JPS61138766A - Animal hair like profile taper fiber - 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 (Field of Industrial Application) The present invention relates to a thick tapered cloth that has a luster and touch similar to that of animal hair.

[Conventional technology]

Stinging hair such as natural fur (e.g. mink, marten, etc.) and natural animal hair (e.g. angora, mohair, etc.) that is blended with spun yarn all have sharp edges at the tips and The fact that it is thin and enhances the appearance and texture is that
Although it is well known, it is inferior in terms of durability and weather resistance.

Many attempts have been made to obtain natural animal hair-like hair using synthetic fibers, but none of these methods have been able to achieve the appearance and texture of natural animal hair. Ta.

For example, a method of treating the tips and roots of the raised flocks on the base fabric with a fiber-dissolving agent (Special Publication No. 4-21259 of 1989);
Method for tapering thick and thin thread itself
45824), a method of tapering one end (Japanese Patent Publication No. 50-40195), a method of tapering both ends (
Japanese Patent Publication No. 54-38922) and artificial animal hair-like synthetic fibers (Japanese Patent Publication No. 52-47053) have been proposed, but in both cases, the length of the thick part is very short.
The degree of orientation and crystallinity of the thick part was low, making it difficult to obtain straight hairs, and the shape of the thick and thin parts was random and not reproducible, making it nothing more than a low-grade imitation.

[Problem that the invention seeks to solve]

The present invention provides animal hair-like thick tapered fibers that have an extremely mild touch with no tingling sensation, a soft feel in appearance, and an extremely calm and high-grade luster. It is.

In particular, the artificial fur using the tapered fibers of the present invention provides a smooth ``°°'' breeze, similar to the way rice ears are waving in the wind.

[Means for solving problems]

At least one end of a single fiber made of synthetic W<H has an extremely sharp tip and a tapered part, and in addition to the tip, there is at least one part of the single fiber that is thinner than the maximum diameter part. It is a fiber, and the thickness of the thin part is
An animal hair-like thick tapered fiber, characterized in that the maximum diameter part has a cross-sectional area of 60 to 10%, the length is 5 mm or more, and the maximum diameter part forms a flat part.

The synthetic fibers of the present invention include polyamide, polyacrylonitrile, polyethylene terephthalate, polybutylene terephthalate, polymethylene terephthalate, etc.
Preferred are polyester fibers that are easily hydrolyzed with caustic soda and modified fibers thereof.

The cross-sectional shape of the raw material fiber is not particularly limited, but it is preferably circular, multilobed, flattened confectionery, or the like, since it is easy to obtain a tapered shape with a sharp tip.

The thickness of untreated single fibers is 5 d or more, especially 10 d to 20 d.
A value of 0 d is preferable, and if it is less than 5 d, the taper presence is poor, and if it is 200 d or more, a prickly feeling is produced, which is not preferable.

The shape of the tapered fiber is 5ffiI11 or more,
Particularly preferred is 10 me to 100 m+-. If the length is less than 5++ m, it will be difficult to have a long length in the thin part, and therefore it will be difficult to obtain bristle with good bristles.

Moreover, if it exceeds 100111, the wear will become noticeable, which is not preferable.

In the animal hair-like thick and thin tapered swath of the present invention, the ratio of the thickness of the thick part to the thickness of the thin part is an important point in obtaining "breeze" when it is made into a raised structure, for example.

In other words, the thin part is 60-10% of the cross-sectional area of the largest diameter part.
A thickness of 50 to 20% is particularly suitable. If it exceeds 60%, a good "moisture" cannot be obtained, and if it falls below 10%, sagging will occur.

Here, "breeze" means that when the fibers are in a straight state and a slight breeze from a household fan is applied to the raised fibers from a distance of 111 degrees, the breeze will flow in the direction of the wind, but when the wind is stopped, it will return to its original state. This refers to the state in which the fibers return back, and in contrast, the state in which the single fibers cannot stand upright on their own and bends (has a bending point), giving a flat feeling, is called Betari.

The length of the thin portion is also important, and should be selected depending on the purpose and use, but the length is preferably 5 mm or more, particularly preferably 10111 or more to 1001 II. 5mm
If it is less than 100%, for example, in spinning, sufficient entanglement cannot be obtained, causing cotton to fall, and in flocking, since the thin part is short, most of it will be buried in the base material, and sufficient winding will not be achieved. Moreover, if it exceeds 100u+, the thin part becomes too long and tends to wear out, which is not preferable.

The cross-sectional shape of the tapered fiber is not particularly limited, and may have a thick portion and a similar shape, a thick portion and a thin portion of an irregular shape, etc., as long as the area ratio of the thick portion and the thin portion is satisfied.

As a method for tapering at least one end of the fiber,
For example, JP-A No. 54-38922, or JP-A No. 5
The method proposed in No. 0-40195 is used.

The method of thinning the other end and/or the center of the single fiber is as follows:
Apply 411I only to the part of the tapered single fiber that you want to make thinner! 1q is obtained by treatment in a lysate.

Another feature of the tapered fiber of the present invention is that the maximum diameter part is not a single point, but has a flat part with a certain length.

Such a shape can be easily formed by a method that does not allow the portion corresponding to the flat portion to come into contact with the fiber dissolving solution. In particular, when the length of this flat portion is approximately 10 times, preferably 50 times or more, the diameter of the largest diameter portion, it has a favorable effect on gloss and touch.

This shape can be explained using schematic diagrams as shown in FIGS. 1 and 2. Fig. 1 shows a case where the single fiber has a sharp end at both ends and a thin part 1 in the middle, and Fig. 2 shows a case where a single fiber has a sharp end at one end and a thin part 1 in the middle.
In the case of an asymmetrical shape where the other end is the thin part 1,
In all of these, the maximum diameter part 2 is flat, and the third to fourth
It is different from the conventional fiber shown in the figure. That is, in FIGS. 3 and 4, the maximum diameter part is dotted, and these fibers are inferior in terms of gloss compared to those in FIGS. 1 and 2.

〔Example〕

Example 1 The side surface of a 111 fiber bundle made of polyethylene terephthalate fibers, each having a single fiber thickness of 100 d, a circular cross-sectional shape, and a length of 5 Qmn+ was covered with a polypropylene film. Place one end of this bundle from the liquid level of 30% caustic soda.
It was vertically sunk to a depth of 51111, treated at 100° C. for 30 minutes, and then raised. Next, the polypropylene film was removed and the central portion was tied with a rubber band to prevent the single fibers from scattering. Next, the other untreated end was immersed to a depth of 51 from the surface of caustic soda at the same concentration and temperature, treated for 5 minutes, and then pulled out. Next, the entire bundle was thoroughly rubbed by hand, washed with water, neutralized with acetic acid, and dried. The side profile of the resulting single fiber is that the tip that is first dipped, which corresponds to the tip of the gift hair, is extremely sharp, and has a taper, and the thin portion, which is the opposite of the #R tip, has a cross-sectional area. It is 50% of the cross-sectional area of the maximum diameter part, and the length is 5
ms, and the cross-sectional shape was circular.

The thin part of the entire thick tapered fiber bundle thus produced was stuck onto the surface of the polyester fabric coated with polyurethane, dried at 100°C for 30 minutes, and then cured at 140°C for 5 minutes.

The nap of the thus obtained napped fiber structure was shiny and had excellent breeze resistance.

Example 2 The sides of a bundle of single fibers made of polybutylene terephthalate fibers, each having a thickness of 50 d, a four-lobed flat cross-sectional shape, and a length of 601 m were covered with paper. The entire bundle was completely submerged in a 40% caustic soda solution, treated at 105°C for 70 minutes, and then taken out.

Next, 30 tall (
The paper was completely removed in the circumferential direction from the point (center) on the left and right sides with a width of 5 mm (total [10 mm)].
It was processed for a minute and then taken out.

Next, all remaining paper was removed, rinsed with household method Hvs for 60 minutes, neutralized with acetic acid, and dried.

The shape of the obtained single fiber has a sharp taper at both ends, the fineness of the thin part is 121 m, the cross-sectional area is 30% of the cross-sectional area of the maximum diameter part, and the cross-sectional shape is It was similar in shape to the part.

The fibers were laminated at a ratio of 2000 G/- on a fabric of 65% polyester/35% cotton, basis weight 100C]/m2, and felt needles FP manufactured by Organ Needle Co., Ltd. were layered on top of the fabric.
Punching was performed using D-1 type #36.

Next, the back side is backed with polyurethane resin and heated to 100°C.
After drying for 30 minutes at 140° C., it was cured for 5 minutes. After that, the surface is raised to form a raised fiber structure.

This raised structure had a luxurious feel with an excellent touch and gloss.

Example 3 The same thick and thin tapered fiber as in Example 2 was blended with polyacrylonitrile fiber (2Qx70+n+) at 5 times i%,
I saw decency. The appearance was extremely similar to that of Angora rabbit hair, and it had excellent rustling properties.

Comparative Example 1 A single fiber bundle similar to Example 2 was completely submerged in a 40% caustic soda solution, treated at 105°C for 70 minutes, and taken out.
After removing all the paper and rinsing it in a domestic washing machine for 60 minutes, it was neutralized with acetic acid and dried. The shape of the obtained single fiber was tapered at both ends.

A napped fiber structure was obtained from the fibers in the same manner as in Example 2, and when the quality was examined, no feel was obtained that swayed in the wind.

Comparative Example 2 The material is polybutylene terephthalate fiber, the body shape is thick and thin, and the thickness of the thick part is 1 at intervals of 2011111 cycles.
006. A fiber bundle having a thin portion having a thickness of 20 d1, a four-lobed flat cross-sectional shape, and a length of 60 I1 m was tapered in the same manner as in Comparative Example 1.

Although the obtained single fiber shape had tapers at both ends, the thick part had no length at all, and the shape was random among the single fibers ta.

A napped fiber structure was obtained from the fibers in the same manner as in Example 2.

The quality of the obtained napped product was that although it had sufficient breeze resistance, the thick and thin shape was random, so the presence of tapered fibers was small, the touch was poor, and the quality was also poor.

(Effects of the Invention) The animal hair-like thick and thin tapered fiber of the present invention, the spun yarn or the napped fiber structure made by blending the m miscellaneous fibers, has excellent wind resistance and does not have a prickly feeling in appearance or touch. It has the characteristic of obtaining artificial animal hair that gives a soft and mild feel.

[Brief Description of the Drawings] Figures 1 and 2 are examples of the side shape of the tapered fiber of the present invention, and Figures 3 and 4 are examples of the shape of the conventional tapered fiber. It is. In the diagram

Claims (1)

[Claims] A single fiber made of synthetic fibers, which has an extremely sharp tip and a tapered part at at least one end, and in addition to the tip, there is at least one part of the single fiber that is thinner than the maximum diameter part. The animal hair is characterized in that the thickness of the thin part is 60 to 10% of the cross-sectional area of the maximum diameter part, the length is 5 mm or more, and the maximum diameter part forms a flat part. Like thick tapered fiber.