CN217733406U - Double knit fabric, laminated composite fabric and article - Google Patents

Abstract

The present application provides a dual knit fabric having a first side and a second side and comprising: warp yarns, first weft yarns, and second weft yarns, the warp yarns and first weft yarns being woven in a first weave pattern, the second weft yarns being inserted into the first weave pattern at a second side of the double woven fabric in a second weave pattern; and the second weft yarns are only on a second side of the double woven fabric. The present application also provides a laminated composite fabric and an article comprising the double woven fabric, which exhibit superior water resistance, breathability, lamination durability, and mechanical strength.

Description

Double knit fabric, laminated composite fabric and article

Technical Field

The present application relates to the field of textiles, and more particularly, to a double knit fabric having a specially designed knitting pattern, and a laminated composite fabric and an article including the same, which includes clothes, daily necessities, special field goods, or outdoor goods having excellent waterproofness, breathability, lamination durability, and mechanical strength.

Background

There are various demands for clothes, daily necessities, special field articles, and outdoor articles which are generally worn by people. Clothing or articles such as coats, backpacks, satchels, tents, sleeping bags, and the like, which are often in contact with both the user's body and the external wet and cold environment, are expected to be well protected from wind and water, from being transported or transmitted to the user's body, and from being uncomfortable with the human body due to the wet and cold conditions. It is also generally desirable that such garments or articles have at least some degree of breathability, so that perspiration from the interior of the garment or article can be transported to the exterior in the form of water vapor, to avoid the feeling of stuffiness or perspiration wetness to the user as much as possible, and to have a soft and comfortable feel to the user's side of the material. It is also an important requirement that such garments or articles should have mechanical strength, such as abrasion resistance, tear resistance, tensile strength, etc., to maximize their useful life without accidental cracking or damage during such periods.

In the art, it is difficult to use a single material while satisfying the above requirements, and it is common practice to combine fabric layers having different properties by using techniques such as adhesion, sewing or thermocompression bonding to form a laminated structure. For example, a typical laminate structure may include an outer wear resistant protective layer, a waterproof breathable layer, an innerliner layer, and an adhesive layer between the layers. However, the use of more layers entails a complicated production process, high production costs, insurmountable bonding strength and uniformity between the individual layers, a high probability of delamination or peeling between the individual layers during daily use causing damage to the garment or article, and the possibility of an undesirable decrease or increase in waterproof-breathable properties such as stitching, weld release or adhesives. It has therefore been desired to develop a novel technique that fulfills the systematic requirements of the prior art with respect to water repellency, breathability, lamination durability and mechanical properties in a simple and cost-effective manner.

Therefore, the inventor of the present application has developed a great deal of research work, developed a brand-new dual-woven fabric, and satisfied all the above-mentioned demands simultaneously, thereby completed the utility model discloses a research.

SUMMERY OF THE UTILITY MODEL

According to a first aspect of the present application, there is provided a double woven fabric having a first side and a second side and comprising:

a) Warp yarns;

b) A first weft yarn; and

c) A second weft yarn;

the warp yarns and first weft yarns are woven in a first weave pattern, the second weft yarns are inserted in the first weave pattern at a second side of the double woven fabric in a second weave pattern; and is

The second weft yarns are only on a second side of the double woven fabric.

According to a preferred embodiment of the present application, the second weft yarns are the same as the warp yarns and the first weft yarns, or the second weft yarns are different from the warp yarns and the first weft yarns. According to another preferred embodiment of the application, the warp yarns and the first weft yarns are made of a material which is at least partially hydrophobic, and the second weft yarns are made of a material which is at least partially hydrophilic. According to another preferred embodiment of the present application, the warp yarns and the first weft yarns are made of a hydrophobic material and the second weft yarns are made of a hydrophilic material. According to another preferred embodiment of the present application, the first weave pattern is different from the second weave pattern.

A second aspect of the present application provides a laminated composite fabric comprising the double knit fabric of the present application, optionally further comprising a barrier layer, to which the double knit fabric may be bonded by an adhesive layer.

A third aspect of the present application provides an article of manufacture that is a garment, tent, bivy bag, sack, backpack, handbag, travel bag, sleeping bag, or covering, comprising within the article the double woven fabric of the present application or the laminated composite fabric of the present application.

Drawings

<xnotran> . </xnotran> It is to be noted, however, that the embodiments illustrated in the drawings and described in the following detailed description are only preferred embodiments of the present application, and the scope of the present application is defined by the appended claims rather than by the limitations set forth herein.

Fig. 1 shows a photograph of a front side (first side) of a double woven fabric according to one embodiment of the present application;

FIG. 2 shows a photograph of the back side (second side) of the double knit fabric of the embodiment of FIG. 1;

FIG. 3 is a fragmentary detail labeled view of FIG. 2;

FIG. 4 shows a cross-sectional view of a laminated composite fabric according to one embodiment of the present application;

FIG. 5 shows a schematic view of a garment comprising the double knit fabric of the present application;

FIG. 6 shows a schematic view of a backpack including the double knit fabric of the present application;

fig. 7 shows a schematic view of a tent including the double knit fabric of the present application.

Detailed Description

The "ranges" disclosed herein are in the form of lower and upper limits. There may be one or more lower limits, and one or more upper limits, respectively. The given range is defined by the selection of a lower limit and an upper limit. The selected lower and upper limits define the boundaries of the particular range. Within the scope of this application, any lower limit specifically listed may be combined with any upper limit to form a range. For example, if ranges of 60-120 and 80-110 are listed for a particular parameter, it is understood that ranges of 60-110 and 80-120 are also contemplated. Further, if the minimum range values 1 and 2 are listed, and if the maximum range values 3,4 and 5 are listed, the following ranges are all contemplated: 1-3, 1-4, 1-5, 2-3, 2-4, and 2-5.

In this application, unless otherwise stated, the numerical range "a-b" represents a shorthand representation of any combination of real numbers between a and b, where a and b are both real numbers. For example, a numerical range of "0 to 5" indicates that all real numbers between "0 to 5" have been listed herein, and "0 to 5" is only a shorthand representation of the combination of these numbers.

In the present application, all embodiments and preferred embodiments mentioned herein may be combined with each other to form new solutions, if not specifically stated.

In the present application, all the technical features mentioned herein as well as preferred features may be combined with each other to form new technical solutions, if not specifically stated.

In the present application, all steps mentioned herein may be performed sequentially or randomly, if not specifically stated, but preferably sequentially. For example, the method comprises steps (a) and (b), meaning that the method may comprise steps (a) and (b) performed sequentially, and may also comprise steps (b) and (a) performed sequentially. For example, reference to the process further comprising step (c) means that step (c) may be added to the process in any order, for example, the process may comprise steps (a), (b) and (c), may also comprise steps (a), (c) and (b), may also comprise steps (c), (a) and (b), etc.

In the present application, the term "comprising" as used herein means either an open type or a closed type unless otherwise specified. For example, the term "comprising" may mean that other components not listed may also be included, or that only listed components may be included.

According to one embodiment of the present application, there is provided a double woven fabric having a first side and a second side and comprising: a) Warp yarns; b) A first weft yarn; and c) a second weft yarn; the warp yarns and first weft yarns are woven in a first weave pattern, the second weft yarns are inserted into the first weave pattern at a second side of the double woven fabric in a second weave pattern; and the second weft yarns are only on a second side of the double woven fabric. In one embodiment of the present application, the second weft yarn differs from the warp yarn and the first weft yarn in one or more aspects, such as differing from the warp yarn and the first weft yarn in one or more of: size (e.g., in Denier), yarn form (e.g., single strand, plied yarn, twisted yarn, etc.), yarn material type, and combinations thereof. According to another embodiment of the present application, the second weft yarn is the same yarn as one or both of the warp yarn and the first weft yarn.

According to another embodiment of the application, the warp yarns and the first weft yarns are made of the same material and the second weft yarns are made of a different material than the warp yarns and the first weft yarns. According to a further embodiment of the present application, the second weft yarns are more hydrophilic than the warp yarns and the first weft yarns. According to a preferred embodiment of the present application, the warp yarns and the first weft yarns are made of a hydrophobic material and the second weft yarns are made of a hydrophilic material. According to a preferred embodiment of the present application, the warp yarns and the first weft yarns are made of the same hydrophobic material and the second weft yarns are made of a hydrophilic material.

According to one non-limiting embodiment of the present application, the warp yarns and the first weft yarns may be made of the same material, for example may be made of a composite material which may comprise a polymer matrix and a hydrophobic additive dispersed as filler in the polymer matrix. Non-limiting examples of the polymer matrix include polyamide, polyimide, polyester, polycarbonate, poly (meth) acrylate, poly (meth) acrylic acid, polyether, polyphenylene ether, nylon, polyvinyl pyrrolidone, polyvinyl alcohol, polymaleic anhydride, regenerated cellulose, cellulose acetate, rayon, acetate, aramid, cotton, wool, silk, flax, jute, or mixtures or copolymers of the above materials. The hydrophobic additive may be selected from the following materials: fluoropolymers or expanded fluoropolymers such as polytetrafluoroethylene, expanded polytetrafluoroethylene, polyhexafluoropropylene, perfluoroethylene-propylene copolymers, tetrafluoroethylene-ethylene copolymers, tetrafluoroethylene-nitrosotrifluoromethane copolymers, polyvinylidene fluoride, polychlorotrifluoroethylene, chlorotrifluoroethylene-ethylene copolymers or chlorotrifluoroethylene-vinylidene fluoride copolymers; polyolefins, such as polyethylene, polyvinyl chloride, polypropylene, polybutylene, polystyrene, or polyethylene-propylene copolymers; silicones such as polydimethylsilane or fluorosilicone; or mixtures or copolymers of the above. According to one embodiment of the present application, the hydrophobic additive may be present in an amount ranging from 0.1 to 50 wt%, such as from 1 to 45 wt%, or from 5 to 40 wt%, or from 10 to 35 wt%, or from 15 to 30 wt%, or from 20 to 25 wt%, or within a range of values obtained by combining any two of the above values with each other, based on the total weight of the composite.

According to another non-limiting embodiment of the present application, the warp yarns and the first weft yarns may be made entirely of hydrophobic material, e.g. the warp yarns and the first weft yarns are made of the same or different hydrophobic material. According to a separate embodiment of the present application, the warp yarns and the first weft yarns are made of a material selected from the group consisting of: fluoropolymers or expanded fluoropolymers such as polytetrafluoroethylene, expanded polytetrafluoroethylene, polyhexafluoropropylene, perfluoroethylene-propylene copolymers, tetrafluoroethylene-ethylene copolymers, tetrafluoroethylene-nitrosotrifluoromethane copolymers, polyvinylidene fluoride, polychlorotrifluoroethylene, chlorotrifluoroethylene-ethylene copolymers or chlorotrifluoroethylene-vinylidene fluoride copolymers; polyolefins, such as polyethylene, polyvinyl chloride, polypropylene, polybutylene, polystyrene, or polyethylene-propylene copolymers; silicones such as polydimethylsilane or fluorosilicone; polyamides, polyimides, polyesters, polycarbonates, poly (meth) acrylates, poly (meth) acrylic acids, polyethers, polyphenylene ethers, nylons, polyvinylpyrrolidone, polyvinyl alcohol, polymaleic anhydride, regenerated cellulose, cellulose acetate, rayon, acetate, aramids, cotton, wool, silk, flax, jute; a hydrophobically modified material of the above materials, or a mixture or copolymer of the above materials. In any of the embodiments herein, the material (preferably a hydrophobic material, more preferably a hydrophobic material as described above) for the warp yarns and the first weft yarns is a known material, such as a known commercially available material.

According to one embodiment of the present application, the second weft yarns may be made of a material having a lower hydrophobicity than the warp yarns and the first weft yarns, for example, a hydrophilic material, which may include, for example, polyamide, polyimide, polyester, polycarbonate, poly (meth) acrylate, poly (meth) acrylic acid, polyether, polyphenylene ether, nylon, polyvinylpyrrolidone, polyvinyl alcohol, polymaleic anhydride, regenerated cellulose, cellulose acetate, rayon, acetate, aramid, cotton, wool, silk, flax, jute, or a mixture or copolymer of the foregoing materials. In any of the embodiments herein, the material (preferably hydrophilic material, more preferably the hydrophilic material described above) used for the second weft yarns is a known material, such as a known commercially available material.

According to a particularly preferred embodiment of the application, the warp yarns and the first weft yarns are made of a composite material comprising a polyamide matrix and a hydrophobic additive as filler dispersed in the polyamide matrix, while the second weft yarns are made of polyamide, wherein the polymer matrix in the composite material and the polyamide in the second weft yarns are preferably identical.

According to one embodiment of the present application, the double woven fabric comprises 25-70% by number of the warp yarns, 20-70% by number of the first weft yarns and 5-50% by number of the second weft yarns, based on the total number of warp yarns, first weft yarns and second weft yarns (i.e. the total number of yarn counts) in the double woven fabric. For example, the percentage of the number of warp yarns (the number of warp yarns) may be 30-65% by number, or 35-60% by number, or 40-55% by number, or 45-50% by number, or within a range of values obtained by combining any two of the following values, based on the total number of warp yarns, first weft yarns, and second weft yarns in the double woven fabric being 100%: 25, 28, 30, 32, 35, 38, 40, 42, 45, 48, 50, 52, 55, 58, 60, 62, 65, 68, 70% by number; the percentage of the number of first weft yarns (the number of first weft yarns) may be 25-65% by number, or 30-60% by number, or 35-55% by number, or 40-50% by number, or within a range of values where any two of the following values are combined with each other: 20 amount%, 22 amount%, 25 amount%, 28 amount%, 30 amount%, 32 amount%, 35 amount%, 38 amount%, 40 amount%, 42 amount%, 45 amount%, 48 amount%, 50 amount%, 52 amount%, 55 amount%, 58 amount%, 60 amount%, 62 amount%, 65 amount%, 68 amount%, 70 amount%; the percentage of the number of second weft yarns (the number of second weft yarns) may be 5-50% by number, or 10-45% by number, or 15-40% by number, or 20-35% by number, or 25-30% by number, or within a range of values where any two of the following values are combined with each other: 5 amount%, 7 amount%, 10 amount%, 12 amount%, 15 amount%, 18 amount%, 20 amount%, 22 amount%, 25 amount%, 28 amount%, 30 amount%, 32 amount%, 35 amount%, 38 amount%, 40 amount%, 42 amount%, 45 amount%, 48 amount%, 50 amount%.

According to one embodiment of the present application, in the double woven fabric the number ratio of the warp yarns to the first weft yarns is 5:1 to 1:5, such as 4:1 to 1:4, or 3:1 to 1:3, or 2:1 to 1:2, or 1:1 to 1.5, or within a range in which any two of the above values are combined with each other. According to one embodiment of the application, the number ratio of the second weft yarns to the first weft yarns is 1.

According to one embodiment of the present application, the warp yarns, the first weft yarns and/or the second weft yarns are monofilament yarns, multifilament yarns or a combination thereof, by "combination thereof" is meant a part being monofilament yarns and a part being multifilament yarns; in which a multifilament yarn is formed by twisting a plurality of monofilament yarns together or simply by laying a plurality of monofilament yarns in parallel without twisting. The dimensions of each of the warp yarns, first weft yarns and second weft yarns may be generally expressed in denier, which represents the mass (grams) of a 9000 meter length of yarn, a measure of the fineness of the yarn. In some embodiments, the denier of each of the warp yarns, the first weft yarns, and the second weft yarns may independently be from 3-1000D, or from 3-900D, or from 3-800D, or from 8-700D, or from 3-600D, or from 3-500D, or from 3-400D, or from 4-400D, or from 5-400D, or from 6-400D, or from 7-400D, or from 8-400D, or from 9-400D, or from 10-400D, or from 11-400D, or from 12-400D, or from 15-400D, or from 20-400D, or from 25-400D, or from 30-400D, or from 35-400D, or from 40-400D, or within a range obtained by combining any two of the foregoing values. In the present application, the diameters of the warp yarns, the first weft yarns and/or the second weft yarns are all visible to the naked eye.

According to an embodiment of the present application, the first pattern formed by weaving the warp yarn and the first weft yarn may be a plain weave, a twill weave, a satin weave, any combination thereof, or any other weaving pattern, for example, any scattered point, straight line, curve, image, character, polygon, or irregular pattern; the weave may have different patterns at different locations of the fabric, such as a pattern having a plain weave, a twill weave, a satin weave, and any combination thereof as described above, at most locations, while the scatter, the straight lines, the curves, the images, the letters, the characters, the polygons, or the irregular figures are locally arranged.

The second weaving pattern of the second weft yarn can be plain weave, twill weave, satin weave and any combination thereof, and can also be any other weaving pattern, such as any scattered point, straight line, curve, image, character, polygon or irregular figure formed by weaving; the weave may have different patterns at different locations of the fabric, such as a pattern having a plain weave, a twill weave, a satin weave, and any combination thereof as described above, at most locations, while the scatter, the straight lines, the curves, the images, the letters, the characters, the polygons, or the irregular figures are locally arranged. In the present application, when it is described that the second weaving pattern of the second weft yarn is plain, twill, satin and any combination thereof, it means the weaving pattern of the second weft yarn with respect to the warp yarns in the first pattern, that is to say that the second weft yarn and the warp yarns in the first pattern constitute plain, twill, satin and any combination thereof. According to a preferred embodiment of the present application, in the second weaving pattern of the second weft yarns, all the second weft yarns are parallel to each other and to the first weft yarns; more preferably, in the second weaving pattern of the second weft yarns, all the second weft yarns are parallel to each other and to the first weft yarns, and the second weft yarns have the same pitch therebetween; most preferably, in the second weave pattern of the second weft yarns, all the second weft yarns are parallel to each other and to the first weft yarns, with the same spacing between the second weft yarns, and each second weft yarn is positioned to overlap the first weft yarn below it.

Fig. 1 to 3 show a double woven fabric according to an embodiment of the present application. Figure 1 shows the front (first side) of the fabric with the warp yarns and first weft yarns woven in a plain weave first weave pattern, with only the warp yarns and first weft yarns shown on the front, at a yarn count ratio of substantially 1:1. The first side may be directed towards the inside or outside of the final product, depending on the intended target use. For example, according to one embodiment, in the final product, the front side faces the environment, opposite the side that is in direct contact with the user.

Figure 2 shows the reverse side (second side) of the fabric with the second weft yarns inserted in the first pattern on that side in a second pattern. Fig. 3 shows a detail of fig. 2, in particular, for the sake of clarity, in a part of the area of fig. 3 all warp threads exposed on the second side surface are marked with a colour block, it being seen that first weft threads are woven with the warp threads from orthogonal directions, one second weft thread is provided for every four first weft threads, which second weft threads extend in the transverse direction in the same direction as the corresponding first weft threads below it, for example the second weft thread may be located above the first weft thread, preferably the second weft thread may overlap the first weft thread below it and be woven with the warp threads with a period of weaving once for every four warp threads. As a result of this weaving of the second weft threads, one second weft thread is present on the second side every fourth first weft thread.

It is to be noted that although fig. 1-3 show a weaving pattern according to an embodiment of the present application, other weaving patterns may be used, for example, one second weft yarn may be provided for every n first weft yarns, where n is an integer from 1 to 20, such as an integer 1, 2, 3,4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 or 20; the second weft yarns may be woven with the warp yarns every m warp yarns, where m is an integer from 1 to 20, such as an integer 1, 2, 3,4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20. The first weave pattern and the second weave pattern may be woven in a weave manner different from a plain weave, such as twill weave, satin weave, and any combination thereof, or may be any other weave pattern, such as a weave forming any of scattered dots, straight lines, curved lines, images, characters, polygons, or irregular figures.

The fabrics of the present application can be manufactured using conventional weaving equipment and techniques known in the art, such as shuttle looms, flat-bed knitting machines, circular machines, warp knitting machines, weft knitting machines, and the like.

According to one embodiment of the present application, a laminated composite fabric is formed by bonding a barrier layer to either or both sides of the double knit fabric of the present application by sewing, heat pressing, heat fusing, or adhesive. According to one embodiment, the barrier layer is bonded to the first side of the double knit fabric using an adhesive. According to another embodiment, an adhesive is used to bond the barrier layer to the second side of the double knit fabric. According to another embodiment, two barrier layers are bonded to the first and second sides of the double knit fabric using an adhesive, respectively. According to a preferred embodiment, in an article using said double knitted fabric, the first side of said double knitted fabric is the side of the article facing the outside environment and the second side thereof is the side facing the inside, said barrier layer being provided only on said second side or on both the first and the second side. Fig. 4 shows a laminated composite fabric according to an embodiment of the present application, the adhesive layer may be included between the double woven fabric and the barrier layer in a discontinuous manner, such as in the form of regularly discrete dots, parallel threads or a regular checkerboard, to avoid disrupting the overall air permeability of the laminated composite fabric.

According to one embodiment of the present application, the barrier layer may be a waterproof breathable layer, such as a monolithic breathable polyurethane film, polyester, film, polyether film, porous (e.g., microporous) polyethylene or polypropylene film, expanded polyethylene or expanded polytetrafluoroethylene film. The waterproof breathable barrier layer may be disposed on the first side or the second side of the double-woven fabric as needed to help transport sweat generated from the body to the outside in the form of water vapor to keep the body of the user dry and warm while effectively blocking the passage of liquid water, microorganisms, dirt and garbage of the external environment.

When the laminated composite fabric is used, another layer can be added according to the needs, for example, an inner liner layer made of soft fabrics such as cotton, wool, silk and chemical fiber is additionally added on the side facing a user, and a mechanical protection layer (such as a metal wire mesh or a Kevlar cut-proof layer), a reflection layer, a decoration layer or additionally printed patterns, trademarks, characters and the like are added on the side facing the external environment. Fig. 5-7 show schematic views of garments (jackets), backpacks and tents using the laminated composite fabric of the present application, but the uses of the double woven fabric and laminated composite fabric of the present application are not limited thereto, and include all those that can be used and thereby benefit from the fabric and laminated composite fabric of the present application in terms of waterproofness, breathability, lamination durability, mechanical strength and manufacturing process simplification, particularly for use in outdoor, colder, harsh environments, non-limiting examples of which include but are not limited to: clothing (in particular coats, work clothes, protective clothing), tents, bivouac bags, backpacks, handbags, travel bags, sleeping bags or coverings.

Examples

For a better understanding of the present application, reference is made to the following examples, which are set forth to illustrate, but are not to be construed to limit the present application. The following examples are provided for further illustration of the present application and are not to be construed as limiting the present application, and any insubstantial modifications and adaptations of the concepts and solutions of the present application are intended to be covered by the scope of the present application.

Example 1

In this example, the warp yarns, first weft yarns and second weft yarns used are semi-extended yarns (POY) from Far east advanced fiber optics Co., ltd, where the warp yarns are 40D/34F FD POY

PFC-free Durable Waterproof (DWR) nylon 6,6 yarn, the first weft yarn is 40D/34F FD POY

The non-PFC DWR nylon 6,6 yarn, the second weft yarn is 40D/34F FD POY nylon 6,6 yarn, and the second weft yarn is not subjected to hydrophobic treatment. POY is subjected to a drawing and false twist texturing process using a drawing and false twist texturing machine before use to form a drawn false twisted yarn (DTY), the warp DTY is further twisted before use, and the first weft yarn and the second weft yarn are not twisted. The double woven fabric of the present application shown in fig. 1 to 3, which are the same embodiment as that shown in fig. 1 to 3, was produced by weaving of creative fabrics limited (IdeaTex co.ltd) using a water jet loom. As shown in fig. 1, at the first side of the fabric, the warp yarns and the first weft yarns are woven in a plain weave first weave pattern, with only the warp yarns and the first weft yarns being shown on the front side, at a yarn number ratio of 1:1. As shown in fig. 2 and 3, on the second side of the fabric, second weft yarns are woven with the warp yarns from the orthogonal direction, one second weft yarn is provided every four first weft yarns, the second weft yarns extend in the transverse direction in a direction overlapping with the underlying corresponding first weft yarn, and are woven with the warp yarns in a cycle of one weaving every four warp yarns. It can be seen that in this embodiment all the second weft yarns are parallel to each other and each second weft yarn coincides with its underlying first weft yarn. The double knit fabric had a basis weight of 69 g/m ² 。

A polyurethane adhesive is used to form a uniformly arranged pattern of discrete dots on the second side of the laminated composite fabric, to which an ePTFE barrier film (for information about this barrier film see CN103037722 a) is adhered, forming the laminated composite fabric of the present application.

Comparative example 1

In this comparative example 1, the procedure of example 1 described above was repeated except that the yarn as the second weft in example 1 was used as the warp and weft in weaving the fabric, and a double woven fabric was manufactured. And a laminated composite fabric was manufactured using the double-woven fabric according to the procedure of example 1.

Example 2: performance characterization of the dual knit fabrics of example 1 and comparative example 1 (with the barrier film not yet applied thereto) and the laminated composite fabrics (with the barrier film already applied thereto)

A. The water repellency of the double-woven fabrics produced in example 1 and comparative example 1 above, to which the barrier film has not been applied, before and after washing was characterized according to international standard method ISO4920:2012 (determination of the moisture resistance of the textile surface: spray test). Specifically, according to the above international standard method, a fabric sample was mounted on a snap ring, which was formed by an outer ring and an inner ring that were tightly fitted, the outer ring having an inner diameter of 155 mm and the inner ring having an outer diameter of 155 mm, and the outer ring and the inner ring were engaged with each other, and the fabric sample was tightly fixed. The center of the sample is positioned 150 mm under a nozzle of a water spraying device, 250 ml of distilled water is filled in the water spraying device, a water outlet of the nozzle is a convex plate, 19 holes with the diameter of 0.86 mm are uniformly distributed on the convex plate, and 250 ml of distilled water with the temperature of 20 ℃ is sprayed on the sample through the nozzle within 25 seconds or so. After spraying was complete, the fabric samples were observed for appearance, compared to the standard grading pictures associated with the equipment and graded on a scale of 0 to 5, with 0 being the worst and 5 being the best. For each fabric tested, three samples were taken from different positions on the fabric for parallel testing, and the results of the three parallel tests were averaged to obtain the final result of the fabric tested.

Each fabric to be tested was first sampled and its water repellency was measured according to the above procedure as "initial water repellency" and then subjected to a washing treatment according to international standard ISO6330:2012 (4N, roller dry, 40 ℃), and the washed fabric was sampled and its "water repellency after washing" was measured according to the above procedure.

The test results are summarized in Table 1 below.

Table 1: water repellency of samples of example 1 and comparative example 1 before and after washing treatment

	Example 1	Comparative example 1
			Initial water repellency	Grade 5	Level 0
Water repellency after 100 wash cycles	4 stage	Grade 0

B. Applicants also measured the laminate durability of the laminated composite fabrics of example 1 and comparative example 1 (having the barrier film applied thereto) using the following procedure: the Dynawash series washing machine is modified so that the timer of the washing machine can run for a designated time. Wash durability was characterized in the following manner: the samples of laminated composite fabric were placed in the above modified Dynawash washing machine set to a heavy duty, mild heavy duty cycle, washed without detergent, set for the length of time required for the washing machine to run, and then removed from the washing machine and dried under ambient conditions to see if delamination or peeling of the sample occurred, thereby investigating the durability of the laminate of the samples.

The results are summarized in Table 2 below.

Table 2: water repellency of samples of example 1 and comparative example 1 before and after washing treatment

	Example 1	Comparative example 1
			Laminate durability	>300 hours	>300 hours

As can be seen from the above test results, the double-woven fabric of example 1 of the present application has very excellent water resistance as compared to comparative example 1, and the laminated composite fabric prepared in example 1 exhibits laminate durability comparable to that of comparative example 1.

Claims (12)

1. A double woven fabric having a first side and a second side and comprising:

a) Warp yarns;

b) A first weft yarn;

c) A second weft yarn;

wherein the warp yarns and first weft yarns are woven in a first weave pattern and the second weft yarns are inserted in the first weave pattern on a second side of the double woven fabric in a second weave pattern; and is

The second weft yarns are only on a second side of the double woven fabric; and is provided with

The warp yarns and the first weft yarns are at least partially hydrophobic and the second weft yarns are at least partially hydrophilic.

2. The double woven fabric of claim 1, wherein said second weft yarns are the same as said warp yarns and first weft yarns or said second weft yarns are different from said warp yarns and first weft yarns.

3. A double woven fabric as claimed in claim 1 or 2, wherein said double woven fabric comprises 25-70% by number of said warp yarns, 20-70% by number of said first weft yarns and 5-50% by number of said second weft yarns, based on the total number of said warp yarns, first weft yarns and second weft yarns in said double woven fabric.

4. The double woven fabric of claim 1 or 2, wherein in said double woven fabric the ratio of the number of warp yarns to said first weft yarns is 5:1 to 1:5 and the ratio of the number of said second weft yarns to said first weft yarns is 1.

5. A double woven fabric as claimed in claim 1 or 2, wherein said warp yarns, first weft yarns and second weft yarns are each independently selected from monofilament yarns, multifilament yarns and combinations thereof.

6. The double woven fabric of claim 1 or 2, wherein said first weave pattern is selected from the group consisting of plain, twill, satin, and any combination thereof; and/or

The second weave pattern is selected from the group consisting of plain, twill, satin, and combinations thereof.

7. A laminated composite fabric comprising the double knit fabric of any one of claims 1-6 bonded to a barrier layer.

8. The laminated composite fabric of claim 7, wherein the barrier layer is a waterproof breathable barrier layer.

9. The laminated composite fabric of claim 7 or 8, wherein the double knit fabric is bonded to the barrier layer by an adhesive layer.

10. The laminated composite fabric of any one of claims 7-8, wherein the double woven fabric is bonded to the barrier layer by an adhesive layer comprising a discontinuous point or continuous pattern of adhesive.

11. An article comprising the laminated composite fabric of any one of claims 7-10.

12. The article of claim 11, wherein the article is a garment, tent, bivy bag, pouch, backpack, handbag, travel bag, sleeping bag, or cover.

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