JPS61138767A - 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 fiber having a shape similar to that of animal hair.

[Conventional technology]

The pricked hair of natural fur (e.g. mink, marten, etc.) and the pricked hair of natural animal hair (e.g. angora, mohair) mixed with spun yarn all have sharp ends. , the thin roots enhance the appearance and texture.
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 (Japanese Patent Publication No. 49-21259);
A method of tapering thick and thin thread itself (Japanese Patent Application Laid-Open No. 55-4
5824>, a method of tapering one end (Special Publication 1973)
-40195), a method of tapering both ends (Japanese Unexamined Patent Publication No. 54-38922), and artificial animal hair-like synthetic fiber (Japanese Patent Publication No. 52-47053), but in all of these methods, the length of the thick part is unreasonable. They were nothing more than low-grade imitations, such as being insufficient, or having random thick and thin shapes with no reproducibility.

[Problem that the invention seeks to solve]

Natural animal hair has the following characteristics: (1) One end corresponding to the tip of the hair has a taper that gradually becomes thinner, and the tip is punctate to the naked eye.

(2) The maximum diameter part is not limited to one point, but is continuous to some extent and has a length.

(3) The other end, which corresponds to the hair root, is thin.

(1) provides an extremely mild touch with no tingling sensation, and also provides a soft feel in appearance.

(2) increases the taper part and also has a certain length at the maximum diameter part, so that the surface of the fur (stinging hair surface)
It gives a calm, high-class luster and a smooth touch.

(3) gives a smooth ``breeze'' like the rice ears waving in the wind.

When attempting to obtain such animal hair bristles using synthetic fibers, there are problems in the above-mentioned technical regulations, such as the length of the thick part being almost non-existent, and the shape of the thick and thin tapers being completely random and having large variations. (1) , (2), and (3) simultaneously have not been obtained.

The present invention provides animal hair-like thick tapered fibers that solve these problems.

[Means for solving problems]

At least one end of the single fiber made of synthetic fiber has a sharp tip with a cross-sectional area of 1150 or less of the cross-sectional area of the maximum diameter part, and a tapered part with a length of 30 times or more the diameter of the maximum diameter part, And continuous to the tapered part, the cross-sectional area is 80% of the maximum diameter part.
An animal hair-like product in which the above-mentioned part extends over a length of 50 times or more of the maximum diameter, and in addition to the above-mentioned tip, there is one or more narrow part with a cross-sectional area of 80% or less of the maximum diameter part. Thick tapered fiber.

A feature of the present invention is that at least one end of the single fiber has a tapered shape with an extremely sharp tip, and that the large diameter part has a length continuous to the tapered part, and is separated from the maximum diameter part separately from the tapered part. An animal hair-like thick tapered fiber that has one or more thin portions of 80% or less of the maximum diameter portion in any part along the length of the single fiber, and has a shape similar to that of natural animal hair, and has a shape similar to that of natural animal hair. The aim is to realize artificial animal hair that has a soft texture.

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

Although the cross-sectional shape is not particularly limited, circular, multilobal, flattened multilobal, and the like are preferable because they facilitate obtaining a tapered shape with a sharp tip.

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

The length is 5ml1 or more, especially 101I@~10011
ra is preferred. If it is less than 5 mm, it will be difficult to provide a length at the maximum diameter portion, and therefore it will be difficult to obtain a uniform grooved surface gloss in a raised fabric structure.

Moreover, if it exceeds 100 mm, it is not preferable because it causes noticeable sagging.

At least one end of the animal hair-like thick tapered fiber has a sharp tip with a cross-sectional area of 1150 or less of the cross-sectional area of the maximum diameter, and preferably 1/6 or less. 115
If it exceeds 0, the tip of the napped fabric of the napped fabric structure made of the fibers will feel rough, which is undesirable.

The length of the tapered part is preferably 30 times or more, especially 40 times or more, the diameter of the maximum diameter part. If it is less than 30 times, the touch of the tip becomes rough and hard, and the soft and mild touch due to the taper is lost. be exposed.

The portion whose cross-sectional area is 80% or more of the maximum diameter is 5% of the maximum diameter.
It exists over a length of 0 times or more. In particular, 60 times or more is preferable, and if it is less than 50 times, the thick portions become dotted gloss, and in the case of a raised fabric structure, it becomes undesirably dull and low-grade gloss.

Apart from the sharp tip, the thickness, length, and cross-sectional shape of the thinner part, which is 80% or less in cross-sectional area than the maximum diameter part, are not particularly limited, as long as it is thinner than the maximum diameter part.

A method for tapering at least one end of a uAN bundle is disclosed in Japanese Patent Application Laid-Open No. 54-38922. Or special public service 50-40195
The method proposed in was used.

! A method for thinning the other end and/or the center of the 41 fiber can be obtained by treating only the portion of the tapered single fiber that is desired to be thinned in a fiber T4 solution.

The animal hair-like thick and thin tapered fiber of the present invention has the shape shown in Figs. 1 to 3, and satisfies all of the essential requirements of the present invention, such as a sharp tip, a taper length, a maximum diameter portion, and a thin portion. These tapered fibers provide bristles with a mild touch and high-quality luster, achieving a raised structure with excellent appearance and smoothness.
The tapered fibers shown in the figure lack the essential requirements of the present invention; for example, the tapered fibers shown in FIG. 4 exhibit a large difference in touchability, and the tapered fibers shown in FIG. 5 exhibit a large difference in glossiness.

〔Example〕

Example 1 The side surface of a single fiber bundle made of polyethylene terephthalate fiber and having a thickness of 100 d, a circular cross section, and a length of 50111 mm was covered with a polypropylene film.

Remove one end of this bundle from the liquid level of 30% caustic soda.
The specimen was vertically sunk to a depth of 1, subjected to tapering treatment at 100° C. for 30 minutes, and then pulled up.

Next, the polypropylene film was removed and bound with a rubber band to prevent the monotaH from scattering. Next, the other end, which was not tapered, was immersed to a depth of 51 mm 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. Finished single II
The side shape of the A-sleeve is such that the cross-sectional area of the tip, which corresponds to the tip of animal hair, is 1. /100, the taper length is 5 mm (50 times the diameter of the maximum diameter part), and the length of the part where the cross-sectional area is 80% or more of the maximum diameter part is 33II1 m (330 times the diameter of the maximum diameter part), and is thin. The length of the section was approximately 5 am, which was narrower than the maximum diameter.

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 nape fiber structure thus produced was such that the rice ears were twitching in the wind.

Furthermore, the structure was dyed using a paddle dyeing machine at 120°C for 60 minutes.
It was stained with L 1iq (Narrow Disperse Dye manufactured by Hoechst Co., Ltd.).

The surface gloss of the obtained napped fiber structure had uniform surface gloss.

Example 2 The material is polybutylene terephthalate fiber, the thickness of the single fiber is 50 d, the cross-sectional shape is four-lobed flat, and the length is 5 Q mm.
The sides of the fiber bundle were covered with paper. After completely submerging this whole part in a 40% caustic soda solution, it was treated at 105°C for 70 minutes and then taken out.

Next, in the fiber length direction, from a point 30IllIl (center) from the end, a width of 5 mm left and right (total width 1011111>
After completely removing the paper in the circumferential direction, it was treated in the same caustic soda bath for 10 minutes and then taken out.

All remaining paper was then removed, rinsed in a household washing machine for 60 minutes, neutralized with acetic acid, and dried.

The shape of the obtained single fiber has tapers at both ends, the cross-sectional area of the tip is 1/100 or less of the cross-sectional area of the maximum diameter part, and the taper length is at most 7 at each end.
ms (70 times the diameter of the diameter part), the length of the part where the cross-sectional area is 80% or more of the maximum diameter part is 14- (140 times the diameter of the maximum diameter part), and the thickness of the thin part is the same as the maximum diameter part. In 50% of the cases, the length was 12IIIR, which was narrower than the maximum diameter.

The fibers were laminated at a ratio of 20,000/rn' on a fabric made of 65% polyester/35% polyester and a basis weight of 100Q/-, and then laminated thereon using a felt needle FPD-1 type #36 manufactured by Organ Needle Co., Ltd. I punched.

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. Thereafter, the surface was raised to obtain a raised fiber structure.

The napped fiber structure flutters even in the slightest breeze.

It was something. Subsequently, Samaron 31ack [3B L
1iq (disperse dye manufactured by Hoechst Co., Ltd.).

The surface gloss of the resulting napped fiber structure was extremely high-grade, with a natural black mink-like smooth surface gloss.

Example 3 The same thick tapered fiber as in Example 2 was blended with polyacrylonitrile''! JA fiber (2dX701111) at 5% by weight, and the quality was examined. It was something that ``waved'' in the air.

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 the quality was examined. Although the gloss was smooth and surface glossy, the texture that fluttered in the wind was not obtained.

Comparative Example 2 The material is polybutylene terephthalate fiber, the side shape is thick and thin with periodic intervals of 201111, and the thickness of the thick part is 10
A fiber bundle having a thickness of 20 d at the 0 d and m parts, a four-lobed flat cross-sectional shape, and a length of 60 III was tapered in the same manner as in Comparative Example 1.

The obtained single 1lII# shape had tapers at both ends, but the length of the thick part was about 11111, and the shape was random among the single fibers.

A raised 41iIII structure was obtained from the fibers in the same manner as in Example 2.

The quality of the resulting napped product was that although there was sufficient "fluttering" in the wind, the napped surface did not settle down and was of an irritated quality.

(Effects of the Invention) The animal hair-like thick and fine tapered fiber of the present invention has an appearance very similar to that of natural animal hair, and the spun fiI yarn or napped fiber structure made by blending the fiber with the fiber is similar to that of natural animal hair. This is an artificial beast that looks like it is ``fluttering'' in the wind, and that it can be scratched to create a high-quality surface gloss, giving it a soft and mild feel with no tingling sensation in both appearance and touch. I ended up getting hair-stinging hair.

[Brief explanation of the drawing]

Figures 1, 2, and 3 relate to the side shape of a single fiber suitable for, for example, natural fur-like stinging hair or angora rabbit-like stinging hair. Figure 5,
FIG. 6 is a comparative example and does not show undesirable shapes. Patent Applicant Toshi Co., Ltd. Figure 1 Figure 20 'P13 Figure 4 Figure s5th '4 &Figure<:]]==

Claims (1)

[Claims] At least one end of a single fiber made of synthetic fibers has a sharp tip with a cross-sectional area of 1/50 or less of the cross-sectional area of the maximum diameter part and a tapered part with a length of 30 times or more the diameter of the maximum diameter part. continuous to the tapered part, and the cross-sectional area is 80% of the maximum diameter part.
The animal hair-like part has a length of 50 times or more than the maximum diameter, and in addition to the tip, has one or more thinner parts with a cross-sectional area of 80% or less of the maximum diameter part. Thick tapered fiber.