JP2008303492A - Method for producing flocked knit fabric, suede-tone knit fabric, and textile product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a flocked knit fabric having soft surface touch and voluminous feeling, a flocked knit fabric produced by the production method, and a textile product produced by using the flocked knit fabric. <P>SOLUTION: The flocked knit fabric is produced by producing a knit fabric using at least a high heat-shrinkage fiber having a boiling water shrinkage of ≥20% as a ground texture fiber of the flocked knit fabric composed of flocked yarns and a ground texture part, applying flock treatment to the knit fabric to obtain a flocked fabric composed of flocked yarns and a ground texture part and heat-treating the knit fabric to cause the shrinkage of the ground texture part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for producing a raised knitted fabric that exhibits a soft surface touch and a sense of volume, a raised knitted fabric obtained by the production method, and a textile product using the raised knitted fabric.

Conventionally, various knitted fabrics composed of a raised yarn and a ground tissue portion have been proposed. For example, Patent Document 1 proposes a raised knitted fabric that exhibits a soft texture using ultrafine fibers as a raised yarn. In Patent Document 2, a high-density raised knitted fabric is proposed.
However, a brushed knitted fabric that exhibits a soft surface touch and a sense of volume has not been proposed so far.

Japanese Patent Laid-Open No. 7-216687 JP 2005-232643 A

  The present invention has been made in view of the above-described background, and an object of the present invention is to use a method for producing a raised knitted fabric that exhibits a soft surface touch and a volume feeling, a raised knitted fabric obtained by the production method, and the raised knitted fabric. It is to provide a textile product.

  As a result of intensive studies to achieve the above-mentioned problems, the present inventors obtained at least a high heat-shrinkable fiber as the ground tissue portion fiber and obtained a raised knitted fabric composed of the raised yarn and the ground tissue portion. When heat-shrinking the ground texture part by applying heat treatment to the knitted fabric, the root part of the raised yarn emerges on the surface of the ground texture part, and as a result, the surface of the ground texture part is found to exhibit a soft surface touch, Furthermore, the present invention has been completed by intensive studies.

  Thus, according to the present invention, "after obtaining a knitted fabric using at least a high heat-shrinkable fiber having a boiling water shrinkage of 20% or more as the ground tissue portion fiber of the raised knitted fabric composed of the raised yarn and the ground tissue portion, Raising the knitted fabric by raising the knitted fabric to obtain a raised knitted fabric composed of a raised yarn and a ground tissue portion, and then subjecting the knitted fabric to heat treatment to shrink the ground texture portion. A method for manufacturing a knitted fabric. "

  At that time, the fiber having a boiling water shrinkage of 20% or more is a copolyester fiber, and the copolyester forming the copolyester fiber is composed of terephthalic acid and ethylene glycol as main constituent monomers of the copolyester. And the third component copolymerized with the main constituent monomer is any one selected from the group consisting of isophthalic acid, naphthalene dicarboxylic acid, adipic acid, sebacic acid, diethylene glycol, polyethylene glycol, bisphenol A, and bisphenol sulfone. It is preferable. In particular, the copolyester is a copolyester in which the acid component is composed of terephthalic acid and isophthalic acid having a molar ratio (terephthalic acid / isophthalic acid) of 90/5 to 85/15, and the glycol component is composed of ethylene glycol. Is preferred. Moreover, it is preferable to use a polyester false twisted yarn as the other fiber of the ground tissue portion. Moreover, it is preferable to use a polyester fiber having a single yarn fineness of less than 1.5 dtex as the raised portion fiber. Moreover, it is preferable that the said heat processing is heat processing by a dyeing process.

Moreover, according to this invention, the raised knitted fabric manufactured by the manufacturing method of the said raised knitted fabric is provided. In such a raised knitted fabric, the loop density of the knitted fabric is preferably 4500 pieces / (2.54 cm) ² or more. Moreover, it is preferable that the thickness of a knitted fabric is 1.0 mm or more. Moreover, it is preferable that the fabric weight of a knitted fabric exists in the range of 150-600 g / m < ² >.
Further, according to the present invention, the raised knitted fabric is used such that the surface of the ground tissue portion is on the outside air side, such as outer clothing, sports clothing, inner clothing, shoe materials, diapers and nursing sheets. Any textile product selected from the group consisting of medical / hygiene products, bedding, skin materials such as chairs and sofas, carpets, car seats, and interior products is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the raising knitted fabric which exhibits a soft surface touch and a volume feeling, the raising knitted fabric obtained by this manufacturing method, and the textiles using this raising knitted fabric are obtained.

Hereinafter, embodiments of the present invention will be described in detail.
First, in the method for producing a raised knitted fabric of the present invention, at least a high heat-shrinkable fiber having a boiling water shrinkage of 20% or more (preferably 40% or more, particularly preferably 50 to 90%) is used as the fabric for the ground tissue part. By using such a high heat shrinkable yarn as the fiber for the ground tissue portion, when the knitted fabric is subjected to heat treatment, the ground texture portion is thermally shrunk, and the raised yarn is formed on the surface of the ground tissue portion as schematically shown in FIG. The root portion of the surface of the ground surface floats to the surface side of the ground tissue portion, and the surface of the ground tissue portion exhibits a soft surface touch.

  Here, as the high heat-shrinkable fiber, the following copolyester fiber is preferable. First, the main constituent monomers of the copolyester are terephthalic acid and ethylene glycol, and the third component copolymerized with this main constituent monomer is isophthalic acid, naphthalenedicarboxylic acid, adipic acid, sebacic acid, diethylene glycol, polyethylene glycol, bisphenol. A copolymer polyester resin selected from the group consisting of A and bisphenol sulfone is used. In particular, the copolyester is a copolyester in which the acid component is composed of terephthalic acid and isophthalic acid having a molar ratio (terephthalic acid / isophthalic acid) of 90/5 to 85/15, and the glycol component is composed of ethylene glycol. Is preferred. Next, the copolymer polyester is subjected to a normal spinning process, and the obtained undrawn yarn is drawn by a usual method, whereby a high heat-shrinkable fiber having a boiling water shrinkage of 20% or more can be easily obtained. When obtaining a highly heat-shrinkable fiber having a higher boiling water shrinkage, the obtained undrawn yarn is directly wound at a take-up speed of about 3500 m / min without drawing, and the undrawn yarn is 60-80. It is preferable that the film is slightly stretched at a stretching ratio of 1.3 to 1.5 times at a temperature of ° C.

  As long as the main purpose of the present invention is not within the above range, the high heat shrinkable fiber has a matting agent (titanium dioxide), a fine pore forming agent (organic sulfonic acid metal salt), an anti-coloring agent, and a heat stabilizer. Contains one or more of flame retardants (antimony trioxide), fluorescent brighteners, color pigments, antistatic agents (sulfonic acid metal salts), hygroscopic agents (polyoxyalkylene glycols), antibacterial agents, and other inorganic particles You may let them.

  Moreover, as a fiber form of the said high heat-shrinkable fiber, it is preferable that it is a multifilament (long fiber). At that time, the total fineness and the number of filaments of the multifilament are preferably in the ranges of the total fineness of 20 to 300 dtex and the number of filaments of 20 to 300, respectively.

  In the present invention, the high heat-shrinkable fibers may be used alone as the fibers for the ground tissue part, but when other polyester fibers such as polyethylene terephthalate are used as a polyester false twisted yarn, It is preferable that the ground tissue part is easily heat-shrinkable. In this case, the polyester false twisted yarn may be a normal false twisted yarn having a crimp rate of 18% or more (preferably 20 to 30%). The total fineness and the number of filaments of the false twisted yarn may be the same as those of the high heat shrinkable fiber.

  In the present invention, there are no particular limitations on the fibers for the raised yarn, but for obtaining a soft surface touch, polyethylene terephthalate having a single yarn fineness of less than 1.5 dtex (more preferably 0.05 to 0.5 dtex), etc. Polyester fibers made of ordinary polyester are preferred. The fiber form of the raised yarn fiber is preferably multifilament (long fiber), and false twisted yarn is particularly preferable for obtaining a soft surface touch. The total fineness and the number of filaments of the raised yarn fibers are preferably in the range of a total fineness of 20 to 90 dtex and a filament count of 100 to 300, respectively.

  In the present invention, a knitted fabric is knitted by a conventional method using a normal knitting machine (preferably a high gauge of 36 gauge or higher) using the above-described raised yarn fibers and ground tissue portion fibers. At that time, as the knitting structure, a half structure, a half base structure, a satin structure or the like using two or three sheets is preferable.

  Next, the knitted fabric is subjected to raising processing by a conventional method (for example, raising a needle cloth) to obtain a raised knitted fabric composed of a raised yarn and a ground tissue portion. Then, the raised knitted fabric is subjected to a heat treatment to contract the ground texture portion, and the root portion of the raised yarn floats on the ground texture portion surface side on the surface of the ground texture portion as schematically shown in FIG. For example, when raising the sinker surface of the knitted fabric, the root portion of the raised yarn is lifted on the needle surface.

  As the heat treatment, heat treatment by dyeing is preferable. By the fir tree effect during the dyeing process, the root portion of the raised yarn can be easily raised on the surface of the ground tissue portion. The temperature of the dyeing process is preferably in the range of 100 to 140 ° C. (more preferably 110 to 130 ° C.) in order to sufficiently shrink the ground tissue part. Further, the temperature of the dry heat preset after the dyeing process and the dry heat final set is preferably in the range of 140 to 180 ° C.

  In addition, before and / or after dyeing processing, conventional alkali weight reduction processing, water absorption processing, water repellency processing, and further UV shielding or antistatic agent, antibacterial agent, deodorant, insect repellent, phosphorescent agent, retroreflection Various processings that impart functions such as an agent and a negative ion generator may be additionally applied as long as the main purpose of the present invention is not impaired.

In the raised knitted fabric thus obtained, the surface of the ground tissue portion exhibits a soft surface touch due to the fibers that float. At the same time, the raised yarn gives a sense of volume. In such a brushed knitted fabric, when the loop density of the knitted fabric is 4500 pieces / (2.54 cm) ² or more (more preferably 6000 to 10,000 pieces / (2.54 cm) ² ), the surface of the ground texture portion also exhibits a dense feeling. This is preferable. The density of the knitted fabric is preferably in the range of 75 to 150 courses / 2.54 cm and 40 to 80 wales / 2.54 cm. Further, the thickness of the knitted fabric is preferably 1.0 mm or more (more preferably 1.5 to 3.0 mm) because a good volume feeling is exhibited. Further, it is preferable that a basis weight of knitted fabric is in the range of 150~600g / ^{m 2.}

  Further, the textile product of the present invention uses the above-described raised knitted fabric so that the surface of the ground tissue portion is on the outside air side, outer clothing, sports clothing, inner clothing, shoe materials, diapers, nursing sheets, etc. This is a textile product selected from the group consisting of medical and hygiene products, bedding, skin materials such as chairs and sofas, carpets, car seats, and interior products. Since such a textile product uses the above-mentioned raised knitted fabric, it exhibits a soft surface touch and a volume feeling.

EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not limited at all by these. In addition, each physical property in an Example is measured with the following method.
(1) Intrinsic viscosity Dissolved in ortho-chlorophenol and measured at 35 ° C using an Ubbelohde viscosity tube.
(2) Boiling water shrinkage rate Boiling water shrinkage rate (hot water shrinkage rate) (%) was measured by n number 3 by the method defined in JIS L 1013-1998, 7.15.
(3) Crimp rate (%)
The test filament yarn was wound around a measuring machine having a circumference of 1.125 m to prepare a skein having a dryness of 3333 dtex.
The skein is suspended from a hanging nail of the scale plate, an initial load of 6 g is applied to the lower part thereof, and a length L0 of the skein when a load of 600 g is further applied is measured. Immediately thereafter, the load is removed from the skein, the scale plate is removed from the hanging nail, and the skein is immersed in boiling water for 30 minutes to develop crimps. The skein after the boiling water treatment is taken out from the boiling water, the moisture contained in the skein is absorbed and removed with a filter paper, and air-dried at room temperature for 24 hours. This air-dried skein is hung on a hanging nail of the scale plate, a load of 600 g is applied to the lower part, a length L1a of the skein is measured after 1 minute, and then the load is removed from the skein and after 1 minute The length L2a is measured. The crimp rate (CP) of the test filament yarn is calculated by the following formula.
CP (%) = ((L1a−L2a) / L0) × 100
(4) Surface touch The following three stages were evaluated by sensory evaluation of three testers. Third grade: The surface of the ground tissue part is soft. Second grade: The surface of the geological structure part is slightly soft. First grade: The surface of the ground tissue part is hard.
(5) Thickness It was measured according to JIS L1096 8.5.1.
(6) Weight per unit area Measured according to JIS L1096 8.4.2.

[Example 1]
A 36 gauge normal tricot knitting machine was used to prepare a copolyester having an acid component of terephthalic acid and isophthalic acid having a molar ratio of 93/7, a glycol component of ethylene glycol, and an intrinsic viscosity of 1.45. . This copolyester resin is melt-spun by a normal spinning method, cooled, solidified and stretched by a normal method to obtain a copolyester multifilament (yarn count: 33 dtex / 12, boiling water shrinkage: 40%). A full set of fibers for the geological tissue part was passed through the bag.

In addition, a normal polyethylene terephthalate multifilament false twisted yarn (yarn count: 33 dtex / 36, manufactured by Teijin Fibers Ltd.) having a crimp rate of 20% and a boiling water shrinkage rate of 10% is used as a full set of fibers for the geological tissue part. Passed through the front fence.
In addition, a normal polyethylene terephthalate multifilament false twisted yarn (yarn count: 56 dtex / 144, manufactured by Teijin Fibers Ltd.) with a crimp rate of 5% and a boiling water shrinkage rate of 10% is used as a full set of raised yarn. I passed it to my niece.

Next, a knitted fabric was knitted with the back 10-12, the middle 44-00, and the front 23-10. Subsequently, brushing is performed on the sinker loop surface of the knitted fabric, and the resulting knitted fabric is subjected to high-pressure dyeing at 130 ° C. to sufficiently shrink the ground texture portion, followed by dry heat presetting at 160 ° C. As a final set, a dry heat setting at 160 ° C. was performed. The basis weight of the obtained knitted fabric is 292 g / m ² , the loop density is 8650 pieces / (2.54 cm) ² , the fabric thickness is 1.65 mm, and the surface of the ground tissue part (needle surface) is soft It was a suede-like knitted fabric with a texture (class 3) and a dense feeling, and a voluminous feel.
In addition, a car seat fabric was sewn using the above-mentioned raised knitted fabric so that the surface of the ground tissue portion was on the outside air side.

[Example 2]
Example 1 was the same as Example 1 except that the gauge of the tricot knitting machine was changed to 28 gauge. The basis weight of the obtained knitted fabric is 495 g / m ² , the loop density is 3650 pieces / (2.54 cm) ² , the thickness of the fabric is 1.64 mm, and the surface of the ground tissue portion (needle surface) is dense. The feeling was slightly inferior to that obtained in Example 1.

[Comparative Example 1]
In Example 1, except that normal polyethylene terephthalate multifilament (yarn count: 33 dtex / 12, boiling water shrinkage: 10%, manufactured by Teijin Fibers Ltd.) was passed through the back bag as a full-textured fabric Was the same as in Example 1. The basis weight of the obtained knitted fabric is 109 g / m ² , the loop density is 3200 pieces / (2.54 cm) ² , the thickness of the fabric is 1.2 mm, and the surface of the ground tissue part (needle surface) is hard It was a thing (first grade).

  According to the present invention, there are provided a method for producing a raised knitted fabric that exhibits a soft surface touch and a sense of volume, a raised knitted fabric obtained by the production method, and a textile product using the raised knitted fabric, and its industrial value. Is extremely large.

It is a figure which shows typically a mode that the root part of a raising thread | float floats up in the ground tissue part surface by heat-processing.

Explanation of symbols

1: Raised yarn 2: Ground tissue part 3: The root part of the raised yarn that emerged

Claims (11)

  After obtaining a knitted fabric using at least a high heat-shrinkable fiber having a boiling water shrinkage of 20% or more as a ground tissue portion fiber of a raised knitted fabric composed of a raised yarn and a ground tissue portion, the knitted fabric is subjected to raising processing Thus, a raised knitted fabric composed of a raised yarn and a ground texture portion is obtained, and then the ground texture portion is contracted by subjecting the knitted fabric to a heat treatment.   The high heat-shrinkable fiber is a copolyester fiber, and the copolyester forming the copolyester fiber is terephthalic acid and ethylene glycol as the main constituent monomers of the copolyester, The raised nail according to claim 1, wherein the third component to be polymerized is any one selected from the group consisting of isophthalic acid, naphthalene dicarboxylic acid, adipic acid, sebacic acid, diethylene glycol, polyethylene glycol, bisphenol A, and bisphenol sulfone. A method for manufacturing a knitted fabric.   The copolyester is a copolyester composed of terephthalic acid and isophthalic acid in which the acid component has a molar ratio (terephthalic acid / isophthalic acid) of 90/5 to 85/15 and the glycol component consists of ethylene glycol. 2. A method for producing a raised knitted fabric according to item 2.   The method for producing a raised knitted fabric according to any one of claims 1 to 3, wherein a polyester false twisted yarn is used as the other fibers of the ground tissue portion fiber.   The method for producing a raised knitted fabric according to any one of claims 1 to 4, wherein a polyester fiber having a single yarn fineness of less than 1.5 dtex is used as the raised yarn fiber.   The manufacturing method of the raising knitted fabric in any one of Claims 1-5 whose said heat processing is the heat processing by a dyeing process.   A brushed knitted fabric produced by the method for producing a brushed knitted fabric according to any one of claims 1 to 6. The raised knitted fabric according to claim 7, wherein the loop density of the knitted fabric is 4500 pieces / (2.54 cm) ² or more.   The brushed knitted fabric according to claim 7 or 8, wherein the thickness of the knitted fabric is 1.0 mm or more. Basis weight of the knitted fabric is in the range of 150~600g / ^{m 2,} brushed knitted fabric according to any one of claims 7-9.   Outer garments, sports garments, inner garments, shoe materials, diapers and nursing sheets, etc., wherein the brushed knitted fabric according to any one of claims 7 to 10 is used so that the surface of the ground tissue portion is on the outside air side. Textile products selected from the group consisting of medical and hygiene products, bedding, skin materials such as chairs and sofas, carpets, car seats, and interior goods.

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