JP2765429B2 - Leather products and processing methods - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leather product obtained by processing beast leather having large pores, such as pig leather, and a method of processing the same.

[0002]

2. Description of the Related Art Conventionally, leather products such as handbags and shoes mainly use leather of beasts, but some leather products use fresh leather. In leather products using such raw leather, the surface of the raw leather is painted with wooden lacquer or synthetic lacquer.

[0003]

However, a leather product obtained by applying wood lacquer to raw leather has a problem of causing lacquer rash caused by the wood lacquer. Further, there is no conventional leather product in which raw lacquer is coated with wood lacquer or synthetic lacquer, which is as transparent as glass products. Furthermore, conventional leather products in which wood lacquer or synthetic lacquer is applied to raw leather are hard and cannot be folded, so they cannot be used for products that have a folded part such as a handbag lid, for example. There is also a problem that is limited.

[0004] The present invention has been made based on the above circumstances, and an object of the present invention is to provide a leather product which is free from lacquer rash and has a sense of transparency and a method for processing the same.

Another object of the present invention is to provide a leather product which can be folded even after being colored, and a method for processing the same, in addition to the above objects.

[0006]

A leather product according to the present invention for attaining the above object comprises a raw leather of a pig or a raw leather of a beast having pores of substantially the same size as the raw leather of the pig. Is coated with an alcohol dye, and urethane or a lacquer is coated thereon. Desirably, the virgin leather is soft virgin leather or hard virgin leather.

[0007]

According to the present invention, an alcohol dye is applied to at least one of the front surface and the back surface of pig leather or beast leather having pores of substantially the same size as the pig leather. By applying, the dye penetrates the pores and fibrous tissue of the virgin leather, and after the dye is further dried, by applying urethane or lacquer thereon, the urethane or lacquer also penetrates the pores or the fibrous tissue. I do. The leather product thus obtained is less likely to fade and has a transparency similar to that of glass. Further, by applying urethane or lacquer, the occurrence of mold can be prevented. In addition, the soft leather obtained by applying an alcohol dye or urethane to the soft leather using the soft leather can be easily folded or shaped even after coloring.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic enlarged sectional view of a leather product according to one embodiment of the present invention. The leather product of this embodiment shown in FIG. 1 is obtained by applying a dye to a pig leather 1 having a gin surface 2 and further applying urethane thereon. Pig raw leather 1 called pigskin is so thick that it is called bristle, and it has long and deep roots. Therefore, the pores 3 are larger than those of other beasts, and have good air permeability. For this reason, the applied dye not only adheres to the surface and penetrates into the fiber tissue 4 but also penetrates well into the pores 3. The reason for limiting to beast leather with large pores is that in the case of beast leather with small pores (for example, cow leather), the applied dye does not penetrate into the pores and may be peeled off. In addition, by using the gin-faced genuine leather 1, not only the surface becomes glossier but also more durable as compared with a gin-faced genuine leather.

An alcohol dye is used as a color or patterning dye. Dyes that can be used for leather dyeing include basic dyes and acid dyes in addition to alcohol dyes, but these dyes are inferior in dyeing. In this embodiment, methanol alcohol is used as a solvent for the dye. still,
A slightly soluble pigment may be used in place of the alcohol dye. In this case, the concentration of the pigment needs to be about three times that of a commercially available pigment. This is because the pigment particles are large, and if the concentration is too high, the pigment does not penetrate into the pores 3.

As the urethane used for the finishing agent, those commercially available as flooring agents for floors and the like are used. Lacquer may be used instead of urethane. By using urethane or lacquer, transparency can be increased.

Next, a method of processing the above leather product will be described. First, a method for producing a leather product using hard virgin leather will be described. First, the raw leather before tanning is made by removing the hair from the salted pigskin that will be the raw hide. In this method, a salted pigskin is soaked in sodium sulfide for about 3 days for hair removal, and then washed with water to remove hair. Next, using a sword or the like, unnecessary pieces of meat, fat, and the like are thoroughly removed. Thereby, pores are clearly exposed on the surface of the raw leather. Next, after soaking in a preservative such as oxyflu,
Air dry for 0 days. Raw leather is vulnerable to the generation of bacteria and erosion of insects, so it is necessary to sufficiently add a preservative. The raw leather produced by the above operation has a transparent feeling and is completely dried. Such a hard leather is suitable as a material for accessories such as broaches.

Next, the molding and coloring of the hard virgin leather produced as described above will be described. Select raw leather suitable for the final product in advance. For example, if a brooch is made using hard genuine leather, a genuine leather having a thickness of about 0.5 mm to 1.5 mm is selected. Raw leather of this thickness has high transparency and is easy to process such as molding and cutting. Before the modeling work, the raw leather is moistened with lukewarm water to make it easier to shape and color. Then, according to the creator's preference, the soft raw leather is cut into a desired shape. Next, the cut raw leather is shaped according to the image to give a three-dimensional effect. That is, a work that takes advantage of the characteristics of the genuine leather, such as stretching, inflating, pinching, or folding from a single sheet like paper, is performed.

When finished in a desired form, the above-mentioned alcohol dye or a slightly dissolved pigment is applied and air-dried. When drying, do it in a shade-free, dust-free place.
The part coated with the alcohol dye becomes transparent, and the part coated with the pigment becomes less transparent, but the pores become visible.

Finally, after the dyes and pigments have completely dried, a binder is applied as a primer to apply a finish. After this is dried, urethane or lacquer as a finishing agent is applied to finish. By applying urethane, the surface becomes glossy, and by applying lacquer, the surface becomes matte and becomes like frosted glass.

Next, a method for producing a leather product using soft virgin leather will be described. In order to make a soft leather, the hard leather produced by the above-mentioned operation is further immersed in a dihydric or trihydric alcohol (a system used for lipstick or the like) and then dried. As a result, soft leather is obtained. Such soft leather is suitable as a material for handbags and the like.

Next, the shaping and coloring of the soft leather produced as described above will be described. Select raw leather suitable for the final product in advance. For example, if a handbag is made using soft genuine leather, a genuine leather having a thickness of about 0.7 mm to 1.0 mm is selected. Raw leather of this thickness has high transparency and is easy to process such as molding and cutting. Also,
Generally, a leather product using soft genuine leather has a complicated shape. Therefore, when processing soft genuine leather, a coloring operation is first performed. That is, as described above, an alcohol dye or a slightly soluble pigment is applied and air-dried. When drying, do it in a shade-free, dust-free place. The part coated with the alcohol dye becomes transparent, and the part coated with the pigment becomes less transparent, but the pores become visible.

After the coloring operation, the soft leather is cut according to the pattern of a handbag or the like according to the creator's preference. Next, the cut green leather is coated with a binder as a base material in order to apply a finish when flat. After this has dried, apply a urethane or lacquer finish. By applying urethane, the surface becomes glossy, and by applying lacquer, the surface becomes matte and becomes like frosted glass. Next, the finished leather is shaped according to the image to give a three-dimensional effect. That is, a work that takes advantage of the characteristics of the genuine leather, such as stretching, inflating, pinching, or folding from a single sheet like paper, is performed. Hard raw leather is required to be soft because it is as hard as a nail, but soft raw leather is not necessary because it is soft. Also,
When soft leather is immersed in lukewarm water, the surface becomes uneven. Therefore, in the case of soft leather, it is not usually soaked in lukewarm water.

The leather product using the soft leather produced as described above is different from the leather product using the conventional leather, not only after the dye is applied but also after the urethane is applied.
It can be easily bent and becomes flexible. Therefore, if a handbag or the like is manufactured using the soft leather of this embodiment, the lid of the handbag can be easily opened and closed.

According to the above-described embodiment, it is possible to obtain a feeling of transparency close to that of glasswork, and to use not only dyes and pigments but also urethane or lacquer by using pig raw leather having large pores. Because it penetrates well, fading is less likely to occur. In addition, because the dyes and pigments penetrate the pores, the pores themselves become patterns, and because the pores are spread over the entire surface of the leather, light is irregularly reflected by the dyes and pigments in the pores, giving a texture that has never been seen before Become like In addition, by applying urethane or lacquer, the generation of mold can be prevented. In addition, in the case of this embodiment, since wood lacquer is not used, lacquer rash does not occur.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the invention. For example, in the above-described embodiment, when producing a leather product using hard virgin leather, a method of dyeing after cutting was shown, but in the case of mass production, it is also possible to dye in advance and dye. Good.

Further, the present invention is not limited to the broach and handbag described above, but can be applied to other leather products, such as ornaments such as eyeglass cases and pen stands, or clothes.

Furthermore, in the above-described embodiment, the case of using pig leather has been described. However, the present invention is not limited to this, and boar leather, which is a beast with large pores like pig, is used. May be used.

[0023]

As described above, according to the present invention, an alcohol dye or the like is applied to pig virgin leather or animal virgin leather having pores of substantially the same size as the pig virgin leather. To provide a leather product having a unique texture, which can prevent the occurrence of mold by applying urethane or lacquer on the surface, has no lacquer rash, and has a transparent feeling not found in conventional products. Can be.

Further, according to the present invention, an alcohol dye or the like is coated thereon using soft leather, and urethane or lacquer is further coated thereon. Unlike this, it is possible to provide a highly flexible leather product which can be easily folded even after coloring, and a processing method thereof.

[Brief description of the drawings]

FIG. 1 is a schematic enlarged sectional view of a leather product according to a first embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Raw leather 2 Gin surface 3 Pores 4 Fiber organization

Claims (8)

(57) [Claims] 1. An alcohol dye is applied to the surface of pig leather or animal leather having pores of substantially the same size as the pig leather, and urethane or lacquer is applied thereon. And leather products. 2. The leather product according to claim 1, wherein said virgin leather is soft virgin leather or hard virgin leather. 3. The leather product according to claim 1, wherein a thin-dissolved pigment is applied instead of or together with the alcohol dye. 4. The leather product according to claim 1, wherein the virgin leather has been formed. 5. An alcohol dye is applied to the surface of pig leather or animal leather having pores of substantially the same size as the pig leather, and after the dye is dried, urethane or lacquer is applied. A method for processing leather products, characterized by being dried. 6. The method for processing a leather product according to claim 5, wherein the virgin leather is soft virgin leather or hard virgin leather. 7. The method for processing leather goods according to claim 5, wherein a thin-dissolved pigment is applied instead of or together with the alcohol dye. 8. The leather product according to claim 5, wherein the raw leather has been softened with lukewarm water and shaped.