, wherein the oiling agent is 8% of nylon oiling agent pure water emulsion, the pure water conductivity is between 0.5 mu s/cm, and the oiling rate is 0.7%;
(5) and (3) winding the POY into a bobbin: the tows prepared in the step (4) pass through a godet and a networker, and then are wound at the winding speed of 4200m/min to obtain a POY filament cylinder;
(6) heating, drafting and false twisting: after a POY (pre-oriented yarn) filament tube is obtained, the POY filament tube enters a post-spinning texturing process, on a texturing machine, the POY filament respectively passes through a first roller, a twist stop device, a first hot box, a cooling plate, a false twister and a second roller, and drafting and false twisting are simultaneously generated in the process, the temperature of the first hot box is 165 ℃, the drafting multiple is 1.65 times, the breaking elongation of the elastic yarn is less than 30 percent, and the D/Y ratio is 1.7;
(7) heat setting: the POY filaments in the step (6) pass through a second roller and then enter a second hot box and a third roller, and heat setting is simultaneously generated in the process, and the working procedure is characterized in that the second hot box is additionally arranged, and the temperature of the second hot box is 130 ℃;
(8) winding the DTY into a bobbin: and (4) winding the filament bundle subjected to heat setting in the step (7) through a filament detector, a corner filament guide and an oil tanker, wherein the corner filament guide adopts a filament guide with a rolling bearing, and finally obtaining the DTY filament tube.
Compared with the parallel composite elastic fiber disclosed in the Chinese patent application CN101851812A, the stretch yarn of the low-modulus elastic fiber has enough elasticity, but the hand feeling is greatly improved, the modulus is low, the color brightness degree is greatly improved, and the stretch yarn of the low-modulus elastic fiber has the comprehensive performance of elasticity, low modulus and color brightness degree.
The fabric of the stretch yarn of the low-modulus elastic fiber can be used for sports clothes and other daily clothes, has good elasticity and softness, and can improve the comfort of clothes; meanwhile, the skin component adopts polyamide polymers, so that the color gorgeous property of dyed clothes can be improved. At present, no similar fiber material with elasticity and softness is reported, and the invention is innovative.
Claims (10)
1. A stretch yarn of a low modulus elastic fiber, characterized in that: the leather-core composite material comprises a leather component and a core component, wherein the leather component is made of a flexible material, the core component is made of an elastic material, and the mass ratio of the leather component to the core component is (20: 80) - (80: 20); the flexible material is a polyamide polymer, and the elastic material is any one of a polyester polymer, a polyolefin polymer, a diene polymer, a polyurethane polymer or a polyether ester polymer.
2. The spandex of claim 1, wherein: the flexible material is polyamide 6, and the mass ratio of the sheath component to the core component is (20: 80) - (40: 60).
3. The spandex of claim 2, wherein: the polyester polymer is polytrimethylene terephthalate or polybutylene terephthalate.
4. The spandex of claim 2, wherein: the polyolefin polymer is polypropylene, polyethylene or an octene ethylene copolymer.
5. The spandex of claim 2, wherein: the diene polymer is a vulcanized polyisoprene.
6. A process for preparing a stretch yarn of the low modulus elastic fiber according to any one of claims 1 to 5, comprising the steps of:
(1) melt extrusion: the skin component polymer slices and the core component polymer slices enter respective screw extruders for melt extrusion to respectively obtain a skin component polymer melt and a core component polymer melt;
(2) and (3) composite molding: metering the skin component polymer melt and the core component polymer melt obtained in the step (1), and then respectively and simultaneously feeding the measured skin component polymer melt and the core component polymer melt into a composite spinning assembly, compounding the skin component polymer melt and the core component polymer melt into a melt trickle with a skin-core cross section in the composite spinning assembly, and extruding the melt trickle from a spinneret plate to obtain a melt trickle;
(3) cooling and solidifying: cooling and solidifying the melt trickle in the step (2) by cross air blow under the traction of spinning tension to obtain solidified fiber;
(4) oiling and bundling: oiling and bundling the cured fibers obtained in the step (3) through an oil nozzle, and combining the fibers into tows;
(5) and (3) winding the POY into a bobbin: the tows obtained in the step (4) pass through a godet and a networker, and then are wound to obtain a POY filament cylinder;
(6) heating, drafting and false twisting: on the texturing machine, the POY filament yarn obtained in the step (4) passes through a first roller, a twist stopper, a first hot box, a cooling plate, a false twister and a second roller respectively to generate drafting and false twisting;
(7) heat setting: after passing through the second roller in the step (6), the POY filaments enter a second hot box and a third roller to be subjected to heat setting;
(8) winding the DTY into a bobbin: and (5) winding the filament bundle subjected to heat setting in the step (7) through a filament detector, a corner filament guide and an oil tanker to obtain a DTY filament tube.
7. The method of producing a stretch yarn of low modulus elastic fiber according to claim 6, wherein: in the step (1), the skin component polymer slices are dried by a drying system, and the core component polymer slices are dried by the drying system or are not dried by the drying system.
8. The method of producing a stretch yarn of low modulus elastic fiber according to claim 7, wherein: in the step (2), the spinning temperature of the composite spinning assembly is 240-280 ℃; in the step (3), the cooling and solidifying wind temperature is 16-19 ℃, the humidity is 95-98%, and the wind speed is 0.4-0.6 m/s; the oiling agent used for oiling in the step (4) is a nylon oiling agent pure water emulsion with the concentration of 6-10%, the pure water conductivity is 0.4-0.6 mu s/cm, and the oiling rate is 0.6-0.7%; in the step (5), the winding speed is 2200 to 4200 m/min; in the step (6), the temperature of the first hot box is 150-180 ℃, the drafting multiple is more than 1.5 times, the breaking elongation of the stretch yarn is less than 35%, and the D/Y ratio is 1.5-1.8.
9. The method of producing a stretch yarn of low modulus elastic fiber according to claim 8, wherein: the temperature of the second hot box is 110-160 ℃.
10. The method of making a stretch yarn of low modulus elastic fiber according to claim 9, wherein: in the step (8), the corner thread guide adopts a thread guide with a rolling bearing.
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| CN112281254A (en) * | 2020-09-30 | 2021-01-29 | 海安启弘纺织科技有限公司 | Preparation method of novel anti-ultraviolet antistatic elastic fabric |
| CN113445149A (en) * | 2021-03-23 | 2021-09-28 | 浙江亿衡针纺科技有限公司 | Preparation process of antibacterial and deodorant socks |
| TWI758141B (en) * | 2020-03-30 | 2022-03-11 | 日商宇部愛科喜模股份有限公司 | Chargeable sheath-core structure fiber, nonwoven fabric obtained from the fiber, composite nonwoven fabric, processed nonwoven fabric, and manufacturing method of processed nonwoven fabric |
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| TWI758141B (en) * | 2020-03-30 | 2022-03-11 | 日商宇部愛科喜模股份有限公司 | Chargeable sheath-core structure fiber, nonwoven fabric obtained from the fiber, composite nonwoven fabric, processed nonwoven fabric, and manufacturing method of processed nonwoven fabric |
| US11795584B2 (en) | 2020-03-30 | 2023-10-24 | Ube Exsymo Co., Ltd. | Chargeable core/sheath-structured fiber, nonwoven fabric obtained from said fiber, composite nonwoven fabric, nonwoven fabric processed article, and method for producing nonwoven fabric processed article |
| CN111876871A (en) * | 2020-08-07 | 2020-11-03 | 浙江亚特新材料股份有限公司 | Nylon regenerated environment-friendly air-coated yarn |
| CN112281254A (en) * | 2020-09-30 | 2021-01-29 | 海安启弘纺织科技有限公司 | Preparation method of novel anti-ultraviolet antistatic elastic fabric |
| CN113445149A (en) * | 2021-03-23 | 2021-09-28 | 浙江亿衡针纺科技有限公司 | Preparation process of antibacterial and deodorant socks |
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