JPS6045628A - Composite yarn - 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 The present invention relates to a composite yarn which is a single yarn with good mating and which does not require sizing when used as a warp.

Conventionally, filament yarn was placed in the core and natural fibers such as cotton fibers were placed in the outer layer.1. A large number of composite yarns, so-called core yarns, are being produced in response to the need for lighter and thinner fabrics.

However, filament yarns usually have very little fluff;
Furthermore, since it is a continuous yarn, it has poor affinity with the external fiber material forming the core yarn, and therefore slips and does not form a good composite yarn. For this reason, when compounding, an extremely high m-number (for example, 90f') t/m or more is added and placed in the outer layer.

There is a way to stop fiber materials from slipping using force.

Therefore, the core yarn obtained in this manner is inevitably of inferior quality.

On the other hand, due to the trend toward natural materials, and in response to demands for improved texture and functionality, many methods of blending and compositing different types of natural fiber materials have been implemented.

For example, there are many examples such as combinations of wool fibers and cotton fibers, combinations of wool fibers and hemp fibers, combinations of silk fibers and cotton fibers, etc. However, when looking at each of these yarns, due to the large differences in fiber length, fineness, bending resistance, etc., the spinning process and processing machinery are not suitable for spinning, so it is necessary to match the fiber length to the shorter fiber length of the other yarn. However, it is necessary to twist and twist the yarn knowing that it will increase the yarn count, which is extremely difficult, and the yarn obtained also has an unsatisfactory texture.

In addition, when these yarns are woven without sizing with single yarns, only one of the materials slips or the yarn breaks frequently, so they are usually used as double yarns.

The present invention was developed as a result of intensive research into a yarn form that does not have the drawbacks of yarns obtained by these conventional methods, has excellent post-processability, and has high quality and texture. The purpose of the present invention is to provide a composite yarn which can be woven without gluing using a single yarn having excellent folding and pleating properties and dimensional stability.

The present invention has the following configuration to achieve this object. That is, the present invention provides a composite yarn made of polyester, wherein the spun yarn has a fuzz index of at least 300 pieces/10 m with one or more fuzz, and has a weight of 60 to 85 with respect to the entire composite yarn. %, and further characterized in that the twist direction of the composite yarn is the same as the twist direction of the spun yarn.

The present invention will be explained in detail below.

The present invention utilizes the theory of core yarn, and it is possible to avoid yarn unevenness when fibers are mixed together, and the fabric weight becomes too large when yarns are mixed together, and due to the effects of different materials. The structure of the core yarn was used immediately after the appearance of color unevenness on the mask.

However, the biggest drawback of core yarn is that it is yarn. Therefore, accidents often occur in which the outer layer fibers easily slip, leaving only the core yarn. Therefore, the inventors of the present invention investigated the various properties of the core material and found that a spun yarn containing polyester fibers having high yarn strength and a large amount of fuzz is most suitable as the core yarn. In the present invention, the spun yarn includes polyester fibers. The spun yarn containing the polyester fiber is preferably 100% polyester fiber, but there is no problem if it contains other fibers in the form of a blend within a range not exceeding 50%.

Further, the spun yarn may be a single yarn, a double yarn, or a twisted yarn of more than one yarn, but a single yarn is usually preferable.

In the case of a double-twisted yarn or a more twisted yarn in the twist direction of the spun yarn described in the present invention, it refers to the final twist direction of the yarn. When these double threads are used as the core thread, the elongation of the composite thread can be improved.

The spun yarn has an average tenacity of 150 y or more, preferably 2
00 f or more, and preferably has a strong fluctuation rate of 15% or less. This is important from a production perspective.

Furthermore, the spun yarn should have a fuzz index of at least 300:y/10m with a fuzz of 1n or more, preferably at least soo/10m and no more than 1100/10m, and more preferably from 500 to 1000/10m.

This is to improve compatibility with the fiber bundles twisted in the outer layer and to prevent slipping. The fluff index referred to herein is measured using an F-index tester manufactured by Shikishimabo Co., Ltd.

Next, the proportion of spun yarn in the composite yarn is 60 to 85
It has to be a heavy weight. t'L is determined from the viewpoints of post-processability, smooth texture, and cost merit. If it is less than 60% by weight, the yarn strength will be insufficient or the yarn will become thicker, while if it exceeds 85% by weight, not only will the spinning quality deteriorate, but the texture will also deteriorate. Among these, wool fibers are preferred in terms of texture.

The form of the fiber bundle refers to the form of yarn, that is, fleece.

Furthermore, the twist direction of the composite yarn must be the same as the twist direction of the spun yarn. This is to give tightness to the composite yarn and increase its affinity. From this point of view, the twist coefficient (in inch system) is preferably within the range of 2.0 to 4.0.

As described above, according to the present invention, it is possible to obtain a composite yarn which has excellent texture and pleatability, and which does not cause slippage between the core material and the sheath leaf material during ironing, and furthermore, this composite yarn has excellent texture and pleatability. It has the remarkable effect that it has excellent properties such as being able to be woven with a single yarn without sizing. Further, this composite yarn has the characteristics of being a uniform yarn and having high yarn strength.

When spinning 7 and 2 from the front roller, a polyester fiber spun yarn of 30 (English cotton count, two-way twist, 19
t/1n-) is supplied just before the front roller, superimposed, and twisted in two directions at 18.8t/in.
/36 (metric count) composite yarn was manufactured. The yarn strength of this composite yarn is 550F, and worsted yarn (VB2 (
It was approximately 2.9 times the metric count). This composite yarn was warped without sizing, and a plain woven fabric (warp density: 65 threads/in, weft density: 58 threads/in) was woven. Warp cut f
1. is 0.5/1hr. There was no difference from the case of 2/48'S. The fabric obtained by dyeing and processing the obtained tl fabric has particularly excellent dimensional stability and pleatability, has a luxurious feel, has a pretty touch, and is immediately notable for its water absorption and hygroscopic properties.

Example 2 Composite yarn of 1/36 (metric count), which is the same as the actual leprosy example, was manufactured, and then this composite yarn was warped without sizing to produce a plain woven fabric (warp density: 65 yarns/in, weft). Density 58/
In, ) was woven, the weavability was examined, and the results are shown in the table. At this time, the twist coefficient (in inch system) of the composite yarn was varied in advance, and the spun yarn of polyester fiber was 30'8 l mm.
The fluff above was changed by the fluff index. In addition, the fluff index (
/10m) was measured using an F-index tester manufactured by Shikishima Boseki KK.

○... Very good weavability Δ... Good weavability ×... Poor weavability As a result, the fluff index (ko/10m) of fluff of 1 dragon or more as in the present invention is 300 to 1100 Coefficient of twist is 2 at /10m
．． 0 to 4.0 indicates good weavability 0 Patent applicant Toyobo Co., Ltd.

Claims (1)

[Scope of Claims] 1. A composite yarn consisting of a spun yarn containing polyester JLL fibers and a fiber bundle of natural fibers or regenerated fibers twisted in the outer layer of the spun yarn, wherein the spun yarn has a diameter of 1rLm. The above fuzz has a fuzz index of at least 300″:I/10m or more, and accounts for 60 to 85% of the entire composite yarn, and the twist direction of the composite yarn is the same as the twist direction of the spun yarn. 2. The composite yarn according to claim 1, wherein the natural fiber is wool fiber. 3. The composite yarn according to claim 1, wherein the natural fiber is cotton fiber. Composite yarn. 4. The composite yarn according to claim 1, wherein the natural fiber is hemp fiber. 5. The composite yarn according to claim 1, wherein the recycled fiber is polynosic rayon.