JPS61207640A - Raised knitted cloth - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a napped knitted fabric.

(Conventional technology) Conventionally, at least the bail yarn of napped fine fabrics.

Natural fiber spun yarn is often used, and it has excellent aesthetics, and is preferred for its soft texture and is used for special purposes such as formal wear. However.

Recently, its uses have become more general, not to mention everyday clothing.

When it came to be used in extremely harsh applications such as curtain fabrics, chair upholstery fabrics, and even car seat fabrics, it became known for its wash-and-wear properties and light resistance.

There is a growing demand for napped fabrics with excellent functionality such as abrasion resistance, durability, and dimensional stability, as well as durability for consumption. This round 1 synthetic fiber material has come to be used at least for napped pile yarn. However, when using synthetic fiber filament yarn, the napped texture is stiff and the napped fabric stands upright, making it difficult to fold the fabric.

Particularly when used as a fabric for upholstering chairs, the upright piles open at the folded part, causing the so-called bulge, where the texture of the fabric becomes visible from the surface.

To prevent this, attempts have been made to use synthetic fiber crimped yarn for the nine-ply napped pile yarn to soften the texture and hide the graininess. In the gap.

Napped pile yarns with free ends contract and crimp freely, resulting in the single fibers intertwining with each other and the napped yarns becoming blanket-like or felt-like, resulting in a product with extremely poor appearance and texture. .

(Problems to be Solved by the Invention) The present invention is made of synthetic fiber material with excellent functionality and durability, has good surface coverage of raised naps, has less eye irritation, and has excellent raised appearance and texture. The purpose is to obtain a fine napped fabric.

(Means for solving problems) In the present invention, the single yarn fineness is 0.5 to 5.0 denier.

Nylon 46 fiber crimped yarn with a crimp degree of 30 to 60% is arranged at least on the napped pile yarn, and
It is a napped knitted fabric with a pile length of 1 to 5 m.

The nylon 46 fiber intended here has 90 by weight or more of repeat units in one molecular chain (-NH-(CH2)4-NHC
Substantially composed of o-(CH2)4-CO, poly(
tetramethylene adipamide), which also contains 10% or less of a third component such as an I-capramide component, a hexamethylene adipamide component, a hexamethylene terephthalamide component, or an undecamethylene terephthalamide component. Polymerized products or polymers consisting of these, such as poly(#-pramid), poly(hexamethylene adipamide), poly(hexamethylene terephthalamide) & poly(undecamethylene terephthalamide), etc. % or less may be included.

tx Matting agents, pigments, light stabilizers as required.

Heat stabilizers, antioxidants, antistatic agents, dyeability improvers, adhesion improvers, etc. can be added.

All can be used, except those that have a serious adverse effect on the characteristics of the present invention depending on how they are blended.

In the present invention, the napped fine fabric is defined as 72. Double raschel fabric, moquette fabric, velvet with raised pile yarn obtained by knitting and weaving bi/I/knitted fabric with double or horizontal double structure and cutting the pile yarn between the fabric parts. It may be on any land.

In the present invention, at least the napped pile yarn of the napped knitted fabric must be a crimped yarn made of the above-mentioned nylon 46 fiber yarn with a single yarn fineness of 0.5 to 5 deniers and a crimp degree of 30 to 60%. If the single yarn fineness is less than 0.5 denier, it will be too soft and will not stand up, and if it exceeds 5 denier, the texture will become hard, which is not good.

Further, if the degree of crimp is less than 30 inches, the surface coverage of the nap is poor, and it is easy to cause eye irritation, and the texture of the nap part becomes hard, which is not good.

Next, when the degree of crimp is 60 cm or more, the crimp of the single fibers becomes intertwined with each other, although there is little crimping, resulting in a felt-like appearance and a decrease in the appearance of the raised pile part.
It is not good because it also impairs color development. Ground yarns other than the napped pile yarns that make up the napped fine fabrics (nine or weft yarns)
The weft yarn or the warp yarn may be the same nylon 46 fiber yarn as the raised pile part, or may be another fiber yarn.

Further, the pile length of the napped fine fabric must be 1 m to 5 ff. If it is less than 1M, the characteristics of the napped knitted fabric will be lost, and if it exceeds 5IllII, the napped fabric will tend to curl when subjected to external forces, and the appearance will deteriorate.

Further, as the crimped yarn, a false twisted yarn is preferable from the viewpoint of productivity and uniformity, but for example, a pressed yarn can be used.

It may also be a yarn obtained by other crimping means such as a shaped yarn and then processed.

The basis weight of the napped knitted fabric is determined by the intended final product.

(Function) One of the characteristics of the nylon 46 fiber intended in the present invention is that it has a melting point of 275°C or higher, which is extremely high compared to the melting point of nylon 6, nylon 66, polyester, etc., which is 230 to 260°C. The temperature is high, and the crimping and shaping process and setting temperature are also high. For this reason, it is suitable for post-processing such as dyeing after shaping.

A crimped yarn with small shrinkage and excellent one-dimensional stability and crimp stiffness can be obtained.

Napped knitted fabrics made by using crimped yarns made of materials other than conventional nylon 46 fibers as napped pile yarns and cutting the pile yarns between the ground parts are subjected to relaxing scouring after the vile cutting or during dyeing. The hot water treatment causes shrinkage and crimp, and one end of the pile becomes free, allowing the tightly cut pile fibers to move freely. As a result, the single fibers that form the pile intertwine with each other, forming a felted surface that is different from the napped pile. be.

In the present invention, since the crimped nylon 46 yarn with the +m thread is extremely dimensionally stable, shrinkage and crimping are small during heat treatment after pile cutting, and single fibers do not become entangled. In addition, it has excellent crimpability, provides high coverage of the raised portions, prevents eye irritation, and stands upright on the raised portions, providing excellent texture and appearance.

In addition, in the present invention, the degree of crimp is measured as follows.

crimp degree Make 8 rolls with a lap reel with a circumference of 1125m.

After immersing this in 60℃ hot water for 5 minutes without any load, 0.2x1
Apply a load of 6 r/d and measure the length a after 1 minute. Next, remove the load and dry at 60℃ for 30 minutes without load.
0.002X16f left in %RH atmosphere for over 1 hour
Measure the length b after 1 minute with an initial load of /d. From this, the degree of crimp is calculated using the following formula.

-b Crinkage degree (chi) --x 100 (Example) The structure and effects of the present invention will be explained below using Examples.

The present invention is not limited by the following examples.

Example 1 Melt-spun at 310°C using nylon 46 chips as raw material,
The obtained undrawn yarn was drawn using a hot plate held at 210°C to form a 140 denier 1v48 filament (
Obtained Monkey filament.

Next, false twisting was performed at a false twisting temperature of 245° C. and a false twist number of 2,560 T/M to obtain a crimped yarn with a degree of crimp of 50%. The crimped yarn was additionally twisted at 5200 T/M, sized as a warp yarn, and prepared as a ground warp yarn and a pile yarn.

Further, the same yarn was prepared as a weft, and a warp double-layered fabric was woven using a velvet loom with a warp yarn density of 65 warp yarns/inch, a warp bi-yarn yarn 65 yarns/inch, and a weft density of 122 yarns/inch.

This was pile cut on the machine, scoured and dried, then heat set at 200℃, and then acidic dye was used to adjust the pH to 95℃.
Finished by anti-dying for 60 minutes at ℃, and the final pile length was 1.
A napped fabric with a length of 8 m and a basis weight of 350 f/s/ was obtained. The napped fabric has a soft and voluminous upright part, and is a veggie-like fabric with excellent texture and appearance. 9. Example 2゜A 100-deny 1v30 filament obtained in the same manner as in Example 1 using nylon 46 chips as the pile yarn, crimped yarn with a degree of crimp of 50% was used as the pile yarn, ground insertion yarn, and chain yarn, and a 22G 6-piece dub μ was used. 46 courses on Russell machine, 2
Knitted with a density of 2-way μ, then cut in the center.

The resulting raised knitted fabric is brushed and preset, then dyed at 95°C for 60 minutes using an acid dye, and finished with a resin treatment on the back side. The pile height of the obtained napped knitted fabric is
It was 3.5 sm, and the basis weight was 800 f/i. The napped knitted fabric has crimped bis that stand upright, has soft and voluminous legs, has excellent texture and pile coverage, and is hard to cause bulge defects.

(Effects) By using synthetic fiber crimped yarn with a high melting point and excellent heat resistance in the napped part, shrinkage and crimping are avoided during heating processes such as presetting and dyeing after knitting and weaving into napped knitted fabrics. There are no problems such as tangles, and the soft and voluminous hair stands upright.
Good surface coverage of the pilsed area, less eye irritation, and a pilsed appearance.

A napped knitted fabric with excellent texture was obtained.

Claims (1)

[Claims] Single yarn fineness is 0.5-5.0 denier, crimp degree is 30-30
60% nylon 46 fiber crimped yarn is arranged at least in the raised pile yarn, and the pile length is 1 to 5.
A napped knitted fabric characterized by having a diameter of mm.