JP2001303410A - Raised fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a raised fabric having a high pile density, excellent in hair falling properties and having a soft touch feeling, slightly causing finger marks or a white fading feeling and excellent in deep color properties and brightness and to provide a method for producing the raised fabric. SOLUTION: This raised fabric is obtained by forming cut piles from polyester multifilament yarns and has <=3 hue difference ΔE between the lateral face and the cross section of the polyester multifilament yarns when dyed so as to provide >=30 lightness index L of the lateral face of the polyester multifilament yarns.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a napped fabric having a cut pile formed thereon, and more particularly, to a dyed fabric which, when dyed, hardly generates finger marks on the pile surface and has a low white blur feeling. The present invention relates to a napped fabric having excellent deep color and sharpness.

[0002]

2. Description of the Related Art Conventionally, in a napped fabric in which a cut pile is formed, there has been a problem that a contact mark, that is, a finger mark is generated on the pile surface, and the commercial value is extremely poor.

[0003] The occurrence of the finger mark is considered to be a phenomenon caused by a difference in the nap angle of the pile yarn or a difference in dyeing between the pile yarn and the ground texture yarn. Has been proposed.

[0004] For example, as a method of eliminating the difference in pile angle of pile yarn, a method of using a yarn with a large fineness that does not easily change the pile angle, a method of reducing the number of piles,
Alternatively, a method has been studied in which a crimped yarn is used as the pile yarn, the nap angle is disturbed in advance, and the direction of the pile yarn is made random.

However, in the method (1), the texture becomes hard and the quality as a nap fabric is inferior. In the method (1), the ground structure is visible, the hair fall resistance is poor, and the quality as a cut pile nap fabric is further inferior. As the fineness of the pile becomes smaller, that is, as the number of piles increases, the effect of the pile becomes significantly lower and the problem that a delicate texture cannot be obtained occurs. It is not accepted in markets where aesthetics are required.

On the other hand, as a method of reducing the dyeing difference between the pile yarn and the ground texture yarn, the pile is made of a fiber having a small reflection from the side or cross section of the fiber, for example, a fiber containing a large amount of a matting agent such as titanium dioxide. Although a method of forming the same is known, there is a problem that the effect is significantly reduced as the fineness of the pile yarn is reduced as described above.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, to provide a high pile density, excellent hair fall, a soft texture, and the occurrence of finger marks. It is an object of the present invention to provide a napped fabric which is less susceptible to blur and white blur, is excellent in deep color and sharpness, and a method for producing the same.

[0008]

Means for Solving the Problems The present inventors have conducted intensive studies to achieve the above object and as a result, have found that a desired napped fabric can be obtained when a low-orientation heat-treated yarn is used as a pile yarn. did.

That is, according to the present invention, there is provided a napped fabric in which a cut pile is formed of polyester multifilament yarn, and when dyed so that the lightness index L of the polyester multifilament yarn side surface is 30 or less, A napped fabric characterized in that the hue difference ΔE between the side surface and the cross section of the polyester multifilament yarn is 3 or less, and a polyester multifilament having a boiling water shrinkage of 3.0% or less and a birefringence Δn of 0.12 or less. A method for producing a napped fabric is provided, wherein the napped fabric is formed by using the yarn as a pile yarn, and subsequently, the pile yarn is cut to form a cut pile.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
In the napped fabric of the present invention, a cut pile is formed by the polyester multifilament yarn. As a method of forming the cut pile, a conventionally known method can be arbitrarily adopted,
For example, knit a pile structure such as sinker pile, pole tricot, double raschel and cut the pile, or cut the pile with a tricot pile knitting using a napping machine and then cut the loop pile. Can be manufactured. In the case of a woven fabric, a moquette structure may be woven and center-cut.

In the napped fabric according to the present invention, when the polyester multifilament yarn forming the cut pile is dyed into a so-called medium dark hue in which the lightness index L of the side surface is 30 or less, the polyester multifilament yarn is used. It is important that the hue difference ΔE between the side surface and the cross section be 3 or less.

That is, according to the study of the present inventors, the generation of finger marks particularly in a nap cloth having a cut pile is caused by the difference in the nap angle of the pile yarn or the dyeing of the pile yarn with the ground texture yarn. Due to the hue difference between the side surface and the cross section of the yarn forming the cut pile, not only the arrival difference, but when controlling this hue difference to a certain range,
It has been found that the generation of finger marks can be prevented as much as possible.

The above-mentioned hue difference is caused, for example, by a dyeing difference of a dye caused by a difference in crystallinity or orientation between side and cross-sectional directions of a normal polyester multifilament drawn yarn when used. In order to obtain the napped fabric of the present invention, for example, it is necessary to use a polyester multifilament yarn obtained by the following method as a pile yarn to reduce the dyeing difference between the side surface and the cross section of the yarn.

That is, since a normal polyester multifilament drawn yarn is subjected to a heat treatment under tension in order to suppress heat shrinkage, it becomes a highly oriented yarn, the dyeing property is extremely reduced, and the side and cross sections of the yarn are reduced. And the dyeing difference between the dyes becomes large, and the object of the present invention cannot be achieved.

In the present invention, in order to suppress heat shrinkage without increasing the orientation, for example, a polyester semi-stretched yarn or a partially oriented yarn (POY) is used at 180 ° C. to 220 ° C.
To obtain a polyester multifilament yarn having a boiling water shrinkage (BWS) of 3% or less and a birefringence Δn of 0.12 or less, and using this as a pile yarn to form a napped fabric. The yarn is cut to form a cut pile.

The pile density of the napped fabric of the present invention may be appropriately set according to the intended use. For example, for piles which are expected to be used under relatively severe conditions such as car seat fabrics, the pile density is 50,000 to 220,000.
The range of dtex / cm ² is desirable.

Scouring, heat treatment, and
Drying and finishing heat treatment may be performed under conditions generally employed. In addition, when the above-described napkin fabric is dyed in a so-called medium dark hue in which the lightness index L of the side surface of the polyester multifilament yarn forming the cut pile is 30 or less, the effect of the present invention is remarkably exhibited, It is possible to obtain a raised fabric without inger mark or white blur.

[0018]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, which should not be construed as limiting the present invention. In addition, each physical property in an Example was measured by the following method.

(1) Boiling water shrinkage (BWS) Using a measuring machine having a circumference of 1.25 m, a sample is sampled for 10 rotations to make a skein, and the skein is hung on a hanging nail of a scale plate. Hang a load of 1/33 g of the total fineness (dtex) of the skein and read the skein length L1 before processing. Then remove the load and put the skein in a cotton bag and soak in boiling water for 30 minutes. After that, the skein was taken out, dried with filter paper, air-dried for 24 hours, again hung on the hanging nail of the scale plate, the same load was hung on the lower part, and the skein length L2 after the treatment was read and calculated by the following formula. .

[0020]

(Equation 1)

(2) Birefringence (△ n) Using 1-bromonaphthalene as a permeating liquid, the number of interference fringes: n, the rotation angle of the compensator: θ, under monochromatic light with a wavelength of 530 nm using a polarizing microscope. Fiber diameter: X (nm)
Is measured, and Δn is calculated by the following equation.

[0022]

(Equation 2)

(3) The lightness index L and the hue difference ΔE The lightness index L is calculated based on the Macbeth Color-
Eye) Using model CE-3100, measure Y and Yn in a light source D65 and a 10-degree field of view, and use JIS Z8701 (a color display method based on a 2-degree XYZ system) or JIS Z872.
Using the tristimulus value Y specified in 8 (color display method based on a 10-degree visual field XYZ system), it was obtained from the following equation. Lightness index L
The smaller the value, the deeper the dyeing.

[0024]

(Equation 3)

The hue difference ΔE is obtained by measuring the difference Δa between the a value and the b value of the polyester multifilament yarn when measuring the lightness index L of the side and the cross section of the polyester multifilament yarn at the same time according to JIS Z 8730 (dye method). It was determined from the difference ΔL between Δb and L according to the following equation.

[0026]

(Equation 4)

When measuring the L, a, and b values of the side surfaces of the polyester multifilament yarn, the measurements were performed without cutting the pile yarn of the pile knitted fabric with a 28-gauge pole sinker. In measuring the cross section of the filament yarn, the measurement was performed after cutting the pile yarn.

Example 1 A polyethylene terephthalate chip was spun at a spinning temperature of 275 ° C., a first take-up roller speed of 6000 m / min, and a second take-up roller speed of 6000 m / min.
Minute spinning, elongation 150%, total fineness 250
After obtaining an intermediate oriented multi-filament yarn of dtex / 48 filament, the multi-filament yarn was heated at a heating length of 2 m, a heat treatment temperature of 200 ° C., and a heat treatment speed of 500 m /
Then, heat treatment was performed under the conditions of an overfeed rate of 5% to obtain a polyester filament yarn having a boiling water shrinkage (BWS) of 1.2% and Δn of 0.094.

Next, a ground knitting machine equipped with a 28-gauge pole sinker manufactured by KARL MAYER was used to apply 167 dt to the ground structure.
ex / 48 filament polyester multifilament ordinary drawn yarn, full-set arrangement of the above heat-treated polyester filament yarn on each reed in a pile structure,
Knitting was performed at a knitting density of 23.6 / 11.0 per 1 cm of a wale to obtain a napped knitted fabric on which a 2.5 mm loop pile was formed.

Next, the tip of the pile was cut by 0.2 mm with a shearing machine manufactured by Nikki Co., Ltd. to obtain a cut pile-shaped raised knitted fabric. The fabric is dried using a dry heat setter for 18 hours.
Heat treatment was performed at a temperature of 0 ° C. for 45 seconds in a spread state. Then, the above knitted fabric was subjected to a liquid flow dyeing machine manufactured by Hisaka Manufacturing Co., Ltd.
Stained at 0 ° C for 45 minutes. The dye composition at this time was as follows.

Dianix Black HG-FS 6.0% owf Dianix Red HL-FS 0.7% owf Dianix Orange HFFG-FS 1.0% owf Irgasol DAM 1 g / l acetic acid 0.5 g / l where Dianix is Dyster Co., Ltd., Irgasol
It is a dye manufactured by Specialty Chemicals Co., Ltd.

After dyeing, the nappi knitted fabric is dried at 120 ° C. for 2 minutes using a short loop drier manufactured by Hirano Tecseed Co., Ltd. After drying, wrinkles generated during the dyeing are removed by Hirano Tecseed Co., Ltd. In dry heat setter, 16
Heat treatment was performed at 0 ° C. × 1 minute. Table 1 shows the obtained standing knitted fabric.
As shown in the figure, the color difference between the side and the cross section of the polyester multifilament yarn forming the cut pile was small, no finger marks were generated, and the knitted fabric had no white blur.

Example 2 The procedure of Example 1 was repeated, except that the dye composition was changed as follows. Dianix Yellow KIS-M 1.78% owf Dianix Red HL-FS 0.95% owf Dianix Blue KIS-M 1.5% owf Irgasol DAM 1g / l Acetic acid 0.5g / l The knitted fabric obtained is shown in Table 1. As shown in the figure, the color difference between the side and the cross section of the polyester multifilament yarn forming the cut pile was small, no finger marks were generated, and the knitted fabric had no white blur.

Comparative Example 1 The procedure of Example 1 was repeated except that the polyester multifilament yarn forming the cut pile was a heat-treated polyester multifilament yarn having a BWS of 3.5% and a Δn of 0.142. Performed as in Example 1. As shown in Table 1, the obtained knitted fabric had a large hue difference between the side surface and the cross-section of the polyester multifilament yarn forming the cut pile, had a finger mark, and had a large white blurring feeling. Was.

[0035]

[Table 1]

[0036]

According to the present invention, the pile density is high, the hair is excellent in hair fall, the soft texture is obtained, and the occurrence of finger marks and white blur are less, and the deep color and the sharpness are excellent. And a method of manufacturing the same.

Continued on front page F-term (reference) 3B154 AA07 AB24 BA26 BB12 BB53 BF20 BF21 DA09 DA10 DA13 4L002 AA07 AB02 AC02 AC06 BB04 CA01 CB03 DA01 DA02 DA04 EA00 4L048 AA20 AA21 AA45 AA46 AA50 AB07 AC07 BA30 CA00 EB05

Claims (2)

[Claims] 1. A napped fabric comprising a cut pile formed of polyester multifilament yarns, the polyester multifilament yarn being dyed such that the lightness index L of the side of the polyester multifilament yarn is 30 or less. A napped fabric, wherein the hue difference ΔE between the side surface and the cross section is 3 or less. 2. The shrinkage ratio of boiling water is 3.0% or less, and the birefringence index Δ
A method for producing a napped fabric, comprising forming a napped fabric using a polyester multifilament yarn having n of 0.12 or less as a pile yarn, and subsequently cutting the pile yarn to form a cut pile.