CN110438636B - Air layer knitted fabric and preparation method thereof - Google Patents
Air layer knitted fabric and preparation method thereof Download PDFInfo
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- CN110438636B CN110438636B CN201910810479.8A CN201910810479A CN110438636B CN 110438636 B CN110438636 B CN 110438636B CN 201910810479 A CN201910810479 A CN 201910810479A CN 110438636 B CN110438636 B CN 110438636B
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/10—Patterned fabrics or articles
- D04B1/102—Patterned fabrics or articles with stitch pattern
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
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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
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
-
- 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
- D10B2403/00—Details of fabric structure established in the fabric forming process
- D10B2403/02—Cross-sectional features
- D10B2403/021—Lofty fabric with equidistantly spaced front and back plies, e.g. spacer fabrics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The invention relates to an air layer knitted fabric and a preparation method thereof, wherein the air layer knitted fabric sequentially comprises a surface layer, a subsurface layer, a hollow layer, a secondary inner layer and an inner layer; the hollow layer is connected with the subsurface layer and the sub-lining layer, and the filaments of the hollow layer are separated from the surface layer and the lining layer by mutually stringing and interlocking the fine denier filaments of the subsurface layer and the fine denier filaments of the sub-lining layer; the subsurface layer and the surface layer are woven through a plating structure, and the yarn count of the surface layer completely covers the yarn count of the subsurface layer; and the secondary inner layer and the inner layer are woven through a plating structure, and the yarn of the inner layer completely covers the yarn of the secondary inner layer. The air layer knitted fabric has flat surface, the flatness of the inner and outer layers of cloth covers is consistent with that of Shan Shahan cloth, the fuzzing and pilling resistance is enhanced and can reach 3 grades or more, and the cloth covers are bulked, thick and good in thermal insulation performance.
Description
Technical Field
The invention relates to the technical field of knitted fabrics, in particular to an air layer knitted fabric and a preparation method thereof.
Background
The knitted air layer fabric has comfortable hand feeling, bulkiness, warmth retention and other performances, and is deeply favored by consumers. The production of the general air layer fabric adopts a 3-way/circulation or 6-way/circulation structure, as shown in fig. 1, the general air layer structure is divided into an inner layer, a middle layer and a surface layer, yarns of the hollow layer are connected with the surface layer and the inner layer through a ring collecting structure, 30D-150D polyester filaments or nylon filaments are usually selected as the yarns of the hollow layer to ensure certain bulkiness and warmth retention performance of the hollow layer, the yarns of the middle layer can drill out the inner layer and the outer layer, so that the anti-pilling performance of the fabric is poor, the surface layer and the inner layer of the fabric are not smooth and uneven, and in order to improve the anti-pilling performance of the fabric, most manufacturers add a method for finishing anti-pilling resin in the dyeing and finishing process of the fabric, but the fabric has rigid handfeel, poor bulkiness, poor wearing experience and comfort and high production cost.
Disclosure of Invention
The invention provides an air layer knitted fabric and a preparation method thereof, aiming at solving the problems of uneven surface and inner layer of the existing air layer fabric with poor fuzzing and pilling resistance.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the first aspect of the invention provides an air layer knitted fabric, which sequentially comprises a surface layer, a subsurface layer, a hollow layer, a secondary lining layer and an inner layer; the hollow layer is connected with the subsurface layer and the secondary inner layer, and filaments of the hollow layer are respectively in series and interlocking with the fine denier filaments of the subsurface layer and the secondary inner layer to separate the filaments of the hollow layer from the surface layer and the inner layer; the subsurface layer and the surface layer are woven through a plating structure, and the yarn count of the surface layer completely covers the yarn count of the subsurface layer; and the secondary inner layer and the inner layer are woven through a plating structure, and the yarn of the inner layer completely covers the yarn of the secondary inner layer.
Further, the yarn count of the surface layer and the yarn count of the inner layer are cotton yarn, T/C yarn, R/C yarn, T/R yarn, polyester filament or nylon filament.
Further, the cotton yarn is 32SJC combed cotton yarn.
Further, the yarn count of the subsurface layer and the yarn count of the sub-lining layer are 30D/24F terylene DTY.
Further, the yarn count of the hollow layer is 75D/36F terylene DTY.
The second aspect of the invention provides a method for preparing an air layer knitted fabric, comprising the following knitting process:
the first path is as follows: the needle cylinder, the dial knitting needle are all out of the needle to form a tuck, and simultaneously, hollow layer yarn branches are fed;
the second path: firstly, the knitting needles on the needle dial withdraw the hollow layer yarn branch and the old loop of the inner layer on the needle bar along the track of the needle lifting triangle of the needle dial, the secondary inner layer yarn branch is fed into the needle dial along the track of the needle pressing triangle, and simultaneously, the inner layer yarn branch and the hollow layer yarn branch are looped in front and back, when the hollow layer yarn branch just performs loop stripping and yarn bending on the needle dial knitting needles, and the inner layer yarn branch is positioned on the needle tongue, the needle dial triangle is lifted;
third way: the knitting needles on the needle dial continue to move along the needle lifting triangle, the secondary inner yarn branch in the needle hook of the needle dial is retracted to the position of the needle bar, a new inner yarn branch is fed into the needle hook while moving along the third path of needle pressing triangle track, and an inner layer coil and a secondary inner layer coil on the needle bar are simultaneously sleeved on the coil formed by the newly fed inner yarn branch in a stringing way to form a coil of a plating structure;
fourth path: when the knitting needle of the dial finishes the knitting process, the knitting needle on the needle cylinder moves along the track of the needle lifting cam of the needle cylinder, the hollow layer yarn branch in the needle hook of the needle cylinder is withdrawn onto the needle bar together with the old loop on the surface layer, the sub-surface layer yarn branch is fed into the needle hook along the track of the needle pressing cam of the needle cylinder, meanwhile, the surface layer yarn branch and the hollow layer yarn branch are looped at a position which is higher than the needle bar, and when the hollow layer yarn branch just performs loop stripping and yarn bending on the needle cylinder knitting needle, and the surface layer yarn branch is still on the needle tongue of the needle cylinder knitting needle, the position track of the needle cylinder cam is lifted up;
fifth path: the needle on the needle cylinder continuously moves along the needle lifting triangle of the needle cylinder, the sub-surface layer loop in the needle hook of the needle cylinder is retracted to the position of the needle rod, a new surface layer yarn branch is fed into the needle hook of the needle cylinder while moving along the needle pressing triangle track, and simultaneously the surface layer loop and the sub-surface layer loop on the needle rod are sleeved on the newly fed surface layer yarn branch loop in a stringing way, so that a loop of a plating structure is formed.
Further, the tucking of the first path is an upper and lower full needle tucking or a 1-1 tucking.
Further, the braiding process 5 may be a braiding cycle.
Further, the braiding adopts a 24G double-sided rib knitting machine.
Compared with the prior art, the invention has the following advantages:
according to the air layer knitted fabric, the hollow layer is not related to the surface layer and the inner layer, is only connected with the subsurface layer and the sub-inner layer, and is separated from the parts of the surface layer and the inner layer in a mode that the fine denier filaments of the subsurface layer and the sub-inner layer are mutually sleeved and interlocked; the subsurface layer and the surface layer, the subsurface layer and the inner layer are woven through plating structures, so that yarn branches of the surface layer can completely cover yarn branches of the subsurface layer, and yarn branches of the inner layer can completely cover yarn branches of the subsurface layer, so that the fabric is flat; in conclusion, the air layer knitted fabric has flat surface, the flatness of the inner layer and the outer layer of fabric is consistent with that of Shan Shahan fabric, the fuzzing and pilling resistance performance is enhanced and can reach 3 grade or more, and the fabric is bulked, thick and has good warmth retention performance.
Drawings
FIG. 1 is a schematic structural view of a conventional air layer knitted fabric;
FIG. 2 is a schematic structural view of an air layer knitted fabric according to the present invention;
fig. 3 is a diagram showing the structure of the stitches of the air layer knitted fabric according to the present invention.
Detailed Description
The present invention will be described in detail and in detail by way of the following examples, which are not intended to limit the scope of the invention, for better understanding of the invention.
Example 1
An air layer knitted fabric sequentially comprises a surface layer, a subsurface layer, a hollow layer, a secondary lining layer and a lining layer; the hollow layer is connected with the subsurface layer and the secondary inner layer, and filaments of the hollow layer are respectively in series and interlocking with the fine denier filaments of the subsurface layer and the secondary inner layer to separate the filaments of the hollow layer from the surface layer and the inner layer; the subsurface layer and the surface layer are woven through a plating structure, and the yarn count of the surface layer completely covers the yarn count of the subsurface layer; the secondary inner layer and the inner layer are woven through a plating structure, and the yarn of the inner layer completely covers the yarn of the secondary inner layer;
wherein the yarn count of the surface layer and the yarn count of the inner layer are 32SJC combed cotton yarn, T/C yarn, R/C yarn, T/R yarn, polyester filament yarn or nylon filament yarn; the yarn count of the subsurface layer and the yarn count of the secondary inner layer are 30D/24F terylene DTY; the yarn count of the hollow layer is 75D/36F terylene DTY.
The air layer knitted fabric has flat surface, the flatness of the inner and outer layers of cloth covers is consistent with that of Shan Shahan cloth, the fuzzing and pilling resistance is enhanced and can reach 3 grades or more, and the cloth covers are bulked, thick and good in thermal insulation performance.
Example 2
The preparation of the air layer knitted fabric comprises the following knitting process:
adopting a 24G double-sided rib knitting machine, and 5 paths of knitting cycles; the surface yarn count is 32SJC (combed cotton yarn), the subsurface yarn count is 30D/24F (polyester DTY), the hollow layer yarn count is 75D/36F (polyester DTY), the secondary inner layer yarn count is 30D/24F (polyester DTY), and the inner layer yarn count is 32SJC (combed cotton yarn).
The first path is as follows: the needle cylinder, the dial knitting needle are all out of the needle to form a tuck, and 75D/36F (polyester DTY) is fed at the same time;
the second path: the knitting needle on the needle dial firstly withdraws 75D/36F (polyester DTY) in the needle hook onto the needle bar along the track of the needle lifting triangle of the needle dial, the old loop 32SJC (combed cotton yarn) of the inner layer is withdrawn together onto the needle bar, the secondary inner layer yarn 30D/24F (polyester DTY) is fed into the needle hook along the track of the needle pressing triangle, simultaneously, the 32SJC and the 75D/36F are looped in front and behind, when the 75D/36F just performs loop stripping and yarn bending on the needle dial knitting needle, and when the 32SJC is positioned on the needle tongue, the position of the needle dial triangle is required to be lifted immediately. The 30D/24F of the secondary lining layer is sleeved on the 75D/36 in series for interlocking;
third way: the knitting needle on the needle dial continuously withdraws the 30D/24F in the needle hook of the needle dial to the needle bar along the needle lifting triangle, so that the needle bar of the needle dial simultaneously has two loops of 30D/24F and 32SJC, a new inner yarn branch 32SJC is fed into the needle hook while moving along the third path needle pressing triangle track, and simultaneously, the two loops of 30D/24F and 32SJC on the needle bar are simultaneously sleeved on the newly fed 32SJC loops in a stringing way to form a loop with a plating structure.
Fourth path: when the knitting needle of the dial completes the knitting process, the knitting needle on the needle cylinder moves along the track of the needle lifting cam of the needle cylinder, 75D/36F in the needle hook of the needle cylinder knitting needle, the old loop 32SJC (combed cotton yarn) on the surface layer is withdrawn onto the needle bar together, 30D/24F of the sub-surface layer yarn is fed into the needle hook along the track of the needle pressing cam of the needle cylinder, simultaneously 32SJC and 75D/36 form a loop at a high position and a low position on the needle bar, and when the 75D/36F just performs loop stripping and yarn bending on the needle cylinder knitting needle, and the 32SJC is still on the needle tongue of the needle cylinder knitting needle, the position track of the needle cylinder cam is lifted, so that the 30D/24F loop of the sub-surface layer is sleeved on the 75D/36F loop in a series mode to interlock.
Fifth path: the knitting needle on the needle cylinder continuously moves along the needle lifting triangle of the needle cylinder, the 30D/24F loop in the needle hook of the needle cylinder is retracted to the needle rod, so that the needle rod of the needle cylinder simultaneously has two loops of 30D/24F and 32SJC, a new surface yarn branch 32SJC is fed into the needle hook of the needle cylinder while moving along the needle pressing triangle track, and simultaneously, the two loops of 30D/24F and 32SJC on the needle rod are simultaneously sleeved on the newly fed loop of 32SJC in a stringing way to form a loop of plating structure;
wherein the tuck in the first path is an upper and lower full needle tuck or a 1-1 tuck.
According to the preparation method of the air layer knitted fabric, the hollow layer is not related to the surface layer and the inner layer, is only connected with the subsurface layer and the sub-inner layer, and separates the filaments of the hollow layer from the parts of the surface layer and the inner layer in a mode that the fine denier filaments of the subsurface layer and the sub-inner layer are mutually sleeved and interlocked; the subsurface layer and the surface layer and the subsurface layer are woven through plating structures, so that the surface layer yarn count can completely cover the yarn count of the subsurface layer, and the subsurface layer yarn count can completely cover the yarn count of the subsurface layer, so that the fabric is flat.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. The air layer knitted fabric is characterized by sequentially comprising a surface layer, a subsurface layer, a hollow layer, a secondary lining layer and an inner layer; the hollow layer is connected with the subsurface layer and the secondary inner layer, and filaments of the hollow layer are respectively in series and interlocking with the fine denier filaments of the subsurface layer and the secondary inner layer to separate the filaments of the hollow layer from the surface layer and the inner layer; the subsurface layer and the surface layer are woven through a plating structure, and the yarn count of the surface layer completely covers the yarn count of the subsurface layer; the secondary inner layer and the inner layer are woven through a plating structure, and the yarn of the inner layer completely covers the yarn of the secondary inner layer;
the preparation method of the air layer knitted fabric comprises the following knitting process:
the first path is as follows: the needle cylinder, the dial knitting needle are all out of the needle to form a tuck, and simultaneously, hollow layer yarn branches are fed;
the second path: firstly, the knitting needles on the needle dial withdraw the hollow layer yarn branch and the old loop of the inner layer on the needle bar along the track of the needle lifting triangle of the needle dial, the secondary inner layer yarn branch is fed into the needle dial along the track of the needle pressing triangle, and simultaneously, the inner layer yarn branch and the hollow layer yarn branch are looped in front and back, when the hollow layer yarn branch just performs loop stripping and yarn bending on the needle dial knitting needles, and the inner layer yarn branch is positioned on the needle tongue, the needle dial triangle is lifted;
third way: the knitting needles on the needle dial continue to move along the needle lifting triangle, the secondary inner yarn branch in the needle hook of the needle dial is retracted to the position of the needle bar, a new inner yarn branch is fed into the needle hook while moving along the third path of needle pressing triangle track, and an inner layer coil and a secondary inner layer coil on the needle bar are simultaneously sleeved on the coil formed by the newly fed inner yarn branch in a stringing way to form a coil of a plating structure;
fourth path: when the knitting needle of the dial finishes the knitting process, the knitting needle on the needle cylinder moves along the track of the needle lifting cam of the needle cylinder, the hollow layer yarn branch in the needle hook of the needle cylinder is withdrawn onto the needle bar together with the old loop on the surface layer, the sub-surface layer yarn branch is fed into the needle hook along the track of the needle pressing cam of the needle cylinder, meanwhile, the surface layer yarn branch and the hollow layer yarn branch are looped at a position which is higher than the needle bar, and when the hollow layer yarn branch just performs loop stripping and yarn bending on the needle cylinder knitting needle, and the surface layer yarn branch is still on the needle tongue of the needle cylinder knitting needle, the position track of the needle cylinder cam is lifted up;
fifth path: the needle on the needle cylinder continuously moves along the needle lifting triangle of the needle cylinder, the sub-surface layer loop in the needle hook of the needle cylinder is retracted to the position of the needle rod, a new surface layer yarn branch is fed into the needle hook of the needle cylinder while moving along the needle pressing triangle track, and simultaneously the surface layer loop and the sub-surface layer loop on the needle rod are sleeved on the newly fed surface layer yarn branch loop in a stringing way, so that a loop of a plating structure is formed.
2. The air layer knitted fabric according to claim 1, wherein the yarn count of the surface layer and the yarn count of the inner layer are cotton yarn, T/C yarn, R/C yarn, T/R yarn, polyester filament or nylon filament.
3. The air layer knitted fabric according to claim 2, wherein the cotton yarn is 32SJC combed cotton yarn.
4. The air layer knitted fabric according to claim 1, wherein the yarn count of the subsurface layer and the yarn count of the sub-inner layer are 30D/24F polyester DTY.
5. The air layer knitted fabric according to claim 1, wherein the yarn count of the hollow layer is 75D/36F polyester DTY.
6. The air layer knitted fabric according to claim 1, wherein the tuck loops of the first path are upper and lower full needle tuck loops or 1-1 tuck loops.
7. An air layer knitted fabric according to claim 1, wherein said knitting process 5 passes is a knitting cycle.
8. An air layer knitted fabric according to claim 1, wherein the knitting is performed using a 24G double rib knitting machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910810479.8A CN110438636B (en) | 2019-08-29 | 2019-08-29 | Air layer knitted fabric and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910810479.8A CN110438636B (en) | 2019-08-29 | 2019-08-29 | Air layer knitted fabric and preparation method thereof |
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| CN110438636A CN110438636A (en) | 2019-11-12 |
| CN110438636B true CN110438636B (en) | 2023-09-01 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111020837A (en) * | 2019-12-31 | 2020-04-17 | 台巨纺织（上海）有限公司 | Air layer fabric and production method and application thereof |
| CN112030329B (en) * | 2020-09-01 | 2022-03-29 | 广东溢达纺织有限公司 | Hollow fluffed fabric and preparation method thereof |
| CN112011882B (en) * | 2020-09-07 | 2022-08-19 | 广东易通纺织科技有限公司 | Wool-sticking-preventing fabric and preparation process thereof |
| CN113981596B (en) * | 2021-10-25 | 2024-04-05 | 宁波大千纺织品有限公司 | Natural fine anti-pilling fabric and knitting method thereof |
| CN113969456B (en) * | 2021-11-09 | 2023-04-11 | 广东溢达纺织有限公司 | Texture air layer knitted fabric and manufacturing method and application thereof |
| CN114836883B (en) * | 2022-06-08 | 2023-11-28 | 广东溢达纺织有限公司 | Seven-layer hollow warm-keeping elastic air layer knitted fabric and preparation method thereof |
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| JPH09273045A (en) * | 1996-02-09 | 1997-10-21 | Asahi Chem Ind Co Ltd | Cloth having multiple layered structure |
| CN102162165A (en) * | 2011-03-29 | 2011-08-24 | 上海嘉麟杰纺织品股份有限公司 | Knitted fabric with multiple functions of keeping warm, absorbing moisture, releasing sweat and resisting bacteria and weaving method |
| CN107541849A (en) * | 2017-08-21 | 2018-01-05 | 上海嘉麟杰纺织品股份有限公司 | A kind of stretch knit fabric and its method for weaving |
| CN108866775A (en) * | 2017-05-16 | 2018-11-23 | 达纺企业股份有限公司 | Two-sided circle compiles elastic fabric and its manufacture system and manufacturing method |
| CN210975050U (en) * | 2019-08-29 | 2020-07-10 | 宁波大千纺织品有限公司 | Air layer knitted fabric |
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2019
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09273045A (en) * | 1996-02-09 | 1997-10-21 | Asahi Chem Ind Co Ltd | Cloth having multiple layered structure |
| CN102162165A (en) * | 2011-03-29 | 2011-08-24 | 上海嘉麟杰纺织品股份有限公司 | Knitted fabric with multiple functions of keeping warm, absorbing moisture, releasing sweat and resisting bacteria and weaving method |
| CN108866775A (en) * | 2017-05-16 | 2018-11-23 | 达纺企业股份有限公司 | Two-sided circle compiles elastic fabric and its manufacture system and manufacturing method |
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