CN114150411A - Preparation method of high-strength composite covering yarn - Google Patents
Preparation method of high-strength composite covering yarn Download PDFInfo
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- CN114150411A CN114150411A CN202111244987.8A CN202111244987A CN114150411A CN 114150411 A CN114150411 A CN 114150411A CN 202111244987 A CN202111244987 A CN 202111244987A CN 114150411 A CN114150411 A CN 114150411A
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- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000002844 melting Methods 0.000 claims abstract description 44
- 229920000728 polyester Polymers 0.000 claims abstract description 24
- 238000009987 spinning Methods 0.000 claims abstract description 23
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims abstract description 21
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims abstract description 20
- 229920006052 Chinlon® Polymers 0.000 claims abstract description 18
- 230000008018 melting Effects 0.000 claims abstract description 18
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 15
- 229920004933 Terylene® Polymers 0.000 claims abstract description 13
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 12
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 12
- 229920002292 Nylon 6 Polymers 0.000 claims abstract description 10
- 229920000742 Cotton Polymers 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000011787 zinc oxide Substances 0.000 claims description 4
- 241000691155 Pteris multifida Species 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 16
- 239000010410 layer Substances 0.000 abstract description 4
- 239000012792 core layer Substances 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 abstract description 3
- 230000004927 fusion Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 238000007602 hot air drying Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Classifications
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/36—Cored or coated yarns or threads
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
- D02G3/045—Blended or other yarns or threads containing components made from different materials all components being made from artificial or synthetic material
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/40—Yarns in which fibres are united by adhesives; Impregnated yarns or threads
- D02G3/402—Yarns in which fibres are united by adhesives; Impregnated yarns or threads the adhesive being one component of the yarn, i.e. thermoplastic yarn
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
- D10B2321/0211—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene high-strength or high-molecular-weight polyethylene, e.g. ultra-high molecular weight polyethylene [UHMWPE]
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/063—Load-responsive characteristics high strength
Abstract
The invention discloses a preparation method of a high-strength composite covering yarn, which comprises the following steps of spinning skin-core filaments: the core part is made of ultra-high molecular weight polyethylene, and the skin part comprises low density polyethylene; spinning low-melting point polyester FDY, spinning low-melting point polyamide-6, and pre-lapping: pre-combining the low-melting-point cotton fiber 6 and the low-melting-point polyester FD to prepare a combined filament yarn; spinning the high-strength composite covered yarn: spirally coating the prepared combined filament yarn on the outer side of the sheath-core filament yarn, and carrying out grid connection through a network nozzle; and (4) winding. The sheath-core filament yarn with the ultra-high molecular weight polyethylene as the core layer and the low-density polyethylene as the skin layer can be bonded with the terylene with low melting point and the chinlon 6, so that the ultra-high molecular weight polyethylene filament yarn and the combined filament yarn can be combined in a fusion bonding mode, and the phenomenon of fiber slippage can not occur during friction. The fabric prepared by the composite core-spun yarn can not expose the sheath-core filament after use, so that the comfort is not influenced.
Description
Technical Field
The invention relates to the technical field of core-spun yarn preparation, in particular to a preparation method of a high-strength composite core-spun yarn.
Background
Ultra-high molecular weight polyethylene fiber, also called high-strength high-modulus polyethylene fiber (hereinafter referred to as UHMWPE) fiber, is a high-performance fiber recognized in the world, mainly is a filament product, such as UD cloth, rope and the like, and is used in the fields of bulletproof, navigation, sports goods and the like. The density of the ultra-high molecular weight polyethylene fiber is only 0.97g/cm3, and the ultra-high molecular weight polyethylene fiber has the advantages of high strength, high modulus, light resistance, friction resistance, cutting resistance, bending resistance, acid and alkali resistance, common organic solvent resistance and the like, and is an ideal normal-temperature or low-temperature material. As the moisture regain of the UHMWPE is 0, the comfortableness is poor, and for products directly contacted with the skin of a human body, the method for directly producing protective articles such as gloves, socks and the like by using the pure UHMWPE filaments is obviously insufficient in the aspects of comfortableness and application range.
In the chinese invention patent with publication No. CN105624866B and the patent name of a method for preparing ultra-high molecular weight polyethylene filament and cotton covered core yarn, a method for covering cotton fiber outside the ultra-high molecular weight polyethylene filament is disclosed, but since the cotton fiber and the ultra-high molecular weight are only compounded by friction, the bonding force between the two is poor, the slippage of the cotton fiber occurs during friction, the ultra-high molecular weight polyethylene filament is exposed, and the discomfort occurs during use. How to prepare a high-strength core-spun yarn which is suitable for weaving, has good hand feeling and does not have slippage phenomenon when being rubbed becomes a problem to be solved.
Disclosure of Invention
The invention aims to provide a preparation method of a high-strength composite covering yarn, which uses sheath-core filaments with ultra-high molecular weight polyethylene as a core layer and low-density polyethylene as a skin layer, and can be bonded with low-melting-point terylene and chinlon 6, so that the ultra-high molecular weight polyethylene filaments and the mixed filaments can be combined in a fusion bonding mode, and the phenomenon of fiber slippage cannot occur during friction.
In order to solve the technical problem, the invention aims to realize that:
the invention relates to a preparation method of a high-strength composite covering yarn, which comprises the following steps:
s1, spinning of sheath-core filaments: the core part of the sheath-core filament is made of ultra-high molecular weight polyethylene, the sheath part of the sheath-core filament comprises low-density polyethylene, and the melting point of the low-density polyethylene is 110-115 ℃;
s2, spinning of low-melting point polyester FDY: spinning 50-100D/24-36F of low-melting point terylene FDY by using low-melting point terylene slices with a melting range of 110-180 ℃;
s3, spinning of low-melting-point polyamide 6: preparing low-melting-point chinlon 6 multifilament with the melting range of 85-180 ℃ and 35-60D/48-96F;
s4, pre-merging: pre-combining the low-melting-point cotton fiber 6 multifilament and the low-melting-point polyester FDY by adopting a network nozzle to prepare mixed filament yarn, wherein the network degree is 40-50 per meter;
s5, spinning of the high-strength composite covered yarn: spirally coating the prepared combined filament yarn on the outer side of the sheath-core filament yarn, and carrying out grid connection through a network nozzle to prepare high-strength composite coated yarn; in the step, hot air with the temperature of 110-150 ℃ is sprayed out of the network nozzle, and the low-melting-point polyamide-6 composite and low-melting-point polyester FDY surface is heated and bonded with the sheath-core filament;
s6, winding: and winding the high-strength composite covered yarn, wherein the tension during winding is 0.5-0.6 cN/D.
On the basis of the above scheme and as a preferable scheme of the scheme: the nozzle comprises an air inlet, a fiber mixing fiber channel and an air outlet; the mixed fiber yarn channel is communicated with the air inlet and the air outlet; the combined filament yarn channel is composed of a first curve side and a second curve side.
On the basis of the above scheme and as a preferable scheme of the scheme: the first curved side 16 and the second curved side 17 are both parabolic.
On the basis of the above scheme and as a preferable scheme of the scheme: the focuses of the first curve edge and the second curve edge are located at the same position, and yarns pass through the focuses when grid connection is carried out.
On the basis of the above scheme and as a preferable scheme of the scheme: the bark part contains one or more of herba Pteridis Multifidae extract, nano silver and nano zinc oxide.
The invention has the beneficial effects that: the invention relates to a preparation method of a high-strength composite covering yarn, which uses sheath-core filaments with ultra-high molecular weight polyethylene as a core layer and low-density polyethylene as a skin layer, and can be bonded with low-melting-point terylene and chinlon 6, so that the ultra-high molecular weight polyethylene filaments and the mixed filaments can be combined in a fusion bonding mode, and the phenomenon of fiber slippage cannot occur during friction. The fabric prepared by the composite core-spun yarn can not expose the sheath-core filament after use, so that the comfort is not influenced.
Drawings
FIG. 1 is a schematic structural view of a high strength composite core spun yarn according to the present invention;
FIG. 2 is a schematic view of a sheath-core filament construction according to the present invention;
fig. 3 is a schematic diagram of the structure of a network nozzle used in the present invention.
The designations in the figures illustrate the following: 10-a point of attachment; 11-sheath-core filaments; 12-commingled filaments; 13-an air inlet; 14-combined filament yarn channels; 15-air outlet; 16-a first curvilinear edge; 17-a second curvilinear edge; 112-a core; 111-dermatome.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Example one
The present embodiment will be described in detail with reference to fig. 1, 2 and 3. The invention relates to a preparation method of a high-strength composite covering yarn, which comprises the following steps:
s1, spinning of sheath-core filaments: the core part 112 of the sheath-core filament 11 is made of ultra-high molecular weight polyethylene, the sheath part 111 comprises low density polyethylene, and the melting point of the low density polyethylene is 110-115 ℃.
S2, spinning of low-melting point polyester FDY: the low-melting point terylene FDY with the melting range of 110-180 ℃ is adopted to spin 50-100D/24-36F.
The low-melting point terylene FDY with the melting range of 110-180 ℃ is adopted to spin 50D/24F low-melting point terylene slices. The specific low-melting point polyester chip begins to melt at 110 ℃. When the low-melting point polyester FDY is spun, hot air drying is carried out in a hot air device, so that the water content of the low-melting point polyester PET chip is less than or equal to 20 multiplied by 10-6Fluctuation value ≦ 5 × 10-6. The water content and uniformity of the slices are very important for the production of the superfine denier fibers. The low and even moisture content can greatly reduce the thermal cracking and oxidative cracking of the slices during melting, and ensure the smooth production.
The effect of the moisture content of the low-melting polyester chips on the flying yarn breakage of the low-melting polyester fibers is shown in the following table. The statistical time was 24 hours of production time.
| Slice Water content/10-6 | 20 | 25 | 35 | 45 |
| Broken end condition of PET floating filament | Is free of | Is free of | 3 times of | 10 times of |
S3, spinning of low-melting-point polyamide 6: preparing the low-melting-point chinlon 6 multifilament with the melting range of 85-180 ℃ and 35-60D/48-96F. Preparing the low-melting-point chinlon 6 multifilament with the melting range of 85-180 ℃ and 35D/48F. The low-melting polyamide-6 used starts to melt at 85 ℃. When the low-melting-point chinlon 6 is spun, the low-melting-point chinlon 6 slices need to be subjected to hot air drying in a hot air drying device, so that the water content of the low-melting-point chinlon 6 slices is less than or equal to 20 x 10-6Fluctuation value ≦ 5 × 10-6。
The influence of the moisture content of the low-melting-point chinlon 6 chips on the condition of the broken ends of the floating yarns of the low-melting-point chinlon 6 superfine fibers is shown in the following table. The statistical time was 24 hours of production time.
| Slice Water content/10-6 | 15 | 20 | 25 | 35 |
| Broken ends of chinlon floating filaments | Is free of | Is free of | 5 times (twice) | 20 times (twice) |
The subsequent cooling and oiling of the low-melting point polyester and the low-melting point chinlon 6 are similar to those of the conventional polyester and the conventional chinlon 6, and special attention is not needed.
S4, pre-merging: pre-combining the low-melting-point cotton fiber 6 multifilament and the low-melting-point polyester FDY by adopting a network nozzle to prepare the mixed filament yarn 12, wherein the network pressure is 1.4 kg, and the network degree is 40 per meter. A conventional network nozzle may be used in this step, and a network nozzle similar to that used in step S5 may also be used.
S5, spinning of the high-strength composite covered yarn: spirally coating the prepared combined filament yarn 12 on the outer side of the sheath-core filament yarn 11, and carrying out grid connection through a network nozzle to prepare high-strength composite coated yarn; in the step, hot air with the temperature of 110-150 ℃ is sprayed from the network nozzle, and the low-melting-point polyamide-6 composite and low-melting-point polyester FDY surface is heated and bonded with the skin layer of the skin-core filament.
The sprayed hot air acts on the surface of the fiber within a short time, only the surface of the fiber is affected, so that the sheath-core type filament can be bonded with the low-melting-point terylene and the low-melting-point chinlon, and the influence of breakage and the like on the whole filament can be avoided. The overall effect on the high strength covered yarn from the hot air can be controlled by the speed of travel of the high strength composite covered yarn and the operating time of the network nozzles.
Further, the nozzle used in this step includes an air inlet 13, a combined filament yarn channel 14, and an air outlet 15; the combined filament yarn channel 14 is communicated with the air inlet 13 and the air outlet 15; the combined filament channel 14 is composed of a first curved side 16 and a second curved side 17.
Further, the first curved side 16 and the second curved side 17 are both parabolic, and the specific shape is equal to y ═ x2The same shape as (2) may be used, or the curve shape of the conversion function may be used.
Further, the focal points of the first curved side 16 and the second curved side 17 are located at the same position, and the yarn passes through the focal points when the grid connection is performed.
The first curved edge 16 and the second curved edge 17 have parabolic shapes, the first curved edge 16 can enable air flows in all directions to converge towards the focal position of the parabola, and when the high-strength composite covering yarn is produced, the high-strength composite covering yarn is located at the focal position of the parabola, so that more air flows can be reflected and then act on the high-strength composite covering yarn for the second time, and the high-strength composite covering yarn is reinforced firmly. The second curved edge 17 can reflect the high-temperature air flow reflected by the first curved edge 16 again, and can act on the high-strength composite covered yarn for multiple times.
S6, winding: the high-strength composite covered yarn was wound with a tension of 0.5 cN/D.
Example two
The preparation method of the high-strength composite covering yarn related by the embodiment specifically comprises the following steps:
s1, spinning of sheath-core filaments: the core part 112 of the sheath-core filament 11 is made of ultra-high molecular weight polyethylene, the sheath part 111 comprises low density polyethylene, and the melting point of the low density polyethylene is 110-115 ℃. The bark part 111 contains one or more of phoenix-tail fern extract, nano-silver and nano-zinc oxide. Specifically comprises the components of pteris multifida extract, nano silver and nano zinc oxide according to the weight ratio of 1: 1: 1.
S2, spinning of low-melting point polyester FDY: spinning 100D/36F low-melting point terylene FDY by using low-melting point terylene chips with the melting range of 110-180 ℃. The low melting point polyester used starts to melt at around 130 ℃.
S3, spinning of low-melting-point polyamide 6: preparing the low-melting-point chinlon 6 multifilament with the melting range of 85-180 ℃ and 60D/96F. The used low-melting point chinlon 6 starts to melt at about 150 ℃.
S4, pre-merging: the low-melting-point cotton fiber 6 multifilament and the low-melting-point polyester FDY are pre-combined by a network nozzle to prepare the mixed filament yarn 12, the network pressure is 1.4 kg, and the network degree is 50 per meter.
S5, spinning of the high-strength composite covered yarn: spirally coating the prepared combined filament yarn 12 on the outer side of the sheath-core filament yarn 11, and carrying out grid connection through a network nozzle to prepare high-strength composite coated yarn; in the step, hot air with the temperature of 150 ℃ is sprayed from the network nozzle, and the low-melting point polyamide-6 composite and low-melting point polyester FDY surface is heated and bonded with low-density ethylene.
S6, winding: the high-strength composite covered yarn was wound with a tension of 0.6 cN/D.
Comparative example
Compared with the first embodiment, the preparation method of the high-strength composite covered yarn in the comparative example is different from the first embodiment in that the conventional polyester and the conventional nylon are used, namely the melting of the used polyester and the used nylon are higher than those of the first embodiment.
The tensile strength test for separating the sheath-core filament from the combined filament was conducted for the first, second and comparative examples, i.e., the sheath-core filament and the combined filament were held and moved in two directions, respectively, and the tensile strength values of the tests for the first and second examples were 3.5N and 3.2N, while the tensile strength test for the comparative example was conducted for separating the sheath-core filament from the combined filament by untwisting since the sheath-core filament and the combined filament are not bonded to each other. It can be seen that the sheath-core filaments and the combined filaments of the high-strength composite covered yarn prepared in the first and second examples are not easily separated.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. A preparation method of a high-strength composite covering yarn is characterized by comprising the following steps:
s1, spinning of sheath-core filaments: the core part (112) of the sheath-core filament (11) is made of ultra-high molecular weight polyethylene, the sheath part (111) comprises low-density polyethylene, and the melting point of the low-density polyethylene is 110-115 ℃;
s2, spinning of low-melting point polyester FDY: spinning 50-100D/24-36F of low-melting point terylene FDY by using low-melting point terylene slices with a melting range of 110-180 ℃;
s3, spinning of low-melting-point polyamide 6: preparing low-melting-point chinlon 6 multifilament with the melting range of 85-180 ℃ and 35-60D/48-96F;
s4, pre-merging: pre-combining the low-melting-point cotton fiber 6 multifilament and the low-melting-point polyester FDY by adopting a network nozzle to prepare a mixed filament yarn (12), wherein the network degree is 40-50 per meter;
s5, spinning of the high-strength composite covered yarn: spirally coating the prepared combined filament yarn (12) on the outer side of the sheath-core filament yarn (11), and carrying out grid connection through a network nozzle to prepare high-strength composite coated yarn; in the step, hot air with the temperature of 110-150 ℃ is sprayed out of the network nozzle, and the low-melting-point polyamide-6 composite and low-melting-point polyester FDY surface is heated and bonded with the sheath-core filament;
s6, winding: and winding the high-strength composite covered yarn, wherein the tension during winding is 0.2-0.22 cN/D.
2. A method of manufacturing a high strength composite core spun yarn according to claim 1, wherein the nozzle includes an air inlet (13), a combined filament yarn passage (14) and an air outlet (15); the combined filament yarn channel (14) is communicated with the air inlet (13) and the air outlet (15); the combined filament channel (14) is composed of a first curved side (16) and a second curved side (17).
3. A method of making a high strength composite core spun yarn according to claim 1 wherein the first curved side (16) and the second curved side (17) are both parabolic.
4. A method of making a high strength composite core spun yarn according to claim 1, wherein the first curved side (16) and the second curved side (17) have their focal points located at the same position, and the yarn passes through the focal points when the grid connection is performed.
5. The method of claim 1, wherein the sheath portion (111) contains one or more of Pteris multifida extract, nano-silver, and nano-zinc oxide.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114990751A (en) * | 2022-06-17 | 2022-09-02 | 江苏联发纺织股份有限公司 | Polyester hot-melt filament core-spun yarn and preparation method and application thereof |
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| CN110846758A (en) * | 2019-11-06 | 2020-02-28 | 四川润厚特种纤维有限公司 | Preparation process of AB covered yarn |
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| CN114990751A (en) * | 2022-06-17 | 2022-09-02 | 江苏联发纺织股份有限公司 | Polyester hot-melt filament core-spun yarn and preparation method and application thereof |
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