CN107304488B - Novel highly fluffy down-like composite filling fiber and preparation method thereof - Google Patents
Novel highly fluffy down-like composite filling fiber and preparation method thereof Download PDFInfo
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- CN107304488B CN107304488B CN201610248117.0A CN201610248117A CN107304488B CN 107304488 B CN107304488 B CN 107304488B CN 201610248117 A CN201610248117 A CN 201610248117A CN 107304488 B CN107304488 B CN 107304488B
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/32—Side-by-side structure; Spinnerette packs therefor
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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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Abstract
A highly fluffy novel down-like composite filling fiber and a preparation method thereof, the composite filling fiber comprises 30-70% of terylene (PET) and 70-30% of polytrimethylene terephthalate (PTT) according to weight percentage, after the two groups of raw materials are respectively crystallized, dried, melt and extruded and spun by a spinning box, and simultaneously feeding the raw fibers into a high-capacity double-channel composite spinning device to be compounded into tows with parallel cross sections, carrying out spinning, outer ring blowing cooling, central oiling and winding processes on the tows to prepare a composite filling fiber raw fiber falling barrel, carrying out bundling, splitting and grating splitting, guiding wires by a yarn guiding machine, drawing I and II, atomizing and oiling, drawing III, heating by a steam heating box, double-sided oiling, tension heat setting, tension control, cooling oiling, multi-section traction, steam atomization and traction cutting processes on the raw fibers after balancing for 8-20 hours to obtain the high-fluffy composite filling fibers, and feeding the high-fluffy composite filling fibers into finished product packaging.
Description
Technical Field
The invention relates to a preparation method of fiber, in particular to novel highly fluffy down-like composite filling fiber and a preparation method thereof, belonging to the technical field of chemical fiber engineering.
Background
At present, two methods for producing filling fibers are mainly used in the market, one is a method for producing superfine denier fibers, and the other is a method for producing hollow fibers. The production method of the superfine denier fiber usually adopts methods such as an ultra-drawing method, a composite spinning stripping method, a sea island method, a high-speed superfine filament spinning method, jet spinning and the like, and no matter which method, the spinning holes of a fine denier spinneret plate are too thin, so that overpressure is easily caused, and the product quality is unstable; the production method of hollow fiber mainly includes two kinds, one is a chemical method, i.e. adding chemical reagent in the production, removing in the post-treatment after fiber forming to form hollow fiber, and the other is a physical forming method, i.e. producing through a hollow fiber spinneret plate. Tests prove that the hollow filling fiber produced by adopting the physical molding method has the advantages of good spinnability, low density, good heat retention and good fluffiness. But because the number of the holes of the hollow spinneret plate is small, the yield is low, and the production cost is higher.
At present, elastic fiber (T-400 fiber) products developed by PET/PTT composite pre-oriented yarns exist in the market, but the elasticity of the PET/PTT composite fibers is difficult to embody before stretching and heat setting, so the composite elastic fibers developed by the method are difficult to embody the characteristics of the PET/PTT composite fibers, and the elasticity and the fluffiness are difficult to give full play.
Disclosure of Invention
In order to solve the technical problem that the elasticity and the fluffiness of elastic fibers developed by PET/PTT composite pre-oriented yarns are difficult to exert, the invention discloses a novel highly fluffy down-like composite filling fiber and a preparation method thereof.
The technical scheme adopted by the invention is as follows: a highly fluffy novel down-like composite filling fiber and a preparation method thereof, the composite filling fiber comprises 30-70% of terylene (PET) and 70-30% of polytrimethylene terephthalate (PTT) according to weight percentage, after the two groups of raw materials are respectively crystallized, dried, melt and extruded and spun by a spinning box, and simultaneously feeding the raw fibers into a high-capacity double-channel composite spinning device to be compounded into tows with parallel cross sections, carrying out spinning, outer ring blowing cooling, central oiling and winding processes on the tows to prepare a composite filling fiber raw fiber falling barrel, carrying out bundling, splitting and grating splitting, guiding wires by a yarn guiding machine, drawing I and II, atomizing and oiling, drawing III, heating by a steam heating box, double-sided oiling, tension heat setting, tension control, cooling oiling, multi-section traction, steam atomization and traction cutting processes on the raw fibers after balancing for 8-20 hours to obtain the high-fluffy composite filling fibers, and feeding the high-fluffy composite filling fibers into finished product packaging.
Physical indicators of the strands include: the water content is 22-28 +/-1.5%, the fineness is 8.6-20.5 +/-0.1 dtex, and the elongation at break is 485-680 +/-15%.
Physical indexes of the composite filling fiber include: the fineness range is 2.2-6.6 +/-0.1 dtex, the breaking strength range is more than or equal to 2.5-3.5 Cn/dtex, the elongation at break range is 45-80 +/-8%, the central value of the fiber length is +/-2 mm, the central value of the crimp number is +/-1.5/25 mm, the initial modulus is less than or equal to 30Cn/dtex, and the crimp elasticity is more than or equal to 90%.
The temperature of the first group of hot rollers for tension heat setting is 80-160 ℃, the temperature of the second group of hot rollers is 100-.
The invention has the beneficial effects that: the invention develops a novel filling fiber by utilizing the composite self-curling elastic characteristic generated by different molecular structures and crystallization characteristics of PET (polyester) or polytrimethylene terephthalate (PTT). The PET/PTT composite elastic fiber prepared by the process has the advantages of good elasticity, high strength, high fluffiness, soft hand feeling, environmental protection and brand new product in the application field of filling fiber.
Drawings
The invention is further described below with reference to the accompanying drawings:
the attached drawing is a process flow chart of the invention.
In the drawing, A, terylene, B, polytrimethylene terephthalate, C, tows, D, protofilaments, 1, crystallization drying, 2, melt extrusion, 3, spinning manifold spinning, 4, high-capacity double-channel composite spinning, 5, spinning, 6, circular blowing cooling, 7, oiling, 8, winding, D9, protofilament falling barrel, 10, protofilament balance, 11, bundling, 12, dividing, grating, dividing, 13, yarn guiding, 14, drafting I & II, 15, atomizing, oiling, 16, drafting III, 17, steam heating box heating, 18, double-sided oiling, 19, tension heat setting, 20, tension control, 21, cooling and oiling, 22, multi-section traction, 23, steam atomizing, 24, traction cutting, 25, and composite filling fiber finished product packaging.
Detailed Description
In the embodiment of figure 1, the raw materials of the novel highly fluffy down-like composite filling fiber comprise 30-70% of Polyester (PET) and 70-30% of polytrimethylene terephthalate (PTT) in percentage by weight, the two groups of raw materials are respectively subjected to crystallization drying 1, melt extrusion 2 and spinning 3 by a spinning box, and then simultaneously enter a high-capacity double-channel composite spinning 4 device to be compounded into a tow C with a parallel section, the tow C is subjected to spinning 5, outer ring blowing cooling 6, central oiling 7 and winding 8 to prepare a composite filling fiber D falling barrel 9, the precursor D is subjected to 8-20 hour balance 10 and then subjected to bundling 11, splitting and grating splitting 12, a guide wire 13 of a guide wire machine, drawing I & II14, atomizing oiling 15, drawing III16, steam heating box heating 17, double-sided oiling 18, tension heat setting 19, drawing heat setting 19, and drawing heat setting, And (3) performing the processes of tension control 20, cooling oiling 21, multi-section traction 22, steam atomization 23 and traction cutting 24 to obtain the high-fluffy composite filling fiber, and packaging the high-fluffy composite filling fiber into a finished product 25.
The water content range of the protofilament D is 22-28 +/-1.5%, the fineness range is 8.6-20.50 +/-0.1 dtex, and the elongation at break range is 485-680 +/-15%.
The titer range of the composite filling fiber 25 is 2.2-6.6 +/-0.1 dtex, the breaking strength range is more than or equal to 2.5-3.5 Cn/dtex, the elongation at break range is 45-80 +/-8%, the central value of the fiber length is +/-2 mm, the central value of the crimp number is +/-1.5/25 mm, the initial modulus is less than or equal to 30Cn/dtex, and the crimp elasticity is more than or equal to 90%.
The temperature of the first group of hot rollers for tension heat setting 19 is 80-160 ℃, the temperature of the second group of hot rollers is 100-.
Example 1: production of 2.2dtex × 88mm filled fiber:
firstly, 8.5dtex composite precursor D is prepared, the cross section is parallel, the water content range is 26.5 percent, the fineness range is 8.5 +/-0.2 dtex, and the elongation at break range is 465 and 495 percent. Post-drawing treatment of the precursor D: the protofilament D is treated by atomizing and oiling 15 before drawing III16 after passing through a cluster 11, a dividing grate and a dividing wire 12, a guide wire 13 of a yarn guide machine, an oil bath, drawing I & II14, the protofilament D is treated by low-temperature homogenizing oiling agent solidification after passing through a drawing III16 roller, the treated protofilament D enters a steam heating box to be heated 17 and then is treated by double-sided oiling 18 on an oiling device before tense thermoforming 19, the protofilament D after double-sided oiling 18 is treated by steam heating oiling agent solidification and protofilament D orientation heating shaping after passing through a tense thermoforming 19 roller, the protofilament D after orientation shaping and oiling solidification is cooled and oiled 21 through a cooling oiling device between a tension control 20 and a multi-section traction 22 (the process is that the protofilament D is sprayed into a cooling oiling agent to be oiled and solidified by utilizing a high-temperature state just coming out of the tense thermoforming machine of the protofilament D), the protofilament D is atomized by a steam atomizing device 23 arranged between, and after atomization treatment, the fiber is sent to a traction cutter 24 and then sent to a packaging machine for packaging, and a 2.2dtex multiplied by 88mm filling fiber finished product is obtained.
The tension heat setting 19 process parameters are as follows: the temperature of the first set of hot rolls was 100 deg.C, the temperature of the second set of hot rolls was 110 deg.C, the temperature of the third set of hot rolls was 125 deg.C, and the temperature of the fourth set of hot rolls was 135 deg.C.
Example 2: production of 3.6dtex 30mm filled fiber:
firstly, 12.5dtex composite precursor D is prepared, the cross section is parallel, the water content range is 27.5 percent, the fineness range is 12.5 +/-0.1 dtex, and the elongation at break range is 485 and 585 percent. Post-drawing treatment of the precursor D: the protofilament D is treated by atomizing and oiling 15 before drawing III16 after passing through a cluster 11, a dividing grate and a dividing wire 12, a guide wire 13 of a yarn guide machine, an oil bath, drawing I & II14, the protofilament D is treated by low-temperature homogenizing oiling agent solidification after passing through a drawing III16 roller, the treated protofilament D enters a steam heating box to be heated 17 and then is treated by double-sided oiling 18 on an oiling device before tense thermoforming 19, the protofilament D after double-sided oiling 18 is treated by steam heating oiling agent solidification and protofilament D orientation heating shaping after passing through a tense thermoforming 19 roller, the protofilament D after orientation shaping and oiling solidification is cooled and oiled 21 through a cooling oiling device between a tension control 20 and a multi-section traction 22 (the process is that the protofilament D is sprayed into a cooling oiling agent to be oiled and solidified by utilizing a high-temperature state just coming out of the tense thermoforming machine of the protofilament D), the protofilament D is atomized by a steam atomizing device 23 arranged between, after the atomization treatment, the fiber is sent to a traction cutting machine 24 and then sent to a packaging machine for packaging, and a 3.6dtex multiplied by 30mm composite filling fiber finished product 21 is obtained.
The tension heat setting 19 process parameters are as follows: the first set of hot rolls was 110 deg.C, the second set of hot rolls was 130 deg.C, the third set of hot rolls was 155 deg.C, and the fourth set of hot rolls was 170 deg.C.
Example 3: production of 6.6dtex 65mm filled fiber:
firstly, 20.5dtex composite raw silk is prepared, the cross section is parallel, the water content range is 25.5 percent, the titer range is 20.5 +/-0.5 dtex, and the elongation at break range is 555-685 percent. Post-drawing treatment of the precursor D: the protofilament D is treated by atomizing and oiling 15 before drawing III16 after passing through a cluster 11, a dividing grate and a dividing wire 12, a guide wire 13 of a yarn guide machine, an oil bath, drawing I & II14, the protofilament D is treated by low-temperature homogenizing oiling agent solidification after passing through a drawing III16 roller, the treated protofilament D enters a steam heating box to be heated 17 and then is treated by double-sided oiling 18 on an oiling device before tense thermoforming 19, the protofilament D after double-sided oiling 18 is treated by steam heating oiling agent solidification and protofilament D orientation heating shaping after passing through a tense thermoforming 19 roller, the protofilament D after orientation shaping and oiling solidification is cooled and oiled 21 through a cooling oiling device between a tension control 20 and a multi-section traction 22 (the process is that the protofilament D is sprayed into a cooling oiling agent to be oiled and solidified by utilizing a high-temperature state just coming out of the tense thermoforming machine of the protofilament D), the protofilament D is atomized by a steam atomizing device 23 arranged between, and after atomization treatment, the fiber is sent to a traction cutting machine 24 and then sent to a packaging machine for packaging, and a 6.6dtex multiplied by 65mm composite filling fiber finished product 21 is obtained.
The tension heat setting 19 process parameters are as follows: the first set of hot rolls was 120 deg.C, the second set of hot rolls was 130 deg.C, the third set of hot rolls was 170 deg.C, and the fourth set of hot rolls was 180 deg.C.
Claims (3)
1. A highly fluffy novel down-like composite filling fiber and a preparation method thereof are characterized in that: the raw materials of the composite filling fiber consist of 30-70 wt% of Polyester (PET) and 70-30 wt% of polytrimethylene terephthalate (PTT), after the two groups of raw materials are respectively crystallized, dried, melt extruded and spun by a spinning box, then simultaneously feeding the raw fibers into a high-capacity double-channel composite spinning device to be compounded into tows with parallel cross sections, carrying out spinning, outer ring blowing cooling, central oiling and winding processes on the tows to prepare a composite filling fiber raw fiber falling barrel, carrying out bundling, splitting and grate splitting, guiding wires by a yarn guiding machine, drawing I and II, atomizing and oiling, drawing III, heating by a steam heating box, double-sided oiling, tension heat setting, tension control, cooling oiling, multi-section traction, steam atomization and traction cutting processes on the raw fibers after balancing for 8-20 hours to obtain the high-fluffy composite filling fibers, and feeding the high-fluffy composite filling fibers into a finished product for packaging; the steam atomization is arranged between the multi-section traction and the traction cutting so as to improve the cohesion force of the tows and eliminate the fault that the tows are easy to adhere to a traction roller in the traction process to cause the shutdown of a winding roller; the water content is 22-28 +/-1.5%, the fineness is 8.6-20.5 +/-0.1 dtex, and the elongation at break is 485-680 +/-15%; the physical indexes of the composite filling fiber comprise: the fineness range is 2.2-6.6 +/-0.1 dtex, the breaking strength range is more than or equal to 2.5-3.5 Cn/dtex, the elongation at break range is 45-80 +/-8%, the central value of the fiber length is +/-2 mm, the central value of the crimp number is +/-1.5/25 mm, the initial modulus is less than or equal to 30Cn/dtex, and the crimp elasticity is more than or equal to 90%; the temperature of the first group of hot rollers for tension heat setting is 80-160 ℃, the temperature of the second group of hot rollers is 100-170 ℃, the temperature of the third group of hot rollers is 120-180 ℃, and the temperature of the fourth group of hot rollers is 140-190 ℃; the atomized oiling is arranged between the drawing I, II and III, and the fiber is extruded and homogenized by seven rollers with the drawing III temperature of 55-85 ℃ after being oiled, so that the protofilament can fully absorb the oiling agent; the double-sided oiling is to set the device before the tension heat setting machine, the fiber oiled by the process passes through the tension heat setting device with multiple rollers, and the oiling agent can be well absorbed and solidified into the fiber, so that the fiber is more fluffy, soft and smooth.
2. The novel highly fluffy down-like composite filling fiber and the preparation method thereof according to claim 1 are characterized in that: the wire dividing grate is formed by adding a wire dividing grate between the rear end of the beaming cat eye frame and the front end of the wire guide machine, and the wire dividing grate can more uniformly spread raw silk.
3. The novel highly fluffy down-like composite filling fiber and the preparation method thereof according to claim 1 are characterized in that: the tension control device is arranged at the rear end of the tension heat setting machine and controls the speed ratio between the multi-section traction roller and the last group of rollers of the tension heat setting machine, so that the heat setting effect is improved, and the product quality is stabilized.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108315830A (en) * | 2017-12-29 | 2018-07-24 | 桐昆集团股份有限公司 | A kind of production method producing rope elater using PTT and PET |
| CN108048979B (en) * | 2018-02-13 | 2023-03-14 | 盐城工业职业技术学院 | Artificial down feather production equipment based on high-voltage electrostatic puffing and heat setting principles |
| CN108866805A (en) * | 2018-08-13 | 2018-11-23 | 常熟市昌盛无纺布厂 | Feather and down |
| CN111560674B (en) * | 2020-04-24 | 2022-12-27 | 江苏欣战江纤维科技股份有限公司 | Preparation method of outdoor pre-spinning coloring regenerated ATY (atom transfer Y) fiber with high filling power |
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