Knitted fabric and fiber product

Abstract

The present invention addresses the problem of providing a knitted fabric and a fiber product having a soft suede texture and excellent snagging resistance, and provides a knitted fabric comprising a core-sheath blended yarn in which the core part of the blended yarn is a non-crimped multifilament and the yarn length difference between the core part and the sheath part is 25% or more.

Description

Technical Field

[0001] The present invention relates to a knitted fabric and a fiber product that contain a core-sheath type conjugate fiber yarn and have excellent soft suede-like touch and snag resistance. Background Art

[0002] Conventionally, a polyester-based conjugate fiber yarn composed of at least two filament yarns that is soft and silky and has a high bulkiness (Patent Document 1), or a composite interlaced yarn that can obtain a suede-like fabric that is difficult to produce fingerprints or oiliness and has a soft suede-like touch and a varied appearance (Patent Document 2) have been proposed.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent Laid-Open No. 7-331545

[0006] Patent Document 2: Japanese Patent Laid-Open No. 2003-342846 Summary of the Invention

[0007] An object of the present invention is to provide a knitted fabric and a fiber product that contain a core-sheath type conjugate fiber yarn and have excellent soft suede-like touch and snag resistance.

[0008] The inventors of the present invention conducted in-depth research to achieve the above problems, and as a result, completed the present invention. Thus, the following present invention is provided.

[0009] 1. A knitted fabric, characterized in that it is a knitted fabric containing a core-sheath type conjugate fiber yarn, the core part of the conjugate fiber yarn is a non-crimped multifilament, and the difference in yarn length between the core part and the sheath part is 25% or more.

[0010] 2. The knitted fabric according to 1 above, wherein the sheath part of the conjugate fiber yarn is a non-crimped multifilament.

[0011] 3. The knitted fabric according to 1 or 2 above, wherein the density of the knitted fabric is in the range of 80 to 150 courses / 2.54 cm and 60 to 120 wales / 2.54 cm.

[0012] 4. The knitted fabric according to any one of 1 to 3 above, wherein the knitted fabric is a circular knitted fabric.

[0013] 5. The knitted fabric according to any one of 1 to 4 above, wherein both the core part and the sheath part are composed of polyester fibers.

[0014] 6. The knitted fabric according to any one of 1 to 5 above, wherein the core part is composed of cation-dyeable polyester fibers.

[0015] 7. The knitted fabric according to any one of 1 to 6 above, wherein the single fiber fineness of the sheath part is 0.8 dtex or less.

[0016] 8. The knitted fabric according to any one of 1 to 7 above, wherein in the conjugate fiber yarn, both the core part and the sheath part are multifilaments having 20 to 200 filaments.

[0017] 9. The knitted fabric according to any one of 1 to 8 above, wherein the conjugate fiber yarn is subjected to interlacing processing of 30 or more per meter.

[0018] 10. The knitted fabric according to any one of 1 to 9 above, wherein the knitted fabric further contains elastic fibers.

[0019] 11. The knitted fabric according to any one of 1 to 10 above, wherein the snag resistance of the knitted fabric is grade 3 or more.

[0020] 12. A fiber product which is any one selected from sportswear, outerwear, underwear, men's clothing, women's clothing, clothing for nursing, work clothing, automotive seat upholstery materials, and bedding, and which uses the knitted fabric according to any one of 1 to 11 above.

[0021] According to the present invention, a knitted fabric and a fiber product can be obtained which contain a core-sheath conjugate fiber yarn, have a soft suede-like touch, and excellent snag resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a knitting pattern (double rib) used in Examples 1 and 2 and Comparative Examples 1 and 2.

[0023] Figure 2 It is a knitting pattern (plain stitch) used in Examples 3 and 4.

[0024] Figure 3 It is a knitting pattern (open stitch) used in Examples 5 and 6. DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, embodiments of the present invention will be described in detail. First, the knitted fabric of the present invention contains a core-sheath conjugate fiber yarn, and the core part of the conjugate fiber yarn is composed of a non-crimped multifilament (a yarn to which no crimping is given, hereinafter sometimes also referred to as a "non-crimped yarn"). If a crimped yarn such as a false twist crimped yarn is arranged in the core part, there is a concern that the yarn length difference between the core part and the sheath part cannot be increased.

[0026] It should be noted that "non-crimped" means that no crimping such as false twist crimping is given, and the crimp rate measured by the following method is 5% or less (most preferably 0%).

[0027] (Method for measuring crimp rate)

[0028] Wind the test yarn around a yarn length measuring instrument with a circumference of 1.125 m to prepare hank yarn with a dry fineness of 3333 dtex. Suspend the above-mentioned hank yarn on the hanging pin of the scale board, attach an initial load of 6 g to its lower part, and then measure the length L0 of the hank yarn when a load of 600 g is added. Then, immediately remove the load from the above-mentioned hank yarn, take it off from the hanging pin of the scale board, immerse the hank yarn in boiling water for 30 minutes to make it curl. Take out the hank yarn after the boiling water treatment, absorb and remove the moisture contained in the hank yarn with filter paper, and air-dry it at room temperature for 24 hours. Suspend the air-dried hank yarn on the hanging pin of the scale board, apply a load of 600 g to its lower part, measure the length L1a of the hank yarn after 1 minute, then remove the load from the hank yarn, and measure the length L2a of the hank yarn after 1 minute. Calculate the crimp percentage (CP) of the test filament yarn using the following formula.

[0029] CP(%) = ((L1a - L2a) / L0) × 100

[0030] In the above-mentioned conjugate fiber yarn, the sheath part is preferably a non-crimped multifilament, but it can also be a false twist crimped yarn.

[0031] In the above-mentioned conjugate fiber yarn, the total fineness is preferably in the range of 50 to 120 dtex (more preferably 50 to 100 dtex). If the total fineness of the conjugate fiber yarn is less than the above range, there is a concern that snagging is likely to occur due to the decrease in the density of the knitted fabric. On the contrary, if it exceeds the above range, the texture of the knitted fabric becomes hard, and there is a concern that the weight per unit area also becomes too large.

[0032] In addition, among the multifilaments arranged in the core part and / or sheath part of the above-mentioned conjugate fiber yarn, the number of filaments is preferably in the range of 20 to 200.

[0033] As the function of the sheath part of the conjugate fiber yarn, when the core yarn shrinks significantly through heat treatment, the sheath yarn expands into a mini-pile shape, thereby attaching a soft suede-like touch to the knitted fabric in a non-fuzzing state. In order to achieve a soft suede-like touch, the single fiber fineness of the multifilament arranged in the sheath part is preferably 0.8 dtex or less (more preferably 0.0001 to 0.5 dtex). The cross-sectional shape of the fiber constituting the sheath part is not particularly limited, but in terms of making the knitted fabric present a soft suede touch in a non-fuzzing state, a circular cross-section is preferred. In the case of an irregular cross-section, it can be any one of triangle, flat, flat with a constricted neck, Y-shaped, W-shaped, cross-shaped, etc.

[0034] On the other hand, as the function of the core part, it shrinks significantly through heat treatment, making the sheath yarn into a high-density small pile structure to present a soft suede-like touch. Moreover, by increasing the density of the knitted fabric and suppressing the elongation rate of the knitted fabric, the snag resistance is maintained. From the aspect of shrinkage force, the single fiber fineness of the non-crimp yarn arranged in the core part is preferably 0.5 dtex or more, more preferably in the range of 0.9 to 2.2 dtex. When the single fiber fineness is less than the above range, although the texture becomes soft, there is a concern that the shrinkage force becomes insufficient. On the other hand, when it is greater than the above range, the texture becomes hard, and there is a concern that it is difficult to obtain the target knitted fabric. The cross-sectional shape of the fiber constituting the core part is not particularly limited, and it can be a circular cross-section or the above-mentioned modified cross-section.

[0035] As the type of polymer forming the multifilament arranged in the above-mentioned core part and / or sheath part, polyester and aliphatic polyamides (such as nylon 6 and nylon 66) are preferred. Among them, polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polylactic acid, and polyesters copolymerized with a third component are more preferably exemplified. As this polyester, it can be a polyester obtained through material recycling or chemical recycling. Moreover, it is a polyester obtained by using a catalyst containing a specific phosphorus compound and titanium compound as described in Japanese Patent Application Laid-Open No. 2004-270097 and Japanese Patent Application Laid-Open No. 2004-211268. In this polymer, within the range not impairing the object of the present invention, one or two or more microporous forming agents, cationic dyeable agents, anti-coloring agents, heat stabilizers, fluorescent brighteners, delustering agents, coloring agents, moisture absorbers, and inorganic fine particles can be contained as needed. In particular, if it contains a delustering agent of 0.1% by weight or more (more preferably 0.3 to 2.0% by weight) based on the weight of the polymer, the anti-transparency is improved, so it is preferred. Specifically, semi-dull polyester, full-dull polyester, and cationically dyeable polyester are preferred. If a cationic dyeable agent (such as an ester-forming sulfonic acid metal salt compound) is contained in the polyester, it is preferably provided with antibacterial and deodorant properties through acid treatment as described in International Publication Pamphlet No. 2011 / 048888. In addition, it is preferred to obtain a spun appearance due to the difference in dyeing by making the dyeability of the core part and the sheath part different.

[0036] As a method for manufacturing the knitted fabric of the present invention, first, a non-crimp yarn for the core part and a multifilament for the sheath part are prepared. At this time, in terms of making the blended yarn into a core-sheath structure, the boiling water shrinkage rate of the core part needs to be larger than that of the sheath part. For example, as the non-crimp yarn for the core part, polyester undrawn yarn (UDY) and polyester partially oriented yarn (POY) after cold drawing have a large boiling water shrinkage rate, so they are preferred.

[0037] Next, the core non-crimp yarn and the sheath multifilament are combined, and a mixed yarn is obtained by an air mixing method such as interlacing processing or a twisting method. It is particularly preferable to apply interlacing processing of 30 or more per meter (more preferably 60 to 200 per meter).

[0038] From the aspect of the snag resistance of the knitted fabric, the boiling water shrinkage rate (BWS) of the mixed yarn is preferably 40% or more (more preferably 40 to 60%). If the boiling water shrinkage rate (BWS) is less than 40%, the mixed yarn cannot shrink sufficiently in the dyeing process, and as a result, the density of the knitted fabric becomes low. Therefore, when the knitted fabric is caught by something sharp, the yarn will be pulled out, and there is a concern that the snag resistance will decrease. On the other hand, if the boiling water shrinkage rate (BWS) is greater than 60%, the shrinkage of the mixed yarn becomes large in the dyeing process, so the density of the knitted fabric becomes high. As a result, although the snag resistance is improved, there is a concern that the texture becomes too hard.

[0039] The knitted fabric of the present invention may contain not only the above-mentioned mixed yarn but also stretch fibers. At this time, as the stretch fiber, in terms of good stretchability and recovery, false twist crimped yarns, latent crimped yarns, elastic yarns, etc. are preferred. Here, the elastic yarn can be any one of urethane-based and ester-based. It should be noted that the knitted fabric may be composed only of the above-mentioned mixed yarn and stretch fiber, and may further contain other yarns such as non-crimp yarns or textile yarns.

[0040] Next, after obtaining a knitted fabric by knitting using the above-mentioned mixed yarn, dyeing processing and water absorption processing are appropriately carried out to obtain a knitted fabric. Through a heat history such as dyeing processing, the core non-crimp yarn contained in the mixed yarn shrinks significantly, and the mixed yarn becomes a core-sheath type. At this time, it is important that the yarn length difference between the core and the sheath contained in the mixed yarn is 25% or more (more preferably 25 to 80%). When the yarn length difference is less than 25%, the fluff in the mixed yarn disappears. For example, when making a knitted fabric, the gap between the knitting loops becomes large and it becomes easy to catch, and there is a concern that the snag resistance decreases. In addition, in order to make the yarn length difference between the core and the sheath contained in the mixed yarn 25% or more, for example, as the core non-crimp yarn, a yarn obtained by cold stretching a polyester undrawn yarn (UDY) or a polyester partially oriented yarn (POY) is used. On the other hand, as the sheath multifilament, a non-crimp multifilament obtained by spinning and stretching (hot stretching) polyester by a conventional method or a false twist crimped yarn obtained by DTY processing of a polyester partially oriented yarn (POY) can be used.

[0041] It should be noted that as a method for measuring the yarn length difference between the core part and the sheath part, for example, the following method can be exemplified. First, a tubular knitted fabric is knitted using a blended yarn. After performing a dyeing process, the above tubular knitted fabric is immersed in an aqueous sodium hydroxide solution, heated, and then dried, thereby reducing the weight of the core yarn. Then, a specified load is applied to and measured for the length (L1) of a specified wale of the blended yarn extracted from the tubular knitted fabric before weight reduction and the length (L2) of the same wale of the blended yarn extracted from the tubular knitted fabric after weight reduction, and the yarn length difference is calculated using the following formula.

[0042] Yarn length difference (%) = (L2 - L1) / L1 × 100

[0043] Next, a knitted fabric is obtained using the above blended yarn and other yarns (stretch fibers, non-crimp yarns, etc.) as required. At this time, the structure of the knitted fabric is not particularly limited. For example, in circular knitting, plain stitch, tuck stitch, rib stitch, circular rib stitch, intarsia pattern, plating stitch, side joining, single-side joining, etc. can be exemplified, and in warp knitting, knitted fabrics having knitting structures such as tricot stitch, half tricot, satin stitch, and velvet stitch can be exemplified, but it is not limited to these. The number of layers can be single layer or multiple layers of 2 layers or more.

[0044] It is particularly preferred to knit the above core-sheath type blended yarn and the above stretch fiber by plating knitting (plating stitch). For example, when the above blended yarn and a stretch fiber (elastic yarn, etc.) are knitted into a plain knitted fabric (bare plain knitted fabric) by plating knitting (plating stitch), compared with the loops formed by the blended yarn, the loops formed by the stretch fiber (elastic yarn, etc.) are formed smaller. Since almost all of the stretchability of the knitted fabric is contributed by the stretch fiber (elastic yarn, etc.), the small pile structure of the blended yarn is maintained without being damaged, and not only can it have a soft suede-like touch, but also can have good stretchability and recovery.

[0045] The weight per unit area of the knitted fabric is not particularly limited, but from the viewpoint of softness and also considering the use, it is preferably 80 to 300 g / m 2 . If the weight per unit area of the knitted fabric is less than 80 g / m 2 , it is also not preferred from the viewpoints such as the breaking strength for shirt use. In addition, if the weight per unit area of the knitted fabric exceeds 300 g / m 2 , there is a concern that it will become too heavy as clothing (fabric).

[0046] In addition, in terms of the soft suede-like touch and snag resistance, the density of the knitted fabric is preferably in the range of 80 to 150 courses / 2.54 cm and 60 to 120 wales / 2.54 cm. If the density of the knitted fabric is less than the above range, although the texture becomes soft, there is a concern that the snag resistance may decrease. In addition, if the density of the knitted fabric is above the above range, although the snag resistance improves, there is a concern that the texture may become hard.

[0047] Here, as the snag resistance, through the hacksaw test of JIS L1058-2021 D3 method for 5 hours, it is preferably 3 or more (more preferably 4 or more) for both warp and weft.

[0048] In addition, as the elongation rate of the above knitted fabric, in the case of not containing stretch fibers, it is preferably 25% or less (more preferably 1 to 25%) in the warp direction and 45% or less (more preferably 1 to 45%) in the weft direction. On the other hand, in the case where the knitted fabric contains stretch fibers, the elongation rate of the knitted fabric is preferably 30% or more (more preferably 30 to 150%) in the warp direction and 50% or more (more preferably 30 to 150%) in the weft direction. In addition, the recovery rate of the above knitted fabric is preferably 90% or more in both the warp and weft directions.

[0049] Due to having the above-mentioned constitution, the knitted fabric of the present invention is excellent in both soft suede-like touch and snag resistance. Moreover, it also has a fabric-like appearance.

[0050] Next, the fiber product of the present invention is any one of fiber products selected from sportswear, outerwear, underwear, men's clothing, women's clothing, nursing clothing, work clothing, automotive seat upholstery materials, and bedding, which is made of the above-mentioned knitted fabric.

[0051] Since this fiber product uses the above-mentioned knitted fabric, it is excellent in both soft suede-like touch and snag resistance. Moreover, it also has a fabric-like appearance.

[0052] Examples

[0053] Next, examples are given to illustrate the present invention in detail, but the present invention is not limited by any of these. It should be noted that each physical property in the examples was measured by the following methods.

[0054] (1) Weight per unit area

[0055] It was measured according to JIS L1096-2010 8.3.

[0056] (2) Snag resistance

[0057] It was tested with a hacksaw for 5 hours according to the D3 method of JIS L1058-2021.

[0058] (3) Yarn length difference

[0059] After knitting a cylinder knitted fabric with the mixed fiber yarn, dyeing process is carried out. Then, 3.75 g of the above-mentioned cylinder knitted fabric is immersed in 250 ml of an aqueous sodium hydroxide solution at 50 g / L, heated at 2 °C / minute, kept at 80 °C for 270 minutes, and then dried, thereby reducing the core yarn weight. Then, a load of 3.6 g is applied to the length (L1) of 50 wales of the mixed fiber yarn extracted from the cylinder knitted fabric before weight reduction and the length (L2) of 50 wales of the mixed fiber yarn extracted from the cylinder knitted fabric after weight reduction, and the measurement is carried out. The yarn length difference is calculated by the following formula.

[0060] Yarn length difference (%) = (L2 - L1) / L1 × 100

[0061] (4) Intertwining degree

[0062] The entangled yarn is obtained with a length of 1 m under a load of 8.82 mN × shown tex (0.1 g / de). After removing the weight, the number of knot nodes after shrinkage and expansion at room temperature for 24 hours is read and expressed in pieces / m.

[0063] (5) Boiling water shrinkage rate (BWS)

[0064] The BWS (%) is measured by the JIS L1013 - 2021 8.18B method.

[0065] (6) Elongation rate

[0066] The measurement is carried out by using the JIS L1096 - 2010 8.16.1D method (constant load method for knitted fabrics).

[0067] (7) Texture

[0068] It is evaluated in three grades: excellent (3 points), ordinary (2 points), and poor (1 point) with the score of the soft suede touch.

[0069] [Example 1]

[0070] As the cation - dyeable polyester, it is composed of polyethylene terephthalate copolymerized with 1.5 mol% of sodium 5 - sulfoisophthalate, and the cation - dyeable POY (partially oriented yarn) with a total fineness of 56 dtex / 36 filaments, a breaking strength of 2.0 cN / dtex, and a breaking elongation rate of 148% is cold - drawn at a draw ratio of 1.6 times to obtain a yarn (non - crimped yarn, total fineness 33 dtex / 36 filaments), which is combined with a semi - dull polyethylene terephthalate drawn yarn with a circular cross - section (non - crimped yarn, total fineness 33 dtex / 72 filaments), with 2% overfeed applied, and then intertwined to obtain a mixed fiber yarn with a yarn length difference of 38% (total fineness 66 dtex / 108 filaments, intertwining degree 106 pieces / m).

[0071] Next, a double circular knitting machine with a 36-gauge is used to knit a circular knitted fabric with a rib stitch using the above-mentioned mixed fiber yarn (blending ratio: 100%).

[0072] Next, the knitted fabric is dyed using disperse dyes at a temperature of 130°C for a holding time of 30 minutes. At this time, a hydrophilizing agent (polyethylene terephthalate-polyethylene glycol copolymer emulsion) is added to the dye bath at a ratio of 2 ml / liter relative to the dye liquor during the dyeing process, thereby imparting the hydrophilizing agent to the knitted fabric. Then, the circular knitted fabric is subjected to dry heat final setting at a temperature of 160°C for 1 minute.

[0073] The obtained knitted fabric is composed of a core-sheath type mixed fiber yarn with a non-crimped multifilament in the core and sheath parts, and has a soft suede-like touch and a fabric-like appearance, and also has snag resistance. The evaluation results are shown in Table 1.

[0074] [Example 2]

[0075] As the cation-dyeable polyester, it is composed of polyethylene terephthalate copolymerized with 1.5 mol% of sodium 5-sulfoisophthalate and the ethylene glycol component and terephthalic acid component are obtained by chemical recycling. A cation-dyeable POY (partially oriented yarn) with a total fineness of 56 dtex / 36 filaments, a breaking strength of 2.0 cN / dtex, and an elongation at break of 150% is cold drawn at a draw ratio of 1.6 times to obtain a yarn (non-crimped yarn, total fineness 33 dtex / 36 filaments), which is combined with a semi-dull polyethylene terephthalate drawn yarn with a circular cross-section (non-crimped yarn, total fineness 22 dtex / 72 filaments), and 2% overfeed is applied for interlacing processing to obtain a mixed fiber yarn with a yarn length difference of 40% (56 dtex / 108 filaments, interlacing degree 118 pieces / m).

[0076] Next, a double circular knitting machine with a 36-gauge is used to knit a circular knitted fabric with a rib stitch using the above-mentioned mixed fiber yarn (blending ratio: 100%).

[0077] Next, the knitted fabric is dyed using disperse dyes at a temperature of 130°C for a holding time of 15 minutes. At this time, a hydrophilizing agent (polyethylene terephthalate-polyethylene glycol copolymer emulsion) is added to the dye bath at a ratio of 2 ml / liter relative to the dye liquor during the dyeing process, thereby imparting the hydrophilizing agent to the knitted fabric. Then, the circular knitted fabric is subjected to dry heat final setting at a temperature of 160°C for 1 minute.

[0078] The obtained knitted fabric is composed of a core-sheath type mixed fiber yarn with a non-crimped multifilament in the core and sheath parts, and has a soft suede-like touch and a fabric-like appearance, and also has snag resistance. The evaluation results are shown in Table 1.

[0079] [Example 3]

[0080] As the cation-dyeable polyester, it is composed of polyethylene terephthalate copolymerized with 1.6 mol% of sodium 5-sulfoisophthalate, and the cation-dyeable POY (partially oriented yarn) with a total fineness of 56 dtex / 36 filaments, a breaking strength of 2.4 cN / dtex, and an elongation at break of 128% is cold-drawn at a draw ratio of 1.6 times to obtain a yarn (non-crimped yarn, total fineness 33 dtex / 36 filaments), which is combined with a semi-dull polyethylene terephthalate drawn yarn with a circular cross-section (non-crimped yarn, total fineness 33 dtex / 72 filaments), with a 2% overfeed applied, and then interlaced to obtain a mixed-filament yarn with a yarn length difference of 33% (total fineness 66 dtex / 108 filaments, interlace degree 106 per m).

[0081] Next, using a single circular knitting machine with a 46-gauge, a plain-knit circular knitted fabric of the above-mentioned mixed-filament yarn (blending ratio: 100%) is knitted.

[0082] Then, the knitted fabric is dyed using disperse dyes at a temperature of 130 °C for a holding time of 30 minutes. At this time, a hydrophilizing agent (polyethylene terephthalate - polyethylene glycol copolymer emulsion) is bath-treated in the same bath at a ratio of 2 ml / L with respect to the dye liquor during the dyeing process, thereby imparting the hydrophilizing agent to the knitted fabric. Then, dry heat final setting is performed on the circular knitted fabric at a temperature of 160 °C for 1 minute.

[0083] The obtained knitted fabric is composed of a core-sheath type mixed-filament yarn with a non-crimped multifilament in the core and sheath parts, has a soft suede-like touch and a fabric-like appearance, and also has snag resistance. The evaluation results are shown in Table 1.

[0084] [Example 4]

[0085] As the cation-dyeable polyester, it is composed of polyethylene terephthalate copolymerized with 1.5 mol% of sodium 5-sulfoisophthalate and the ethylene glycol component and terephthalic acid component are components obtained by chemical recycling, and the cation-dyeable POY (partially oriented yarn) with a total fineness of 56 dtex / 36 filaments, a breaking strength of 2.0 cN / dtex, and an elongation at break of 150% is cold-drawn at a draw ratio of 1.6 times to obtain a yarn (non-crimped yarn, total fineness 33 dtex / 36 filaments), which is combined with a semi-dull polyethylene terephthalate drawn yarn with a circular cross-section (non-crimped yarn, total fineness 22 dtex / 72 filaments), with a 2% overfeed applied, and then interlaced to obtain a mixed-filament yarn with a yarn length difference of 35% (56 dtex / 108 filaments, interlace degree 118 per m).

[0086] Next, a single circular knitting machine with a 46 - gauge is used to knit a circular knitted fabric with a plain stitch using the above - mentioned mixed fiber yarn (mixing ratio: 100%).

[0087] Next, the knitted fabric is dyed using disperse dyes at a temperature of 130°C for a holding time of 15 minutes. At this time, a hydrophilizing agent (polyethylene terephthalate - polyethylene glycol copolymer emulsion) is added to the dye bath at a ratio of 2 mL / L relative to the dye solution during the dyeing process, thereby imparting the hydrophilizing agent to the knitted fabric. Then, dry heat final setting is performed on the circular knitted fabric at a temperature of 160°C for 1 minute.

[0088] The obtained knitted fabric is composed of a core - sheath type mixed fiber yarn with a non - crimped multifilament in the core and sheath parts, has a soft suede - like touch and a fabric - like appearance, and also has snag - resistance. The evaluation results are shown in Table 1.

[0089]

[0090] [Example 5]

[0091] As the cation - dyeable polyester, it is composed of polyethylene terephthalate copolymerized with 1.6 mol% of sodium 5 - sulfoisophthalate. A cation - dyeable POY (partially oriented yarn) with a total fineness of 56 dtex / 36 filaments, a breaking strength of 2.4 cN / dtex, and an elongation at break of 128% is cold - drawn at a draw ratio of 1.6 times to obtain a yarn (non - crimped yarn, total fineness 33 dtex / 36 filaments), which is combined with a semi - dull polyethylene terephthalate drawn yarn with a circular cross - section (non - crimped yarn, total fineness 33 dtex / 72 filaments), with 2% overfeed applied, and then interlaced to obtain a mixed fiber yarn with a yarn length difference of 28% (66 dtex / 108 filaments, interlacing degree 106 per m, interlacing degree 106 per m).

[0092] Next, a single circular knitting machine with a 60 - gauge is used to knit a circular knitted fabric with an empty - needle stitch using the above - mentioned mixed fiber yarn (mixing ratio: 100%).

[0093] Then, the knitted fabric is dyed using disperse dyes at a temperature of 130°C for a holding time of 30 minutes. At this time, a hydrophilizing agent (polyethylene terephthalate - polyethylene glycol copolymer emulsion) is added to the dye bath at a ratio of 2 mL / L relative to the dye solution during the dyeing process, thereby imparting the hydrophilizing agent to the knitted fabric. Then, dry heat final setting is performed on the circular knitted fabric at a temperature of 160°C for 1 minute.

[0094] The obtained knitted fabric is composed of a core - sheath type mixed fiber yarn with a non - crimped multifilament in the core and sheath parts, has a soft suede - like touch and a fabric - like appearance, and also has snag - resistance. The evaluation results are shown in Table 2.

[0095] [Example 6]

[0096] As the cation-dyeable polyester, it is composed of polyethylene terephthalate copolymerized with 1.5 mol% of sodium 5-sulfoisophthalate and the ethylene glycol component and terephthalic acid component are obtained by chemical recycling. And the cation-dyeable POY (partially oriented yarn) with a total fineness of 56 dtex / 36 filaments, a breaking strength of 2.0 cN / dtex, and an elongation at break of 150% is cold drawn at a draw ratio of 1.6 times (non-crimped yarn, total fineness 33 dtex / 36 filaments), and it is combined with a semi-dull polyethylene terephthalate drawn yarn with a circular cross-section (non-crimped yarn, total fineness 22 dtex / 72 filaments), with 2% overfeed applied, and interlacing processing is carried out to obtain a mixed fiber yarn with a yarn length difference of 30% (56 dtex / 108 filaments, interlacing degree 118 per m).

[0097] Next, using a single circular knitting machine with a 60 gauge, a circular knitted fabric with an empty needle pattern is knitted with the above-mentioned mixed fiber yarn (blending ratio: 100%).

[0098] Next, using disperse dyes, the knitted fabric is dyed at a temperature of 130 °C for a holding time of 15 minutes. At this time, by treating the hydrophilic agent (polyethylene terephthalate - polyethylene glycol copolymer emulsion) in the same bath during the dyeing process at a ratio of 2 ml / l relative to the dye solution, the knitted fabric is given the hydrophilic agent. Then, the circular knitted fabric is subjected to dry heat final setting at a temperature of 160 °C for 1 minute.

[0099] The obtained knitted fabric is composed of a core-sheath type mixed fiber yarn with a non-crimped multifilament in the core and sheath parts, has a soft suede-like touch and a fabric-like appearance, and also has a knitted fabric with snag resistance. The evaluation results are shown in Table 2.

[0100] [Comparative Example 1]

[0101] A drawn yarn with a boiling water shrinkage rate of 13% (non-crimped yarn, total fineness 33 dtex / 12 filaments) composed of polyethylene terephthalate fibers is combined with a drawn yarn with a boiling water shrinkage rate of 8% (non-crimped yarn, total fineness 35 dtex / 72 filaments) composed of polyethylene terephthalate fibers, with 1.6% overfeed applied, and interlacing processing is carried out to obtain a mixed fiber yarn with a yarn length difference of 12% (69 dtex / 84 filaments).

[0102] Next, using a circular knitting machine with a 36 gauge, a circular knitted fabric with a rib stitch is knitted with the obtained mixed fiber yarn (blending ratio: 100%).

[0103] Next, using disperse dyes, the knitted fabric was dyed at a temperature of 130°C for a holding time of 30 minutes. At this time, a hydrophilizing agent (polyethylene terephthalate - polyethylene glycol copolymer emulsion) was added to the dye liquor at a ratio of 2 ml / L, and the hydrophilizing agent was imparted to the knitted fabric by performing a same-bath treatment during the dyeing process. Subsequently, the circular knitted fabric was subjected to dry heat final setting at a temperature of 160°C for 1 minute.

[0104] The obtained knitted fabric had a soft texture, but was poor in terms of suede-like touch, fabric-like appearance, and snag resistance. The evaluation results are shown in Table 2.

[0105] [Comparative Example 2]

[0106] For a polyethylene terephthalate false twist textured yarn (total fineness 84 dtex / 72 filaments) formed by the POY·DTY method of the conventional method, a circular knitting machine with a 36-gauge was used to knit a circular knitted fabric with double rib stitch using the obtained false twist textured yarn (blending ratio: 100%).

[0107] Next, using disperse dyes, the knitted fabric was dyed at a temperature of 130°C for a holding time of 30 minutes. At this time, a hydrophilizing agent (polyethylene terephthalate - polyethylene glycol copolymer emulsion) was added to the dye liquor at a ratio of 2 ml / L, and the hydrophilizing agent was imparted to the knitted fabric by performing a same-bath treatment during the dyeing process. Subsequently, the circular knitted fabric was subjected to dry heat final setting at a temperature of 160°C for 1 minute.

[0108] The obtained knitted fabric had excellent snag resistance, but was poor in terms of soft suede-like touch and fabric-like appearance. The evaluation results are shown in Table 2.

[0109]

[0110] [Example 7]

[0111] As a cation-dyeable polyester, it was composed of polyethylene terephthalate copolymerized with 1.5 mol% of sodium 5-sulfoisophthalate, and a cation-dyeable POY (partially oriented yarn) with a total fineness of 56 dtex / 36 filaments, a breaking strength of 2.0 cN / dtex, and a breaking elongation of 148% was cold-drawn at a draw ratio of 1.6 times to obtain a yarn (non-textured yarn, total fineness 33 dtex / 36 filaments). This yarn was combined with a drawn textured yarn of fully delustered polyethylene terephthalate with a circular cross-section (total fineness 33 dtex / 36 filaments), a 2% overfeed was applied, and an interlacing process was performed to obtain a mixed fiber yarn with a yarn length difference of 39.9% (total fineness 66 dtex / 72 filaments, interlacing degree 91 pieces / m).

[0112] Next, using a single circular knitting machine with a 36-gauge, the above-mentioned blended fiber yarn (blending ratio: 90.3%) and polyurethane elastic yarn (blending ratio: 9.7%) are used to knit a circular knitted fabric with a plain stitch in a laid-in knitting (laid-in knitting).

[0113] Next, using disperse dyes, the knitted fabric is dyed at a temperature of 130°C for a holding time of 30 minutes. At this time, by treating the hydrophilic agent (polyethylene terephthalate - polyethylene glycol copolymer emulsion) in the same bath at a ratio of 2 mL / L relative to the dye liquor during the dyeing process, the knitted fabric is imparted with a hydrophilic agent. Then, the circular knitted fabric is subjected to dry heat final setting at a temperature of 160°C for 1 minute.

[0114] The obtained knitted fabric is a knitted fabric with a soft suede-like touch, good stretchability and recovery, and also has snag resistance. The evaluation results are shown in Table 3.

[0115] [Example 8]

[0116] As the cation-dyeable polyester, it is composed of polyethylene terephthalate copolymerized with 1.5 mol% of sodium 5-sulfoisophthalate and the ethylene glycol component and terephthalic acid component are obtained by chemical recycling. And the cation-dyeable POY (partially oriented yarn) with a total fineness of 56 dtex / 36 filaments, a breaking strength of 2.0 cN / dtex, and an elongation at break of 150% is cold-drawn at a draw ratio of 1.6 times to obtain a yarn (non-crimped yarn, total fineness 33 dtex / 36 filaments), which is combined with a semi-dull polyethylene terephthalate draw textured yarn with a circular cross-section (total fineness 33 dtex / 72 filaments), with 2% overfeed applied, and then subjected to interlacing processing to obtain a blended fiber yarn with a yarn length difference of 57.3% (total fineness 66 dtex / 108 filaments, interlacing degree 94 per meter).

[0117] Next, using a single circular knitting machine with a 28-gauge, the above-mentioned blended fiber yarn (blending ratio: 90%) and polyurethane elastic yarn (blending ratio: 10%) are used to knit a circular knitted fabric with a plain stitch in a laid-in knitting (laid-in knitting).

[0118] Next, using disperse dyes, the knitted fabric is dyed at a temperature of 130°C for a holding time of 15 minutes. At this time, by treating the hydrophilic agent (polyethylene terephthalate - polyethylene glycol copolymer emulsion) in the same bath at a ratio of 2 mL / L relative to the dye liquor during the dyeing process, the knitted fabric is imparted with a hydrophilic agent. Then, the circular knitted fabric is subjected to dry heat final setting at a temperature of 160°C for 1 minute.

[0119] The obtained knitted fabric is a knitted fabric having a soft suede-like touch, good stretchability and recovery, and also having snag resistance. The evaluation results are shown in Table 3.

[0120] [Example 9]

[0121] As the cation-dyeable polyester, it is composed of polyethylene terephthalate copolymerized with 1.6 mol% of sodium 5-sulfoisophthalate, and the cation-dyeable POY (partially oriented yarn) with a total fineness of 56 dtex / 36 filaments, a breaking strength of 2.4 cN / dtex, and an elongation at break of 128% is cold drawn at a draw ratio of 1.6 times to obtain a yarn (non-crimped yarn, total fineness 33 dtex / 36 filaments), which is combined with a full dull polyethylene terephthalate drawn yarn with a constricted flat cross-section (non-crimped yarn, total fineness 44 dtex / 36 filaments), and 2% overfeed is applied for interlacing processing to obtain a mixed-filament yarn with a yarn length difference of 62.8% (total fineness 77 dtex / 72 filaments, interlacing degree 91 pieces / m).

[0122] Next, using a single circular knitting machine with a 36-gauge, the above-mentioned mixed-filament yarn (blending ratio: 88.4%) and polyurethane elastic yarn (blending ratio: 11.6%) are used to knit a circular knitted fabric of plain stitch in intarsia knitting (intarsia knitting).

[0123] Then, using disperse dyes, the knitted fabric is dyed at a temperature of 130 °C for a holding time of 30 minutes. At this time, a hydrophilizing agent (polyethylene terephthalate-polyethylene glycol copolymer emulsion) is bath-treated in the same bath during the dyeing process at a ratio of 2 ml / L relative to the dye liquor, thereby imparting a hydrophilizing agent to the knitted fabric. Next, dry heat final setting is performed on the circular knitted fabric at a temperature of 160 °C for 1 minute.

[0124] The obtained knitted fabric is a knitted fabric having a soft suede-like touch, good stretchability and recovery, and also having snag resistance. The evaluation results are shown in Table 3.

[0125] [Example 10]

[0126] As a cation-dyeable polyester, it is composed of polyethylene terephthalate copolymerized with 1.5 mol% of sodium 5-sulfoisophthalate and the ethylene glycol component and terephthalic acid component obtained by chemical recycling. And the cation-dyeable POY (partially oriented yarn) with a total fineness of 56 dtex / 36 filaments, a breaking strength of 2.0 cN / dtex, and an elongation at break of 150% is cold drawn at a draw ratio of 1.6 times to obtain a yarn (non-crimped yarn, total fineness 33 dtex / 36 filaments), which is combined with a semi-dull polyethylene terephthalate drawn yarn with a circular cross-section (non-crimped yarn, total fineness 22 dtex / 72 filaments), with a 2% overfeed applied, and then subjected to interlacing processing to obtain a blended yarn with a yarn length difference of 30% (total fineness 55 dtex / 108 filaments, interlacing degree 118 per meter).

[0127] Next, using a single circular knitting machine with a 36-gauge, the above blended yarn (blending ratio: 89.1%) and polyurethane elastic yarn (blending ratio: 10.9%) are used to knit a circular knitted fabric with a plain stitch in a laid-in knitting (laid-in knitting).

[0128] Next, using disperse dyes, the knitted fabric is dyed at a temperature of 130 °C for a holding time of 15 minutes. At this time, by adding a hydrophilic agent (polyethylene terephthalate - polyethylene glycol copolymer emulsion) at a ratio of 2 ml / liter relative to the dye liquor and performing a co-bath treatment during the dyeing process, the knitted fabric is given a hydrophilic agent. Then, the circular knitted fabric is subjected to dry heat final setting at a temperature of 160 °C for 1 minute.

[0129] The obtained knitted fabric is a knitted fabric having a soft suede-like touch, good stretchability and recovery, and also having snag resistance. The evaluation results are shown in Table 3.

[0130] [Comparative Example 3]

[0131] For a polyethylene terephthalate false twist crimped yarn (total fineness 84 dtex / 72 filaments) obtained by the POY·DTY method of the conventional method, a circular knitting machine with a 28-gauge is used, and the obtained false twist crimped yarn (blending ratio: 86%) and urethane elastic yarn (blending ratio: 14%) are used to knit a circular knitted fabric with a plain stitch in a laid-in knitting (laid-in knitting).

[0132] Next, using disperse dyes, the knitted fabric is dyed at a temperature of 130 °C for a holding time of 30 minutes. At this time, by adding a hydrophilic agent (polyethylene terephthalate - polyethylene glycol copolymer emulsion) at a ratio of 2 ml / liter relative to the dye liquor and performing a co-bath treatment during the dyeing process, the knitted fabric is given a hydrophilic agent. Then, the circular knitted fabric is subjected to dry heat final setting at a temperature of 160 °C for 1 minute.

[0133] Although the obtained knitted fabric has excellent stretchability and snag resistance, it has poor soft suede-like touch and recovery properties. The evaluation results are shown in Table 3.

[0134]

[0135] Industrial applicability

[0136] According to the present invention, a knitted fabric and a fiber product having a soft suede-like touch and excellent snag resistance can be provided, and they have great industrial value.

Claims

1. A knitted fabric, characterized in that, It is a knitted fabric containing core-sheath conjugate fiber yarn, wherein the core part of the conjugate fiber yarn is a non-crimped multifilament, and the difference in yarn length between the core part and the sheath part is 25% or more.

2. The knitted fabric according to claim 1, wherein, The sheath part of the conjugate fiber yarn is a non-crimped multifilament.

3. The knitted fabric according to claim 1, wherein, The density of the knitted fabric is in the range of 80 - 150 courses / 2.54 cm and 60 - 120 wales / 2.54 cm.

4. The knitted fabric according to claim 1, wherein, The knitted fabric is a circular knitted fabric.

5. The knitted fabric according to claim 1, wherein, Both the core part and the sheath part are made of polyester fiber.

6. The knitted fabric according to claim 1, wherein, The core part is made of cation-dyeable polyester fiber.

7. The knitted fabric according to claim 1, wherein, The single fiber fineness of the sheath part is 0.8 dtex or less.

8. The knitted fabric according to claim 1, wherein, In the conjugate fiber yarn, both the core part and the sheath part are multifilaments with 20 - 200 filaments.

9. The knitted fabric according to claim 1, wherein, It is formed by performing 30 or more interlacing processes per meter on the conjugate fiber yarn.

10. The knitted fabric according to claim 1, wherein, The knitted fabric further contains stretchable fiber.

11. The knitted fabric according to claim 1, wherein, The snag resistance of the knitted fabric is grade 3 or more.

12. A fiber product, which is any one of fiber products selected from sportswear, outerwear, underwear, men's clothing, women's clothing, clothing for nursing, work clothing, automotive seat upholstery materials, and bedding, and is made using the knitted fabric according to any one of claims 1 - 11.

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