JP2010168669A - High-density thin woven fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high-density thin woven fabric usable for fashion wear, sportswear or the like, not obtained by a conventional technique, hardly becoming transparent when developed as a white color, and providing good color development when developed by being colored. <P>SOLUTION: The high-density thin woven fabric is constituted of a polyester multifilament having a cover factor of ≥2,000, and satisfying all of the following requirements of (a) to (c): (a) having the total fineness of ≤33 dtex; (b) containing a copolymerized component and having a boiling water shrinkage of ≥15% in a raw thread stage; and (c) having a content of ≤0.1 wt.% of white inorganic particles. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a high-density thin fabric that is difficult to see through even when developed in white and has good color developability when colored, and more specifically, can be used for fashion clothing, sports clothing, etc., with a cover factor of 2000 or more and 33 dtex or less, Containing a copolymer component, boiling water shrinkage is 15% or more, and white inorganic particles are contained in a polyester multifilament yarn having a content of 0.1% or less. It relates to a high density thin fabric with good quality.

  Conventionally, with respect to thin fabrics, the fabric weight is very light, and the tear strength of the fabric is improved from the strength of the yarn constituting the fabric (for example, see Patent Document 1 and Patent Document 2). A flat yarn is used to improve the water pressure resistance of the woven fabric (see, for example, Patent Document 3), or a thread using a yarn added with inorganic particles (see, for example, Patent Document 4). 2 and 3, there is a problem that the fabric is very transparent due to the very thin fabric, and in Patent Document 4, since inorganic particles are added, it is thin. The fabric is hard to see through, but the addition of inorganic particles results in a matte woven fabric that has a unique luster, and the inorganic particles are usually white. Coloring of the time was that there is a problem that remarkably bad.

Japanese Patent No. 2653919 JP 2006-52505 A Japanese Patent Laid-Open No. 11-286848 Japanese Patent Laid-Open No. 2004-44018

  The present invention is intended to solve the above-mentioned problems of the prior art, and can be used for fashion clothing, sports clothing, etc., which cannot be obtained with the prior art, is not transparent when white is developed, and has color development when colored development. It is an object to provide a good high density thin fabric.

In order to solve the above problems, the present invention has the following configuration. That is,
(1) A high density thin woven fabric comprising a polyester multifilament yarn having a cover factor of 2000 or more and satisfying all of the following requirements (a) to (c):
(A) The total fineness is 33 dtex or less,
(B) contains a copolymer component and has a boiling water shrinkage of 15% or more in the raw yarn,
(C) The content of white inorganic particles is 0.1% by weight or less.

  (2) The high density thin woven fabric according to (1) above, which is composed of a polyester multifilament yarn having a single yarn fineness of 1 dtex or less.

  (3) The copolymerization component is dicarboxylic acids selected from oxalic acid, sebacic acid, phthalic acid and isophthalic acid, glycols selected from diethylene glycol, polyethylene glycol and neopentyl glycol, or bisphenol A and bisphenol sulfone. The high-density thin fabric described in (1) or (2), which is characterized in that

  (4) The white inorganic particles are at least one selected from titanium oxide, zirconium oxide, magnesium oxide, silicon oxide, antimony oxide, zinc oxide, lead tungstate, calcium tungstate, and calcium carbonate. The high-density thin fabric according to any one of (1) to (3).

  (5) The polyester used for the polyester multifilament yarn is polyethylene terephthalate, (1) or (2) high density thin fabric as described in (2) above.

  According to the present invention, a high-density thin woven fabric that is difficult to see through when white and has good color development when colored can be obtained, and can be optimally used for fashion clothing and sports clothing.

  Hereinafter, the present invention will be described in more detail.

  In order to obtain a high-density thin fabric that is difficult to see when white and has good color development when colored, first, the cover factor after finishing dyeing of the fabric should be 2000 or more from the viewpoint of making it difficult to see when white. is important. Here, considering the principle that the fabric is transparent, the transparency means that light such as visible light passes through the fabric without being absorbed or scattered. There are two possible parts of the woven fabric through which light passes, one point being through the gap between the warp and weft constituting the fabric, and the other being passing through the warp and weft itself.

Here, the cover factor is {warp density (main / 2.54 cm) × (warp fineness (D)) ^1/2 } + {weft density (main / 2.54 cm) × (weft fineness (D)) ^1/2 The ratio of the area occupied by the yarn to the area of the woven fabric represented by the following formula: The larger the cover factor, the smaller the gap between the warp and the weft. From this, the visible light from the gap between the warp and the weft Can block the passage of light.

  From the above, it is important that the cover factor of the fabric is 2000 or more in order to obtain a high-density thin fabric that is difficult to see when white and has good color development when colored.

  In addition, the upper limit of the cover factor is desirably 3000 or less from the viewpoint that mass production can be performed.

Furthermore, in order to obtain a high-density thin woven fabric that is difficult to see through when white and has good color development when colored, it is important to be composed of polyester filament yarns that satisfy all of the following items (a) to (c): It is. That is,
(A) The total fineness is 33 dtex or less,
(B) containing a copolymer component, and having a boiling water shrinkage of 15% or more in the raw yarn,
(C) The content of white inorganic particles is 0.1% by weight or less.

  First, regarding the total fineness of the polyester multifilament of the present invention, if the thickness exceeds 33 dtex, the fabric becomes thick and a thickness suitable for a thin fabric cannot be obtained. Therefore, it is important that it is 33 dtex or less. In addition, if it is 25 dtex or less, since a thinner fabric is obtained, it is preferable. However, if the fineness is too thin, the yarn is thin and the strength is weakened, and the tear strength in the woven fabric may be lowered. Therefore, the fineness is preferably 15 dtex or more.

  Furthermore, it is important that the polyester multifilament of the present invention contains a copolymer component as the third component. Examples of the copolymer component included in the polyester multifilament include dicarboxylic acids such as oxalic acid, sebacic acid, phthalic acid and isophthalic acid, glycols such as diethylene glycol, polyethylene glycol and neopentyl glycol, bisphenol A and bisphenol sulfone. Etc. By including this copolymer component, it is possible to reduce the degree of molecular orientation of the molecular structure in the polyester multifilament. The decrease in the degree of molecular orientation means that the molecular orientation is not a straight line and the bending is increased. This makes it difficult for light such as visible light to pass through the molecular structure of the polyester multifilament. It becomes easy.

  As described above, the polyester multifilament containing the copolymer component can be used to prevent the passage of light such as visible light from the warp and the weft itself, and the woven fabric as a high-density woven fabric to which the above-described cover factor is applied. In combination with preventing the passage of light from the gap between the warp and the weft, it is possible to make the fabric less transparent.

  In addition, when the polyester multifilament contains a copolymer component as the third component, the boiling water shrinkage of the raw yarn can be improved, that is, the shrinkage can be increased. Numerically, weaving property can be improved by making the boiling water shrinkage of the raw yarn 15% or more. When producing a high-density fabric with a loom, a very large number of warps and wefts are required. Especially when there are a large number of warps, there are no gaps between the warps on the loom, and the yarns rub against each other. Fluffing occurs, the number of stops of the loom increases, and the woven property of the fabric may be significantly reduced. In order to prevent this decrease in weaving property, even if weaving with a low density, if the boiling water shrinkage is high, it can be shrunk at the time of dyeing and can be made into a high-density fabric. However, if the boiling water shrinkage of the raw yarn is too high, the shrinkage of the fabric during dyeing will be too great, and the length and width of the fabric after dyeing will be extremely short, making it inefficient during mass production. The boiling water shrinkage is preferably 30% or less.

  As the copolymerization component, any of the above-described copolymerization components may be used, but isophthalic acid and bisphenol A are particularly preferable from the viewpoints of yarn production and high shrinkage. Further, the content of the copolymer component of the third component is preferably 2 mol% or more in order to sufficiently impart high shrinkage characteristics. However, if the copolymerization component of the third component exceeds 10 mol%, yarn breakage frequently occurs during spinning, so the content is preferably 10 mol% or less.

  From the above, it is very important that the polyester multifilament constituting the high-density thin fabric that is difficult to see through when white and has good color development when colored contains a copolymer component. Furthermore, it is important that the polyester filament of the present invention has a white inorganic particle content of 0.1% by weight or less. Examples of the white inorganic particles include titanium oxide, zirconium oxide, magnesium oxide, silicon oxide, antimony oxide, zinc oxide, lead tungstate, calcium tungstate and calcium carbonate. The content of these white inorganic particles As the amount of the polymer increases, the light passing through the polymer is blocked by the white inorganic particles, so that the fabric becomes less transparent. However, the polymer becomes white, and the color developability during dyeing is significantly reduced. In addition, on the surface of the polymer, the white inorganic particles make irregularities on the surface, so that the light is irregularly reflected and becomes very matte, which also causes a decrease in color developability. However, if the white inorganic particles are not contained at all, the surface of the polymer becomes completely flat, the yarn path resistance when spinning the polyester multifilament increases, and yarn breakage occurs frequently. From the above, the content of the white inorganic particles of the polyester multifilament in the present invention is important to be 0.1% by weight or less, preferably 0.05 to 0.01% by weight. The white inorganic particles preferably have an average secondary particle size of 1 to 1000 nm. Here, the average particle diameter means an average value of equivalent circle diameters obtained when the particles are projected on a plane, and is measured using an electron microscope or a particle size distribution meter of such a measurement principle. can do.

  From the above, it is very difficult for the polyester multifilaments constituting the high-density thin fabrics that are difficult to see when white and have good color development when colored to have a white inorganic particle content of 0.1% by weight or less. is important. The high-density thin fabric obtained from the above configuration is difficult to see through when white and becomes a high-density fabric with good color development when colored.

  Further, if the single yarn fineness of the polyester multifilament constituting the high-density thin fabric that is difficult to see through when white and is colored when colored is 1 dtex or less, the single yarn fineness is very soft. It becomes a woven fabric, and it is preferable to reduce the hardness of the woven fabric, which is generated when the woven fabric is densified, and to be a soft woven fabric with a high density. However, if it is less than 0.01 dtex, the surface area of the multifilament yarn is extremely increased and it is difficult to see through, but the color developability after dyeing processing becomes very poor, so 0.01 dtex or more is preferable.

Polyester multifilament can be any of polyesters commonly used for apparel, such as polyethylene terephthalate, polypropylene terephthalate, and polybutylene terephthalate. From the viewpoint of improving the properties, polyethylene terephthalate is preferable. In addition, about the difficulty of see-through in white, that is, the see-through property, a white high-density thin fabric obtained in the present invention is applied to a blackboard and a white board, and the brightness ( L value) is measured, and the L value of only the blackboard and the white board is measured. From these measured values, the following formula ((1- (LfW−LfB) / (LW−LB)) × 100
(Here, LfW = L value of the fabric when the white board is backed up LfB = L value of the fabric when the blackboard is backed up LW = L value of the white board only LB = L value of the blackboard only)
The permeation rate (%) can be obtained by calculating. This see-through rate is 100%, and it becomes a woven fabric that is not transparent at all.

  The high-density thin fabric of the present invention is preferably 50% or more with respect to the see-through rate from the viewpoint that it is difficult to see even when white.

  In addition, the color developability at the time of coloring is determined by dyeing the high-density thin fabric of the present invention with a normal black disperse dye and obtaining the lightness (L value) using a spectrocolorimeter. Can be judged to be good. About the high-density thin fabric of this invention, L value at the time of dyeing | staining black is 17 or less.

  The high-density thin fabric of the present invention has a total fineness of 33 dtex or less, contains a copolymer component, has a boiling water shrinkage of 15% or more in the raw yarn, and a white inorganic particle content of 0.1% by weight or less. Polyester multifilament yarn and used for either or both of the warp and weft of the fabric. Preferably, it is preferably used for both backgrounds in order to maximize the effect of the polyester multifilament yarn.

Hereinafter, the present invention will be described based on examples. The evaluation method used in the present invention is as follows.
(1) Total fineness, boiling water shrinkage rate Measured according to the fineness and hot water shrinkage rate specified in JIS L 1013.
(2) Cover factor It calculated | required with the following formulas using the warp density of the textile fabric, the weft density, and the total fineness measured by said (1).

{Warn density (main / 2.54cm) x (warp fineness (D)) ^1/2 } + {Weft density (main / 2.54cm) x (weft fineness (D)) ^1/2 }
(3) Anti-transparency A blackboard or white board is applied to the fabric, and the brightness (L value) is measured with a spectrocolorimeter CM2600d (manufactured by Konica Minolta) using a spectrocolorimeter. The L value of only the white plate is measured, and the following equation is obtained from the measured values.

Permeability (%) = ((1− (LfW−LfB) / (LW−LB)) × 100
(Here, LfW = L value of the fabric when the white board is backed up LfB = L value of the fabric when the blackboard is backed up LW = L value of the white board only LB = L value of the blackboard only)
(4) L value Measured with a spectrocolorimeter CM2600d (manufactured by Konica Minolta).

Example 1
Polyethylene terephthalate containing 8% by mole of isophthalic acid as a copolymerization component and 0.1% by weight of titanium oxide having an average particle diameter of 50 nm was melt-spun by a known method, and the spinning speed was 2600 m / min and the draw ratio was 1.85. , 22 dtex, 24 filaments (strength 3.0 cN / dtex, elongation 36%, boiling water shrinkage 20%). This polyester multifilament is used for warp and weft in a plain weave structure, and processed in a normal dyeing process, and a white yarn having a warp density of 270 / 2.54 cm, a weft density of 203 / 2.54 cm, and a cover factor of 2237 Finished in high density thin fabric. The obtained woven fabric was a woven fabric with a permeation resistance of 55% and was difficult to see through. A similar fabric was dyed black with a liquid dyeing machine at the time of dyeing and finished into a black high density thin fabric. The L value of the obtained woven fabric was 15, and the color development was good. The results are shown in Table 1.

(Comparative Example 1)
Polyethylene terephthalate containing 0.1% by weight of titanium oxide having an average particle diameter of 50 nm and containing no copolymer component is melt-spun by a known method, spinning speed is 2600 m / min, draw ratio is 1.85, 22 dtex, 24 filaments A polyester multifilament (strength 3.2 cN / dtex, elongation 36%, boiling water shrinkage 7%) was prepared. This polyester multifilament is used for warp and weft in a plain weave structure and processed in a normal dyeing process, and a white yarn having a warp density of 260 / 2.54 cm, a weft density of 203 / 2.54 cm, and a cover factor of 2075. Finished in high density thin fabric. The obtained woven fabric was a woven fabric having a see-through rate of 45%. A similar fabric was dyed black with a liquid dyeing machine at the time of dyeing and finished into a black high density thin fabric. The L value of the obtained woven fabric was 15.3, and the color development was good. The results are shown in Table 1.

(Comparative Example 2)
Polyethylene terephthalate containing 2% by weight of titanium oxide having an average particle diameter of 50 nm and containing no copolymer component is melt-spun by a known method, spinning speed is 2600 m / min, draw ratio is 1.85, 22 dtex, 24 filaments (strength A polyester multifilament having 3.1 cN / dtex, elongation of 36%, boiling water shrinkage of 7% was prepared. This polyester multifilament is used for warp and weft in a plain weave structure and processed in a normal dyeing process, and a white yarn having a warp density of 260 / 2.54 cm, a weft density of 203 / 2.54 cm, and a cover factor of 2075. Finished in high density thin fabric. The resulting woven fabric was a woven fabric that was difficult to see through with a see-through rate of 58%. However, the same fabric was dyed black with a liquid dyeing machine at the time of dyeing and finished into a black high density thin fabric. The obtained fabric had an L value of 20 and had poor color development. It was. The results are shown in Table 1.

Claims (5)

A high density thin woven fabric comprising a polyester multifilament yarn having a cover factor of 2000 or more and satisfying the following requirements (a) to (c).
(A) The total fineness is 33 dtex or less,
(B) contains a copolymer component and has a boiling water shrinkage of 15% or more in the raw yarn,
(C) The content of white inorganic particles is 0.1% by weight or less. 2. The high-density thin fabric according to claim 1, comprising a polyester multifilament yarn having a single yarn fineness of 1 dtex or less. The copolymer component is dicarboxylic acid selected from oxalic acid, sebacic acid, phthalic acid and isophthalic acid, glycol selected from diethylene glycol, polyethylene glycol and neopentyl glycol, or bisphenol A and bisphenol sulfone. The high-density thin fabric according to claim 1 or 2. 2. The white inorganic particles are at least one selected from titanium oxide, zirconium oxide, magnesium oxide, silicon oxide, antimony oxide, zinc oxide, lead tungstate, calcium tungstate, and calcium carbonate. The high-density thin fabric in any one of -3. The polyester used for polyester multifilament yarn is polyethylene terephthalate, The high-density thin plain fabric in any one of Claims 1-4 characterized by the above-mentioned.