JPH0280641A - High-density pile fabric - Google Patents

Abstract

PURPOSE:To obtain the subject fabric having high warp density and suitable as a pile fabric for mat by blending high-shrinkage polyvinyl chloride short fibers with low-melting polyester short fibers, using the blended fiber as weft and subjecting the woven fabric to dry-heat treatment to effect shrinkage of the fabric. CONSTITUTION:A spun yarn is produced by blending (A) high-shrinkage polyvinyl chloride short fibers having a dry-heat shrinkage of preferably >=35% at 100 deg.C for 3min with (B) low-melting polyester short fibers having a melting point of preferably <=110 deg.C at a ratio (A/B) of 60/40-80/20. The spun yarn is used as a weft and the woven fabric is heat-treated at dry-heat temperature of 95-105 deg.C under a condition to give a fabric having a shrinkage of 30-50% in weft direction.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to pile fabrics, particularly high-density pile fabrics for mats, in which the wefts are shrunk by heat treatment to increase the density of the pile yarns.

(Prior Art) Conventionally, pile fabrics, particularly for mats, have been woven as so-called high-density pile fabrics in which the warp density is increased at the fabric design stage and the pile density is dense.

However, this method is based on pile density (hereinafter referred to as pile density).
The denser the weaving, the more warp thread breakage occurs due to problems such as fuzz during weaving, causing one machine to stop working, resulting in poor operability and problems such as more defects in the gray fabric after weaving. Ta.

In order to solve this problem, in recent years polyvinyl chloride fiber, a material with a high heat shrinkage rate, has been used.

A method has been adopted in which a high-density woven fabric with a dense warp density is produced by weft-beating the fiber threads at a normal warp density and heat-treating the gray fabric after weaving.

However, when weft yarns are made of 100% polyvinyl chloride fibers and are processed as described above to produce high-density fabrics, the pile after heat shrinkage becomes uneven due to the behavior of the wefts during shrinkage, resulting in poor product quality. Significantly reduce value.

In addition, since such materials such as polyvinyl chloride fibers only have a shrinking effect, the piles around the edges of the pile fabric have weak pulling resistance, which poses a problem in product use.

(Means for Solving the Problems) The present invention solves the above-mentioned problems and provides a completely novel high-density pile fabric without pile shedding.

In other words, the present invention uses high shrinkage polyvinyl chloride short fibers (A
) (hereinafter referred to as PvC) and low melting point polyester staple fiber (B) (hereinafter referred to as PET) A/B 60/40~8
Spun yarn mixed at a ratio of 0/20 is used as the weft.

After weaving, heat treatment is performed at a dry heat temperature T in the range of 95°C≦T≦105°C, and heat shrinkage is performed so that the shrinkage rate S in the weft direction becomes 30%≦S≦50%. This invention relates to a high-density pile fabric with high density.

What is the high shrinkage polyvinyl chloride short fiber mentioned here?

In particular, short fibers refer to those with a dry heat shrinkage rate (100"CX 3 minutes) of 35% or more, and short fibers have a cut length of about 21:' to 3 dens. Also, low melting point polyester staple fibers , especially those with a melting point of 110°C or lower.

Next, the blend ratio for spinning is PVC/PET
60/40 to 80/20 is preferred. PVC/PET
If the PVC ratio is less than 60/40, the shrinkage rate due to heat treatment will decrease and a high-density fabric will not be obtained. Also,
If the ratio of PET is lower than PVC/PET 80/20, the adhesive effect after heat treatment will be poor, and pile removal cannot be prevented.

Further, the dry heat temperature T is preferably 95°C≦T≦105°C,
If T is lower than 95°C, the desired shrinkage rate cannot be obtained due to insufficient temperature. Also, if T is higher than 105°C,
The high temperature generates a bad odor, making it undesirable for work. and,
After heat treatment, PVC may be deformed, discolored, and hardened, reducing product value.

Next, the heat shrinkage rate S of the weft is preferably 30%≦S≦50%. The shrinkage rate is controlled by the dry heat temperature and treatment time, and in this case, the heat treatment time is particularly important. In particular, the shrinkage rate was limited to 30% to 50%, which was determined based on the existing loom width, product specification width, pile standing, and various physical properties.

That is, if S is lower than 30%, there will be defects such as poor pile standing. In addition, when S is higher than 50%, the pile stands too densely and floats as described above.

The pile becomes noticeable and the quality of the product deteriorates.

If weaving and heat treatment are performed under the above conditions, it is possible to produce a high-density pile fabric that has a high pile density and prevents pile removal.

Example Warp: 100% cotton 20°W/2. Acrylic on pile yarn 1
00%to''/l, weft yarn PVC/PET 80/20
(7) Using 16"/2 spun yarn, warp density 32 threads/fu' (
The pile thread is 1/2 of the warp thread)! A bath mat was woven at a density of 25 threads/i:'. Weaving was possible without any problems in terms of weaving operability. After the machine is lifted, the gray machine is heated to 100'c.
When the weft was shrunk by dry heat treatment for Xs,
I was able to increase the density to 46 lines/7.

Next, we investigated the pulling strength of the pile system (JiSt, -
1021) In the conventional weft made of polyvinyl chloride fiber only, 1
0.051 g, whereas the weight of the present invention was 5210 g, which was a significant effect.

In addition, when we examined the texture of the mat, we found that it had a hardness (JIS)
L-1096) Compared to the conventional product's 280 g on a handle-o-meter, the product of the present invention weighed more than 350 g, which gave it a hard feel, and the adhesive effect of the low-melting point polyester short fibers could be sufficiently obtained.

(Effects of the Invention) As described above, the fact that a high-density pile fabric for mats with unprecedented pile pull-out resistance could be obtained by simply shrinking it by dry heat treatment is extremely effective industrially.

Patent applicant: Unitika Co., Ltd.

Claims (1)

[Claims] (1) High shrinkage polyvinyl chloride short fibers (A) and low melting point polyester short fibers (B) are combined into A/B60/40 to 8
Using spun yarn mixed at a ratio of 0/20 as the weft,
After weaving, heat treatment is performed at a dry heat temperature T in the range of 95°C≦T≦105°C, and heat shrinkage is performed so that the shrinkage rate S in the weft direction becomes 30%≦S≦50%, so that the warp density becomes high density. High-density pile fabric.