Composite yarns, fabrics and fiber products

Abstract

The subject of this invention is to provide composite yarns, fabrics, and fiber products that have excellent cotton-like appearance, texture, and anti-snagging properties, preferably excellent breathability and quick-drying properties. The solution is to obtain composite yarns using coarse and fine fancy yarns and crimped yarns, and obtain fabrics as needed.

Description

[0001] This application is a divisional application of Chinese patent application No. 202080039482.5 (the original application was entitled "Composite yarn, fabric and fiber products", and the original application date was May 18, 2020). Technical Field

[0002] This invention relates to composite yarns, fabrics, and fiber products that have excellent cotton-like appearance, texture, and anti-snagging properties, and preferably excellent breathability and quick-drying properties. Background Technology

[0003] Polyester long fibers, represented by polyethylene terephthalate (PET), are widely used in clothing, industrial materials, and other applications. However, due to the characteristics of their manufacturing process, they have disadvantages compared to natural fibers and textile yarns, such as smaller grit, lack of texture, and limited appearance variation.

[0004] To eliminate such drawbacks, the following method has been proposed: by controlling the length of the unstretched portion of the high-orientation unstretched polyester yarn, a thick section is imparted to the polyester fiber, thereby giving the fabric an arbitrary dotted pattern appearance (e.g., Patent Document 1, Patent Document 2).

[0005] However, these fabrics are not yet adequate in terms of their cotton-like appearance and snag resistance.

[0006] Existing technical documents

[0007] Patent documents

[0008] Patent Document 1: Japanese Patent Application Publication No. 60-199941

[0009] Patent Document 2: Japanese Patent Application Publication No. 7-229030 Summary of the Invention

[0010] The present invention was made in view of the above background, and its object is to provide composite yarns, fabrics and fiber products with excellent cotton-like appearance, texture and anti-snagging properties, preferably with excellent impermeability and quick-drying and water-absorbing properties.

[0011] In order to achieve the above-mentioned problems, the inventors conducted in-depth research and as a result, completed the present invention.

[0012] Thus, according to the present invention, "a composite yarn, characterized in that it comprises coarse and fine fancy yarns and crimped yarns."

[0013] At this point, the aforementioned coarse-fine detail fancy yarn is preferably a non-crimped yarn. Furthermore, the composite yarn preferably contains the aforementioned coarse-fine detail fancy yarn in a range of 30-85% by weight relative to the weight of the composite yarn. Additionally, the composite yarn preferably undergoes interlacing processing with a number of interlacings of 120 or less per meter. Furthermore, in the composite yarn, it is preferable that the coarse-fine detail fancy yarn is interlaced with the crimped yarn, or that the non-twisted portion of the coarse-fine detail fancy yarn is located in the core and the crimped yarn is located in the sheath is mixed with the twisted portion of the coarse-fine detail fancy yarn and the crimped yarn forming twisted filaments. Furthermore, in the composite yarn, the non-twisted portion is preferably 40-95% relative to the length of the composite yarn. Furthermore, in the composite yarn, the twisted portion is preferably 5-40% relative to the length of the composite yarn. Furthermore, the single fiber fineness of the aforementioned coarse-fine detail fancy yarn is preferably 1.5 dtex or more. Furthermore, the single fiber fineness of the aforementioned crimped yarn is preferably 1.0 dtex or less. Furthermore, the aforementioned coarse-fine detail fancy yarn and / or crimped yarn is preferably composed of polyester fiber or nylon fiber. Furthermore, the aforementioned coarse-fine fancy yarns and / or crimped yarns are preferably composed of chemically or materially recycled polymers. Additionally, the aforementioned coarse-fine fancy yarns and / or crimped yarns are preferably composed of cationic dyeable polyesters. Furthermore, the content of a matting agent in the aforementioned coarse-fine fancy yarns and / or crimped yarns is preferably 0.1% by mass or more.

[0014] According to the present invention, a fabric comprising the above-described composite yarn can be provided. In this case, the fabric is preferably a knitted fabric with a density of 35–100 weft yarns per 2.54 cm and 30–100 warp yarns per 2.54 cm. Furthermore, after 15 hours of hacksaw testing using the JIS L 1058-1995 D3 method, the anti-snagging property is preferably rated at level 3 or higher.

[0015] In addition, according to the present invention, a fiber product made of the above-mentioned composite yarn or fabric can be provided, which is selected from sportswear, outerwear, underwear, men's clothing, women's clothing, nursing clothing, work clothes, car seat upholstery materials and bedding.

[0016] According to the present invention, composite yarns, fabrics and fiber products with excellent cotton-like appearance, texture and anti-snagging properties, preferably also with excellent impermeability and quick-drying and water-absorbing properties can be obtained. Detailed Implementation

[0017] The embodiments of the present invention will now be described in detail. First, the composite yarn of the present invention is a composite yarn comprising thick and thin fancy yarns and crimped yarns.

[0018] Here, the composite yarn preferably includes the aforementioned coarse-fine detail yarn in a range of 30-85% by weight (more preferably 51-80% by weight) relative to the weight of the composite yarn. Furthermore, the weight ratio of the crimped yarn (relative to the weight of the composite yarn) is preferably in the range of 15-70% by weight (more preferably 30-48% by weight). When the weight ratio of the aforementioned coarse-fine detail yarn (relative to the weight of the composite yarn) is less than this range, an excellent cotton-like appearance may not be obtained. Additionally, when the weight ratio of the aforementioned coarse-fine detail yarn is greater than this range, the fabric's snag resistance may decrease.

[0019] Here, the aforementioned coarse-fine detail fancy yarn can be a crimped yarn, but non-crimped yarn is preferred. If the aforementioned coarse-fine detail fancy yarn is non-crimped yarn, the crimp difference between the coarse-fine detail fancy yarn and the crimped yarn is large, the thick places in the composite yarn become larger, and the cotton-like appearance and texture are excellent. In addition, when a non-crimped yarn is arranged in the core of the composite yarn and a crimped yarn is arranged in the sheath, the water absorption and quick-drying properties are improved due to capillary action.

[0020] Examples of such thick-and-thin fancy yarns include the thick-and-thin fancy yarn with thick sections in the yarn waveform and random thick sections between individual fibers, as described in Japanese Patent Application Publication No. 2000-234232, and the thick-and-thin fancy yarn obtained by uneven stretching using a frictional resistance body, as described in Japanese Patent Application Publication No. Hei 7-324237.

[0021] On the other hand, as a crimped yarn, it can be a crimped yarn that reveals the potential crimp of the parallel composite fibers, but false twist crimped yarn is preferred.

[0022] The polymers used to form the aforementioned coarse and fine fancy yarns and / or crimped yarns are preferably polyesters or aliphatic polyamides (nylon 6, nylon 66, etc.). More preferably are examples of polyethylene terephthalate, polyethylene terephthalate, polybutylene terephthalate, polylactic acid, and polyesters copolymerized with a third component. The polyesters described above can be recycled or chemically recycled polyesters. Furthermore, polyesters obtained using catalysts containing specific phosphorus and titanium compounds, as described in Japanese Patent Application Publication Nos. 2004-270097 and 2004-211268, can be used. Without prejudice to the purpose of this invention, the polymer may contain one or more of the following as needed: a micropore forming agent, a cationic dyeing agent, an anti-coloring agent, a heat stabilizer, a fluorescent whitening agent, a matting agent, a coloring agent, a hygroscopic agent, and inorganic microparticles. In particular, if the product contains a matting agent at a weight of 0.1% or more (more preferably 0.3 to 2.0% by weight) relative to the polymer weight, the impermeability is improved, and therefore it is preferred. Specifically, semi-matte polyester and fully matte polyester are preferred. In addition, if the product contains a cationic dyeable agent (such as an ester-forming sulfonate metal salt compound), acid treatment as described in International Publication No. 2011 / 048888 can add antibacterial and deodorizing properties, and therefore it is preferred.

[0023] Furthermore, in the aforementioned coarse-fine fancy yarns, the total fineness is preferably 22 to 400 dtex (more preferably 30 to 60 dtex). Additionally, the fineness of a single fiber is preferably 1.5 dtex or more (more preferably 1.5 to 3.0 dtex). Furthermore, the number of filaments is preferably 12 to 200 (more preferably 20 to 60).

[0024] Furthermore, in terms of obtaining an excellent cotton-like appearance and anti-snagging properties, the total fineness of the aforementioned crimped yarn is preferably smaller than that of the aforementioned coarse-fine fancy yarn. The total fineness is particularly preferably 18–333 dtex (more preferably 20–50 dtex). Additionally, the fineness of individual fibers is preferably 1.0 dtex or less (more preferably 0.1–1.0 dtex). Furthermore, the number of filaments is preferably 12–200 (more preferably 20–60). Additionally, the crimp rate is preferably in the range of 2–40% (more preferably 5–35%).

[0025] The composite yarn of the present invention is preferably composed only of the aforementioned coarse and fine fancy yarns and crimped yarns, but may contain other fibers. Furthermore, the composite method is not particularly limited, but it is preferable to perform an interlacing process (air-blending process) by combining the aforementioned coarse and fine fancy yarns and crimped yarns.

[0026] At this point, the number of interlacings is preferably 200 or less per m (more preferably 120 or less per m, and particularly preferably 20 to 120 per m).

[0027] Furthermore, in the composite yarn, it is preferable that the thick and thin fancy yarns are interwoven with the crimped yarn, or that the non-coiled portion where the thick and thin fancy yarns are located in the core and the crimped yarns are located in the sheath is mixed with the coiled portion where the thick and thin fancy yarns and the crimped yarns are coiled. It should be noted that the above-mentioned composite yarn is obtained, for example, by the following method: according to the method described in Example 1 of Japanese Patent Application Publication No. 2000-234232, after obtaining a thick and thin fancy yarn with thick sections having a woven yarn waveform and random thick sections between individual fibers, the thick and thin fancy yarn is coiled with the crimped yarn and interwoven.

[0028] In this composite yarn, the non-doped portion is preferably 40-95% relative to the length of the composite yarn. Conversely, the doped portion is preferably 5-40% relative to the length of the composite yarn. These ratios are calculated by taking 10 composite yarns (20cm) from the fabric, calculating their respective ratios relative to the composite yarn (20cm), and then averaging the results of the 10 yarns.

[0029] The fabric of the present invention comprises the aforementioned composite yarn. The fabric structure is not limited and can be any structure woven using conventional methods. Examples of woven structures include plain weave, twill weave, satin weave, and other three-part weaves; varied weaves, such as twill variation weaves; single-sided double weaves, such as warp double weave and weft double weave; and warp pile weaves. Examples of knitted fabrics include half-weave weaves using plain knit, two-piece or three-piece reeds, half-weave base weaves, and satin weaves. From the perspective of water absorption and quick-drying properties, knitted fabrics with a density of 35–100 weft / 2.54 cm and 30–100 warp / 2.54 cm are particularly preferred.

[0030] In addition, the preferred weight per unit area of ​​the fabric is 70–130 g / m². 2 Within the range.

[0031] The aforementioned fabrics can be further processed with dyeing, water absorption, embossing, color printing, waterproofing, and the addition of functions such as UV blocking agents, antibacterial agents, deodorizing agents, insect repellents, light-emitting agents, retroreflective agents, and negative ion generators.

[0032] The resulting fabric possesses excellent cotton-like appearance, superior texture, snag resistance, breathability, and quick-drying properties. Furthermore, a 15-hour hacksaw test using the JIS L 1058-1995 D3 method yields a snag resistance rating of at least level 3.

[0033] Next, the fiber articles of the present invention are made using the above-mentioned fabrics and are selected from any one of sportswear, outerwear, underwear, men's clothing, women's clothing, nursing clothing, work clothes, car seat upholstery materials and bedding.

[0034] Because the aforementioned fiber products use the aforementioned fabrics, they have excellent cotton-like appearance, anti-snagging properties, breathability, and quick-drying and water-absorbing properties.

[0035] Example

[0036] The present invention will now be described in detail with reference to specific embodiments, but the present invention is not limited to these embodiments at all.

[0037] (1) Weight per unit area

[0038] The basis weight (g / m²) of woven fabrics was determined according to JIS L1096-2010. 2 ).

[0039] (2) Anti-snagging properties

[0040] The hacksaw was tested for 15 hours using the JIS L 1058-1995 D3 method.

[0041] (3) Curl rate

[0042] The shrinkage rate was determined using the following method.

[0043] That is, the test filament yarn is wound around a measuring device with a circumference of 1.125m to prepare a skein with a dry fineness of 3333dtex.

[0044] The aforementioned skein was suspended from the pins of a graduated plate, and an initial load of 6g was applied to its lower part. The length L0 of the skein was measured when a further load of 600g was applied. Immediately afterwards, the load was removed from the skein, and it was taken off the pins of the graduated plate. The skein was then immersed in boiling water for 30 minutes, resulting in shrinkage. The skein treated with boiling water was removed from the boiling water, and the moisture contained in the skein was absorbed using filter paper. It was then air-dried at room temperature for 24 hours. The air-dried skein was suspended from the pins of the graduated plate, and a load of 600g was applied to its lower part. The length L1a of the skein was measured after 1 minute. The load was then removed from the skein, and the length L2a of the skein was measured after 1 minute. The shrinkage rate (CP) of the tested filament yarn was calculated using the following formula.

[0045] CP (%) = ((L1a-L2a) / L0)×100

[0046] (4) Interlacing degree

[0047] Take a 1m length of the interlaced yarn under a load of 8.82mN × nominal tex (0.1g / de), deweight it, and read the number of knots after 24 hours of expansion and contraction at room temperature, expressed as knots / m.

[0048] (5) The ratio of non-doped yarn to doped yarn in composite yarn

[0049] Take 10 strands of composite yarn (20cm) from the fabric, calculate the ratio of each strand to the total composite yarn (20cm), and then calculate the average value of the 10 strands.

[0050] (6) Short fiber appearance

[0051] The appearance of the short fibers was evaluated based on visual observation by the test subjects, using three levels: "〇" (excellent), "△" (average), and "×" (poor).

[0052] [Examples 1-5, Comparative Examples 1-2]

[0053] According to the method described in Example 1 of Japanese Patent Application Publication No. 2000-234232, a non-cuffed, fine-line yarn with thick sections and random thick sections between individual fibers, as shown in Table 1, was obtained. In Examples 1-5, false-twist, cuffed yarns as shown in Table 1 were obtained using conventional methods. It should be noted that in Table 1, "FD" represents chemically recycled fully dull polyester, "SD" represents chemically recycled semi-dull polyester, and "CD" represents chemically recycled cationic dyeable polyester. Additionally, for example, "44T36" refers to a total fineness of 44 dtex and a filament count of 36.

[0054] Next, in Examples 1-5, coarse and fine detail fancy yarns and false twisted and shredded yarns are spun together and interwoven to obtain composite yarns in which the coarse and fine detail fancy yarns and shredded yarns are interwoven, or where the coarse and fine detail fancy yarns are located in the core and the shredded yarns are located in the sheath, and the coarse and fine detail fancy yarns and shredded yarns are spun together in a spun-yarn configuration. Then, knitted fabrics are obtained using the circular knitting machine shown in Table 1.

[0055] In Example 1, the non-parallel wire portion was 74%, and the parallel wire portion was 26%. The evaluation results of Examples 1-5 and Comparative Examples 1-2 are shown in Table 1.

[0056]

[0057] Industrial availability

[0058] According to the present invention, composite yarns, fabrics and fiber products with excellent cotton-like appearance, texture and anti-snagging properties, preferably also with excellent impermeability and quick-drying and water-absorbing properties can be provided, which have great industrial value.

Claims

1. A fiber product, selected from sportswear, outerwear, underwear, men's clothing, and women's clothing, and made of fabric, characterized in that, The fabric contains composite yarn. The composite yarn comprises coarse and fine fancy yarns and crimped yarns. The thick-thickness fancy yarn is a non-crimped yarn with thick sections of woven yarn waveform and random thick sections between individual fibers. The composite yarn contains the aforementioned coarse and fine fancy yarns in a range of 30 to 85% by weight relative to the weight of the composite yarn; In the composite yarn, the non-parallel section, in which the thick and thin fancy yarns are located in the core and the crimped yarn is located in the sheath, is mixed with the parallel section, which is formed by the thick and thin fancy yarns and the crimped yarn. Relative to the length of the composite yarn, the non-parallel section is 40-95% and the parallel section is 5-40%. The content of matting agent in the thick and thin fancy yarns and / or crimped yarns is 0.1% by mass or more; The fineness of the single fiber of the thick and thin fancy yarn is above 1.0 dtex, and the fineness of the single fiber of the crimped yarn is below 1.5 dtex. The fabric is a knitted fabric with a density of 35-100 weft / 2.54cm and 30-100 warp / 2.54cm; The coarse and fine fancy yarns and crimped yarns are made of chemically or materially recycled polyester fibers; The fabric was tested with a hacksaw for 15 hours using the JIS L 1058-1995 D3 method, and its anti-snagging property was rated as level 3 or above.

2. The fiber product according to claim 1, wherein, In composite yarns, interlacing is carried out with an interlacing number of less than 120 interlacings per meter.

3. The fiber product according to claim 1, wherein, The coarse and fine fancy yarns and / or crimped yarns are made of cationic dyeable polyester.

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