JPS6081346A - Leather yarn and its production - 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 novel fur yarn densely covered with natural hair and a method for producing the same.

More specifically, the present invention relates to a novel fur yarn characterized by cutting only the skin part of fur into thin pieces, and a method for producing the same, which is capable of producing woven fabrics, knitted fabrics, and single-bag items containing natural hair. The present invention relates to a fur yarn suitable for.

Fur has traditionally been used for various purposes such as clothing, rugs, decoration, and cushioning. In that case, they are processed into various articles by cutting them into desired shapes and sewing or pasting them together, depending on the purpose.

When cutting fur, use scissors or a knife to cut it into the desired shape, but since fur has dense hair on one side, it is difficult to cut it into 9J lengths or extremely thin pieces. is difficult, and it is also difficult to form a smooth cut.

Furthermore, when cutting fur, it is impossible to cut only one part of the fur in order to completely align the fur that grows densely in the cutting direction and not to cut off the fur in the direction of the aligned fur. It is. When the fur is thinned using a conventional cutting machine, I)
ty+ 4-1 hair at the same time! , Ij would be cut, so it is not possible to mechanically produce fur threads with fine fur.

In addition, it has not been considered to obtain yarn from fur because it is not practical for industrial production to manually turn fur into yarn.

In view of such prior art 1, the present inventor conducted various tests 6 and 6.
As a result of research, by cutting the fur using a laser beam, it was possible to remove the defects such as those mentioned above, and it was possible to make extremely thin threads without shedding the fur.
It was discovered that the obtained thread was useful as a special thread-like material, and the present invention was completed.

In other words, by cutting the fur with a laser beam, you can entrust it to any shape you want with elegance and style. , the IJ opening is in place, and most of the hair around the vJ opening does not fall off. If you can cut the fur finely and uniformly without shedding most of the hair, then you can cut the fur yarn into 11 pieces and cut it into 41 pieces of soft natural hair. Of course, it is possible to manufacture textiles, and it is possible to provide new products that have the power of conventional IEL.

That is, the natural hair or dense hair of the present invention +! ;、?
By weaving knitted fibers that make use of the hair of i, it is possible to produce clothing, blankets, rugs, and bags with completely new textures.

Further, according to the method of the present invention, fur cutting J, '-1t
Since it can be mechanized, uniform products can be produced in large quantities at low cost.

In the method of the present invention, the laser beam used to cut the fur is a monochromatic paper in one tray and a coherence.
It is a 1+z line ray with a 1 + z line, and using a condensing lens or a condensing mirror, it is extremely It is possible to concentrate light energy, and conventionally, optical transmission, ti'?
+v, ¥self-recording, measurement,! , 'J cutting, drilling, etc.) ii) It is used in many ways such as medical treatment lJ)
Ru.

A fur thread is produced by irradiating only the skin part of the fur with such a laser beam. When the hair is exposed to light rays, the hair will curl and damage the product's appearance. Therefore, in order to irradiate only the skin of the fur with the laser beam, the fur is cut with the hair-bearing side facing down. In this case, if the fur is placed directly on the + side of the flat plate-shaped stand, the length of the hair, the unevenness of the angle of the hair, and the elasticity of the hair tufts will cause the skin part on the two sides to Due to the unevenness, it is impossible to completely align the focus of the laser beam with the part of the skin to be cut. Therefore, inconvenient situations occur such that some parts of the skin are not cut or the hair parts are burnt.

In order to solve these problems, the inventor of the tree conducted various tests and found that when cutting fur with a laser beam, the laser beam is focused only on the skin part and the energy is concentrated on the fur side. It has been found that the placed hair can be irradiated with a laser beam focused at a short focal length so that the hair is out of focus and the energy richness is reduced. However, when the depth of focus of the laser beam becomes shallow, the slight height of the object to be cut causes the object to be cut to be out of focus of the laser beam, so it is necessary to maintain the skin part of the fur to be cut in a perfectly flat shape. Is required. For this purpose, the present inventor has devised a new fur retaining device, which has already been disclosed in Utility Model Registration Application No. 70345 of 1981.

In other words, place the fur to be cut into the second part of the fur holding device, with the hair-bearing side facing down. By placing it in place, you can maintain the skin part in a perfectly flat state.

When a laser beam is irradiated from above, the focus of the beam always matches only the desired skin area, where the beam is absorbed and curves to the hot side, and the skin in the irradiated area is evaporated and dissipated. Only the skin part of the fur is cut.

The fur retaining device described in (a) has a right bottom frame body with an edge protruding inward from the two end edges, and (b) is provided within the right bottom frame body, and the tip thereof is approximately connected to the edge. A side plate with a number of buttons in the same horizontal position and with ventilation holes, and (/
\) It consists of a t11 gas device placed inside a frame body described in +iiij.

The present invention will be explained in more detail below with reference to illustrated embodiments.

Figure 1 shows how fur is cut using a conventional cutting machine.
It is a partially enlarged sectional view.

When the blade 2 of the cutting machine is applied to the fur cutter, the irregular hairs 3 of the fur 1 are knocked down from the root, so the hair 3 is not 'A' and the skin part 4 is
It is not possible to cut only the This is the same even if the fur 1 is turned over and the fur 3 is placed on the lower side. Therefore, when one fur l is cut at parts A, B, and C, the fur yarn becomes almost hairless. This trend seems to be true: the thinner the thread, the better.

In the present invention, as shown in FIG.
4 of the suitable retaining device 5, with the side facing down and with the skin portions 4 on the two sides lying substantially flat;
The fur is cut by irradiating only the skin part of the fur with the laser beam 6 by aligning the skin parts on the two sides with the focus position of the laser beam 6.

By doing this, as shown in FIG. 3, it is possible to obtain natural hair or fur yarn 7 without losing much of the hair 3. FIG. 4(A) shows a state in which the fur yarn 7 is roughly twisted, and FIG. 4(B) shows a state in which the fur yarn 7 is twisted in a coarse manner. As shown in FIG. 3, the fur yarn 7 of the present invention has a large t on only one side of the yarn, so when twisted roughly, it is shown in FIG.
As shown in A), when viewed from the side, the hairs are discontinuous, or when this fur yarn is actually used to make textiles, the hairs fill in the gaps and grow densely all over. Become something. In addition, when the fur thread 7 is twisted into a sparrow, No. 411 (
As shown in B), the hair grows all around. In addition, in order to twist and fix the fur thread 7, it is sufficient to moisten the fur thread with water and then dry it.

In order to cut the fur, there are various types of devices that can hold the skin part of the fur at a level of 1 [1].
The invention is further illustrated by the device disclosed in US Pat. No. 0,345.

Figure 5 shows the XY table of a normal laser irradiation device.
- is a side view showing a state in which the fur holding device is placed.

The laser beam irradiation device 11 includes a frame 12, a laser oscillator 13 placed on the top of the frame, a condensing lens device 14 that guides the generated laser beam to an object to be irradiated, and spoils the beam, and an object to be irradiated. Hold the object and move it horizontally so that the laser beam hits the cutting point.
It consists of table 15.

Is there a fur holding device 5 on the XY table 15? i
place Note that the illustrated device includes an intake box 16 as an exhaust device.

FIG. 6 is a perspective view showing the fur holding device L with fur L placed on it with the side with hair facing down, and FIG. 7 is a partial plan view of the fur holding device and FIG. The figure is a partial longitudinal sectional view of the fur retaining device. In addition, in Fig. 7,
The hair on the front side (lower side) of the fur was omitted.

The fur holding device 5 includes a bottomed frame body 18 having an edge 17 projecting inward from the upper edge. and (i) It consists of a plate 21 which is provided within the bottom frame 18, has a large number of buttons 19 whose tips are at approximately the same horizontal position as the edge 17, and has ventilation holes 20 bored therein.

Said edge 17 holds the peripheral edge of the fur l.

Further, the frame body 18 is closed with a bottom plate 22 in order to maintain a negative pressure inside the frame body 18 by means of a suction box, a box 16, or other suitable exhaust device.

The needles 19 implanted in the 31 plate 21 support the fur l from below. When the fur is placed on the fur holding device 5, the needle 19 penetrates into the inside of the fur and directly contacts the skin part of the fur 1 to support the fur 1. Gold 1 plate 21
A large number of ventilation holes 20 are formed between a large number of forceps 19 installed in the holder. This ventilation hole 20 communicates between the second side of the nail plate 21 and the lower side leading to the suction box 16 in order to create negative pressure in the frame body 18 and suction the fur 1.

Further, as shown in FIG. 8, an additional filter sheet 23 is added to the fur holding bag @5. The filter sheet 23 is made of a suitable ventilation material such as a non-woven fabric sheet, a foam sheet, a coarse woven cloth, or a wire mesh, so that the hair waste generated during cutting with the laser beam is sucked into the ventilation holes 20 and the suction hooks 16. It acts as a strainer to collect hair to prevent it from clogging the exhaust system.

The intake box 16 shown in n1j communicates with the do side of the throat plate 21 inside the frame 18 through an appropriate opening (not shown). Further, the intake box 16 is provided with an exhaust D24, and a flexible exhaust pipe 25 is attached to the exhaust port 24, and the tip thereof is connected to a suction fan or the like to perform exhaust. Note that the reference numeral 26 indicates a pressure adjustment 5f for adjusting the degree of negative pressure within the system.

When cutting fur using the fur holding device described above, the fur 1 is placed on the second side of the fur holding device 5 with the skin portion facing up, as shown in FIG. Since the fur 1 is usually not quadrilateral but irregular in shape, there is a space 27 between the fur retaining device 5 and the periphery of the fur, but when the fur retaining device is used, a slight exhaust is performed, so the space 27 is If it is covered with cardboard, a plastic sheet, a corrugated pole, etc., it will be lightly adsorbed along with the fur to the two sides of the fur holding device 5.

Furthermore, the fur is irradiated with a laser beam in the state shown in FIGS. 2 and 5. Various types of laser beams can be used, such as Luhi laser, Nd glass laser, carbon dioxide gas laser, and argon laser, but carbon dioxide laser has an oscillation wavelength in the infrared region, so it cannot be used with non-metallic lasers. It is suitable because it has a high absorption rate by the material and also has a high energy conversion efficiency compared to other types of laser beams. However, it is not limited to this only.

The irradiation conditions of the laser beam differ depending on the type of fur and the thickness of the skin part of the fur, for example, the thickness is 1 to 2 mm.
In case of fur with skin part, rX of 3O-50W
2-3 m/min with WI Kaslaser.

It can be operated at moderate cutting speeds.

Additionally, the fur may be cut in parallel to the ruled lines.
Alternatively, it may be cut into a spiral shape. Since a relatively long thread can be obtained even from a small raw hide by cutting into a spiral shape, it is suitable for obtaining a long thread by splicing the threads together.

Also, the width for cutting fur is approximately 0.3 to 311IID.
degree is suitable. If the fur yarn is too thick, it loses its flexibility, which is inconvenient for weaving or knitting the fur yarn, and it is also undesirable because the woven or knitted product may become stiff or lose its texture.

When fur is cut using the method described above, the skin part of the fur can be cut thinly and smoothly, and the cutting line can be freely and automatically set using the XY table 15, resulting in extremely thin and flexible fur. It is possible to produce yarn.

Furthermore, the fur yarn of the present invention has not existed before, and is expected to be used in various new products in addition to the aforementioned fur yarn woven and knitted fabrics.

[Brief explanation of drawings]

Fig. 1 is a partially enlarged vertical cross-sectional view showing how fur is cut using a conventional cutting machine, Fig. 2 is a partially enlarged longitudinal cross-sectional view showing how fur is cut by the method of the present invention, and Fig. 3 is a partially enlarged longitudinal cross-sectional view showing how fur is cut by the method of the present invention. A side view of the fur yarn of the present invention, FIG. 4(A) is a side view of the same fur yarn twisted slightly, and FIG. 4(B) is a side view of the same fur yarn twisted electrically. Figure 5 shows the X of the laser irradiation device.
A side view showing the state in which the fur holding device is placed on the Y table, Fig. 6 is a perspective view showing the fur holding device placed on the fur holding device, and Fig. 7 is a partial leveling of the fur holding device. figure,
and FIG. 8 is a partial vertical sectional view of the fur retaining device. 1. Fur Hide 3: Hair 4, Leather part 5: Fur holding device 6, Laser beam 7: Fur thread 11, Laser beam irradiation device 16: Intake ponks 17. Rim 18/Bottomed frame 19: 2 O2 ventilation holes 21 2 Plate patent applicant Mitsuko Suwa Agent Patent attorney Hajime Maejima Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 P Figure 6 5

Claims (1)

[Claims] (1) A fur yarn densely covered with natural hair, characterized in that only the skin part of the fur is cut into thin pieces. (2) The fur yarn according to claim 1, wherein only the skin portion of the fur is cut into a width of 0.3 to 3 mm. (39. The fur yarn according to claim 1 of Patent 5, which is obtained by twisting or twisting the fur yarn obtained by cutting only the skin part of fur into thin pieces. (4) Fur yarn of any fur material. Place the fur side down on the stand so that the skin on the second side is essentially flat, and focus the laser beam on the skin on the L side to remove the fur. A method for producing fur yarn, which comprises cutting the fur by irradiating a laser beam only on the skin part. (5) 30 to 50 W (7) Focusing a carbon dioxide laser beam on the skin part of the fur, The method for producing fur yarn according to claim 4, characterized in that the leather portion is cut at vJ at a speed of ~3 m/min.