CN216330501U

CN216330501U - Multilayer PU composite fabric

Info

Publication number: CN216330501U
Application number: CN202122995077.5U
Authority: CN
Inventors: 洪圆圆
Original assignee: Shaoxing Keqiao Xiajing Textile Co ltd
Current assignee: Shaoxing Keqiao Xiajing Textile Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-04-19
Anticipated expiration: 2031-11-30

Abstract

The utility model discloses a multilayer PU composite fabric, which relates to the technical field of textiles, and the technical scheme is as follows: the air permeable layer and the PU layer are respectively compounded and bonded on two sides of the base layer, the base layer is provided with uniformly distributed air holes, the PU layer is provided with through holes which are in one-to-one correspondence with the air holes, and the aperture of each through hole is larger than that of each air hole; the edge of the through hole is fixedly bonded with the base layer. The breathable layer and the PU layer are respectively compounded and bonded on two sides of the base layer to form a three-layer sandwich structure; the PU layer is a high molecular compound, has good strength and waterproof performance, and is combined with the whole breathable structure of the fabric, so that the breathability of the fabric is improved, and the fabric has good comprehensive textile performance.

Description

Multilayer PU composite fabric

Technical Field

The utility model relates to the technical field of textiles, in particular to a multilayer PU composite fabric.

Background

The coating fabric is also called functional coating fabric or cloth, and is mainly characterized in that a layer of material with special functions is coated on the basis of the cloth by adopting a special process, and a layer of uniform covering rubber material is formed on the surface of the fabric to form the PU fabric.

The PU fabric adopts a simple high-molecular coating or a mode of compounding a prefabricated PU layer with a common fabric to form a surface layer similar to a leather on the surface of the fabric; due to the characteristics of the PU layer, the PU fabric has poor air permeability, so that the use effect of the PU fabric is poor; therefore, through holes penetrating through the two sides need to be formed on the surface of the PU fabric, so that the PU fabric can have a ventilation effect.

However, particle impurities or dust may penetrate through the two sides of the fabric through the through holes, so that the dustproof blocking effect of the fabric is poor, and the use effect of the fabric is affected.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide a multilayer PU composite fabric which has good ventilation effect, forms ventilation barrier and reduces the penetration of dust and impurities.

The technical purpose of the utility model is realized by the following technical scheme: a multi-layer PU composite fabric comprises a base layer, a breathable layer and a PU layer, wherein the breathable layer and the PU layer are respectively compounded and bonded on two sides of the base layer, the base layer is provided with uniformly distributed air holes, the PU layer is provided with through holes which correspond to the air holes one by one, and the aperture of each through hole is larger than that of each air hole; the edge of the through hole is fixedly bonded with the base layer.

The utility model is further configured in that the base layer is woven from composite antimicrobial yarn, and the composite antimicrobial yarn comprises an elastic yarn core and an antimicrobial coating layer.

The utility model is further configured that the yarn core comprises spandex fibers and polyester fibers which are intertwined and woven with each other.

The utility model is further configured that the coating layer comprises antibacterial fibers and flax fibers, and the antibacterial fibers and the flax fibers are spirally wound on the periphery of the yarn core in an alternating distribution manner.

The utility model is further provided that the air-permeable layer comprises a plurality of warp yarns and weft yarns which are woven in a warp and weft manner, the weft yarns comprise a plurality of weft yarn groups which are distributed at intervals, and the weft yarn groups comprise a first weft yarn and a second weft yarn.

The utility model is further provided that each group of weft yarn group comprises a first weft yarn and two second weft yarns, and the two second weft yarns are positioned at two side positions of the first weft yarn; the first weft is polyester yarn, and the second weft is bamboo fiber.

The utility model is further arranged that the gaps between the warp yarns are larger than the gaps between adjacent weft yarn groups, and that air-permeable gaps are formed between adjacent warp yarns and adjacent weft yarn groups.

The utility model is further arranged in such a way that one side of the PU layer facing the base layer is provided with a plurality of convex strips, one side of the base layer facing the PU layer is provided with recesses for accommodating the convex strips, and the convex strips are bonded in the recesses.

The utility model is further provided that the raised lines run vertically and horizontally and form a grid shape in a surrounding manner, so that the utility model has the following beneficial effects:

the fabric adopts the PU layer, the base layer and the breathable layer to be mutually compounded to form a three-layer sandwich structure, the base layer is provided with uniformly distributed breathable holes, the PU layer is provided with through holes, and when uniform breathable channels are formed on the fabric, the fabric is matched with the breathable layer, so that the whole fabric has a good breathable effect and also has a good blocking effect; the bleeder vent and the through-hole structure that the aperture differs also can carry out certain degree to the granule impurity and the dust that see through the hole and block, form certain separation effect.

The convex raised lines are arranged on one side of the PU layer facing the base layer, so that the strength and the stability of the PU layer and the whole fabric can be improved; the convex strips can be arranged in the vertical and horizontal type trend, the vertical and horizontal structures surround to form a net shape, and stress in the vertical and horizontal directions and all directions can be realized, so that the strength performance of the fabric is greatly improved.

Drawings

FIG. 1 is a schematic structural view of a multilayer PU composite fabric of the present invention;

FIG. 2 is a schematic structural view of a breathable layer of the present invention;

fig. 3 is a schematic structural view of the composite antibacterial yarn of the present invention.

Reference numerals: 1. a base layer; 2. a breathable layer; 21. warp yarns; 22. a weft yarn; 221. a first weft; 222. a second weft; 23. a ventilation gap; 3. a PU layer; 4. air holes are formed; 5. a through hole; 6. a convex strip; 7. recessing; 8. Compounding antibacterial yarn; 81. a yarn core; 811. spandex fibers; 812. polyester fiber; 82. a coating layer; 821. an antimicrobial fiber; 822. flax fiber.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

Referring to fig. 1-3, a multi-layer PU composite fabric is a multi-layer composite structure, and specifically includes a base layer 1, a breathable layer 2 and a PU layer 3, wherein the base layer 1 is a middle layer, and the breathable layer 2 and the PU layer 3 are respectively bonded to two sides of the base layer 1 in a composite manner to form a three-layer sandwich structure;

the PU layer 3 is a high molecular compound, has good strength and waterproof performance, but has poor air permeability; in order to improve the air permeability of the fabric, holes can be formed on the base layer 1 and the PU layer 3; specifically, air holes 4 are uniformly distributed on the base layer 1, through holes 5 are formed on the PU layer 3, and the positions of the through holes 5 correspond to the air holes 4 one by one, so that uniform air-permeable channels are formed on the fabric; the breathable layer 2 has a good breathable effect, so that the fabric has a good breathable effect, and the surface of the PU layer 3 outside the breathable layer has a certain cortex-like performance, so that the fabric is good in antifouling and wear-resistant effects and relatively stable in strength.

The aperture of the through hole 5 on the PU layer 3 is larger than that of the vent hole 4, and the base layer 1 is woven by fiber, so that the vent hole 4 with smaller aperture can be formed even if no hole is formed; and the small air holes 4 can also block particle impurities and dust penetrating through the holes to a certain degree, so that a certain blocking effect is formed.

The edge of the through hole 5 is fixedly bonded with the base layer 1, and the bonding position is near the periphery of the air hole 4; after bonding, the through hole 5 and the air hole 4 can be kept in a stable state, so that an unbonded gap is prevented from being formed between the two holes, and an interlayer which is easy to gather dust and impurities is generated; by adopting the annular bonding mode, the stability and the strength of the fabric can be improved, and the cleanness of holes can be kept.

In order to improve the cleanness and the health of the fabric, the base layer 1 of the fabric can be woven by the composite antibacterial yarns 8, wherein the composite antibacterial yarns 8 comprise a yarn core 81 and a coating layer 82; the yarn core 81 is positioned in the center of the yarn, has good elastic performance and forms a basic skeleton structure of the yarn; the covering layer 82 is located on the outer periphery of the yarn core 81, and has excellent antimicrobial properties, and the antimicrobial properties of the entire yarn and the base layer 1 can be improved.

Specifically, as shown in fig. 3, the yarn core 81 includes spandex fibers 811 and polyester fibers 812 which are intertwined and woven with each other, and the spandex and the polyester fibers 812 are intertwined and woven, so that the elasticity of the yarn core 81 is improved, the strength stability is good, and the overall serviceability of the yarn can be improved. The outer coating layer 82 comprises antibacterial fiber 821 and flax fiber 822, and the antibacterial fiber 821 can be nano silver fiber or bamboo charcoal fiber; the antibacterial fibers 821 and the flax fibers 822 are spirally wound on the periphery of the yarn core 81 in an alternating distribution manner, and can be circularly woven in a mode of adopting two antibacterial fibers 821 and one flax fiber 822, so that the antibacterial property of the yarn can be improved, and the yarn has good air permeability and moisture absorption effects.

The breathable layer 2 positioned on the other side of the fabric has good breathability, adopts a warp-weft weaving structure and specifically comprises a plurality of warp yarns 21 and weft yarns 22; the weft 22 comprises a plurality of weft 22 groups distributed at intervals, each weft 22 group comprises a weft I221 and a weft II 222, and the weft I221 and the weft II 222 are alternately distributed and woven; and each group of the weft yarns 22 is provided with a first weft yarn 221 and two second weft yarns 222, and the two second weft yarns 222 are positioned at two sides of the first weft yarn 221. The first weft 221 is made of polyester yarns and keeps the strength of the woven fabric, and the second weft 222 is made of bamboo fibers and keeps the good strength of the woven fabric, so that the woven fabric has a good air-permeable and moisture-absorbing effect, and the air-permeable effect of the air-permeable layer 2 is improved.

The weft yarns one 221 and two 222 in the weft yarn 22 groups are arranged relatively closely, and the gaps between the adjacent weft yarn 22 groups are slightly larger; and the clearance between the warp yarns 21 is larger than the clearance between the adjacent weft yarn 22 groups, the ventilation clearance 23 is formed between the adjacent warp yarns 21 and the adjacent weft yarn 22 groups, and fine holes which are uniformly distributed are formed on the surface of the ventilation layer 2 by the ventilation clearance 23 after weaving, so that the fabric has good ventilation effect.

In order to improve the overall strength stability of the fabric, a plurality of convex strips 6 can be arranged on one side of the PU layer 3 facing the base layer 1, and recesses 7 capable of accommodating the convex strips 6 are arranged on one side of the base layer 1 facing the PU layer 3; adopt the 6 structures of inboard hidden sand grip, can form the effect of similar strengthening rib in PU layer 3 inboard to improve the holistic stability of surface fabric. When the PU layer 3 is formed by compounding and bonding the base layers 1, the convex strips 6 are pressed into the surfaces of the base layers 1 to form the concave 7; the surface of the ridge 6 and the inner surface of the recess 7 are bonded to each other, and a stable bonded composite structure can be formed.

In order to improve the strength and stability of the PU layer 3 and the whole fabric, the raised lines 6 can be arranged in a longitudinal and transverse type trend, and a longitudinal and transverse structure is surrounded to form a net shape, so that the tensile strength performance of the fabric can be improved in the longitudinal and transverse directions; and the vertical and horizontal raised strips 6 are mutually matched, so that the stress in all directions can be jointly borne, and the strength performance of the fabric is greatly improved.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. The multilayer PU composite fabric is characterized by comprising a base layer (1), a breathable layer (2) and a PU layer (3), wherein the breathable layer (2) and the PU layer (3) are respectively compounded and bonded on two sides of the base layer (1), the base layer (1) is provided with uniformly distributed vent holes (4), the PU layer (3) is provided with through holes (5) which are in one-to-one correspondence with the vent holes (4), and the aperture of each through hole (5) is larger than that of each vent hole (4); the edge of the through hole (5) is fixedly bonded with the base layer (1).

2. The multi-layer PU composite fabric according to claim 1, wherein the base layer (1) is woven from composite antibacterial yarns (8), and the composite antibacterial yarns (8) comprise elastic yarn cores (81) and antibacterial coating layers (82).

3. The multi-layer PU composite fabric according to claim 2, wherein the yarn core (81) comprises spandex fibers (811) and polyester fibers (812) which are intertwined and woven.

4. The multi-layer PU composite fabric according to claim 2, wherein the coating layer (82) comprises antibacterial fibers (821) and flax fibers (822), and the antibacterial fibers (821) and the flax fibers (822) are spirally wound on the periphery of the yarn core (81) in an alternating distribution manner.

5. The multi-layer PU composite fabric according to claim 1, wherein the air-permeable layer (2) comprises a plurality of warp yarns (21) and weft yarns (22) woven in a warp and weft manner, the weft yarns (22) comprise a plurality of weft yarn (22) groups distributed at intervals, and the weft yarn (22) groups comprise a weft yarn I (221) and a weft yarn II (222).

6. The multi-layer PU composite fabric according to claim 5, wherein each group of weft yarns (22) comprises a weft yarn I (221) and two weft yarns II (222), and the two weft yarns II (222) are located at two sides of the weft yarn I (221); the first weft (221) is polyester yarn, and the second weft (222) is bamboo fiber.

7. A multilayer PU composite fabric according to claim 5, wherein the gaps between the warp yarns (21) are larger than the gaps between adjacent groups of weft yarns (22), and air-permeable gaps (23) are formed between adjacent warp yarns (21) and adjacent groups of weft yarns (22).

8. A multi-layer PU composite fabric according to claim 1, wherein the PU layer (3) has a plurality of protruding ribs (6) on one side facing the base layer (1), the base layer (1) has a plurality of recesses (7) on one side facing the PU layer (3) for receiving the ribs (6), and the ribs (6) are bonded to the recesses (7).

9. The multi-layer PU composite fabric according to claim 8, wherein the ribs (6) are oriented in longitudinal and transverse directions and form a grid around the ribs.