CN117802651A - Novel hollow filament thermal insulation yarn and manufacturing method thereof - Google Patents
Novel hollow filament thermal insulation yarn and manufacturing method thereof Download PDFInfo
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- CN117802651A CN117802651A CN202410189899.XA CN202410189899A CN117802651A CN 117802651 A CN117802651 A CN 117802651A CN 202410189899 A CN202410189899 A CN 202410189899A CN 117802651 A CN117802651 A CN 117802651A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000009413 insulation Methods 0.000 title abstract description 27
- 239000000835 fiber Substances 0.000 claims abstract description 90
- 229920000728 polyester Polymers 0.000 claims abstract description 39
- 238000009987 spinning Methods 0.000 claims abstract description 27
- 238000001035 drying Methods 0.000 claims abstract description 22
- 239000000155 melt Substances 0.000 claims abstract description 14
- 238000001125 extrusion Methods 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 13
- 230000008018 melting Effects 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims abstract description 5
- 238000007664 blowing Methods 0.000 claims abstract description 4
- 238000002425 crystallisation Methods 0.000 claims abstract description 4
- 230000008025 crystallization Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 36
- 239000004743 Polypropylene Substances 0.000 claims description 33
- -1 polyethylene terephthalate Polymers 0.000 claims description 33
- 208000012886 Vertigo Diseases 0.000 claims description 26
- 239000002994 raw material Substances 0.000 claims description 23
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 22
- 229920001155 polypropylene Polymers 0.000 claims description 22
- 229920002994 synthetic fiber Polymers 0.000 claims description 21
- 239000012209 synthetic fiber Substances 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 18
- 239000004952 Polyamide Substances 0.000 claims description 17
- 229920002647 polyamide Polymers 0.000 claims description 17
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 11
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 11
- 229920000297 Rayon Polymers 0.000 claims description 8
- 229920002972 Acrylic fiber Polymers 0.000 claims description 6
- 229920001778 nylon Polymers 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 claims description 3
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 3
- 239000004626 polylactic acid Substances 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000035699 permeability Effects 0.000 abstract description 4
- 239000004744 fabric Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 9
- 238000000578 dry spinning Methods 0.000 description 4
- 238000002074 melt spinning Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000012510 hollow fiber Substances 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention discloses a novel hollow filament warm-keeping yarn and a manufacturing method thereof, comprising the following steps: s1: slicing; s2: pre-crystallization treatment; s3: drying; s4: screw extrusion treatment after melting; s5: metering and treating a spinning pump; s6: extruding the melt assembly; s7: side blowing cooling treatment; s8: oil nozzle bundling and oiling treatment; s9: pre-network processing; s10: a first heat roller treatment; s11: a second heat roller treatment; s12: network processing; s13: and (5) winding treatment. According to the novel hollow filament thermal insulation yarn and the manufacturing method, the hollow air layer is arranged in the middle of the fiber structure of the prepared hollow filament thermal insulation yarn, so that the hollow filament thermal insulation yarn is lighter, softer and better in air permeability than common fibers, namely, has light air permeability, and meanwhile, because the air layer is arranged in the middle of hollow polyester, the hollow filament thermal insulation yarn can absorb and store air, and the thermal insulation performance of fabrics is improved, namely, the thermal insulation performance is superior.
Description
Technical Field
The invention relates to the technical field of yarn manufacturing, in particular to a novel hollow filament thermal insulation yarn and a manufacturing method thereof.
Background
Hollow filaments are one type of hollow fiber, and hollow fiber refers to chemical fiber in which a fine tubular cavity is formed in the axial direction of the fiber. The through fiber is a chemical fiber with a tubular cavity in the axial direction. Can be used for winter wear, bedding, padding and the like; the hollow fiber structure assembled into microfiltration, ultrafiltration, dialysis, gas separation, reverse osmosis, evaporation permeators and the like comprises a large amount of static air, can bring light elasticity, good moisture permeability and comfortable warm keeping effect to fabrics, is widely used in fields of thermal underwear, underclothes, sportswear, casual clothing, shirts, outdoor exercises, blankets and the like, is earliest 1965, appears in DuPont's antifouling nylon industry, utilizes the void-in-fiber dirt collection and utilizes the light reflection and refraction principles to store dirt, china starts later, and produces three-position curled hollow short fibers with 3.33dtex until 1993, and has two production lines with the yield of 12kt/a in 1997. The arrangement mode of the spinneret plate discharge holes is that the difference between the arrangement diameter of the outermost ring holes and the arrangement diameter of the innermost ring holes is less than or equal to 20mm; the difference between the arrangement diameter of the innermost ring holes and the diameter of the blowpipe is at least 12mm but less than or equal to 33mm. It is mainly characterized in that the density of the ejection holes on the spinneret plate is preferably 7-15 holes/dm < 2 >. A polyester fine denier hollow yarn excellent in dyeing property.
In summary, as shown in fig. 3, the filament yarn manufactured by the existing hollow filament processing method is generally below 20%, the short thread is 15-25%, the thermal insulation effect is low, the weight is heavy, and the two ends of the fiber are open, so that on one hand, the conduction of media such as water and steam is easy, and on the other hand, the open holes at the two ends are unfavorable for maintaining the performance of filling the media in the cavity and on the occasion of using the media requiring water repellency and the like, and therefore, the existing processing method needs to be improved.
Disclosure of Invention
The invention aims to provide a novel hollow filament thermal insulation yarn and a manufacturing method thereof, which are used for solving the problems that the filament yarn manufactured by the existing hollow filament processing method in the background technology is generally below 20%, short wires are 15-25%, thermal insulation effect is low, weight is heavy, and two ends of fibers are open, so that on one hand, the conduction of media such as water and steam is easy, and on the other hand, the opening of the two ends is not beneficial to the performance of filling the media in a cavity and the use occasion requiring the performance of water repellency and the like.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the novel hollow filament thermal yarn is characterized by comprising polyester fiber (PET) polyethylene terephthalate, polyamide fiber (PA) polyamide fiber, triocrylic fiber (PAN), polyacrylonitrile fiber and polypropylene fiber (PP) polypropylene synthetic fiber, wherein the specification of the filament synthetic fiber is 30 dxF-5000 dxF, the synthetic fiber can be mixed with fiber and animal fiber for spinning, and the yarn specification is 20-120 branch lines, the spinning method of the filament comprises three types of melt spinning, solution spinning and dry spinning, and the raw materials of the hollow filament thermal yarn comprise the following components in parts by weight: 30-40 parts of polyester fiber (PET) polyethylene terephthalate, 10-15 parts of nylon fiber (PA) polyamide fiber, 20-25 parts of tri-acrylic fiber (PAN), 40-45 parts of polyacrylonitrile fiber, 15-30 parts of polypropylene fiber (PP) polypropylene synthetic fiber, 17-19 parts of far infrared polyester fiber and 15-25 parts of viscose fiber.
The method for manufacturing the novel hollow filament thermal yarn comprises the following specific steps:
s1, slicing operation
Selecting clean and flawless raw materials, and then cutting the raw materials into uniform sheets by using external equipment, wherein the raw materials comprise, but are not limited to, polyester, polylactic acid, PE and viscose;
s2, pre-crystallization treatment
Mainly improves the softening point of the raw materials, so that the raw materials can be quickly agglomerated in the subsequent processing, namely, the drying process is prevented;
s3, drying treatment
Removing moisture in the raw material slice by using external drying equipment, and setting the drying time according to the warning condition;
s4, screw extrusion treatment after melting
Melting the polyester chips which are subjected to the process treatment by using external equipment, extruding the melt by using a screw after melting, and preparing spinning;
s5, metering treatment of spinning pump
The metering pump is utilized to automatically meter according to the preset technological parameter requirements;
s6, extrusion treatment of melt component
Spraying the metered melt through a melt assembly;
s7, side-blowing air cooling treatment
The heat released by the melt during condensation is taken away in a heat exchange mode by using cooling air with lower temperature by using a fan or other exhaust equipment;
s8, oil nozzle bundling and oiling treatment
To increase bundling of the yarn, the spun yarn is generally multifilament, making it more bundled;
s9, pre-network processing
Preprocessing heavy net, light net and no net conditions;
s10, first hot roller treatment
The first hot roller is utilized to drag the yarn, and the yarn is heated in the yarn dragging process;
s11, second hot roller treatment
Further filament drawing is carried out by utilizing a second hot roller, and the yarn is shaped in the filament drawing process;
s12, network processing
Processing heavy net, light net and no net conditions;
s13, winding treatment
And the spinning cake is rolled according to a certain speed and a certain mode, so that the spinning cake is convenient for normal use in the subsequent process.
Preferably, the S1 stage polyester feedstock is refined from petroleum and its quality needs to be assessed prior to slicing.
Preferably, the drying mode in the S3 stage is mainly completed by heating and drying, and the drying temperature is increased stepwise.
Preferably, the melting device of the S4 stage is in particular a twin-screw extruder, and thus guarantees the continuity of the yarn extrusion.
Preferably, the melt assembly of the S6 stage is embodied as a spinneret and the spinneret functions to produce profiled cross section filaments, and the melt assembly of the S6 stage is embodied as a spinneret and the spinneret functions to produce profiled cross section filaments, which are 4c shaped.
Preferably, the purpose of the S7 stage is to properly cool the yarn, and then draft and shape the yarn to form a fiber having a constant strength.
Preferably, the purpose of stage S7 also includes reducing the coefficient of friction and antistatic properties, and the coefficient of friction is embodied by the fact that the distance from the spinneret to the winder is generally large with many rollers and yarn guides, through which the effect of friction on yarn quality can be reduced.
Preferably, the S10 stage plays a key role in the quality of the finished yarn, the temperature in the yarn dragging process can be reasonably set according to the warning condition, meanwhile, the hollowness of the formed filaments is more than or equal to 30%, the number of holes of the filaments is more than 10 holes, particularly 24-36 holes, and the fineness of the filaments can be flexibly set by adjusting an extrusion die according to the requirement.
Preferably, the heavy net in the S12 stage is a heavy net which is obtained by pulling polyester yarns by hands and is difficult to break; the light net in the S12 stage is low in network fastness, namely, the polyester yarn is pulled by hands, and the pulled polyester yarn is scattered; the absence of a network in the S12 stage means that there is no network point.
Compared with the prior art, the invention has the beneficial effects that: the novel hollow filament thermal insulation yarn and the manufacturing method thereof,
the hollow filament thermal insulation yarn has the advantages that the hollow air layer is arranged in the middle of the fiber structure of the hollow filament thermal insulation yarn, so that the hollow filament thermal insulation yarn is lighter, softer and better in air permeability than common fibers, namely light and breathable performance, and meanwhile, the hollow polyester has the air layer in the middle, so that the hollow polyester can absorb and store air, the thermal insulation performance of the fabric is improved, and the hollow filament thermal insulation yarn is warmer than the common fibers, namely better in thermal insulation performance, namely superior in thermal insulation performance;
on the other hand, the hollow filament thermal insulation yarn has a porous structure, so that the skin can be ventilated, namely the hollow filament thermal insulation yarn has the performances of moisture absorption and sweat release; secondly, the hollow polyester can not deform due to washing and has good durability, and after washing for many times, the hollow polyester still keeps the original shape and excellent performance, namely has durability and washing resistance; in addition, the filament thermal-insulation yarn processed by the method has the advantages of no dust, environmental protection, low carbon, high hollowness, strong inclusion, low cost, excellent and permanent effect, wide application scene, simplicity and low process cost.
Drawings
FIG. 1 is a schematic view of a front view in cross section;
FIG. 2 is a table of yarn properties processed in accordance with the present invention;
FIG. 3 is a schematic diagram of a part of the main hollow limit manufacturers at home and abroad;
FIG. 4 is a schematic cross-sectional view of a yarn having a circular hole in its interior;
FIG. 5 is a schematic cross-sectional view of a yarn having a rectangular hole in its interior;
FIG. 6 is a graph comparing a portion of the performance parameters of the present invention with that of a prior art hollow filament.
Fig. 7 is a profiled cross-section wire drawing of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, the present invention provides a technical solution: a novel hollow filament thermal yarn and a manufacturing method thereof,
example 1
The novel hollow filament thermal yarn comprises polyester fiber (PET) polyethylene terephthalate, polyamide fiber (PA) polyamide fiber, polyacrylonitrile fiber (PAN), polypropylene fiber (PP) polypropylene synthetic fiber, wherein the specification of the filament synthetic fiber is 30 dxF-5000 dxF, the synthetic fiber can be mixed with fiber and animal fiber for spinning, and the yarn specification is 20-120 branch lines, and the spinning method of the filament comprises three steps of melt spinning, solution spinning and dry spinning, and the raw materials of the hollow filament thermal yarn comprise the following components in parts by weight: 305 parts of polyester fiber (PET) polyethylene terephthalate, 12 parts of nylon fiber (PA) polyamide fiber, 22 parts of tri-acrylic fiber (PAN), 42 parts of polyacrylonitrile fiber, 23 parts of polypropylene fiber (PP) polypropylene synthetic fiber, 18 parts of far infrared polyester fiber and 20 parts of viscose fiber.
The novel hollow filament thermal yarn can also be made of single fiber materials, such as polyester fiber (PET) polyethylene terephthalate, polyamide fiber (PA) polyamide fiber, tri-acrylic fiber (PAN), polyacrylonitrile fiber and polypropylene fiber (PP) polypropylene synthetic fiber.
The method for manufacturing the novel hollow filament thermal yarn comprises the following specific steps:
s1, slicing operation
Selecting clean and flawless raw materials, and then cutting the raw materials into uniform sheets by using external equipment, wherein the raw materials comprise, but are not limited to, polyester, polylactic acid, PE and viscose;
the S1 stage polyester feedstock is refined from petroleum and its quality needs to be assessed before slicing.
S2, pre-crystallization treatment
Mainly improves the softening point of the raw materials, so that the raw materials can be quickly agglomerated in the subsequent processing, namely, the drying process is prevented;
s3, drying treatment
Removing moisture in the raw material slice by using external drying equipment, and setting the drying time according to the warning condition;
the drying mode in the S3 stage is mainly finished by heating and drying, and the drying temperature is increased in stages.
S4, screw extrusion treatment after melting
Melting the polyester chips which are subjected to the process treatment by using external equipment, extruding the melt by using a screw after melting, and preparing spinning;
the melting equipment in the S4 stage is specifically a double-screw extruder, and the continuity of yarn extrusion is ensured.
S5, metering treatment of spinning pump
The metering pump is utilized to automatically meter according to the preset technological parameter requirements;
s6, extrusion treatment of melt component
Spraying the metered melt through a melt assembly;
the melt assembly of stage S6 is specifically a spinneret and the spinneret functions to produce profiled section filaments. The special-shaped section wire is in a 4c shape and is an inner 4c or an outer 4c shape, so that the compressive resistance and rebound ability can be effectively improved.
S7, side-blowing air cooling treatment
The heat released by the melt during condensation is taken away in a heat exchange mode by using cooling air with lower temperature by using a fan or other exhaust equipment;
the purpose of the S7 stage is to properly cool the yarn, and then draft and shape the yarn to form a fiber with a certain strength.
The purpose of the S7 stage also includes reducing the coefficient of friction and antistatic properties, and the coefficient of friction is embodied in that the distance from the spinneret to the winder is generally large with many rollers and yarn guides, through which the effect of friction on yarn quality can be reduced.
S8, oil nozzle bundling and oiling treatment
To increase bundling of the yarn, the spun yarn is generally multifilament, making it more bundled;
s9, pre-network processing
Preprocessing heavy net, light net and no net conditions;
s10, first hot roller treatment
The first hot roller is utilized to drag the yarn, and the yarn is heated in the yarn dragging process;
the S10 stage plays a key role in the quality of the finished yarn, the temperature in the yarn dragging process can be reasonably set according to the warning condition, meanwhile, the hollowness of the formed filaments is more than or equal to 30%, the number of holes of the filaments is more than 10 holes, specifically 24-36 holes, and the fineness of the filaments can be flexibly set by adjusting an extrusion die according to the requirement.
S11, second hot roller treatment
Further filament drawing is carried out by utilizing a second hot roller, and the yarn is shaped in the filament drawing process;
s12, network processing
Processing heavy net, light net and no net conditions;
s13, winding treatment
And the spinning cake is rolled according to a certain speed and a certain mode, so that the spinning cake is convenient for normal use in the subsequent process.
The heavy net in the S12 stage is the one which is pulled by hands and is difficult to be dispersed; the light net in the S12 stage is low in network fastness, namely, the polyester yarn is pulled by hands, and the pulled polyester yarn is scattered; the absence of a network in the S12 stage means that there is no network point.
Specifically, the filament thermal insulation yarn processed by the method can improve the hollowness by 30-50%, and the lightness and thermal insulation property of the material are improved; in addition, the filament yarn has wide and simple application scene and low process cost; the filament thermal-insulation yarn processed by the method has the advantages of no dust, environmental protection, low carbon, high hollowness, strong inclusion, low cost, excellent effect and permanent effect; and more than 10 holes can be formed, and the material can lock higher air in 24-36 holes, so that the effects of light weight and thermal insulation are achieved.
Example two
The novel hollow filament thermal yarn comprises polyester fiber (PET) polyethylene terephthalate, polyamide fiber (PA) polyamide fiber, triocrylic fiber (PAN), polyacrylonitrile fiber and polypropylene fiber (PP) polypropylene synthetic fiber, wherein the specification of the filament synthetic fiber is 30 dxF-5000 dxF, the synthetic fiber can be mixed with fiber and animal fiber for spinning, the collocation composition is any proportion within the percentage, the yarn specification is 20-120 branch lines, the spinning method of the filament comprises three types of melt spinning, solution spinning and dry spinning, and the raw materials of the hollow filament thermal yarn comprise the following components in parts by weight: 30 parts of polyester fiber (PET) polyethylene terephthalate, 10 parts of nylon fiber (PA) polyamide fiber, 20 parts of tri-acrylic fiber (PAN), 40 parts of polyacrylonitrile fiber, 15 parts of polypropylene fiber (PP) polypropylene synthetic fiber, 17 parts of far infrared polyester fiber and 15 parts of viscose fiber.
Example III
The novel hollow filament thermal yarn comprises polyester fiber (PET) polyethylene terephthalate, polyamide fiber (PA) polyamide fiber, triocrylic fiber (PAN), polyacrylonitrile fiber and polypropylene fiber (PP) polypropylene synthetic fiber, wherein the specification of the filament synthetic fiber is 30 dxF-5000 dxF, the synthetic fiber can be mixed with fiber and animal fiber for spinning, the collocation composition is any proportion within the percentage, the yarn specification is 20-120 branch lines, the spinning method of the filament comprises three types of melt spinning, solution spinning and dry spinning, and the raw materials of the hollow filament thermal yarn comprise the following components in parts by weight: 40 parts of polyester fiber (PET) polyethylene terephthalate, 15 parts of nylon fiber (PA) polyamide fiber, 25 parts of tri-acrylic fiber (PAN), 45 parts of polyacrylonitrile fiber, 30 parts of polypropylene fiber (PP) polypropylene synthetic fiber, 19 parts of far infrared polyester fiber and 25 parts of viscose fiber.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. The novel hollow filament thermal yarn is characterized by comprising polyester fiber (PET) polyethylene terephthalate, polyamide fiber (PA) polyamide fiber, triocrylic fiber (PAN), polyacrylonitrile fiber and polypropylene fiber (PP) polypropylene synthetic fiber, wherein the specification of the filament synthetic fiber is 30 dxF-5000 dxF, the synthetic fiber can be mixed and matched with fiber and animal fiber for spinning, and the yarn specification is 20-120 branch lines, and the raw materials of the hollow filament thermal yarn comprise the following components in parts by weight: 30-40 parts of polyester fiber (PET) polyethylene terephthalate, 10-15 parts of nylon fiber (PA) polyamide fiber, 20-25 parts of tri-acrylic fiber (PAN), 40-45 parts of polyacrylonitrile fiber, 15-30 parts of polypropylene fiber (PP) polypropylene synthetic fiber, 17-19 parts of far infrared polyester fiber and 15-25 parts of viscose fiber.
2. A method for manufacturing a novel hollow filament thermal yarn, which is characterized by comprising the following specific steps:
s1, slicing operation
Selecting clean and flawless raw materials, and then cutting the raw materials into uniform sheets by using external equipment, wherein the raw materials comprise, but are not limited to, polyester, polylactic acid, PE and viscose;
s2, pre-crystallization treatment
Mainly improves the softening point of the raw materials, so that the raw materials can be quickly agglomerated in the subsequent processing, namely, the drying process is prevented;
s3, drying treatment
Removing moisture in the raw material slice by using external drying equipment, and setting the drying time according to the warning condition;
s4, screw extrusion treatment after melting
Melting the polyester chips which are subjected to the process treatment by using external equipment, extruding the melt by using a screw after melting, and preparing spinning;
s5, metering treatment of spinning pump
The metering pump is utilized to automatically meter according to the preset technological parameter requirements;
s6, extrusion treatment of melt component
Spraying the metered melt through a melt assembly;
s7, side-blowing air cooling treatment
The heat released by the melt during condensation is taken away in a heat exchange mode by using cooling air with lower temperature by using a fan or other exhaust equipment;
s8, oil nozzle bundling and oiling treatment
To increase bundling of the yarn, the spun yarn is generally multifilament, making it more bundled;
s9, pre-network processing
Preprocessing heavy net, light net and no net conditions;
s10, first hot roller treatment
The first hot roller is utilized to drag the yarn, and the yarn is heated in the yarn dragging process;
s11, second hot roller treatment
Further filament drawing is carried out by utilizing a second hot roller, and the yarn is shaped in the filament drawing process;
s12, network processing
Processing heavy net, light net and no net conditions;
s13, winding treatment
And the spinning cake is rolled according to a certain speed and a certain mode, so that the spinning cake is convenient for normal use in the subsequent process.
3. The method for manufacturing a novel hollow filament thermal yarn according to claim 2, wherein: the S1 stage polyester feedstock is refined from petroleum and its quality needs to be assessed before slicing.
4. The method for manufacturing a novel hollow filament thermal yarn according to claim 2, wherein: the drying mode in the S3 stage is mainly finished by heating and drying, and the drying temperature is increased in a stage manner.
5. The method for manufacturing a novel hollow filament thermal yarn according to claim 2, wherein: the melting equipment in the S4 stage is specifically a double-screw extruder, and the continuity of yarn extrusion is ensured.
6. The method for manufacturing a novel hollow filament thermal yarn according to claim 2, wherein: the melt assembly in the S6 stage is specifically a spinneret plate, and the spinneret plate is used for producing special-shaped section wires, wherein the special-shaped section wires are in a 4c shape.
7. The method for manufacturing a novel hollow filament thermal yarn according to claim 2, wherein: the purpose of the S7 stage is to properly cool the yarn, and then draft and shape the yarn to form a fiber having a certain strength.
8. The method for manufacturing a novel hollow filament thermal yarn according to claim 2, wherein: the S7 stage also aims to reduce the friction coefficient and prevent static electricity, and the friction coefficient is embodied in that the distance from the spinning plate to the winding machine is generally provided with a plurality of rollers and yarn guiding devices, and the influence of friction on the quality of yarns can be reduced through the treatment process.
9. The method for manufacturing a novel hollow filament thermal yarn according to claim 2, wherein: the S10 stage plays a key role in the quality of finished yarn, the temperature in the yarn dragging process can be reasonably set according to the warning condition, meanwhile, the hollowness of the formed filaments is more than or equal to 30%, the number of holes of the filaments is more than 10 holes, specifically 24-36 holes, and the fineness of the filaments can be flexibly set by adjusting an extrusion die according to the requirement.
10. The method for manufacturing a novel hollow filament thermal yarn according to claim 2, wherein: the heavy net in the S12 stage is a heavy net which is obtained by pulling polyester yarns by hands and is difficult to scatter after being pulled; the light net in the S12 stage is low in network fastness, namely, the polyester yarn is pulled by hands, and the pulled polyester yarn is scattered; the absence of a network in the S12 stage means that there is no network point.
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| CN202410189899.XA CN117802651A (en) | 2024-02-20 | 2024-02-20 | Novel hollow filament thermal insulation yarn and manufacturing method thereof |
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