JPS6039768B2 - blended yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a blended yarn that can be made into a knitted fabric and has a good hand.

More specifically, the present invention relates to a thread threaded to make a knitted fabric having a good feel similar to a knitted fabric made of animal hair such as angora hair. Conventionally, it is obtained by blending animal hair such as angora with wool and other fibers.

It is well known that so-called Angora style knitted fabrics are praised for their excellent appearance and texture. However, animal hair such as Angora is not only extremely expensive, but also has poor weather resistance and abrasion resistance, so it tends to discolor and pull out when used for a long period of time, resulting in poor appearance and quality. have

On the other hand, attempts have been made to obtain angora-like knitted fabrics by blending cut fibers of synthetic fibers such as nylon and acrylic fibers, but these do not have sufficient appearance or quality and are no more than imitations.

In other words, because synthetic fibers such as nylon and acrylic are sharpened using this solvent, unlike hydrolysis reactions, they tend to cause single-fiber warping, and acrylic fibers tend to weaken in hot water. It also has the disadvantage that it has poor piloerection properties, and also has poor heat setting properties, so it tends to fall out easily. N6
．． Polyamide fibers such as 66 also have the disadvantage of having a low modulus of elasticity in hot water and easily becoming flattened, and as a result, only products that are coarse and hard and have poor appearance can be obtained. It is. On the other hand, as in Japanese Patent Publication No. 44-18371, fibers with varying thickness are obtained by separating the composite components from a composite fiber configured to have thick unevenness in the longitudinal direction. has been proposed, but the sharpened fibers made of such composite fibers have nonuniform sharpened ends and nonuniform lengths, and are not homogeneous sharpened fibers at both ends, and have an uneven periodicity. Because of its long length, in order to obtain fibers with a length of 20 to 15 W, most of the cut surfaces are not sharpened. Therefore, blended yarns made of such fibers have the disadvantage that their coarse and hard texture is extremely noticeable. there were.

In view of the drawbacks of sharpened fibers made of various synthetic fibers,
A method of hydrolyzing polyester fibers to make them sharper was proposed, and they succeeded in improving the rough and hard texture.

However, blended yarns made of sharpened fibers made entirely of polyethylene terephthalate, which is a typical polyester fiber, have not been able to provide knitted fabrics that are satisfactory in terms of appearance and quality.

In other words, a blended yarn of sharpened fibers made of polyethylene terephthalate fibers cannot satisfy the flexibility and resiliency of animal hair at the same time, and also has the disadvantage of easily causing curly hair and causing a prickling sensation on the skin. There was a fatal flaw. In view of these conventional drawbacks, the present invention creates an angora-like knitted fabric that has the same excellent appearance and quality as when animal hair such as angora is blended, and is also superior to animal hair in terms of durability. As a result of extensive research into blended yarns for this purpose, we have arrived at the present invention.

That is, the present invention has the following technology.

'a} Maximum major diameter part 0.02~0.1 pillow rib, length 20~1
A blended yarn composed of 3 to 60% polybutylene terephthalate fibers with 5 ribs and sharpened substantially dotted ends, and 40 to 97% other fibers, and whose surface A blended yarn in which five or more fluffs of one rib or more in length are formed in the part 'a). By adopting such a technical configuration, the present invention is the first synthetic fiber to have properties that are extremely similar to animal hair, having both flexibility and rebound properties, and which is permanently curly and does not leave a tingling sensation on the skin. Therefore, it is possible to provide an excellent animal hair textured fabric free of turbidity. The present invention will be explained in detail below.

The polybutylene terephthalate fiber that is the constituent material of the yarn of the present invention has a maximum length of 0.02 to 0.1 cm and a length of 2
It is essential that the fibers are sharpened at both ends on the 0 to 150 side, and only by using these fibers can an animal hair-like appearance and texture be obtained, as well as excellent hair-pulling resistance.

In experiments conducted by the present inventors, polybutylene terephthalate fibers were found to: 1) be easy to raise by kneading in hot water; 2) have good setting properties, and the raised fibers are difficult to fall out; elastic modulus, bending recovery. Physical properties such as texture are similar to those of animal hair {4} It has characteristics such as gradual sharpening and easy formation of dotted tips.

The polybutylene terephthalate fiber used in the present invention provides a blended yarn consisting of the above-mentioned glue and sharpened fibers that are significantly different from the polyethylene terephthalate fiber in terms of [4'].

That is, polybutylene terephthalate fibers have a lower elastic modulus than polyethylene terephthalate fibers, but have an excellent bending recovery rate, and behave extremely slowly in the hydrolysis reaction during sharpening.

When the sharpened fibers are made into a blended yarn, these different factors act synergistically, resulting in significantly different performance. In other words, the blended fabric consisting of the former has excellent anti-twill strength despite its very soft hair quality, and has two characteristics: it does not cause hair to become frizzy permanently, and it does not give a prickly feeling to the skin. It demonstrates important performance. In the present invention, the sharpening of both ends not only makes the appearance and texture more Angora-like, but also has the characteristic that it is easier to raise hairs during the process compared to a non-sharpened vertical prosthesis of the same thickness and length. It is an essential element. Additionally, the fibers must be sharpened at substantially both ends;
If the non-pointed ends are exposed on the surface of the thread, it becomes coarse and hard, impairing the animal hair-like texture, which is not preferable. Regarding the shape of the sharpened portion and the method of sharpening, the tip is substantially close to a point;
It is preferable that the slope length is long, the slope is gradually sharpened, and the shape is uniformly symmetrical. Fibers of this type are preferably used because their texture is more like that of animal hair and their tips do not curl. An example of a method for obtaining fibers in this form is the method disclosed in Japanese Patent Publication No. 50-40195. In the present invention, the sharpened fibers used have a maximum major axis of 0.02 to 0.1 and a length (total length) of 20 to 150.

If the major axis is less than 0.02 mm, the stiffness will be 4 mm, making it difficult to raise the fluff in the subsequent process, and if it is 0.1 mm or more, the texture will be rough and hard, which is not preferable. Particularly preferably 0.
It is on the 03 to 0.08 side. If the length is less than 2 snouts,
Not only is it difficult to sharpen both ends, but there are
It is difficult to form fluff fibers that are longer than the length of the ship, and if the length is 150 legs or more, not only will process passability become poor, but the fluff will be too long, resulting in poor appearance and poor texture. do not have. A particularly preferred range is 30 to 12 m. In the present invention, there is no particular limitation on the cross section of the sharpened fiber.

In addition, the sharpened fibers have a moderate amount of winding (10 windings/winding) near the center.
(inch or less) is better in terms of hair removal. However, from the viewpoint of appearance and feel, it is preferable that at least one rib from the tip be substantially non-crimped. The fibers that are other constituents of the blended yarn of the present invention are not particularly limited, and one or more types can be selected from natural fibers such as wool and cotton, and synthetic fibers such as polyester, polyamide, and polyacrylic. .

In particular, those containing the following components are more preferable in terms of appearance, feel, spinnability, and strength. {i} Long axis 0.005 to 0.02 ribs, length 20 to 150 ribs, sharpened or non-sharpened, non-crimped, or 10 peaks/inch
3-60% synthetic fiber with crimp below {mouth} diameter 0.
01-0.03 skin, length 30-120 ribs, number of crimps 10-
30 threads/inch polyamide fiber 30-40% (all percentages are weight % based on the entire yarn).

Here, the above component... is a so-called down hair component that makes the texture of the knitted fabric softer. It is intended to improve sexual deterioration.

In the present invention, the composition ratio of sharp end fibers is 3 to 6%.
It is.

If the ratio is less than 3%, the nap is insufficient and a good texture cannot be imparted, and if it is more than 60%, the yarn will not be entwined enough and the physical properties of the yarn will be poor, and the fluff will cause problems in the process. This is not preferable because the permeability deteriorates. In the present invention, in order to have a good angora-like feel, the yarn must have, or be capable of developing, five or more fluffy fibers/fluff having tips with a length of ten sides or more.

Here, "able to develop" means that it is possible to raise the sharpened fibers without cutting them in a commonly known process such as scouring, dyeing, and finishing. For example, in the case of wool-based knitted fabrics, washing, weaving, It is expressed as a value that includes the fluffy fibers that appear in processes such as boiling, striped weaving, and steamed weaving. That is,
Even with a blended yarn having the structure of the present invention, if there are many fibers buried in the yarn, fibers with both ends present in the yarn, and forming loops, the number of fluffy fibers of the present invention is not 5/m. If it does not exist, it will not be possible to obtain the flavor of the Angola theory of the present invention.

The method for producing the yarn with a large amount of fluffy fibers having sharp edges according to the present invention is not particularly limited, and can be selected from any known method. For example, in the case of normal spinning, sharpened fibers with non-striped properties and low shrinkage tend to have more crimp and come out to the surface more easily than those with high shrinkage.

However, these depend on many factors such as fiber combination, thickness, length, crimp, etc., and by appropriately adjusting these conditions, the yarn of the present invention can be obtained. An example of a blended yarn obtained by the present invention is shown in FIG.

In the figure, 1 represents fibers with sharpened ends, and 2 represents other fibers. In the present invention, the sharpened fibers can be further made to have animal hair-like luster and texture by using conventionally known additives such as matting agents, softeners, and sliminess imparting agents.

The yarn of the present invention can be used alone or by inter-knitting or inter-weaving with a small amount of other yarns and then being fed into a normal dyeing process.
It is possible to obtain an angora-like knitted fabric as shown in the figure, and the product has the advantage of being superior to natural angora in terms of durability such as discoloration resistance, abrasion resistance, and hair-pulling resistance.

The present invention will be explained below using examples.

Example 1 One end of a bundle of polybutylene terephthalate fibers (thickness: 0.06 mm, length: 6 mm) was soaked in 43° NaOH solution and treated with 12000.6 powder to sharpen one end. ,
The other end was also treated under the same conditions, and the fibers with both ends sharpened were used to perform cilia spinning with the following configuration to obtain a No. 6 yarn.

Both ends sharpened fiber 15% nylon staple 20% (2.5 denier, 51 sails, 14 threads/inch crimp) merino lamb
65% of this will be turned into a round green space,
The usual finishing (washing, shrinking, first washing, drying, steaming) was carried out.

The knitted fabric had a good angora-like appearance and feel, and its hair-pulling resistance was also better than that of natural angora. The number of fluffs with sharp ends of one thread or more of the threads collected from the knitted fabric was approximately 40 threads/m. I made a sweater and a sweater 1 from this knitted fabric and wore them for a month, but no sagging or frizz occurred at all.

Comparative Example 1 One east end of a polyethylene terephthalate fiber (thickness 0.06 column, length 60 ribs) was immersed in 360 Be' caustic soda solution and treated at 11000 for 30 minutes, and the pond end was sharpened at both ends in the same manner. The fibers were subjected to wool spinning with the following composition to obtain a yarn of number 6.

Both ends sharpened fiber 15% Nylon staple 20% (2.5 denier, 51 sails, 14 threads/inch winding) Merino lamb
65% This was made into a circular knitted fabric and the same processing as in Example 1 was performed.

The knitted fabric (washed and woven - shrunken grade, first washed grade - dry - steamed grade) had an angora-like appearance, but had a tingling sensation on the skin when worn. When a sweater made of this circular knitted fabric was worn for a month, it was found that the fluff at the wrists and elbows had become loose and frizzy. Reference Example 1 The rate of weight loss due to caustic soda was compared between polybutylene terephthalate (PBT) and polyethylene terephthalate (PET).

〔Processing conditions〕

Caustic soda 400 techniques' Aqueous solution treatment temperature 10,000 400,000 single fibers of 20 denier PBT and PET are bundled, the sides are wrapped with paper and cut into 77 pieces, then impregnated with a caustic soda aqueous solution and taken out over time to produce hydrolyzed products. The material was washed with water and removed, and the percentage weight loss relative to the original weight was determined.

Table I: PBT and PET Values and Weight Loss Rates It can be seen that hydrolysis of PBT progresses much more slowly than that of PET.

This gentleness is a factor in forming the advantageous sharpened shape (a tapered part is long) in the double-end sharpened fiber of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of an example of a blended yarn according to the present invention. FIG. 2 is a side sectional view of a knitted fabric using the blended yarn according to the present invention. 1...Fiber with sharpened ends, 2.
...Other fibers. Salmon map 2nd figure

Claims (1)

[Claims] 1 (a) Maximum major diameter part 0.02 to 0.10 mm, length 2
3 to 60% of polybutylene terephthalate fibers having a length of 0 to 150 mm and substantially point-shapely sharpened at both ends;
(b) A blended yarn composed of 40 to 97% of other fibers, with a length of 10 m consisting of (a) on its surface.
A blended yarn in which 5 or more fluffs per meter or more are present or capable of being generated.