JPS6011119Y2 - leather-like string - Google Patents

Description

[Detailed description of the invention] This invention relates to a leather-like cord that has a texture and appearance similar to natural leather, and has a sense of unity, by having a transported core material and a resin layer with pores created by a wet method. be.

Conventional leather-like strings are made by forming thin strips of synthetic leather into tape-like pieces, bending about 25% of the width, and joining them with adhesive. It is a decorative item, and the joints may peel off due to bending during use or due to changes in humidity, so when using it as a braid, it was necessary to devise measures to prevent the joints on the back side from showing on the surface.

Furthermore, since the synthetic leather is made into strips, there is a limit to the length, and since an adhesive is used, it is difficult to obtain a flexible product.

Furthermore, when making a shape such as an oval shape or a round shape, it was necessary to insert and join a core material of a specific shape when bending.

In order to make strings without such joints, attempts have been made to coat the core material with foamed resin using an extruder using a so-called dry method, but this method has poor adhesion to the core material, making it difficult to obtain a flexible texture, and the surface It was also rough and the knots tended to come undone.

The purpose of this invention is not only to eliminate the above-mentioned drawbacks, but also to create a desired texture and shape by adjusting the structure of natural leather.

To explain the string of this invention based on drawings, the core material 1 is made of synthetic fiber or natural fiber, 9 threads, 9 foamed threads, 9 knitted fabrics, 9 sets, narrow woven fabrics, non-woven fabrics, etc., and the core material 1 is made of nylon, polyurethane, etc. The resin layer 3 is coated with a resin layer 3 having pores 4 formed by a wet method, and a colored resin 5 is applied to the outer peripheral surface of the resin layer 3.

In the wet method, a nylon resin dissolved in a calcium chloride-methanol solution and a polyurethane resin dissolved in DMF are used to dissolve calcium chloride and methanol in water.
After the MF is eluted, the resin layer 3 forms fine pores 4 and is flexible, and its surface is smooth and similar to the grain layer of leather.

In order to obtain this smooth and flexible resin layer 3, in order to remove the air contained in the core material, it is necessary to impregnate and coat the core material with resin and replace it with air. The layer 3 and the resin solutions of the resin layer 3 and the colored resin 5 should be selected to be compatible.

If the core material does not impregnate the resin 2 and the core material and the resin solution of the resin layer 3 lack compatibility, select a resin 2 that has good adhesion to both the resin solution of the resin layer 3 and the core material 1. Should.

Such a leather-like string can be optionally given an enamel-like finish by embossing the surface of the colored resin 5 or by further coating it with a transparent polyurethane resin or the like.

In addition, when the leather-like string is required to have a special shape, it is also possible to apply the colored resin 5 after polishing the resin layer 3 having the pores 4.

As mentioned above, this idea has a resin layer with pores formed by a wet process, so the desired shape can be obtained depending on the shape of the nozzle that discharges the resin, and conventional synthetic leather can be bent into tape-like strips. There are no visible joints, so there is no need to worry about the vertical joints coming out when used as a braid.

Furthermore, by changing the type of thread used for the core material, the string can be made into a firm, flexible leather-like string that can be processed continuously.

Furthermore, unlike strings with a foam layer made using a dry method, the adhesion to the core material is strong, and the resin layer with micropores is flexible and wrinkles similar to natural leather, and is lightweight and has the property of being difficult to untie. There is.

The colored resin layer improves abrasion resistance, and the color makes it a beautiful leather-like string.

Since the leather-like string of the present invention has the excellent effects mentioned above, it is most suitable as a string for belts, shoes, sports bands, clothing, handicrafts, decorations, etc. .

[Brief explanation of the drawing]

The figure is an enlarged sectional view of this invention. 1... Core material made of synthetic fiber or natural fiber,
2... Resin, 3... Resin layer by wet method, 4... Pores, 5... Colored resin.

Claims (1)

[Scope of utility model registration request] A core material 1 made of synthetic fiber or natural fiber is impregnated and coated with a resin 2, and the coated resin layer 3 is further formed with pores 4 by a wet method, and a colored resin 5 is coated on the outer peripheral surface of the resin layer 3. A leather-like string.