CN112708963B - Full-extinction parallel spinning and preparation method thereof - Google Patents
Full-extinction parallel spinning and preparation method thereof Download PDFInfo
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- CN112708963B CN112708963B CN202011589992.8A CN202011589992A CN112708963B CN 112708963 B CN112708963 B CN 112708963B CN 202011589992 A CN202011589992 A CN 202011589992A CN 112708963 B CN112708963 B CN 112708963B
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- extinction
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- inner core
- spinning
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- 238000009987 spinning Methods 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims description 5
- 230000008033 biological extinction Effects 0.000 claims abstract description 88
- 239000004645 polyester resin Substances 0.000 claims abstract description 72
- 229920001225 polyester resin Polymers 0.000 claims abstract description 72
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 13
- 239000002216 antistatic agent Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 12
- 239000006224 matting agent Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000001680 brushing effect Effects 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- 239000000843 powder Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 238000002309 gasification Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000002932 luster Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- 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
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/09—Addition of substances to the spinning solution or to the melt for making electroconductive or anti-static filaments
-
- 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
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
Abstract
The invention provides full-extinction parallel spinning, which comprises an inner core and extinction yarns, wherein extinction yarns are wrapped outside the inner core, the mass ratio of the inner core to the extinction yarns is 3-4:1, the inner core is formed by extruding 100% of polyester resin slices, the extinction yarns comprise polyester resin slices and full-extinction polyester resin master batches, the mass ratio of the polyester resin slices to the full-extinction polyester resin master batches is 1:1, and the full-extinction polyester resin master batches comprise 2.5% of extinction agent and 97.5% of polyester resin slices; the inner core is formed by extruding only common polyester resin slices, the extinction yarn is formed by extruding polyester resin slices and full-extinction polyester resin master batch, and the full-extinction polyester resin master batch contains 2.5% of extinction agent, so that the use amount of the extinction agent is reduced under the condition of obtaining the same extinction performance.
Description
Technical Field
The invention relates to the technical field of spinning, in particular to full-extinction parallel spinning and a preparation method thereof.
Background
With the progress of society, the demand of people for high-grade clothing is increasing at present, and full-dull side-by-side spinning is popular with people because of its advantages of soft hand feeling, soft luster, bright color and good drapability.
The existing full-extinction parallel spinning is to add the matting agent to achieve the aim of extinction during extrusion, and the specific process is to add the matting agent into the spinning raw material to be mixed and then to extrude, so that the matting agent in the spinning obtained by extrusion is uniformly distributed, but the matting agent in the spinning cannot play a role of extinction, so that the waste of the matting agent is caused, and the cost of the matting agent is relatively high.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problem that the matting agent mixed in the spinning cannot play a role in matting, so that part of the matting agent is wasted.
Technical proposal
In order to solve the technical problems, the invention provides full-extinction parallel spinning, which comprises an inner core and extinction yarns, wherein extinction yarns are wrapped on the outer side of the inner core, the mass ratio of the inner core to the extinction yarns is 3-4:1, the inner core is formed by extruding 100% of polyester resin slices, the extinction yarns comprise the polyester resin slices and full-extinction polyester resin master batches, the mass ratio of the polyester resin slices to the full-extinction polyester resin master batches is 1:1, the full-extinction polyester resin master batches comprise 2.5% of extinction agent and 97.5% of polyester resin slices, the use amount of the extinction agent is reduced, and the production cost is reduced.
Furthermore, the cross section of the inner core is circular, the cross section of the extinction wires is crescent, the inner sides of the two extinction wires are clung to the inner core, and the inner core and the two extinction wires form an 8-shaped cross section.
Furthermore, the two extinction wires are spirally wound on the outer side of the inner core, so that the formed spinning strength is higher.
Furthermore, the two extinction wires are fixed on two sides of the inner core in parallel, so that the formed spinning surface is smoother.
The invention provides a preparation method of full-extinction parallel spinning, which comprises the following steps of;
a. mixing to obtain full-dull polyester resin master batch: melting and mixing the matting agent and the polyester resin slice, extruding the mixture into strips, and granulating the strips to obtain master batches;
b. preparing extinction yarn: c, drying the full-dull polyester resin master batch and the polyester resin slices in the step a, and then carrying out mixed extrusion to obtain the dull yarns;
c. the inner core is prepared: drying the polyester resin slice, and then heating and directly extruding to obtain an inner core;
d. preparing full extinction parallel spinning: and (c) tightly attaching the two extinction filaments in the step (b) to the inner core in the step (c), and then extruding the extinction filaments together to form the parallel spinning.
e. And (3) cooling and oiling: cooling the obtained parallel spinning to normal temperature, and brushing a layer of oil on the surface;
f. and (5) winding into a roll: and the parallel spinning after oiling is wound by a winding head, and the spinning is convenient to store after winding.
Further, the particle diameter of the matting agent in the step a is less than 0.3 μm.
Further, during extrusion in the step b, antistatic agent is added to eliminate static electricity, and antistatic agent is also added to eliminate static electricity in the step c.
Further, the step b and the step c are simultaneously extruded, the temperature of the extruded extinction yarn and the temperature of the inner core are 300-400 ℃, and the extinction yarn and the inner core are ensured to be melted.
Further, the temperature of the inner core in the step d is cooled to be between 100 and 150 ℃, and the temperature of the extinction yarn is kept between 250 and 300 ℃, so that the extinction yarn is deformed, and the inner core can be ensured not to be deformed.
Further, the cooling method in the step e is air cooling and/or oil cooling by oiling.
Advantageous effects
1. The extinction yarn is fixed on the outer side of the inner core, the inner core is formed by extruding common polyester resin slices, the extinction yarn is formed by extruding polyester resin slices and full-extinction polyester resin master batch, and the full-extinction polyester resin master batch contains 2.5% of extinction agent, so that the use amount of the extinction agent is reduced under the condition of obtaining the same extinction performance.
2. When the extinction yarn at the temperature of 250-300 ℃ is tightly attached to the inner core at the temperature of 100-150 ℃, the hardness of the inner core is different due to the fact that the temperature difference is adopted, the section shape of the inner core is inconvenient, and the section of the extinction yarn is pressed into a crescent shape.
Drawings
FIG. 1 is a schematic drawing of a full-dull side-by-side spinning section structure of example 1;
FIG. 2 is a schematic side view of the full-dull side-by-side spinning structure of example 1;
FIG. 3 is a flow chart of the full extinction side-by-side spinning process of example 1;
FIG. 4 is a schematic drawing of a full-dull side-by-side spinning section structure of example 2;
FIG. 5 is a schematic side view of the full dull side-by-side spinning structure of example 2;
FIG. 6 is a flow chart of the full extinction side-by-side spinning process of example 2.
Reference numerals illustrate: 100. an inner core; 200. extinction silk.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention;
example 1
As shown in FIG. 1, the full-dull parallel spinning comprises an inner core 100 and a dull yarn 200, wherein the dull yarn 200 is wrapped outside the inner core 100, the mass ratio of the inner core 100 to the dull yarn 200 is 3-4:1, the inner core 100 is formed by extruding 100% of polyester resin slices, the dull yarn 200 comprises the polyester resin slices and full-dull polyester resin master batch, the mass ratio of the specific polyester resin slices to the full-dull polyester resin master batch is 1:1, and the full-dull polyester resin master batch comprises 2.5% of a dulling agent and 97.5% of the polyester resin slices.
Specifically, as shown in fig. 1, the cross section of the inner core 100 is circular, the cross section of the extinction wires 200 is crescent, the inner sides of the two extinction wires 200 are heated and then adhered to the inner core 100, wherein the inner core 100 and the two extinction wires form an 8-shaped cross section, as shown in fig. 2, the two extinction wires 200 are spirally wound on the outer side of the inner core 100, so that the formed spinning surface has a twist texture, and the spinning strength is higher because more extinction wires 200 are used for spiral winding.
As shown in fig. 3, the present invention also provides a method for preparing full-dull side-by-side spinning of example 1, comprising:
a. mixing to obtain full-dull polyester resin master batch: melting, mixing and extruding a delustering agent and polyester resin slices, wherein the specific delustering agent adopts TiO2 powder and polyester resin slices, the delustering agent accounts for 2.5% of the total mass, the polyester resin slices account for 97.5% of the total mass, then heating and mixing, extruding through a screw extruder, extruding into strips, and then cutting into particles to obtain master batches, wherein the particle diameter of the delustering agent powder is smaller than 0.3 mu m, so that the TiO2 powder in the master batches is uniformly distributed, and the full-extinction effect is achieved.
b. To obtain the extinction yarn 200: c, carrying out drying on the full-dull polyester resin master batch and the polyester resin slices in the step a, wherein the ratio of the full-dull polyester resin master batch to the polyester resin slices is 1:1, and the drying temperature is 120 ℃ and the drying time is 30 minutes; and then heating and mixing, and extruding by adopting a screw extruder, wherein the antistatic agent is added during mixing, the addition content of the antistatic agent is 0.2-0.3% of the total mass of the extinction yarn 200, the specific heating temperature is 300-400 ℃, the full extinction polyester resin master batch and the polyester resin slices are ensured to be in liquid state, and severe gasification caused by overhigh temperature does not occur, so that the waste of materials is avoided.
c. The core 100 is prepared: the polyester resin slice is dried, wherein the drying temperature is 120 ℃, then the polyester resin slice is heated and then is directly extruded by a screw extruder to obtain the inner core 100, the antistatic agent is added before the specific extrusion, the addition content of the antistatic agent is between 0.2 and 0.3 percent of the total mass of the extinction yarn 200, the heating temperature before the extrusion is between 300 and 400 ℃, the polyester resin slice is ensured to be in a liquid state, and the severe gasification caused by the overhigh temperature is avoided, so that the waste of materials is avoided.
d. Preparing full extinction parallel spinning: the two extinction wires 200 in the step b are tightly attached to the inner core 100 in the step c, the temperature of the extinction wires 200 is kept between 250 ℃ and 300 ℃ before the extinction wires are tightly attached, the temperature of the inner core 100 is cooled to between 100 ℃ and 150 ℃, then extinction wires with higher temperature are formed into a crescent shape through coextrusion, the extinction wires are adhered to the outer side of the inner core 100, when the extinction wires 200 are contacted with the specific inner core 100, extinction wires 200 transmit heat to the inner core 100, the surface of the inner core 100 is melted, the outer surface of the inner core 100 is melted and adhered with the extinction wires 200, the inner part of the inner core 100 is still between 100 ℃ and 150 ℃, and then the outer extinction wires 200 are continuously close to the crescent shape of the compression stroke of the inner core 100, and meanwhile, the extinction wires 200 are continuously spun in a parallel mode, so that the extinction wires 200 are spirally distributed on the outer side of the inner core 100.
e. And (3) cooling and oiling: and (3) after cooling the obtained parallel spinning to the normal temperature, brushing a layer of oil on the surface, wherein a specific cooling method is air cooling and/or oil cooling by oiling, namely, oil brushing is carried out after air cooling to the normal temperature, or the spinning is directly cooled by the oil during oiling without air cooling, or the final cooling is carried out on the spinning by the oil during oiling after air cooling to the normal temperature, so that the spinning reaches the normal temperature.
f. And (5) winding into a roll: and the parallel spinning after oiling is wound by a winding head, and the spinning is convenient to store after winding.
Example 2
This example differs from example 1 in that two matt filaments 200 are adhered and fixed on both sides of the core 100 in parallel, so that the resulting spinning surface is smooth, but the strength is slightly inferior to that of example 1, but it is less expensive to make matt filaments 200.
As shown in fig. 3, the present invention also provides a method for preparing full-dull side-by-side spinning of example 2, comprising:
a. mixing to obtain full-dull polyester resin master batch: melting, mixing and extruding a delustering agent and polyester resin slices, wherein the specific delustering agent adopts TiO2 powder and polyester resin slices, the delustering agent accounts for 2.5% of the total mass, the polyester resin slices account for 97.5% of the total mass, then heating and mixing, extruding through a screw extruder, extruding into strips, and then cutting into particles to obtain master batches, wherein the particle diameter of the delustering agent powder is smaller than 0.3 mu m, and the TiO2 powder in the master batches can be uniformly distributed to achieve the full-extinction effect.
b. To obtain the extinction yarn 200: c, carrying out drying on the full-dull polyester resin master batch and the polyester resin slices in the step a, wherein the ratio of the full-dull polyester resin master batch to the polyester resin slices is 1:1, and the drying temperature is 120 ℃ and the drying time is 30 minutes; and then heating and mixing, and extruding by adopting a screw extruder, wherein the antistatic agent is added during mixing, the addition content of the antistatic agent is 0.2-0.3% of the total mass of the extinction yarn 200, the specific heating temperature is 300-400 ℃, the full extinction polyester resin master batch and the polyester resin slices are ensured to be in liquid state, and severe gasification caused by overhigh temperature does not occur, so that the waste of materials is avoided.
c. The core 100 is prepared: the polyester resin slice is dried, wherein the drying temperature is 120 ℃, then the polyester resin slice is heated and then is directly extruded by a screw extruder to obtain the inner core 100, the antistatic agent is added before the specific extrusion, the addition content of the antistatic agent is between 0.2 and 0.3 percent of the total mass of the extinction yarn 200, the heating temperature before the extrusion is between 300 and 400 ℃, the polyester resin slice is ensured to be in a liquid state, and the severe gasification caused by the overhigh temperature is avoided, so that the waste of materials is avoided.
d. Preparing full extinction parallel spinning: the two extinction wires 200 in the step b are tightly attached to the inner core 100 in the step c, the temperature of the extinction wires 200 is kept between 250 ℃ and 300 ℃ before the extinction wires 200 are tightly attached, the temperature of the inner core 100 is cooled to between 100 ℃ and 150 ℃, then the extinction wires 200 with higher temperature are extruded together to be deformed into a crescent shape, the extinction wires are adhered to the outer side of the inner core 100, when the specific inner core 100 contacts the extinction wires 200, extinction wires 200 transfer heat to the inner core 100, the surface of the inner core 100 is melted, the melting of the outer surface of the inner core 100 is achieved, the extinction wires 200 are adhered to the inner core 100, the inner part of the inner core 100 is still between 100 ℃ and 150 ℃, then the outer extinction wires 200 are continuously close to the crescent shape of the compression stroke of the inner core 100, and meanwhile the extruded spinning is guaranteed not to rotate, so that the positions of the extinction wires 200 are always fixed on two sides of the inner core 100.
e. And (3) cooling and oiling: and (3) after cooling the obtained parallel spinning to the normal temperature, brushing a layer of oil on the surface, wherein a specific cooling method is air cooling and/or oil cooling by oiling, namely, oil brushing is carried out after air cooling to the normal temperature, or the spinning is directly cooled by the oil during oiling without air cooling, or the final cooling is carried out on the spinning by the oil during oiling after air cooling to the normal temperature, so that the spinning reaches the normal temperature.
f. And (5) winding into a roll: and the parallel spinning after oiling is wound by a winding head, and the spinning is convenient to store after winding.
The data for the spinning of example 1 and the spinning of example 2 and the usual full extinction spinning were measured as follows:
name of the name | Breaking strength | Elongation at break | Whether or not the yarn is fully matted |
Example 1 spinning | 9.5 | 15.2 | Is that |
Example 2 spinning | 8.1 | 14.3 | Is that |
Ordinary full extinction spinning | 8.2 | 13.8 | Is that |
The full extinction of the above table was achieved by either example 1 or example 2, but the breaking strength of example 1 was higher and the breaking elongation was higher than that of example 2 and ordinary full extinction spinning, but the helically wound yarn of example 1 had lines and was not smooth.
In summary, the above-described embodiments are not intended to be limiting embodiments of the present invention, and modifications and equivalent variations, which are within the spirit and scope of the present invention, will be within the technical scope of the present invention.
Claims (9)
1. The full-extinction parallel spinning is characterized by comprising an inner core and extinction yarns, wherein extinction yarns are wrapped outside the inner core, the mass ratio of the inner core to the extinction yarns is 3-4:1, the inner core is formed by extruding 100% of polyester resin slices, the extinction yarns comprise polyester resin slices and full-extinction polyester resin master batches, the mass ratio of the polyester resin slices to the full-extinction polyester resin master batches is 1:1, and the full-extinction polyester resin master batches comprise 2.5% of extinction agent and 97.5% of polyester resin slices;
the preparation method of the full-extinction parallel spinning comprises the following steps of;
a. mixing to obtain full-dull polyester resin master batch: melting and mixing the matting agent and the polyester resin slice, extruding the mixture into strips, and granulating the strips to obtain master batches;
b. preparing extinction yarn: c, drying the full-dull polyester resin master batch and the polyester resin slices in the step a, and then carrying out mixed extrusion to obtain the dull yarns;
c. the inner core is prepared: drying the polyester resin slice, and then heating and directly extruding to obtain an inner core;
d. preparing full extinction parallel spinning: the extinction wires in the step b are tightly attached to the inner core in the step c, and then are extruded together to form parallel spinning;
e. and (3) cooling and oiling: cooling the obtained parallel spinning to normal temperature, and brushing a layer of oil on the surface;
f. and (5) winding into a roll: and the parallel spinning after oiling is wound by a winding head, and the spinning is convenient to store after winding.
2. A full-dull side-by-side spinning according to claim 1, wherein the cross section of the inner core is circular, the cross section of the flat yarn is crescent, the inner sides of two flat yarns are tightly attached to the inner core, and the inner core and the two flat yarns form an 8-shaped cross section.
3. A full dull side-by-side spun yarn of claim 2, wherein two of said flat filaments are helically wound around the outside of the inner core.
4. A full-dull side-by-side spun yarn according to claim 2, wherein two of said flat filaments are secured in parallel on either side of the core.
5. A process for preparing a full-dull side-by-side spinning according to claim 1, wherein the diameter of the particles of the matting agent in step a is less than 0.3 μm.
6. A process for preparing a full-dull side-by-side spinning according to claim 1, wherein the antistatic agent is added to eliminate static electricity during extrusion in step b, and the antistatic agent is also added to eliminate static electricity in step c.
7. The method for preparing full-dull side-by-side spinning according to claim 1, wherein the extrusion in the step b and the extrusion in the step c are carried out simultaneously, and the temperature of the extruded dull filaments and the temperature of the inner core are 300-400 ℃.
8. A process for preparing a full mat side-by-side spin according to claim 7, wherein the core is cooled to a temperature between 100 and 150 ℃ in step d and the mat filament temperature is maintained between 250 and 300 ℃.
9. A method for preparing full-dull side-by-side spinning according to claim 1, wherein the cooling method in step e is air cooling and/or oil cooling with oil.
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106256933A (en) * | 2016-08-28 | 2016-12-28 | 义乌华鼎锦纶股份有限公司 | A kind of moisture absorbing and sweat releasing delustering fibre and preparation method thereof |
WO2017206427A1 (en) * | 2016-06-04 | 2017-12-07 | 江苏启弘新材料科技有限公司 | Preparation method for antistatic fibre based on point discharge effect |
CN109385714A (en) * | 2018-10-15 | 2019-02-26 | 浙江亚特新材料股份有限公司 | A kind of full-dull heat generating and retention c-type abnormity air-coating silk |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2017206427A1 (en) * | 2016-06-04 | 2017-12-07 | 江苏启弘新材料科技有限公司 | Preparation method for antistatic fibre based on point discharge effect |
CN106256933A (en) * | 2016-08-28 | 2016-12-28 | 义乌华鼎锦纶股份有限公司 | A kind of moisture absorbing and sweat releasing delustering fibre and preparation method thereof |
CN109385714A (en) * | 2018-10-15 | 2019-02-26 | 浙江亚特新材料股份有限公司 | A kind of full-dull heat generating and retention c-type abnormity air-coating silk |
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