CN114908453A - Light breathable vamp fabric and light high-elastic fiber spinning process - Google Patents

Light breathable vamp fabric and light high-elastic fiber spinning process Download PDF

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Publication number
CN114908453A
CN114908453A CN202210416469.8A CN202210416469A CN114908453A CN 114908453 A CN114908453 A CN 114908453A CN 202210416469 A CN202210416469 A CN 202210416469A CN 114908453 A CN114908453 A CN 114908453A
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China
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peba
fibers
fabric
tpu
monofilament
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Inventor
伊小琳
陈勇
王旭
徐剑光
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Li Ning China Sports Goods Co Ltd
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Li Ning China Sports Goods Co Ltd
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D9/00—Open-work fabrics
    • 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
    • D01D13/00—Complete machines for producing artificial threads
    • 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
    • D01D5/08—Melt spinning methods
    • 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
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D1/00—Woven fabrics designed to make specified articles
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
    • D03D13/006—With additional leno yarn
    • 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
    • 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
    • D03D15/50—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 properties of the yarns or threads
    • 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
    • D03D15/50—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 properties of the yarns or threads
    • D03D15/573—Tensile strength
    • 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
    • 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
    • D10B2331/06—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyethers
    • 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 provides a light breathable vamp fabric and a fiber spinning process, wherein the fabric is woven by a through hole leno-heddle weaving method, the ground warp in the warp comprises PEBA fiber, and the leno is any one of PEBA fiber, TPEE fiber, TPU fiber, terylene, spandex, chinlon and polyolefin fiber; the weft yarns comprise one or more of PEBA fibers, TPEE fibers, TPU fibers, terylene, spandex, chinlon and polyolefin fibers; the weight ratio of the PEBA fibers in the fabric is 18-100%. In the fiber spinning process, the PEBA elastomer takes long carbon chain nylon 11, long carbon chain nylon 12, nylon 56 and the like as hard segments, and takes polytetrahydrofuran, polypropylene glycol, polyethylene glycol and the like as soft segments. The invention has the advantages that: the weight of the fabric can be effectively reduced by 20% under the same weaving method, meanwhile, the tensile force and the tearing strength of the warp direction and the weft direction are not reduced, the bursting strength is far higher than that of the traditional fabric, the low-temperature bending resistance is better, no crack is generated after 4 thousands of times of low-temperature bending, the application environment range is wider, the transparency is higher, and the visual appearance texture is good.

Description

Light breathable vamp fabric and light high-elastic fiber spinning process
Technical Field
The invention belongs to the technical field of spinning, and particularly relates to a light breathable vamp fabric and a light high-elastic fiber spinning process.
Background
The net surface of the existing sports shoes is usually made of materials such as terylene (PET), chinlon (nylon), spandex (PU), polyolefin elastic fiber, thermoplastic polyurethane elastic yarn (TPU) and the like.
The vamp which is mainly woven by the polyester monofilaments has smaller elasticity, is easy to crack and has poor air permeability; the vamp which is mainly woven by nylon fiber has small elasticity, cannot be used independently, and is easy to form wrinkles after being sewn when being combined with materials such as foam and the like; the elasticity of the spandex is high, but the spandex cannot be used independently when being used on a vamp and needs to be matched with other yarns; the vamp made of the polyurethane elastic yarn is easy to deform and easy to yellow after long-time illumination. Therefore, the existing shoe upper materials still cannot completely meet the requirements under the conditions that the requirements on the comfort and the functionality of sports shoes are higher and higher in the face of the rise of the national fitness.
And current vamp adopts the mode of shuttle weaving to be woven more closely, and this kind of weaving is more closely knit compared with other types of fabrics, and can't adjust the closely knit degree of whole surface fabric, leads to the general weight of current vamp to be on the high side, is difficult to satisfy the pursuit of professional sports shoes to shoes body lightweight.
Therefore, under the current situation that the functional requirements of the vamp of the sports shoe, such as air permeability, wrapping property, light weight, comfort, low temperature resistance, appearance texture, and the like, are higher and higher, the existing vamp still needs to be continuously improved.
Disclosure of Invention
Aiming at the problem that the air permeability, the wrapping property, the light weight, the comfort, the low temperature resistance and the appearance texture of the vamp of the sports shoe in the prior art are still required to be continuously improved, the invention provides a light breathable vamp fabric and a light high-elastic fiber spinning process.
The technical scheme of the invention is as follows: a light breathable vamp fabric is woven by a through-hole leno-heddle weaving method, wherein the ground warp of a warp yarn comprises PEBA fibers, and the leno is any one of PEBA fibers, TPEE fibers, TPU fibers, terylene, spandex, chinlon and polyolefin fibers; the weft yarns comprise one or more of PEBA fibers, TPEE fibers, TPU fibers, terylene, spandex, chinlon and polyolefin fibers; the weight ratio of PEBA fibers in the fabric is 18-100%; the PEBA fiber is a PEBA monofilament and is prepared from a PEBA elastomer through a melt spinning process.
Preferably, the warp yarns consist of 1 skein warp and 6 ground warps, and both the warp yarns and the weft yarns are PEBA monofilaments, wherein the weight percentage of the PEBA fibers is 100%.
Preferably, the ground warp consists of 1 PEBA monofilament and 5 TPU monofilaments, and the skein is 1 TPU monofilament; the weft yarn consists of polyester multifilament; the weight percentages of the PEBA, the TPU and the polyester fiber are respectively 18 percent, 45 percent and 37 percent.
Preferably, the ground warp consists of 4 PEBA monofilaments and 2 TPU monofilaments, and the skein is 1 TPU monofilament; the weft yarn consists of polyester multifilament; the weight percentages of the PEBA, the TPU and the polyester fiber are respectively 50 percent, 27 percent and 23 percent.
Preferably, the ground warp consists of 5 PEBA monofilaments and 1 TPU monofilament, and the skein is 1 TPU monofilament; the weft yarn consists of polyester multifilament; the weight percentages of the PEBA, the TPU and the polyester fiber are respectively 70%, 16% and 14%.
A spinning process of light high-elastic fibers is used for processing the PEBA fibers and comprises the following steps:
s1, drying the selected PEBA thermoplastic elastomer raw material, taking out the sample, cooling, and placing the sample in a dryer for later use, wherein the drying temperature is 110-150 ℃, and the drying time is 5-12 h;
s2, carrying out melt spinning on the dried PEBA thermoplastic elastomer, wherein the melt spinning temperature is 200-300 ℃, and the spinneret plate temperature is 220-320 ℃, and carrying out ice water molding, hot water stretching, hot air stretching, primary shaping, secondary shaping, oiling and slipping, and winding processes to obtain PEBA monofilaments, wherein the spinning length of each process section is 3-15m, and the traction speed is 30-250 m/min;
one or more of long carbon chain nylon 11, long carbon chain nylon 12, nylon 56, nylon 6 and nylon 66 of the PEBA elastomer are used as hard segments, and one or more of polytetrahydrofuran, polypropylene glycol, polyethylene glycol, polyether glycol copolymer, polyether diamine and polysiloxane polyolefin are used as soft segments.
Furthermore, the Shore hardness of the PEBA elastomer is 20-72D, and the melt index is 0.5-25g/10 min.
Furthermore, the diameter of the PEBA monofilament is 0.10-0.3 mm.
Furthermore, an auxiliary agent can be added according to the needs in the melt spinning process, wherein the antioxidant is as follows: antioxidant 1010, antioxidant 1098, antioxidant 1076 and antioxidant 168; the anti-thermal yellowing agent comprises: one or more of Figrep TAY-R adv, Figrep TAY and Figrep TAY-R new; the phenol yellowing resistant agent comprises: one or more of Figrep PY7021-LF and Figrep PYW; the processing aids are borane and silanes and their derivatives.
Further, the processing of the PEBA fiber comprises the steps of:
s1, drying the selected PEBA elastomer raw material for 10 hours at 110 ℃;
s2, carrying out melt spinning on the dried raw materials at 245 ℃, wherein the spinneret plate temperature is 275 ℃, and then respectively carrying out ice water molding, hot water stretching, hot air stretching, primary molding and secondary molding, oiling and smoothing, wherein the traction speed is 160m/min, so as to obtain PEBA monofilaments;
the raw material of the PEBA elastomer is a PEBA elastomer which takes nylon 11 as a hard segment and polytetrahydrofuran as a soft segment, the Shore hardness is 55D, and the density is 1.025g/cm 3 The melt index was 17g/10 min.
The invention has the advantages that: the vamp fabric made by the PEBA monofilaments prepared by the method in combination with the through hole leno heddle process can effectively reduce the weight of the traditional monofilament fabric by 20% under the same weaving method, simultaneously maintains the tension and the tearing strength in the warp and weft directions not to be reduced, has the bursting strength far higher than that of the traditional monofilament fabric, and is more favorable for bearing the violent action in the professional exercise process without cracking, thereby playing the role of exercise protection; the fabric disclosed by the invention is excellent in low-temperature bending resistance, free of cracks after being bent for 4 thousands of times at low temperature, wider in application environment range and wide in application scene in part of low-temperature areas. The fabric containing the PEBA monofilament has softer and more skin-friendly hand feeling, higher transparency and good visual appearance texture.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the improvement of vamp fabrics, the selection of fibers and the weaving process are two different angles, and in order to prepare the vamp which integrates light weight, ventilation, comfort, strong environmental adaptability and environmental protection, the invention starts with the improvement and optimization of the vamp from two angles of fiber materials and the weaving process.
In the selection of fiber material raw materials, the invention selects the thermoplastic elastomer with good processability, good dimensional stability and good wear resistance from a plurality of thermoplastic elastomers as the raw materials for fiber processing; preference is given to polyamide-based thermoplastic elastomers obtained from polyether polyamide alternating block copolymers (PEBA elastomers).
The PEBA elastomer has the performance advantages of good processability, good dimensional stability, wear resistance and the like of polyamide, and also has good low-temperature toughness and rebound resilience of polyether, low initial modulus and soft skin-friendly hand feeling; in the invention, the PEBA elastomer is preferably prepared by taking one or more of long carbon chain nylon 11, long carbon chain nylon 12, nylon 56, nylon 6 and nylon 66 as hard blocks and one or more of polytetrahydrofuran, polypropylene glycol, polyethylene glycol, co-polyether glycol, polyether diamine and polysiloxane polyolefin as soft blocks. Particularly, the PEBA elastomer taking the long carbon chain nylon 11 as the hard segment has the functional attributes of lower water absorption rate and green and environment-friendly bio-based on the advantages.
Preferably, the PEBA elastomer has a Shore hardness of 20-72D and a melt index of 0.5-25g/10 min.
The melt spinning process of the invention is as follows:
(1) drying the selected PEBA thermoplastic elastomer raw material, taking out the sample, cooling, and placing the sample in a dryer for later use, wherein the drying temperature is 110-;
(2) carrying out melt spinning on the dried PEBA thermoplastic elastomer at the temperature of 200-300 ℃ and the temperature of a spinneret plate at the temperature of 220-320 ℃, and carrying out ice water molding, hot water stretching, hot air stretching, primary shaping, secondary shaping, oiling and smoothing, winding and other processes to obtain a bio-based polyether polyamide elastomer monofilament (PEBA monofilament); the spinning length of each process section is 3-15m, and the traction speed is 30-250 m/min.
Other additives and processing aids can be added according to needs in the melt spinning process to improve the aging resistance, phenol yellowing resistance and processing fluidity of the fiber; for example: the antioxidant is selected from antioxidant 1010, antioxidant 1098, antioxidant 1076 and antioxidant 168; the anti-thermal yellowing agent comprises: one or more of Figrep TAY-R adv, Figrep TAY and Figrep TAY-R new; the phenol yellowing resistant agent comprises: one or more of Figrep PY7021-LF and Figrep PYW; the processing aid is selected from borane and silane and derivatives thereof.
The monofilament diameter in the processing is 0.01-1.00mm, preferably 0.05-0.5mm, more preferably 0.10-0.3 mm.
In the weaving process, the weaving method of the vamp fabric adopts a through hole leno heddle weaving method, and the vamp fabric can be made of 100% PEBA monofilament and can also be made of PEBA monofilament and other fibers in a blending mode. The specific weaving method comprises the following steps:
(1) the warp consists of a ground warp and a twisted warp, wherein the ground warp comprises PEBA fibers, and the twisted warp is one or more of PEBA fibers, thermoplastic polyester elastomer fibers (TPEE fibers), TPU fibers, terylene, spandex, chinlon and polyolefin fibers;
(2) the weft yarns are one or more of PEBA fibers, TPEE fibers, TPU fibers, terylene, spandex, chinlon and polyolefin fibers;
(3) each strand of warp consists of 1 skein and 1-6 ground warps, and the skein and the ground warps are twisted once after 1-12 weft yarns are woven according to the requirement of the weave structure, so that the surface of the fabric presents a uniformly distributed porous breathable yarn hole weave.
The specific yarn number of the warp and weft yarns can be adjusted according to the thickness of the fiber, the single yarn or the multifilament, and the yarn number in the present invention is described according to the conventional number in the weaving of the open-end leno heddle, and is not strictly limited.
Compared with the common wear fabric, the vamp fabric has more specific requirements on coating property and comfort, if the whole fabric has overlarge elasticity, the coating property and the support property are poor, and if the elasticity is too small, the comfort is insufficient; the through-hole leno heddle weaving method is selected to be combined with PEBA fibers, so that the vamp fabric has more outstanding advantages, warp yarns in the through-hole leno heddle weaving method are twisted, the occupied space of adjacent warp yarns is increased, the elongation of fibers in the warp direction is higher, and meanwhile, the elongation of the weft direction is ensured to be unchanged; therefore, the combination mode not only ensures the coating property of the vamp (the elongation in the weft direction is unchanged), but also improves the wearing comfort (the elongation in the warp direction is relatively high), and is more suitable for manufacturing vamp fabrics. Particularly, the PEBA monofilament prepared by the invention is used in the ground warp of the warp, even in a blending mode, the elongation of the warp yarn is more outstanding than that of the weft yarn on the basis of ensuring the light weight, and the combination of good air permeability, covering property and comfort of the vamp fabric is realized.
Examples 1-5 below are schematic illustrations of the melt spinning process for PEBA elastomer, and examples 6-9 are schematic illustrations of the process for weaving face fabric containing PEBA fibers using through-hole leno heddle style.
Example 1
Selecting a PEBA elastomer with nylon 11 as a hard segment and polytetrahydrofuran as a soft segment, wherein the hardness (Shore D) is 72, and the density is 1.02g/cm 3 The melt index was 8g/10 min.
The melt spinning process is as follows:
(1) drying the selected PEBA thermoplastic elastomer raw material at 110 ℃ for 10 h;
(2) and (3) carrying out melt spinning on the dried raw materials at 275 ℃ with the spinneret plate temperature of 305 ℃, and then respectively carrying out ice water molding, hot water stretching, hot air stretching, primary shaping and secondary shaping, oiling and smoothing, wherein the traction speed is 120m/min, so as to obtain the PEBA monofilament.
Example 2
Selecting a PEBA elastomer with nylon 11 as a hard segment and polytetrahydrofuran as a soft segment, wherein the hardness (Shore D) is 55, and the density is 1.025g/cm 3 The melt index was 17g/10 min.
The melt spinning process is as follows:
(1) drying the selected PEBA thermoplastic elastomer raw material at 110 ℃ for 10 h;
(2) and (3) carrying out melt spinning on the dried raw materials at 245 ℃, wherein the spinneret plate temperature is 275 ℃, and then respectively carrying out ice water molding, hot water stretching, hot air stretching, primary shaping and secondary shaping, oiling and smoothing, wherein the traction speed is 160m/min, so as to obtain the PEBA monofilament.
Example 3
Selecting a PEBA elastomer with nylon 11 as a hard segment and polytetrahydrofuran as a soft segment, the hardness (Shore D) of the PEBA elastomer is 20, and the density of the PEBA elastomer is 1.025g/cm 3 The melt index was 25g/10 min.
The melt spinning process is as follows:
(1) drying the selected PEBA thermoplastic elastomer raw material at 110 ℃ for 10 h;
(2) and (3) carrying out melt spinning on the dried raw materials at 225 ℃ with the spinneret plate temperature of 255 ℃, and then respectively carrying out ice water molding, hot water stretching, hot air stretching, primary shaping and secondary shaping, oiling and smoothing, wherein the traction speed is 185m/min, so as to obtain the PEBA monofilament.
Example 4
Selecting a PEBA elastomer with nylon 11 as a hard segment and polytetrahydrofuran as a soft segment, wherein the hardness (Shore D) is 55, and the density is 1.025g/cm 3 The melt index was 17g/10 min.
The melt spinning process is as follows:
(1) drying the selected PEBA thermoplastic elastomer raw material at 110 ℃ for 10 h;
(2) and (3) carrying out melt spinning on the dried raw materials at 245 ℃, wherein the spinneret plate temperature is 275 ℃, and then respectively carrying out ice water molding, hot water stretching, hot air stretching, primary shaping and secondary shaping, oiling and smoothing, wherein the traction speed is 100m/min, so as to obtain the PEBA monofilament.
Example 5
Selecting a PEBA elastomer with nylon 11 as a hard segment and polytetrahydrofuran as a soft segment, wherein the hardness (Shore D) is 55, and the density is 1.025g/cm 3 The melt index was 17g/10 min.
The melt spinning process is as follows:
(1) drying the selected PEBA thermoplastic elastomer raw material at 110 ℃ for 10 h;
(2) and (3) carrying out melt spinning on the dried raw materials at 245 ℃, wherein the spinneret plate temperature is 275 ℃, and then respectively carrying out ice water molding, hot water stretching, hot air stretching, primary shaping and secondary shaping, oiling and smoothing, wherein the traction speed is 220m/min, so as to obtain the PEBA monofilament.
Comparative example 1
Selecting TPEE raw material, wherein the hardness (Shore D) is 64, and the density is 1.26g/cm 3 The melt index was 13g/10 min.
The melt spinning process is as follows:
(1) drying the selected TPEE raw material for 10 hours at 110 ℃;
(2) and (3) carrying out melt spinning on the dried raw materials at 255 ℃, wherein the spinneret plate temperature is 255 ℃, and then respectively carrying out ice water molding, hot water stretching, hot air stretching, primary shaping and secondary shaping, then oiling and smoothing, wherein the traction speed is 140m/min, so as to obtain the TPEE monofilament.
TABLE 1 comparison of monofilament Properties
Figure BDA0003606239400000071
Table 1 shows the comparison of the properties of the filaments under different spinning process conditions. Examples 1-5 are PEBA filaments melt spun from a PEBA elastomer having nylon 11 as the hard segment and polytetrahydrofuran as the soft segment.
The PEBA elastomer raw materials with different hardness and melt index are selected in the examples 1-3, and the spinning results show that the melt spinning temperature and the spinneret plate temperature are both reduced along with the increase of the melt index and the reduction of the hardness of the PEBA raw materials, and the traction speed is increased at the same time, and the corresponding monofilament mechanical results show that the maximum tension of the monofilament is reduced and the maximum elongation is improved. For different grades of PEBA raw materials, in example 2, under the melt spinning conditions of the spinning temperature of 245 ℃, the spinneret temperature of 275 ℃, and the drawing speed of 160m/min, the maximum tensile force of the monofilament is high, and the maximum elongation is relatively high, so that the strength of the monofilament in the using process can be ensured, and meanwhile, the fabric has good flexibility, so that a wearer can enjoy more comfortable wearing experience while obtaining a good exercise protection effect.
Further analysis of examples 2, 4 and 5 shows that the melt extrusion speed has an effect on the maximum draw force and the maximum elongation of the final filament sample for the same PEBA feedstock with the same melt index and hardness under the same conditions of spinning temperature and spinneret temperature. When the melt extrusion rate is too low, the degree of orientation of the molecular chains in the fibers is low, and therefore the maximum tensile force is too low, and it is difficult to satisfy the use requirements as an upper material. When the extrusion speed is too high, the degree of molecular orientation and crystallinity are rather decreased, resulting in that the maximum tensile force and the maximum elongation of the monofilament of example 5 are lower than those of example 2.
Comparative example 1 is the mechanical test result of TPEE monofilament, from which it can be seen that the maximum tensile strength of PEBA monofilament is higher than that of TPEE monofilament and the maximum elongation is much lower than that of TPEE monofilament under similar spinning process parameters. Further, the PEBA monofilament has higher strength in the vamp monofilament, and has relatively low elasticity, so that the PEBA monofilament can provide better wrapping property and support property for feet after being used as shoe fabric, and further provides excellent sport protection function.
The melt spinning process parameters of the monofilaments used in the fabric samples of examples 6-9 were the same as those of example 2, namely, a PEBA elastomer having nylon 11 as a hard segment and polytetrahydrofuran as a soft segment, a hardness (Shore D) of 55 and a density of 1.025g/cm 3 The melt index was 17g/10 min.
Example 6
This example consisted of 100% PEBA monofilament; each twisting group takes 6 PEBA monofilaments as ground warps and 1 PEBA monofilament as twisted warps, and the twisted warps and the ground warps are twisted once after weaving 1 weft yarn consisting of the PEBA monofilaments, so that the surface of the woven fabric integrally presents a uniformly distributed porous breathable yarn hole structure.
Example 7
The fabric sample in the embodiment is formed by blending and weaving PEBA monofilaments, TPU monofilaments and polyester multifilament fibers, wherein the weight proportion of the PEBA monofilaments is 18%, the weight proportion of the TPU monofilaments is 45% and the weight proportion of the polyester multifilament is 37%, each twisting group takes 1 PEBA monofilament and 5 TPU monofilaments as ground warps, 1 TPU monofilament is taken as twisted warps, and the twisted warps and the ground warps are twisted once after weaving 1 weft yarn consisting of the polyester multifilament fibers, so that the surface of the fabric presents a porous breathable yarn hole tissue which is uniformly distributed.
Example 8
In this embodiment, the fabric sample is formed by weaving PEBA monofilament, TPU monofilament and polyester multifilament fiber in a mixed manner, wherein the weight ratio of the PEBA monofilament is 50%, the weight ratio of the TPU monofilament is 27%, and the weight ratio of the polyester multifilament fiber is 23%, each of the twisting groups uses 4 PEBA monofilaments and 2 TPU monofilaments as ground warps, 1 TPU monofilament is used as twisted warps, and the twisted warps and the ground warps are twisted once after weaving 1 weft yarn composed of the polyester multifilament fiber, so that the surface of the fabric presents a porous breathable yarn pore structure uniformly distributed.
Example 9
In the embodiment, the fabric sample is formed by weaving PEBA monofilaments, TPU monofilaments and polyester multifilament fibers in a mixed mode, wherein the weight ratio of the PEBA monofilaments is 70%, the weight ratio of the TPU monofilaments is 16% and the weight ratio of the polyester multifilament fibers is 14%, each twisting group takes 5 PEBA monofilaments and 1 TPU monofilament as ground warps, 1 TPU monofilament as twisted warps, and the twisted warps and the ground warps are twisted once after weaving 1 weft yarn composed of the polyester multifilament fibers, so that the surface of the fabric presents a porous breathable yarn hole tissue which is uniformly distributed.
Comparative example 2
The fabric sample is made by adopting a leno heddle weaving method by using 100 percent of TPEE monofilaments, namely, each skein group takes 6 TPEE monofilaments as ground warp and 1 TPEE monofilament as skein warp, and the skein warp and the ground warp are twisted once after weaving 1 weft yarn consisting of the TPEE monofilaments, so that the surface of the fabric presents a porous breathable yarn hole tissue uniformly distributed.
Comparative example 3
The fabric sample is formed by mixed weaving of TPEE monofilament, TPU monofilament and polyester multifilament fiber, wherein the weight percentage of the TPEE monofilament is 20%, the weight percentage of the TPU monofilament is 44% and the weight percentage of the polyester multifilament fiber is 36%, namely, each twisting group takes 5 TPEE monofilament as ground warp and 1 TPU monofilament as twisted warp, and after weaving 1 weft yarn consisting of the polyester multifilament fiber, the twisted warp and the ground warp are twisted once, so that the surface of the fabric presents a porous breathable yarn hole tissue which is uniformly distributed.
Experiments show that in examples 6-9, due to the addition of the PEBA monofilament, the obtained fabric has softer and skin-friendly hand feeling compared with the common TPEE monofilament or TPU monofilament fabric, and the fabric containing the PEBA monofilament has higher transparency and good visual appearance texture.
Table 2 shows the comparison of the properties of the fabrics of different examples. Air permeability standard: GB/T5453-1997.
TABLE 2 comparison of Fabric Properties
Figure BDA0003606239400000101
The comparison result of the fabric performance shows that the vamp fabric woven by the leno heddle process shows good air permeability due to the uniform porous fabric weave structure presented on the surface (the air permeability is only 65.7mm/s compared with the air permeability of a common densely woven vamp), wherein the PEBA fabric obtained in example 6 is woven by all PEBA monofilaments and has the highest air permeability.
From the results of example 6 and comparative example 2, it can be seen that the pure PEBA fabric has a grammage of only 155g/m compared to a pure TPEE fabric woven by the same through-hole leno-heddle weaving method 2 Compared with the common monofilament fabric adopting the same weaving process, the weight of the fabric can be effectively reduced by about 20 percent, and the goal of lightening the shoe upper is achieved. Meanwhile, although the tensile force and the tearing strength of the pure PEBA monofilament fabric in the warp direction and the weft direction are similar to those of the pure TPEE fabric, the bursting strength of the pure PEBA fabric is far higher than that of the pure TPEE fabric, which shows that the fabric prepared by the PEBA monofilaments is more favorable for bearing violent actions in the professional exercise process without cracking, thereby playing the role of exercise protection.
In addition, the normal temperature bending of the PEBA and the TPEE can reach 10 ten thousand times without cracks, but the bending resistance of the PEBA monofilament is better under the low temperature condition, after 4 ten thousand times of low temperature bending, the pure PEBA monofilament fabric has no cracks, but the pure TPEE monofilament fabric is cracked after being tested under the same test condition, which shows that the PEBA monofilament fabric has wider application environment range and also has wide application scenes in partial low temperature areas. The wear resistance of the fabric woven by taking the PEBA and TPEE monofilaments as raw materials can meet the physical property requirement of 4-ten-thousand Martindale wear-resistant shoe products.
Example 7 differs from comparative example 3 in that comparative example 3 was obtained by performing the same leno weaving process by replacing the PEBA monofilament in example 7 with TPEE monofilament. From the results of example 7 and comparative example 3, it can be seen that, for the fabric, when PEBA and TPEE monofilaments are contained therein in similar weight ratios, the grammage of the PEBA/TPU/polyester blended fabric is lighter, and the tension, tear, elongation and bursting strength in the warp/weft direction are all higher than those of the TPEE/TPU/polyester blended fabric. In addition, although the weight ratio of PEBA in the PEBA/TPU/terylene mixed fabric is only 18%, the PEBA/TPU/terylene mixed fabric still shows excellent low-temperature bending resistance under low temperature conditions, no crack is generated after 4 ten thousand times of bending tests, and under the same conditions, the TPEE/TPU/terylene mixed fabric with the weight ratio of TPEE monofilament of 20% has obvious fracture. The PEBA monofilaments obtained by the melt spinning method can be added into the fabric to enable the fabric to have the comprehensive performance advantages of light weight, good flexibility, fatigue resistance and low temperature resistance.
Compared to example 6 and comparative example 2, the fiber components in the fabrics of example 7 and comparative example 3 are more, and when the weft yarns are replaced with polyester multifilaments from monofilaments, the wear resistance of the fabrics is relatively reduced, so that both exhibit a slight fuzzing phenomenon, but do not affect the actual product quality. Also, the air permeability of example 7 and comparative example 3 is slightly reduced compared to example 6 and comparative example 2, but still much higher than that of a conventional densely woven upper.
The physical property test results of the comparative examples 7, 8 and 9 show that the gram weight of the fabric is significantly reduced with the increase of the weight ratio of the PEBA monofilaments in the fabric, while the tensile force, the tear, the elongation and the bursting strength in the warp direction and the weft direction are not significantly changed, which further indicates that the addition of the PEBA monofilaments can reduce the weight of the fabric without sacrificing the strength of the fabric, thereby meeting the application requirement of light weight of the fabric. In addition, the sample fabric obtained by the leno heald weaving method of the PEBA, the TPU and the polyester yarn has the advantage that the latitudinal elongation is obviously lower than that of the warp direction, and the method not only improves the comfort, but also ensures the cladding performance.
The PEBA monofilaments added in the examples 7-9 enable the fabric to show good bending resistance in normal-temperature and low-temperature bending tests, and the fabric has no crack and fracture problems after the tests, good wear resistance and no fluffing and pilling problems, so that the fabric has good service performance at different environmental temperatures and has stable appearance after being worn for a long time.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The light breathable vamp fabric is characterized in that the fabric is woven by a through hole leno-heddle weaving method, the ground warp in the warp comprises PEBA fibers, and the leno is any one of the PEBA fibers, TPEE fibers, TPU fibers, terylene, spandex, chinlon and polyolefin fibers; the weft yarns comprise one or more of PEBA fibers, TPEE fibers, TPU fibers, terylene, spandex, chinlon and polyolefin fibers; the weight ratio of PEBA fibers in the fabric is 18-100%; the PEBA fiber is a PEBA monofilament and is prepared from a PEBA elastomer through a melt spinning process.
2. The lightweight breathable upper fabric according to claim 1, characterized in that: the warp consists of 1 skein warp and 6 ground warps, both the warp and the weft are PEBA monofilaments, and the weight percentage of the PEBA fibers is 100%.
3. The lightweight breathable upper fabric according to claim 1, characterized in that: the ground warp consists of 1 PEBA monofilament and 5 TPU monofilaments, and the twisted warp is 1 TPU monofilament; the weft yarn consists of polyester multifilament; the weight percentages of the PEBA, the TPU and the polyester fiber are respectively 18 percent, 45 percent and 37 percent.
4. The lightweight breathable upper fabric according to claim 1, characterized in that: the ground warp consists of 4 PEBA monofilaments and 2 TPU monofilaments, and the twisted warp is 1 TPU monofilament; the weft yarn consists of polyester multifilament; the weight percentages of the PEBA, the TPU and the polyester fiber are respectively 50 percent, 27 percent and 23 percent.
5. The lightweight breathable upper fabric according to claim 1, characterized in that: the ground warp consists of 5 PEBA monofilaments and 1 TPU monofilament, and the twisted warp is 1 TPU monofilament; the weft yarn consists of polyester multifilament; the weight percentages of the PEBA, the TPU and the polyester fiber are respectively 70%, 16% and 14%.
6. A spinning process of light high-elastic fiber, which is used for processing PEBA fiber in claims 1-6, and comprises the following steps:
s1, drying the selected PEBA thermoplastic elastomer raw material, taking out the sample, cooling, and placing the sample in a dryer for later use, wherein the drying temperature is 110-150 ℃, and the drying time is 5-12 h;
s2, carrying out melt spinning on the dried PEBA thermoplastic elastomer, wherein the melt spinning temperature is 200-300 ℃, and the spinneret plate temperature is 220-320 ℃, and carrying out ice water molding, hot water stretching, hot air stretching, primary shaping, secondary shaping, oiling and slipping, and winding processes to obtain PEBA monofilaments, wherein the spinning length of each process section is 3-15m, and the traction speed is 30-250 m/min;
the PEBA elastomer takes one or more of long carbon chain nylon 11, long carbon chain nylon 12, nylon 56, nylon 6 and nylon 66 as hard segments and takes one or more of polytetrahydrofuran, polypropylene glycol, polyethylene glycol, copolyether glycol, polyether diamine and polysiloxane polyolefin as soft segments.
7. The spinning process of the light high elastic fiber according to claim 6, characterized in that: the Shore hardness of the PEBA elastomer is 20-72D, and the melt index is 0.5-25g/10 min.
8. The spinning process of the light high elastic fiber according to claim 6, characterized in that: the diameter of the PEBA monofilament is 0.10-0.3 mm.
9. The spinning process of the light high elastic fiber according to claim 6, characterized in that: the auxiliary agent can be added according to the requirement in the melt spinning process, wherein the antioxidant is as follows: antioxidant 1010, antioxidant 1098, antioxidant 1076 and antioxidant 168; the anti-thermal yellowing agent is: one or more of Figrep TAY-R adv, Figrep TAY and Figrep TAY-R new; the phenol yellowing resistant agent comprises: one or more of Figrep PY7021-LF and Figrep PYW; the processing aids are borane and silanes and their derivatives.
10. The spinning process of the light weight high elastic fiber according to any one of claims 6 to 9, characterized by comprising the following steps:
s1, drying the selected PEBA elastomer raw material for 10 hours at 110 ℃;
s2, carrying out melt spinning on the dried raw materials at 245 ℃, wherein the spinneret plate temperature is 275 ℃, and then respectively carrying out ice water molding, hot water stretching, hot air stretching, primary molding and secondary molding, oiling and smoothing, wherein the traction speed is 160m/min, so as to obtain PEBA monofilaments;
the raw material of the PEBA elastomer is a PEBA elastomer which takes nylon 11 as a hard segment and polytetrahydrofuran as a soft segment, the Shore hardness is 55D, and the density is 1.025g/cm 3 The melt index was 17g/10 min.
CN202210416469.8A 2022-04-20 2022-04-20 Light breathable vamp fabric and light high-elastic fiber spinning process Pending CN114908453A (en)

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