Woven fabric

Abstract

To provide a woven fabric having excellent color fastness to rubbing in the woven fabric of a warp double structure in which warp yarns and weft yarns constituting a surface structure comprise polyester fibers and warp yarns constituting a back structure comprise cellulosic fibers.SOLUTION: In a woven fabric having a warp double structure in which warps and wefts constituting a surface structure are composed of polyester fibers and warps constituting a back structure are composed of cellulosic fibers, only the polyester fibers are dyed with a disperse dye. The warp constituting the back texture is preferably one or more selected from a fiber made of cotton and a mixed fiber containing cotton.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a double-woven warp fabric in which the warp and weft threads constituting the front weave are made of polyester fibers and the warp threads constituting the back weave are made of cellulosic fibers, and which has excellent abrasion fastness. [Background technology]

[0002] Conventionally, double-weave fabrics have been used for clothing such as workwear.

[0003] Patent Document 1 describes a weft double weave fabric, in which the weft yarns constituting the front weave are composite fibers in which different types of polyester polymers are bonded together in a side-by-side or eccentric core-sheath configuration along the fiber length direction, and the weft yarns constituting the back weave are spun yarns, and which simultaneously satisfy the following conditions (1) to (4): (1) The elongation rate in the weft direction measured by JIS L1096 Elongation Rate Method B (load 14.7N) is 13% or more. (2) The sum of the elongation in the weft direction and the elongation in the warp direction measured by JIS L1096 Elongation Method B (load 14.7N) is 15% or more. (3) When washed once using the JIS L1096 F-2 method (medium temperature washer method; 60°C x 30 minutes) and then tumble dried, the dimensional change in both the warp and weft directions is +3% to -3%. (4) The mean deviation (SMD) of the surface roughness of the woven fabric measured by the KES-F system in the unstretched state is 6.5 μm or less.

[0004] The fabric of Patent Document 1 can provide a weft-double woven fabric that has appropriate stretchability, shape stability, and surface smoothness, making it suitable for use in uniforms.

[0005] Patent Document 1 does not consider the resistance to rubbing. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2023-68667 Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention aims to provide a double-woven warp fabric having excellent resistance to friction, in which the warp and weft threads constituting the front weave are made of polyester fibers and the warp threads constituting the back weave are made of cellulosic fibers. [Means for solving the problem]

[0008] As a result of extensive research, the present inventors have discovered that in a double warp weave fabric in which the warp and weft yarns constituting the face weave are made of polyester fibers and the warp yarns constituting the back weave are made of cellulosic fibers, a fabric having excellent friction fastness can be obtained by dyeing only the polyester fibers with a disperse dye, and have completed the present invention.

[0009] The present invention is a double-woven warp fabric in which the warp and weft threads constituting the front structure are made of polyester fibers, and the warp threads constituting the back structure are made of cellulosic fibers, and is based on the following technology.

[0010] (1) A double-woven warp fabric in which the warp and weft threads constituting the front structure are made of polyester fibers and the warp threads constituting the back structure are made of cellulosic fibers, and only the polyester fibers are dyed with disperse dyes.

[0011] (2) The woven fabric of (1), wherein the cellulosic fiber is one or more selected from the group consisting of cotton fibers and mixed fibers containing cotton.

[0012] (3) The fabric of (1) or (2), wherein the warp double weave is a three-way twill, four-way twill, or five-way twill. [Effects of the Invention]

[0013] According to the present invention, a double warp weave fabric having a front weave in which the warp and weft yarns are made of polyester fibers and a back weave in which the warp yarns are made of cellulosic fibers can be provided, which has excellent resistance to friction. DETAILED DESCRIPTION OF THE INVENTION

[0014] The woven fabric of the present invention is a double-woven warp fabric in which the warp and weft threads constituting the front weave are made of polyester fibers, and the warp threads constituting the back weave are made of cellulosic fibers, and only the polyester fibers are dyed with a disperse dye.

[0015] The polyester fibers used for the warp and weft yarns constituting the surface structure of the woven fabric of the present invention may be spun yarns or filament yarns, and in order to impart high stretchability in the weft direction of the fabric, it is preferable to use spun yarns of polyester fibers for the warp yarns constituting the surface structure and highly crimped polyester filament yarns for the weft yarns constituting the surface structure.

[0016] The fineness of the polyester fiber is preferably 5 to 60 British cotton count in the case of spun yarn, and 50 to 600 denier in the case of filament yarn.

[0017] As the cellulosic fiber used for the warp threads constituting the back structure of the fabric of the present invention, cotton fiber or a blend of polyester and cotton fiber can be used.

[0018] The fineness of the cellulosic fibers is preferably 5 to 60 count in British cotton count.

[0019] In the present invention, the above-mentioned woven fabric is a woven fabric in which only the polyester fibers used for the warp and weft threads constituting the surface structure are dyed with disperse dyes.

[0020] Textile dyeing is carried out by continuous dyeing, dip dyeing, and printing. Continuous dyeing is a thermosol method in which a dye dispersion liquid made by adding disperse dyes and sizing agents to an aqueous medium to a predetermined concentration is applied to undyed textile, which is then dried and then dry-heat treated at a high temperature to fix the disperse dye.

[0021] In addition to disperse dyes and sizing agents, dispersants and vat dyes for dyeing cotton fibers may also be added to the dye dispersion. The dye dispersion liquid can be applied to the fabric in any amount possible. Preferably, a padder is used that can uniformly squeeze the fabric with a predetermined pressure between multiple rolls after immersing the fabric in the dye dispersion liquid.

[0022] The heat source of the dryer for the fabric to which the dye dispersion liquid has been applied is not limited, and any conventionally known dryer, such as an air dryer, a high-frequency dryer, or an infrared dryer, can be used as appropriate.

[0023] As for the mechanical structure, a hot flue type dryer, cylinder dryer, tenter dryer, tumble dryer, net conveyor type dryer, etc. can be used, but a dryer that can heat and dry with a non-contact heater is preferable to prevent uneven dye adhesion during drying.

[0024] The temperature and time for dry heat treatment of dye-adhered dried fabric are adjusted depending on the dye's migration and sublimation fastness. For example, the treatment is carried out at 130°C to 220°C for a few seconds to a few minutes.

[0025] The continuous dyeing is not limited to the thermosol method, but the disperse dye can also be fixed by utilizing a conventionally known method, for example, a high pressure steaming method or a HT steaming method.

[0026] After the dye fixation, a step such as reduction washing is carried out as necessary, followed by a drying step.

[0027] The washing machine may be an open soaper, a liquid jet processing machine, etc. The drying machine may have any heat source and structure.

[0028] Immersion dyeing is carried out by immersing undyed fabric in a bath containing a predetermined amount of disperse dye dispersed in an aqueous medium at a high temperature, after which a pH adjuster, a dispersing and leveling agent, etc. are added as necessary.

[0029] It is preferable to carefully select dyeing conditions, particularly conditions such as dyeing temperature, dyeing time, and pH of the dye bath, taking into consideration dyeing properties such as the type of polyester fiber and differences in dye migration of disperse dyes, in order to suppress changes in physical properties after dyeing.

[0030] The dyeing temperature is, for example, 90°C to 150°C, preferably 100°C to 135°C, and more preferably 115°C to 135°C.

[0031] The dyeing time is, for example, 10 to 120 minutes, preferably 30 to 90 minutes, after the bath temperature reaches the target temperature. The pH of the dye bath is preferably set between 4 and 8.

[0032] After dye fixation, the washing and drying steps are carried out in the same manner as in the thermosol method.

[0033] Next, the method for producing the woven fabric of the present invention will be described in detail.

[0034] <Weaving> The above warp and weft threads are used to weave a double warp weave fabric. The warp thread density is 80 threads / inch to 200 threads / inch on the grey fabric, and the weft thread density is 40 threads / inch to 100 threads / inch on the grey fabric.

[0035] <Staining> The dyeing can be carried out by the above-mentioned known methods. [Example]

[0036] The present invention will be specifically explained below with reference to examples, but the present invention is not limited to the following examples.

[0037] Example 1 A three-way warp double weave fabric was obtained using polyester spun yarn (34 British count) as the warp yarn for the front side, 100% cotton spun yarn (40 British count) as the warp yarn for the back side, and highly crimped polyester filament yarn (150 denier) as the weft yarn for the front side. The warp density was 170 threads / inch on the grey machine, and the weft density was 65 threads / inch on the grey machine.

[0038] The resulting woven fabric was dyed with a disperse dye, reduction washed, and dried to obtain the woven fabric of Example 1.

[0039] The obtained woven fabric was subjected to a friction fastness test using a friction tester type II (Gakushin type) method according to JIS L0849:2013, and the wet friction fastness was evaluated. The evaluation result for Example 1 was grade 4 to 5.

[0040] <Example 2> A three-way warp double weave fabric was obtained using polyester spun yarn (34 count English) as the warp yarn for the front side, polyester and cotton blend (65% polyester / 35% cotton) spun yarn (42 count English) as the warp yarn for the back side, and highly crimped polyester filament yarn (150 denier) as the weft yarn for the front side. The warp density was 170 threads / inch on the grey machine, and the weft density was 65 threads / inch on the grey machine.

[0041] The resulting woven fabric was dyed with a disperse dye, reduction washed, and dried to obtain the woven fabric of Example 2.

[0042] The woven fabric obtained was evaluated for wet rubbing fastness in the same manner as in Example 1. The evaluation result for Example 2 was grade 4.

[0043] Example 3 A three-way warp double weave fabric was obtained using polyester spun yarn (34 English count) as the warp yarn for the front side, polyester and cotton blend (45% polyester / 55% cotton) spun yarn (42 English count) as the warp yarn for the back side, and highly crimped polyester filament yarn (150 denier) as the weft yarn for the front side. The warp density was 170 threads / inch on the grey machine, and the weft density was 65 threads / inch on the grey machine.

[0044] The resulting woven fabric was dyed with a disperse dye, reduction washed, and dried to obtain the woven fabric of Example 3.

[0045] The woven fabric obtained was evaluated for wet rubbing fastness in the same manner as in Example 1. The evaluation result for Example 3 was grade 4 to 5.

[0046] <Comparative Example 1> The warp and weft yarns were all TC (65% polyester / 35% cotton) (2-ply yarn, English count 34) and the fabric was woven in a 2 / 1 right twill weave. The warp density was 64 threads / inch and the weft density was 54 threads / inch.

[0047] The resulting woven fabric was dyed with a disperse dye and a reactive dye, reduction washed, and dried to obtain the woven fabric of Comparative Example 1.

[0048] The woven fabric obtained was evaluated for wet rubbing fastness in the same manner as in Example 1. The evaluation result for Comparative Example 1 was grade 2 to 3. [Industrial Applicability]

[0049] According to the present invention, a double warp weave fabric in which the warp and weft threads constituting the front weave are made of polyester fibers and the warp threads constituting the back weave are made of cellulosic fibers can be provided, which has excellent friction fastness and is of great practical value.

Claims

1. The fabric is a warp double weave fabric in which the warp and weft threads constituting the front structure are made of polyester fibers and the warp threads constituting the back structure are made of cellulosic fibers, and the fabric is characterized in that only the polyester fibers are dyed with a disperse dye.

2. 2. The woven fabric according to claim 1, wherein the cellulosic fiber is at least one selected from the group consisting of cotton fibers and mixed fibers containing cotton.

3. 3. The woven fabric according to claim 1, wherein the warp double weave is one of three-way twill, four-way twill, and five-way twill.