CN116856100A - Weaving method of polylactic acid filament fabric - Google Patents
Weaving method of polylactic acid filament fabric Download PDFInfo
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- CN116856100A CN116856100A CN202310923068.6A CN202310923068A CN116856100A CN 116856100 A CN116856100 A CN 116856100A CN 202310923068 A CN202310923068 A CN 202310923068A CN 116856100 A CN116856100 A CN 116856100A
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- 238000009941 weaving Methods 0.000 title claims abstract description 44
- 238000012216 screening Methods 0.000 claims abstract description 14
- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
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Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
- D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02H—WARPING, BEAMING OR LEASING
- D02H13/00—Details of machines of the preceding groups
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02H—WARPING, BEAMING OR LEASING
- D02H3/00—Warping machines
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
- D03J1/00—Auxiliary apparatus combined with or associated with looms
-
- 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
-
- 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
- D10B2501/00—Wearing apparel
Abstract
The application belongs to the technical field of polylactic acid fabrics, and discloses a weaving method of polylactic acid filament fabric, which comprises the steps of unwinding polylactic acid filament cone yarns, screening by a network nozzle, applying tension, and twisting filament single yarns in a doubling way; the cone angle of the polylactic acid filament yarn is 30-35 degrees; the tension is 50-60 CN; and taking the polylactic acid filament yarn twisted in a doubling way as warp yarn, carrying out sectional warping on the warp yarn to form a beam, and weaving the beam and weft yarn on a loom to obtain the polylactic acid filament fabric. The polylactic acid doubling twisting yarn breakage times in the method are less, the doubling single yarn quality can be improved, and the weaving process is convenient. The application also improves the warping displacement and the like, so that the distance between yarns is increased, backlog is reduced, the beam tension is uniform, and the flat polylactic acid filament fabric is conveniently obtained by weaving. The application also improves the weaving method, improves the cloth cover style, makes the cloth cover have no strip shadow, and solves the problem of warp strip shadow.
Description
Technical Field
The application belongs to the technical field of polylactic acid fabrics, and relates to a weaving method of polylactic acid filament fabrics.
Background
Polylactic acid fiber (PLA) is prepared by taking lactic acid synthesized by biological fermentation or petroleum products as a raw material through dehydration, polycondensation and spinning, and has good biocompatibility and biodegradability. Polylactic acid fiber can be extracted from corn starch, PLA fiber can be completely and naturally degraded, and decomposed into carbon dioxide and water after degradation, so that the polylactic acid fiber is an ecological fiber with sustainable development; the fabric has good hand feeling and draping property, is suitable for various clothing ornaments, home textile suites, sports goods, special purpose fabrics and the like, and has wide market prospect.
The polylactic acid filament yarn is a fiber aggregate which is formed by a plurality of polylactic acid fiber precursors through a stretching and deforming process and has certain mechanical property and thin and long length, and can be woven into PLA woven fabric. The woven fabric is a textile formed by interweaving warp yarns and weft yarns on a loom according to a certain rule; in the preparation before weaving, warp yarn passes through the heald eye and the reed one by one according to the tissue requirement after warping, and the prepared warp yarn and weft yarn can be woven. Polylactic acid fabrics are recently emerging environment-friendly fiber fabrics, and certain problems exist in the weaving process, such as: the polylactic acid filaments are easy to break in the doubling process, so that the defects of high labor intensity, poor doubling quality and the like of operators are caused, the production cost is high, and the application is not facilitated.
Disclosure of Invention
In order to solve the technical problems, the application provides a weaving method of polylactic acid filament fabric, wherein the number of broken filaments of polylactic acid doubling and twisting is small, the doubling single yarn quality can be improved, and the weaving process is convenient.
The application provides a weaving method of polylactic acid filament fabric, which comprises the following steps:
unwinding polylactic acid filament cone yarns, screening by a network spray head, applying tension, and twisting filament single yarns in a doubling way; the cone angle of the polylactic acid filament yarn is 30-35 degrees; the tension is 50-60 CN;
and taking the polylactic acid filament yarn twisted in a doubling way as warp yarn, carrying out sectional warping on the warp yarn to form a beam, and weaving the beam and weft yarn on a loom to obtain the polylactic acid filament fabric.
In an embodiment of the application, the screening pressure is 5-8 MPa.
In the embodiment of the application, filament shearing is further included between the screening and tension application, a broken filament induction device is additionally arranged, and the doubling tension is also adjusted by induction of a filament tension sensing device.
In the embodiment of the application, the displacement of the sectional warping is 0.7-1.3 mm, and the length of the warp beam is below 1000 m.
In an embodiment of the present application, the sectional warping discards the first hank position yarn, starting with the second hank position yarn; the length of warp beam is above 1000 m.
In an embodiment of the present application, the count of the polylactic acid filaments is 100D to 300D.
In an embodiment of the application, the polylactic acid filaments are dope-dyed filaments.
In an embodiment of the application, after the beam is formed, the warp draw is 1 in/dent.
In the embodiment of the application, the sectional warping starts at a constant speed, and the beam is waxed to form a beam after the beam is reversed; the speed of the reverse shaft is 80-100M/min.
In the embodiment of the application, the loom is of a general jet type, and the vehicle speed is 600-700 revolutions per minute.
Compared with the prior art, the application unwinds the polylactic acid filament yarn (cone angle is 30-35 degrees), and after the tension of 50-60 CN is applied by the net spray head for screening, the filament single yarn is twisted in a doubling way; and then, taking the polylactic acid filament yarn twisted in a doubling way as warp yarn, carrying out sectional warping on the warp yarn to form a beam, and weaving the beam and weft yarn on a loom to obtain the polylactic acid filament fabric. Aiming at polylactic acid filaments, the application performs the combination and twisting by net screening and adjusting the tension of yarns to be 50-60 CN, thereby reducing the probability of broken yarns during combination, improving the strength of yarns, being beneficial to the subsequent weaving production, and simultaneously performing two processes can meet the requirements of polylactic acid yarn mass production and fabric, and has good environmental protection. In addition, the polylactic acid twisted yarn is favorable for the stiffness and smoothness characteristics of the fabric, and is suitable for being applied to clothing fabrics such as shirts.
Furthermore, the application also improves the warping displacement and the like, so that the distance between yarns is increased, backlog is reduced, the beam tension is uniform, and the flat polylactic acid filament fabric is conveniently woven.
Aiming at the coloring variety of the polylactic acid stock solution, the natural color is easy to generate strip warp shadow, namely the vision with warp streaks; the application also improves the weaving method, improves the cloth cover style, makes the cloth cover have no strip shadow, and solves the problem of warp strip shadow.
Drawings
FIG. 1 is a schematic diagram of a parallel flow apparatus before modification in accordance with an embodiment of the present application;
FIG. 2 is a schematic diagram of an improved parallel flow apparatus according to an embodiment of the present application;
FIG. 3 is a comparative schematic of the cone winding taper of a cone yarn in some embodiments of the application;
FIG. 4 is a schematic view of the position and angle of a first skein yarn according to the prior art;
FIG. 5 is a schematic diagram of a sectional warping process before improvement according to an embodiment of the present application;
fig. 6 is a schematic diagram of a sectional warping process after improvement according to an embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present application, the following detailed description of the present application with reference to specific embodiments thereof is provided by way of example and explanation only, and should not be construed as limiting the scope of the present application in any way.
The application provides a weaving method of polylactic acid filament fabric, which comprises the following steps:
unwinding polylactic acid filament cone yarns, screening by a network spray head, applying tension, and twisting filament single yarns in a doubling way; the cone angle of the polylactic acid filament yarn is 30-35 degrees; the tension is 50-60 CN;
and taking the polylactic acid filament yarn twisted in a doubling way as warp yarn, carrying out sectional warping on the warp yarn to form a beam, and weaving the beam and weft yarn on a loom to obtain the polylactic acid filament fabric.
The polylactic acid doubling twisting yarn breakage times in the method are less, the doubling single yarn quality can be improved, and the weaving process is convenient.
Fig. 1 and fig. 2 are schematic views of a doubling flow device before and after improvement, respectively, and in an embodiment of the present application, a device and a process for a doubling twisting process of polylactic acid filaments are modified. The yarn count of the polylactic acid filament yarn is mainly 100D-300D, and can be a natural color common variety or a stock solution coloring variety. The cone angle of winding the polylactic acid filament yarn adopted in the embodiment of the application is adjusted from 15-20 degrees to 30-35 degrees before transformation, and the specific reference can be seen in fig. 3.
After the cone yarn filament is unwound, a network spray head is additionally arranged before shearing, and the polylactic acid doubling is screened. The network nozzle screens, which vertically and intermittently irradiates the fed filaments with high-speed air flow to cause the filaments to be entangled and wound with each other, thereby increasing the cohesion of the filament bundle. The pressure for screening the polylactic acid filaments is preferably 5-8 MPa, and further is 6MPa.
The embodiment of the application replaces the conventional common shearing device with a filament cutter (filament cutter for short) and adds a filament breakage sensor; the broken yarn inductor is a broken yarn automatic stop induction device, and can promote the function of broken yarn automatic stop, so that broken yarns in yarn motion are easier to detect and process by the device, and the problems of poor quality, high labor intensity and the like of single yarn in doubling are overcome. The common cutter and the filament cutter are not greatly different in appearance, and the difference is that the filament cutter is made of alloy materials, is sharper than the pure steel materials of the conventional cutter, and can smoothly cut off filament yarns.
In addition, the embodiment of the application also changes the prior common sensor into a filament tension sensor (which can be called a filament detector), and adjusts the tension of the polylactic acid filament yarn from 100N before improvement to 50-60N. After passing through the tension pressure plate, the polylactic acid filaments enter a doubling twisting area to twist filament single yarns in a doubling way, and the speed of the yarn doubling twisting machine can be 500 revolutions per minute. Compared with the common sensor, the filament sensor has the advantages that the tension change test of the yarn is more sensitive, when the yarn runs, tension change can occur when the yarn breaks, the filament sensor can detect low tension fluctuation of the yarn, the sensitivity is higher than that of the common sensor, yarn breaking signals are sent out in time, the yarn is cut off, and the poor yarn ply length is reduced.
Through adding part of equipment parts and improving the doubling twisting process on the existing doubling machine, the embodiment of the application reduces the probability of broken filaments during doubling, improves the strength of yarns, better completes doubling twisting of polylactic acid filament products, is beneficial to subsequent weaving production, and can meet the demands of polylactic acid yarn mass production and fabric.
According to the embodiment of the application, the polylactic acid filament yarn twisted by doubling is used as warp yarn, and the warp beam is formed by sectional warping.
When the existing polylactic acid filament yarn variety is subjected to sectional warping, as the sectional warping first hank yarn is positioned at the neck part of the roller, the tension of a protruding position is tight when the roller is wound on the first hank yarn under the traditional technological parameters, and the tension of other positions is normal, so that the left and right tensions of a loom beam are inconsistent, the cloth cover is uneven when the loom is unwound, warp yarns at the positions with high tension are fluffed, and the problems of low quality and difficult weaving of normal weaving efficiency are caused. As shown in fig. 4, the first lay-slope angle is acute (angle 60 °) resulting in yarn compression and tension; the first lay-type angle is relatively gentle (e.g., 45 °) and also causes yarn extrusion, zhang Lijin.
FIGS. 5 and 6 are schematic views of the process flow of the sectional warping before and after improvement, respectively, and FIG. 5 is the flow before improvement; fig. 6 is a modified flow: formulating process (modifying loom parameters), inputting process, installing filament cone yarn, adding bagging device, opening warping (at uniform speed), warping and rewinding shaft, waxing and forming a loom beam.
In some embodiments of the present application, the displacement of the beam sectional warping yarn below 1000 meters is increased by 1.5 times, specifically 0.7-1.3 mm, and further may be 1.0-1.25 mm; the distance between every two circles of polylactic acid yarns is increased during warping, so that the positions of the yarns are relatively loose, backlog among the warps is reduced, acting force among the yarns is dispersed, the hardness of the whole warp beam is reduced, the tension of first stranded warp yarns in sectional warping is reduced, the left side tension and the right side tension of the warp beam are consistent, the problem of tight first stranded tension is solved, and a subsequent weaving process is facilitated.
In other embodiments of the present application, for the sectional warping of polylactic acid yarn of 1000 meters or more, the first hank winds the waste yarn without using the second hank as a warping starting point, thereby thoroughly solving the problem of high tension of the first hank yarn.
According to the embodiment of the application, the sectional warping is started at a constant speed, and the speed of the vehicle can be 300 revolutions per minute; and (5) waxing after warping and rewinding to form a loom beam. The speed of the reverse shaft is preferably 80-100M/min; the purpose of waxing is to make the yarn surface hairiness paste and the yarn surface smooth, the specific technique is as follows: the liquid wax liquid is used, the solid content is 20%, the volume ratio of the wax liquid to the water is 1:3, and the linear speed of the waxing roller can be 5 m/h. The embodiment of the application can realize the sectional warping of the large shaft of polylactic acid filaments with the length of more than 2000 meters (the variety of the warping filaments is within 1000 meters before, the bottleneck that the warping number of the warping filaments is not more than 1000 meters due to the difference of hardness in weaving is avoided), and the large-scale weaving is realized smoothly.
After the polylactic acid warp yarns are beamed, the drafting process is carried out according to the tissue requirement. The original drafting process is generally 2-in/reed, is mainly suitable for common yarn varieties, and is easy to generate the vision of warp streaks on the natural color cloth cover during weaving for varieties with small warp density and coloring of polylactic acid stock solution. After the loom beam is formed, the reed is replaced, the threading number of warp yarns is changed, and 2-in/dent of the warp heald is changed into 1-in/dent, so that the cloth cover style is improved, the probability of warp streaks is avoided, and the problem of warp streak is solved.
In the specific embodiment of the application, the loom beam and the weft yarn are woven on a general air jet loom to obtain the polylactic acid filament fabric. In some examples, the fabric specification is PLA100D/2 stock solution coloring (26.5S) PLA65/VI35 40S/2 62 x 52 1/1 69", the warp yarn is PLA polylactic acid filament ply yarn PLA100D/2, the weft yarn is PLA65/VI35 40S/2 staple fiber, and the mass ratio of PLA to VI is 65:35. The Viscose (VI) is added to improve the hand feeling of the fabric, and the fabric can make up for the advantages of two materials, has the environment-friendly performance of polylactic acid materials, and has the moisture absorption and sweat release and hand feeling softness of the viscose materials. Among them, the loom speed is preferably 600 to 700 rpm, for example 650 rpm. In addition, the embodiment of the application has no special limitation on fabric tissues, fabric gram weights and the like.
The integral process for weaving the polylactic acid filament fabric is simple, convenient and feasible, high in efficiency and low in cost. The polylactic acid filament fabric obtained by the embodiment of the application has good environmental protection performance, is flat, stiff and smooth, has no streak on the yarn-dyed cloth surface, and can be used as clothing fabrics such as shirts and the like.
The present application will be described in further detail with reference to the following examples and drawings, the examples described herein only assist in understanding the present application, and the embodiments of the present application are not limited thereto.
Example 1
Polylactic acid filament yarn specification 100D/2, PLA100D/2 dope coloring (26.5S) PLA65/VI 35S/2 62 x 52 1/1 69". The warp yarn is colored by 100D/2 stock solution of polylactic acid filaments, and the weft yarn is a polylactic acid blended 65%/viscose 35%40s/2 strand. The warp and weft density is 62 x 52 pieces/inch, and the fabric is 1/1 plain weave and the grey cloth width is 69 inches.
Unwinding the polylactic acid filament yarn on a modified doubling machine by adopting a doubling twisting process shown in fig. 2, and twisting filament single yarns after net feeding, filament shearing and tension application by a network nozzle; the cone angle of the polylactic acid filament yarn is 30 degrees, the screening pressure is 6mpa, and the speed of the doubling screening machine is 500 revolutions per minute; the doubling tension was 50CN. Through the process arrangement, the polylactic acid PLA100D/2 smoothly realizes doubling and screening of large goods, the test result is that the net knot is 120 pieces/meter, the yarn strength reaches 430cn, and the large goods production capacity is achieved.
In addition, according to the figure 1, when the polylactic acid is twisted in a100D doubling way before improvement, the cone angle of the cone yarn is 15 degrees, the yarn tension is 100CN, and the yarn breakage is 1 time per ten meters, so that warp defects are caused; the number of warp breaks in this embodiment is reduced to 0/m.
And taking the polylactic acid filament yarn twisted in a doubling way as warp yarn, and carrying out sectional warping on the warp yarn according to the flow shown in fig. 5 to form a beam. The sectional warping process is specifically shown in table 1:
TABLE 1 example 1 product sectional warping process conditions (more than 1000 meters)
| Project | Warping technology (PLA 100/2) |
| Sectional warping speed | 300 rpm |
| Displacement amount | 1.25mm (improved displacement) |
| Number of split strands | 16 hank+1 hank waste yarn |
| Warping tension | 3mm tension pad |
| Speed of rewinding shaft | 80M/min-100M/min |
Before improvement, the winding hardness difference of the warp chemical fiber filament sectional warping beam is 15 degrees, the sectional warping displacement is 0.5mm, and the subsequent weaving is difficult. The embodiment smoothly realizes the sectional warping of the large shaft of more than 2000 meters of filament by the process and the large cargo weaving.
The technological conditions for producing the beam below 1000 meters are as follows:
table 2 technological conditions for carrying out sectional warping of products (less than 1000 m)
| Project | Warping technology (PLA 100/2) |
| Sectional warping speed | 300 rpm |
| Displacement amount | 0.5mm (improved front displacement) |
| Number of split strands | 16 hank+1 hank waste yarn |
| Warping tension | 3mm tension pad |
| Speed of rewinding shaft | 80M/min-100M/min |
Weaving the loom beam and the weft yarn on a loom, replacing a reed, and changing 2-in/dent into 1-in/dent to obtain the polylactic acid filament fabric, wherein warp streaks disappear. The specification of the fabric is as follows: PLA100D/2 stock staining (26.5S) PLA65/VI35 40S/2 62 x 52 1/1 69".
Wherein the weaving process of the loom is shown in table 3; the specific waxing process comprises the following steps: liquid wax liquid with solid content of 20% is used, the volume ratio of the wax liquid to water is 1:3, and the linear speed of a waxing roller is 5 m/h.
The resulting fabric index is shown in table 4.
Table 3 weaving process of loom
Table 4 loom test index
| Project | Technological requirements |
| Warp yarn support | 100％PLA:100D/2 |
| Weft yarn support | PLA 65/viscose 35 40S/2 |
| Fiber ratio | Fabric fiber ratio: PLA81.5% viscose 18.5% |
| Gram weight of grey cloth | 146.7 g/m 2 |
| Strength of warp direction breaking | 520N |
| Strength of warp direction breaking | 502N |
The fabric is subjected to post-treatment, and in the post-treatment process, light blue dyeing is carried out: seam turning-package pretreatment (enzyme desizing, hot water washing), package dyeing (low-temperature dispersion and activity), drying and tentering; conventional process condition parameters are employed.
The fabric has excellent fabric strength and degradation performance, hazy three-dimensional effect and texture, and high added value. Meanwhile, the fabric is a green fabric, has good environmental protection performance, and is an ideal high-grade clothing fabric.
Example 2
Substantially the same procedure as in example 1 was conducted to obtain a polylactic acid fabric.
The indexes of the obtained fabric are as follows:
table 5 loom test index
| Project | Technological requirements |
| Warp yarn support | Stock solution coloring 100% PLA 150D/2 |
| Weft yarn support | PLA 65/viscose 35 32S/2 |
| Fiber ratio | PLA83.5% viscose 16.5% |
| Gram weight of grey cloth | 135 g/m 2 |
| Strength of warp direction breaking | 550N |
| Strength of warp direction breaking | 514N |
According to the embodiment, the polylactic acid filament network is screened, and the tension of the yarn is adjusted to be 50-60 CN to be combined and twisted, so that the probability of yarn breakage during the combination process can be reduced, the strength of the yarn is improved, and the subsequent weaving production is facilitated. The two processes are carried out simultaneously, so that the requirements of large-scale production and fabric production of polylactic acid yarns can be met, and the environment friendliness is good. In addition, the polylactic acid twisted yarn is favorable for the stiffness and smoothness characteristics of the fabric, and is suitable for being applied to clothing fabrics such as shirts. Furthermore, the application also improves the warping displacement and the like, so that the distance between yarns is increased, backlog is reduced, the beam tension is uniform, and the flat polylactic acid filament fabric is conveniently woven.
The application also improves the weaving and threading method of the polylactic acid stock solution coloring variety, improves the cloth cover style, makes the cloth cover have no strip shadow, and solves the problem of warp strip shadow.
Finally, it should be noted that the specific embodiments described herein are merely illustrative of the spirit of the application and are not limiting of the application. Other modifications and additions to the described embodiments and similar alternatives to the described embodiments will be apparent to those skilled in the art, and it is not necessary nor necessary to fully implement the application. While these obvious variations and modifications, which come within the spirit of the application, are within the scope of the application, they are to be construed as being without departing from the spirit of the application.
Claims (10)
1. The weaving method of the polylactic acid filament fabric is characterized by comprising the following steps of:
unwinding polylactic acid filament cone yarns, screening by a network spray head, applying tension, and twisting filament single yarns in a doubling way; the cone angle of the polylactic acid filament yarn is 30-35 degrees; the tension is 50-60 CN;
and taking the polylactic acid filament yarn twisted in a doubling way as warp yarn, carrying out sectional warping on the warp yarn to form a beam, and weaving the beam and weft yarn on a loom to obtain the polylactic acid filament fabric.
2. The weaving method according to claim 1, characterized in that the screening pressure is 5 to 8MPa.
3. The weaving method of claim 1, wherein the step of applying tension between the screening and the tension further comprises shearing filaments, adding a broken filament sensing device, and sensing and adjusting the doubling tension by a filament tension sensing device.
4. A weaving method according to any one of claims 1 to 3 wherein the displacement of the sectional beam is 0.7 to 1.3mm and the beam warp length is 1000 meters or less.
5. A weaving method according to any one of claims 1 to 3 wherein the sectional warping discards the first hank-position yarn starting with the second hank-position yarn; the length of warp beam is above 1000 m.
6. A weaving method according to any one of claims 1 to 3 wherein the yarn count of the polylactic acid filaments is from 100D to 300D.
7. The method of claim 6, wherein the polylactic acid filaments are dope-dyed filaments.
8. The method of claim 7, wherein the warp draw is 1 in/dent after the forming of the beam.
9. The weaving method of claim 6, wherein the sectional warping starts at a constant speed, and waxing is performed after the warping to form a loom beam; the speed of the reverse shaft is 80-100M/min.
10. A weaving method according to any one of claims 1 to 3 wherein the loom is of the general jet type and has a vehicle speed of 600 to 700 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310923068.6A CN116856100A (en) | 2023-07-26 | 2023-07-26 | Weaving method of polylactic acid filament fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310923068.6A CN116856100A (en) | 2023-07-26 | 2023-07-26 | Weaving method of polylactic acid filament fabric |
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| Publication Number | Publication Date |
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| CN116856100A true CN116856100A (en) | 2023-10-10 |
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|---|---|---|---|
| CN202310923068.6A Pending CN116856100A (en) | 2023-07-26 | 2023-07-26 | Weaving method of polylactic acid filament fabric |
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| Country | Link |
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| CN (1) | CN116856100A (en) |
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- 2023-07-26 CN CN202310923068.6A patent/CN116856100A/en active Pending
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