Fabric and fiber product

Abstract

To provide a fabric having deep hue, fine chambray effect, bulky spun-like touch feeling, and abrasion resistance, and also to provide a fiber product formed by using the fabric.SOLUTION: A fabric includes polyester modified cross section fiber and polyamide modified cross section fiber. The polyester modified cross section fiber and the polyamide modified cross section fiber have the same cross-sectional shape.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a fabric having a deep color, a fine chambray effect, a bulky spun-like texture, and abrasion resistance, and to a textile product made using the fabric. [Background technology]

[0002] Consumer needs are also diversifying in the field of sportswear, and there is a demand for products that not only have functionality but also new appearances and textures. Products that use composite fibers and have a unique color effect, a good chambray feel, and an excellent texture are being proposed.

[0003] Among these, various types of composite fibers made of polyester polymers and polyamide polymers have been developed, due in part to the ease of obtaining the polymers. For example, copolymerized polyesters containing sulfoisophthalic acid as the polyester polymer are known to have excellent cross-sectional formability due to the strong electrostatic adhesion between the sulfonate groups of the polyester polymer and the amide groups of the polyamide polymer. Cross-sectional shapes such as sea-island cross-sections, side-by-side cross-sections, and pie-split composite cross-sections have been proposed.

[0004] For example, Patent Document 1 discloses moisture-sensitive crimped conjugated fibers in which copolymerized polyethylene terephthalate having sulfonate groups and polyamide are bonded side-by-side, and the fibers have latent crimp development, which allows the crimp rate to change reversibly with changes in humidity. However, these conjugated fibers are used with both components bonded together, and the bonded surface is long, so it is not anticipated that the fibers will be split later.

[0005] On the other hand, as a technique for splitting a composite fiber after spinning, for example, Patent Document 2 discloses a method for producing a mixed yarn in which a crimped yarn is used as it is and the two components are split by a mild alkaline aqueous solution treatment. However, this invention relates to a composite fiber of a copolymer polyester and polyamide 46 or a polyamide containing nylon 46 as the main component, and the splitting method utilizes the poor affinity between nylon 46 and the copolymer polyester, and is based on the alkaline aqueous solution treatment. This invention has the problem of poor spinnability due to the large difference in melting points between nylon 46 and the copolymer polyester, and also cannot be said to have superior texture compared to the conventional method in which the two components are separately spun into fibers to produce a mixed yarn.

[0006] Furthermore, Patent Document 3 proposes a side-by-side type composite fiber of a copolymer polyester and a polyamide, which is cost-effective, has excellent spinnability, and is easy to split in a post-process. However, the shape of such a fiber is a cocoon-like shape in which two circular cross sections are joined together, and the fibers after splitting also have an approximately circular cross section, so there is room for improvement in terms of texture and appearance compared to fibers made by conventional methods in which the two components are separately processed into fibers. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-239140 [Patent Document 2] Japanese Patent Application Publication No. 63-92721 [Patent Document 3] Japanese Patent Application Laid-Open No. 2018-59253 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made in view of the above background, and an object of the present invention is to provide a fabric having a deep color, a fine chambray effect, a bulky spun texture, and abrasion resistance, and a textile product made using the fabric. [Means for solving the problem]

[0009] As a result of extensive research into achieving the above object, the present inventors have discovered that by bonding side-by-side irregular cross sections of polymers with different glass transition temperatures to form a specially shaped irregular side-by-side composite cross section fiber, it is possible to obtain a fabric that has a rich color, a fine chambray effect, a bulky spun-like texture, and abrasion resistance, and further extensive research has led to the completion of the present invention. Thus, the following inventions are provided.

[0010] 1. A fabric comprising polyester modified cross-section fibers and polyamide modified cross-section fibers, characterized in that the polyester modified cross-section fibers and the polyamide modified cross-section fibers have the same cross-sectional shape. 2. The fabric according to the above item 1, wherein the ratio (A:B) of the single fiber fineness of the polyester modified cross-section fiber (A) to the polyamide modified cross-section fiber (B) is in the range of 40:60 to 60:40. 3. The fabric according to 1 or 2 above, wherein the cross-sectional shape has two or more protrusions. 4. The fabric according to any one of 1 to 3 above, wherein the polyester modified cross-section fiber is made of sulfoisophthalic acid cation salt copolymer polyester, and the polyamide modified cross-section fiber is made of nylon 6. 5. The fabric according to any one of the above items 1 to 4, wherein the polyester modified cross-section fiber and the polyamide modified cross-section fiber are crimped fibers. 6. The fabric according to any one of 1 to 5 above, wherein the polyester modified cross-section fiber and the polyamide modified cross-section fiber are formed by splitting side-by-side type composite fibers. 7. The fabric according to any one of the above 1 to 6, wherein the polyester modified cross-section fiber and the polyamide modified cross-section fiber have a single fiber fineness of 2.0 dtex or less. 8. Fabric weight: 30-300g / m 2 8. The fabric according to any one of 1 to 7 above, wherein the range is: 9. The fabric according to any one of 1 to 8 above, wherein the fabric is a knitted fabric and has a density of 50 to 120 courses per 2.54 cm and 40 to 100 wales per 2.54 cm. 10. The fabric according to any one of 1 to 9 above, wherein the fabric is a woven fabric having a warp density of 50 to 300 threads / 2.54 cm and a weft density of 50 to 300 threads / 2.54 cm. 11. The fabric according to any one of 1 to 10 above, which has an abrasion resistance of 30,000 cycles or more according to the Martindale method of JIS-L1096. 12. Any textile product selected from the group consisting of clothing, lining, interlining, socks, belly warmers, hats, gloves, sleepwear, bedding, bedding covers, and car seat covering materials, which is made using the fabric described in any one of 1 to 11 above. [Effects of the Invention]

[0011] According to the present invention, a fabric having a deep color, a fine chambray effect, a bulky spun-like texture, and abrasion resistance can be obtained, and a textile product made from the fabric can be obtained. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram showing the knitting structure used in Example 1 and Comparative Example 1. FIG. [Figure 2] FIG. 1 is a diagram showing the knitting structure used in Example 2. [Figure 3] 1 is a diagram showing the weave structure used in Example 3, Example 4, and Comparative Example 2. [Figure 4] FIG. 1 is a diagram showing the cross-sectional shape of an X-shaped atypical side-by-side conjugate fiber. [Figure 5] FIG. 1 is a diagram showing the cross-sectional shape of a heteromorphic side-by-side composite fiber having three protrusions. [Figure 6] FIG. 1 is a diagram showing the cross-sectional shape of a heteromorphic side-by-side composite fiber in which C-shaped shapes are bonded together. DETAILED DESCRIPTION OF THE INVENTION

[0013] An embodiment of the present invention will be described in detail below. The fabric of the present invention is a fabric containing polyester modified cross-section fibers and polyamide (sometimes called "nylon") modified cross-section fibers, characterized in that the polyester modified cross-section fibers and the polyamide modified cross-section fibers have the same cross-sectional shape. In such a fabric, modified cross-section fibers of different polymers are randomly mixed within the fiber bundle, resulting in a fabric with deep color, a fine chambray effect, a bulky spun-like texture, and abrasion resistance.

[0014] Here, the ratio (A:B) of the single fiber fineness of the polyester modified cross-section fiber (A) to the polyamide modified cross-section fiber (B) is preferably in the range of 40:60 to 60:40. Furthermore, it is preferable that the cross-sectional shape of the modified cross-section fiber has two or more (more preferably 2 to 4) protrusions, since this provides bulkiness and a spun-like texture. Specific examples of such shapes include a V-shape, a three-protrusion type, and a C-shape.

[0015] The single fiber fineness of the polyester modified cross-section fiber and polyamide modified cross-section fiber is preferably 2.0 dtex or less, more preferably 1.6 dtex or less (particularly preferably 0.1 to 1.5 dtex), and the fine modified cross-section fibers are randomly mixed at the single fiber level to provide softness and an excellent chambray-like appearance.

[0016] Furthermore, it is preferable that the polyester modified cross-section fiber and the polyamide modified cross-section fiber are crimped fibers.Furthermore, it is preferable that the polyester modified cross-section fiber and the polyamide modified cross-section fiber are obtained by splitting side-by-side type composite fibers.Hereinafter, a case where the polyester modified cross-section fiber and the polyamide modified cross-section fiber are obtained by splitting side-by-side type composite fibers will be described in detail.

[0017] First, the composite fiber preferably used is a composite fiber in which protruding irregular cross sections of polymers with different glass transition points are bonded side by side, and the ratio X / Y, where X is the distance between the centers of gravity connecting the centers of the circumscribing circles of each protruding cross section and Y is the distance between the joining surfaces of both cross sections, is 1.1 or more.

[0018] Here, the cross-sectional shapes of the composite fibers are preferably those shown in Figures 4 to 6. In the X-shaped cross-sectional shape of Figure 4, after splitting, the polyester modified cross-section fiber and the polyamide modified cross-section fiber have a V-shaped cross-sectional shape, each with two protrusions. In the cross-sectional shape of Figure 5, after splitting, the polyester modified cross-section fiber and the polyamide modified cross-section fiber each have three protrusions. Furthermore, in the cross-sectional shape of Figure 6, after splitting, the polyester modified cross-section fiber and the polyamide modified cross-section fiber have a C-shaped cross-sectional shape, each with two curved protrusions.

[0019] It is known that the distance X between the centers of the two components is proportional to the coil diameter of the resulting crimped shape. The inventors have discovered that by using a modified cross section with protrusions, it is possible to increase the center distance between the two components and produce a large crimped coil even with a small fineness.

[0020] As shown in Figures 4 to 6, the center-to-center distance X refers to the distance between the centers of the circumscribed circles of the protruding cross sections of each component. It is also desirable that the ratio of this distance to the joining distance Y of both cross sections be 1.1 or greater. This increases the distance between the centers of gravity of both components in the cross section, resulting in a larger crimped coil diameter and greater crimp development potential. A larger crimped coil results in a significant change in the shape of the fiber when the fabric expands or when the coil shape (described below) changes, allowing for a varied fabric texture. Furthermore, a high crimp development potential allows for the fiber to develop crimps against the restraining force of the woven or knitted fabric, resulting in a wide variety of fiber shapes and a random intermixing of split fibers within and outside the fiber bundle, creating a high-quality, delicate texture and appearance.

[0021] If the X / Y ratio is less than 1.1, the crimped coil is small, resulting in a lack of bulkiness, and the splitting ability of both components is poor, resulting in a fabric that lacks characteristics such as volume and a natural mixed feel.

[0022] On the other hand, if X / Y is 1.1 or higher, the crimp coil increases in proportion to the value, and particularly when a component that self-extends in warm water, such as nylon 6, is used, the crimp morphology changes significantly, and the high extensibility causes the bonded surfaces to peel and split, making it possible to create a fabric with a voluminous and natural feel in which fine, irregularly shaped split fibers are randomly present inside and outside the fiber bundle. A ratio of 1.2 to 2.5 is preferable, and if it exceeds 2.5, it becomes necessary to lower the polymer temperature in order to reduce the Behruss effect or surface tension after discharge from the spinneret in order to strengthen the irregularity, which poses practical problems such as reduced fiber strength and elongation.

[0023] The weight ratio of the two components is preferably 50:50 from the viewpoint of crimp development, but the ratio of the two components may vary within the range of 40:60 to 60:40. In the present invention, the fibers preferably used are modified side-by-side composite cross section fibers in which the polymers have different glass transition points and the polymer with the lower glass transition point is positioned on the inner side of the crimp.

[0024] To form a large crimped coil, it is preferable for the side-by-side components to have a large difference in glass transition temperature. This is because, after the polymer is discharged from the discharge hole and passes through the heat-retention zone, it is necessary to use cooling air to cool the spun yarn while promoting orientation crystallization. In this process, the extensional viscosity of the polymer with a high glass transition point increases first, so orientation crystallization is promoted compared to the other polymers. On the other hand, the polymer with a low glass transition point is promoted to deform to follow the spinning line speed of the polymer with a high glass transition point without a sufficient increase in extensional viscosity, so orientation crystallization is suppressed. In this way, increasing the difference in crystal orientation between the two components increases the difference in shrinkage force between the two components, which is effective in expressing crimp performance. In this case, the component with a low orientation is positioned on the inside of the crimped coil because it has low orientation crystallinity and a high shrinkage rate.

[0025] The difference in glass transition temperature between the two components is preferably 50° C. or less, and more preferably in the range of 10 to 40° C. If the temperature difference is greater than this, the thinning followability of the two components during the spinning process may deteriorate, resulting in poor spinning, or the orientation of the component with a lower glass transition temperature may be significantly inhibited, resulting in low strength and elongation, which may cause problems in terms of practicality.

[0026] Furthermore, the different polymers combined in the composite fiber are preferably nylon 6 and a sulfoisophthalic acid cation salt copolymer polyester (more preferably a sodium sulfoisophthalate copolymer polyester), and it is particularly preferred that the composite fiber is an atypical side-by-side composite fiber in which nylon 6 is positioned on the inside after crimping occurs.

[0027] Nylon 6 has a lower glass transition point than the copolyester, and is therefore positioned on the inner side of the crimp. The glass transition point of nylon 6 is approximately 50°C, preferably in the range of 45 to 55°C. When the polyester that is the main component of the copolyester is polyethylene terephthalate or polytrimethylene terephthalate, the glass transition temperature of the copolyester is approximately 70 to 90°C, depending on the copolymerization mole percentage of sodium sulfoisophthalate, and nylon 6 is positioned on the inner side of the crimp, resulting in an atypical side-by-side composite cross section fiber.

[0028] The nylon 6 placed on the inside is in a low orientation state, so it has a large self-extension rate in hot water, which causes changes in crimp and causes it to try to elongate beyond the length of the polyester component, making it prone to interfacial peeling.

[0029] Here, the sulfoisophthalic acid cation salt copolymerized polyester is a modified polyester copolymerized with a compound having an alkali or alkaline earth metal salt of sulfonic acid, a phosphonium salt, or the like, and having one or more functional groups capable of forming an ester. The intrinsic viscosity η of this modified polyester (measured in an o-chlorophenol solution at 25°C) is preferably 0.4 to 0.7.

[0030] Suitable copolymerization components include 5-sodium sulfoisophthalic acid and its ester derivatives, 5-phosphonium sulfoisophthalic acid and its ester derivatives, and sodium p-hydroxyethoxybenzenesulfonate. Among these, 5-sodium sulfoisophthalic acid is preferably used, and the copolymerization amount is preferably 0.5 to 7 mol %, more preferably 1.5 to 4 mol %, based on the acid component of the copolymerized polyester. If the amount is less than 0.5 mol %, the adhesion to nylon 6 may be insufficient, resulting in peeling during the spinning process and a lower glass transition temperature. On the other hand, if the amount exceeds 7 mol %, the melt viscosity of the polymer may increase, reducing spinnability and other process stability issues.

[0031] Furthermore, other copolymerization components such as dioxy compounds, such as diethylene glycol and hexamethylene glycol, and aliphatic dicarboxylic acids, such as adipic acid, isophthalic acid and phthalic acid, may be copolymerized. For nylon 6, the intrinsic viscosity η (measured in an m-cresol solution at 30° C.) is preferably 1.0 to 1.6.

[0032] In the present invention, the irregular side-by-side composite fiber preferably has a distance Y between the surfaces where irregular cross sections of polymers with different glass transition points are bonded side by side in the range of 3 to 13 μm. A smaller bonding distance is preferable in terms of increasing the crimp size, but if it is too small, the two polymers may not be extruded and bonded from the spinneret, making it impossible to form a cross section and develop crimp. If the bonding distance is too large, the crimp size may become small or the two components may not be separated sufficiently during textile processing. A preferred bonding distance is in the range of 5 to 12 μm.

[0033] The thermal stress of the fibers is preferably in the range of 0.15 cN / dtex to 0.5 cN / dtex, and more preferably 0.2 cN / dtex to 0.4 cN / dtex. The thermal stress indicates the crimp development during textile processing. If the thermal stress is less than 0.15 cN / dtex, the fabric may not swell due to a large crimp structure, and a good mix effect of split fine fibers randomly arranging inside and outside the fiber bundle may not be obtained. If the thermal stress is more than 0.5 cN / dtex, the fibers themselves may become stiff due to shrinkage, increasing the fabric density, and the fluffy, soft texture may not be obtained.

[0034] The crimp percentage is preferably 4% or more (more preferably 4 to 20%). If it is less than 4%, the difference in physical properties between the bonded cross-sectional components is small, and the coiling power due to crimping is small, so it may be difficult to obtain good texture such as fluffiness and softness.

[0035] The single fiber fineness of the composite fiber is preferably about 0.2 dtex to 4 dtex. If it is less than 0.2 dtex, it may be difficult to form a modified cross section, and the fiber strength and elongation may be reduced, which may cause problems in the process. If the single fiber fineness of the composite fiber exceeds 4 dtex, it may be difficult to achieve a soft and delicate texture.

[0036] The strength and elongation of the composite fiber are preferably 1.8 cN / dtex or more and 20% or more. If the strength and elongation are both less than the above ranges, problems may occur in terms of textile quality due to single yarn breakage and friction during the weaving, knitting, and processing processes.

[0037] The composite fiber is characterized by containing fibers that undergo a repeated process in which, during the textile processing process, nylon 6 on the inside of the coil self-extends in a hot water bath at a temperature of 80°C or higher, changing from a crimped structure to a flat, linear fiber form. Upon removal from the hot water bath, the yarn temperature drops, and the absorbed water is dried, the fiber returns to its original crimped state. This is a phenomenon in which nylon 6 is positioned on the inside of the coil due to its low orientation, and the crimped state of the fiber changes due to its self-extension property in hot water. As a result, during textile processing, the apparent fiber length changes due to changes in the coil structure caused by immersion in hot water or drying. Even though the fibers are constrained to each other in the woven or knitted fabric structure, the fibers' elongation and crimped coil structure change, resulting in a mixing effect, such as the rearrangement of individual fibers within the fiber bundle, which allows for variations in natural fiber morphology, similar to that of natural fibers.

[0038] When nylon 6 is self-elongated in hot water, the crimped form elongates, and the length under light load is preferably 130 to 200%. Subsequently, upon drying, the crimped form returns to its original state, and the apparent length shortens to return to its original state. Since the return speed differs between individual fibers, various inter-fiber arrangements can be achieved, resulting in a mixing effect. If the elongation is less than 130%, the splitting and mixing effects cannot be achieved. Furthermore, if the elongation is 200% or more, the fiber structure of nylon 6 is underdeveloped, making it difficult to achieve repeatable elongation / contraction, which is undesirable. A range of 140 to 180% is preferred.

[0039] In the textile processing process, the nylon 6 inside the coil self-extends in a hot water bath at 80°C or higher, changing from a crimped structure to a flat, linear fiber form, causing the bonded surfaces to peel off. The split fibers exhibit various characteristics, such as softness, gloss, and an ultra-fine feel, due to their fineness and modified cross-section.

[0040] Titanium oxide, colorants, light stabilizers, etc. may also be added as additives to the polyester and nylon 6 used in the composite fiber, as long as they do not cause any problems in spinning, drawing, or textile processing.

[0041] Next, a preferred example of the method for producing the composite fiber will be described. The two polymers are melted in separate extruders and introduced into a spin pack equipped with a spinneret using a metering pump such as a gear pump. The two polymers are distributed among several holes in the spinneret and extruded from separate, irregular-shaped nozzles. The two components are then bonded together to form a side-by-side composite cross section with an irregular cross section, which can then be wound up at various speeds.

[0042] After winding the undrawn yarn, it can be drawn in a separate drawing machine. Alternatively, a direct draw spinning process is possible in which the undrawn yarn is preheated on a take-up roller without being wound, drawn and heat-set between heat-setting rollers, and then wound. Furthermore, it is possible to produce partially oriented yarn with a residual elongation of about 100 to 150% at a high spinning speed, and then produce DTY-textured yarn in a false twisting process, or to blend it with other yarns to produce composite fibers. The spinning speed is preferably in the range of 1,000 to 3,500 m / min.

[0043] Stretching is performed using rollers that are 10 to 30°C higher than the higher glass transition temperature of the polymer, and heat setting is performed by winding the fabric around rollers that are 20 to 50°C higher than the crystallization temperature or by passing the fabric through a non-contact heater, thereby preheating and heat setting the fabric. In order to adjust the shrinkage rate during textile processing, a cooling roller can be installed after the heat setting rollers and a relaxation heat treatment can be performed to reduce the shrinkage rate.

[0044] After weaving and knitting, the degree of splitting of the composite fiber can be adjusted in processes such as refining, presetting, dyeing, and final setting. In addition, when dyeing, the combination of nylon 6 and sodium sulfoisophthalate copolymer polyester is effective in creating a delicate fabric appearance by using acid dyes and cationic dyes that are suitable for each material, taking advantage of their heterochromatic properties.

[0045] The fabric of the present invention contains polyester modified cross-section fibers and polyamide modified cross-section fibers having the same cross-sectional shape as the polyester modified cross-section fibers. In this case, it is most preferable that the fabric is composed only of these polyester modified cross-section fibers and polyamide modified cross-section fibers, but other fibers (for example, ordinary round cross-section fibers or modified cross-section fibers having different cross-sectional shapes) may also be contained in the fabric.

[0046] The weave of the fabric of the present invention is not particularly limited, and may be either a knitted fabric or a woven fabric. Suitable examples include knitted fabrics with knitting structures such as plain weave, twill weave, and satin weave, but are not limited to these. The number of layers may be a single layer or two or more layers.

[0047] In this case, if the fabric is a knitted fabric, the knitting density is preferably 50 to 120 courses / 2.54 cm and 40 to 100 wales / 2.54 cm. Furthermore, if the fabric is a woven fabric, the fabric density is preferably 50 to 300 warp threads / 2.54 cm and 50 to 300 weft threads / 2.54 cm. In the fabric of the present invention, the basis weight of the fabric is 30 to 300 g / m 2 It is preferable that the range is within the range of

[0048] The fabric of the present invention can be obtained, for example, by knitting or weaving the composite fiber (and other fibers as needed) in a conventional manner, and then splitting the composite fiber into polyester modified cross-section fibers and polyamide modified cross-section fibers by heat treatment such as dyeing processing.

[0049] When dyeing is performed, the temperature for the dyeing is preferably 100 to 140°C (more preferably 110 to 135°C), and the time for keeping the top temperature is preferably within a range of 5 to 40 minutes. The dyed fabric is preferably subjected to a final dry heat set. In this case, the temperature for the final dry heat set is preferably 120 to 200°C (more preferably 140 to 180°C), and the time is preferably within a range of 1 to 3 minutes.

[0050] Furthermore, various types of processing may be additionally applied, such as conventional raising processing, ultraviolet shielding, or processing to impart functions such as antibacterial agents, deodorizers, insect repellents, luminescent agents, retroreflective agents, negative ion generators, water absorption processing, and water repellent agents.

[0051] The fabric thus obtained has the above-mentioned constitution and therefore has a deep color, a fine chambray effect, a bulky spun texture, and excellent abrasion resistance. Here, the abrasion resistance of the fabric is preferably 30,000 times or more in terms of abrasion durability according to the Martindale method of JIS-L1096.

[0052] The present invention also provides a textile product selected from the group consisting of clothing, linings, interlinings, socks, belly warmers, hats, gloves, sleepwear, bedding coverings, bedding covers, and car seat covering materials, which uses the above-mentioned fabric. Because such textile products use the above-mentioned fabric, they exhibit deep colors, a fine chambray effect, a bulky spun-like texture, and excellent abrasion resistance. [Example]

[0053] The present invention will be described in detail below. However, the present invention is not limited to the examples described below. The measurement methods used in the examples and comparative examples will be described below.

[0054] (1) Weight Measurement was performed according to JISL1018-1998 6.4.

[0055] (2) Cover Factor The warp cover factor (warp CF) and weft cover factor (weft CF) were calculated using the following formula and added together. CF = (DWp / 1.1) 1 / 2 ×MWp Latitude CF=(DWf / 1.1) 1 / 2 ×MWf [DWp is the total warp thread size (dtex), MWp is the warp thread density (counts / 2.54cm), DWf is the total weft thread size (dtex), and MWf is the weft thread density (counts / 2.54cm).]

[0056] (3) Crimp rate A 30cm long skein was made, and a heavy load of 220 mg / dtex and a light load of 20 mg / dtex were applied, and lengths L0 and L1 were measured. Then, under a light load, the fabric was treated with boiling water for 30 minutes to induce crimping. The moisture was removed using filter paper and the fabric was dried for 3 hours. Then, length L3 was measured again under a heavy load, and the heavy load was removed, and length L2 was measured under a light load. Using L0, L2, and L3, the crimp rate was calculated using the following formula: Crimp rate (TC)(%)=(L2-L3) / L0×100(%)

[0057] (4) Abrasion resistance Abrasion tests were carried out according to the JIS1096 Martindale method.

[0058] (5) Fine chambray appearance The tester visually inspected the fabric and rated it as ◯ if it had a fine chambray appearance on the level of a single fiber, and x if it did not.

[0059] [Example 1] Nylon 6 and 2.6 mol% 5-sodium sulfoisophthalic acid copolymerized polyethylene terephthalate (η = 0.55) were spun at a spinning temperature of 265°C and wound up at a spinning speed of 2500 m / min to obtain a side-by-side composite fiber (weight ratio of both components: 50:50) with an X-shaped cross section as shown in Figure 4. This was preheated and drawn at 90°C, heat-set using a 180°C slit heater, and wound up at a winding speed of 600 m / min to obtain a yarn with a total fineness of 55 dtex / 48 strands (crimp rate: 5.7%).

[0060] Next, a circular knitted fabric having a smooth structure as shown in FIG. 1 was knitted using the composite fiber using a 36-gauge circular knitting machine. The knitted fabric was then dyed using a disperse dye at 130°C for 15 minutes. A hydrophilizing agent (polyethylene terephthalate-polyethylene glycol copolymer) was added to the dye liquor at a ratio of 2 ml / L during dyeing, thereby providing the hydrophilizing agent to the knitted fabric. The circular knitted fabric was then subjected to a final dry heat set at 160°C for 1 minute.

[0061] The resulting knitted fabric was a random mix of modified cross-section fibers made of nylon 6, which had been split from the composite fiber, and modified cross-section fibers made of 2.6 mol% 5-sodium sulfoisophthalic acid copolymerized polyethylene terephthalate, each with a V-shaped cross-section (having two protrusions). It had a rich color, a fine chambray effect, a bulky spun-like texture, and abrasion resistance. The single fiber fineness of the polyester (sodium sulfoisophthalate copolymerized polyester) fiber and polyamide (nylon 6) fiber contained in the knitted fabric was both 0.6 dtex. The evaluation results are shown in Table 1.

[0062] [Example 2] Nylon 6 and 2.6 mol% 5-sodium sulfoisophthalic acid copolymerized polyethylene terephthalate (η = 0.55) were spun at a spinning temperature of 265°C and wound up at a spinning speed of 2500 m / min to obtain a side-by-side (weight ratio of both components: 50:50) X-shaped composite fiber (total fineness: 92 dtex / 24 strands) POY as shown in Figure 4. The obtained POY was false-twisted and crimped at a yarn speed of 500 m / min, a heater temperature of 155°C, and a draw ratio of 1.6 to obtain a false-twisted crimped yarn (total fineness: 55 dtex / 48 strands, crimp rate: 4.7%).

[0063] Next, using a 28-gauge circular knitting machine, a plain knitted fabric shown in Figure 2 was knitted using a false-twisted crimped yarn made from the composite fiber and a polyurethane yarn (ROIKA (trade name), total fineness 22 dtex / strand) by plating (plaited yarn) knitting. The knitted fabric was then dyed using a disperse dye at 130°C for 15 minutes. A hydrophilizing agent (polyethylene terephthalate-polyethylene glycol copolymer) was added to the dye liquor at a ratio of 2 ml / L during dyeing, thereby providing the hydrophilizing agent to the knitted fabric. The circular knitted fabric was then subjected to a final dry heat set at 160°C for 1 minute.

[0064] The resulting knitted fabric was a random mix of modified cross-section fibers made of nylon 6, which had been split from the composite fiber, and modified cross-section fibers made of 2.6 mol% 5-sodium sulfoisophthalic acid copolymerized polyethylene terephthalate, each with a V-shaped cross-section (having two protrusions). It had a rich color, a fine chambray effect, a bulky spun-like texture, and abrasion resistance. The single fiber fineness of the polyester (sodium sulfoisophthalate copolymerized polyester) fiber and polyamide (nylon 6) fiber contained in the knitted fabric was both 0.6 dtex. The evaluation results are shown in Table 1.

[0065] [Example 3] Nylon 6 and 2.6 mol% 5-sodium sulfoisophthalic acid copolymerized polyethylene terephthalate (η = 0.55) were spun at a spinning temperature of 265°C and wound up at a spinning speed of 2500 m / min to obtain a side-by-side (weight ratio of both components: 50:50) X-shaped composite fiber (total fineness: 92 dtex / 24 strands) POY as shown in Figure 4. The obtained POY was false-twisted and crimped at a yarn speed of 500 m / min, a heater temperature of 155°C, and a draw ratio of 1.6 to obtain a false-twisted crimped yarn (total fineness: 55 dtex / 48 strands, crimp rate: 5.7%). Next, the false twisted crimped yarn made of the composite fiber was used as the warp and weft, and a plain weave fabric was woven using a rapier loom in the design shown in FIG.

[0066] The fabric was then subjected to a spread scouring treatment at 95°C using a scouring device. It was then dyed with a disperse dye using a jet dyeing machine at 130°C, and then subjected to the following water-repellent treatment. The water-repellent treatment was carried out using the following processing agent, with the fabric squeezed out at a pickup rate of 80%, dried at 130°C for 3 minutes, and then heat-treated at 170°C for 45 seconds. <Processing agent composition> Fluorine-free water repellent 5.0wt% (Nicca Chemical Co., Ltd., NeoseedNR-7080, hydrocarbon compound) Melamine resin 0.3wt% (Sumitomo Chemical Co., Ltd., Sumitex Resin M-3) Catalyst 0.3wt% (Sumitomo Chemical Co., Ltd., Sumitex Accelerator ACX) Water 94.4wt%

[0067] The fabric thus obtained had a basis weight of 76.7 g / m 2 The warp density was 158 / 2.54 cm, the weft density was 107 / 2.54 cm, and the cover factor was 1874. The composite fiber was split to form a V-shaped (two-lobe) cross section randomly mixed with modified cross section fibers made of nylon 6 and modified cross section fibers made of 2.6 mol% 5-sodium sulfoisophthalic acid copolymerized polyethylene terephthalate, resulting in a deep color, a fine chambray effect, a bulky spun-like texture, and abrasion resistance. The evaluation results are shown in Table 1.

[0068] [Example 4] Nylon 6 and 2.6 mol% 5-sodium sulfoisophthalic acid copolymerized polyethylene terephthalate (η = 0.55) were spun at a spinning temperature of 265°C and wound up at a spinning speed of 2500 m / min to obtain a side-by-side (weight ratio of both components: 50:50) X-shaped composite fiber (total fineness: 92 dtex / 24 strands) POY as shown in Figure 4. The obtained POY was false-twisted and crimped at a yarn speed of 500 m / min, a heater temperature of 155°C, and a draw ratio of 1.6 to obtain a false-twisted crimped yarn (total fineness: 55 dtex / 48 strands, crimp rate: 5.7%). Next, the false twisted crimped yarn made of the composite fiber was used as the warp and weft, and a plain weave fabric was woven using a rapier loom in the design shown in FIG.

[0069] The fabric was then subjected to a spread scouring treatment at 95°C using a scouring machine. It was then dyed using an acid dye and a cationic dye at 100°C using a jet dyeing machine, and then subjected to the following water-repellent treatment. The water-repellent treatment was carried out using the following processing agent, with the fabric squeezed out at a pickup rate of 80%, dried at 130°C for 3 minutes, and then heat-treated at 170°C for 45 seconds. <Processing agent composition> Fluorine-free water repellent 5.0wt% (Nicca Chemical Co., Ltd., NeoseedNR-7080, hydrocarbon compound) Melamine resin 0.3wt% (Sumitomo Chemical Co., Ltd., Sumitex Resin M-3) Catalyst 0.3wt% (Sumitomo Chemical Co., Ltd., Sumitex Accelerator ACX) Water 94.4wt%

[0070] The fabric thus obtained had a basis weight of 86.8 g / m 2 The warp density was 158 / 2.54 cm, the weft density was 140 / 2.54 cm, and the cover factor was 2107. The composite fibers were split to form a V-shaped (two-lobe) cross section randomly mixed with modified cross section fibers made of nylon 6 and modified cross section fibers made of 2.6 mol% 5-sodium sulfoisophthalic acid copolymerized polyethylene terephthalate, resulting in a deep color, a fine chambray effect, a bulky spun-like texture, and abrasion resistance. The evaluation results are shown in Table 1.

[0071] [Comparative Example 1] Using polyethylene terephthalate false twisted crimped yarn (semi-dull) with a total fineness of 66 dtx / 48 strands, a circular knitted fabric with a smooth structure as shown in Figure 1 was knitted using a 28-gauge circular knitting machine.

[0072] The knitted fabric was then dyed using a disperse dye at 130°C for 15 minutes. A hydrophilizing agent (polyethylene terephthalate-polyethylene glycol copolymer) was added to the knitted fabric at a ratio of 2 milliliters per liter of the dye solution during dyeing, by performing a co-dye treatment. The circular knitted fabric was then subjected to a final dry heat set at 160°C for 1 minute. The resulting knitted fabric had excellent water absorption and quick-drying properties, but was a solid color and did not have a chambray appearance. The evaluation results are shown in Table 1.

[0073] Comparative Example 2 The warp yarns were a polyester crimped yarn with a total fineness of 38 dtex / 36 strands (semi-dull, twist S300 t / m, yarn A) and a polyester crimped yarn with a total fineness of 33 dtex / 36 strands (bright, twist Z300 t / m, high-strength yarn B) with a yarn strength of 4.9 cN / dtex, arranged in a 7:2 ratio. The weft yarn was a polyester crimped yarn with a total fineness of 33 dtex / 36 strands (bright, twist Z300 t / m, high-strength yarn B) with a yarn strength of 4.9 cN / dtex, arranged in a 7:2 ratio. A plain weave fabric was woven on a rapier loom with the structure shown in Figure 3.

[0074] The fabric was then subjected to a spread scouring treatment at 95°C using a scouring device. It was then dyed with a disperse dye using a jet dyeing machine at 130°C, and then subjected to the following water-repellent treatment. The water-repellent treatment was carried out using the following processing agent, with the fabric squeezed out at a pickup rate of 80%, dried at 130°C for 3 minutes, and then heat-treated at 170°C for 45 seconds. <Processing agent composition> Fluorine-free water repellent 5.0wt% (Nicca Chemical Co., Ltd., NeoseedNR-7080, hydrocarbon compound) Melamine resin 0.3wt% (Sumitomo Chemical Co., Ltd., Sumitex Resin M-3) Catalyst 0.3wt% (Sumitomo Chemical Co., Ltd., Sumitex Accelerator ACX) Water 94.4wt%

[0075] The fabric thus obtained had a basis weight of 59.6 g / m2 The warp density was 165 threads / 2.54 cm, the weft density was 130 threads / 2.54 cm, and the cover factor was 1667. The color was solid and no chambray appearance was obtained. The evaluation results are shown in Table 1.

[0076] [Table 1] [Industrial Applicability]

[0077] According to the present invention, a fabric having a deep color, a fine chambray effect, a bulky spun-like texture, and abrasion resistance, and a textile product using the fabric are provided, and the industrial value of the fabric is extremely great.

Claims

1. A fabric comprising a polyester modified cross-section fiber and a polyamide modified cross-section fiber, wherein the polyester modified cross-section fiber and the polyamide modified cross-section fiber have the same cross-sectional shape.

2. 2. The fabric according to claim 1, wherein the monofilament fineness ratio (A:B) of the polyester modified cross-section fiber (A) to the polyamide modified cross-section fiber (B) is in the range of 40:60 to 60:

40.

3. The fabric of claim 1 , wherein the cross-sectional shape has two or more projections.

4. 2. The fabric according to claim 1, wherein the polyester modified cross-section fiber is made of a sulfoisophthalic acid cation salt copolymer polyester, and the polyamide modified cross-section fiber is made of nylon 6.

5. The fabric according to claim 1 , wherein the polyester modified cross-section fiber and the polyamide modified cross-section fiber are crimped fibers.

6. The fabric according to claim 1 , wherein the polyester modified cross-section fiber and the polyamide modified cross-section fiber are formed by splitting a side-by-side type composite fiber.

7. 2. The fabric according to claim 1, wherein the polyester modified cross-section fiber and the polyamide modified cross-section fiber have a single fiber fineness of 2.0 dtex or less.

8. The fabric weight is 30 to 300 g / m ２ The fabric of claim 1 , wherein the fiber thickness is in the range of

9. 2. The fabric of claim 1, wherein the fabric is a knitted fabric and has a density of 50 to 120 courses per 2.54 cm and 40 to 100 wales per 2.54 cm.

10. 2. The fabric according to claim 1, wherein the fabric is a woven fabric having a warp density of 50 to 300 threads / 2.54 cm and a weft density of 50 to 300 threads / 2.54 cm.

11. 2. The fabric according to claim 1, wherein the fabric has an abrasion resistance of 30,000 cycles or more according to the Martindale method of JIS-L1096.

12. A textile product selected from the group consisting of clothing, linings, interlinings, socks, belly warmers, hats, gloves, sleepwear, bedding, bedding covers, and car seat covering materials, which uses the fabric according to any one of claims 1 to 11.

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