JPS6159122B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a watch band made of natural leather used for a wristwatch.

As is well known, when producing natural leather, the raw hide prepared through preparatory work is tanned and then subjected to finishing works such as dyeing and greasing. However, in extremely rare cases, if a natural leather watch band manufactured in this way is worn on the wrist and used for a long period of time,
A rash may occur on the skin. As a result of repeated research by the inventors of the present invention regarding the causes of this "rash", it has been found that the following various factors are involved in the occurrence of "rash".

That is, in the tanning process of raw hides, chromium compound tanning agents are often used, and as synthetic tanning agents, deleterious substances such as sulfonic acid derivatives and formaldehyde derivatives such as phenol, cresol, or naphthol are used. Deleterious substances such as sulfuric acid, hydrochloric acid, and formic acid are used as pickles. Also, during chrome tanning, deleterious substances such as formic acid and oxalic acid are often generated. On the other hand, harmful substances such as formaldehyde and various alkalis are also used in the finishing process. Deleterious substances such as these chromium compounds usually remain in small amounts in natural leather watch bands, and dyes used in the dyeing process also remain in natural leather watch bands. If you use a watch band like this,
Deleterious substances such as the chromium compounds and dyes leached out directly from the band surface, or dissolved and leached out by sweat generated from the skin, irritating the skin and contributing to rashes. . Furthermore, in the finishing process, animal and vegetable oils are often used to fatten the product, and in this case, a considerable amount of animal and vegetable oils remains on the surface and inside of the watch band. , fats and oils are broken down by sweat and heat from the skin, producing lipolysis products.
As a result, it is easy to create an environment suitable for the growth of bacteria on the surface and inside of the watch band, and since natural leather itself is porous, sweat and oil from the skin remain attached to it, making it suitable for the growth of bacteria. It is easy to create a good atmosphere. As a result, bacteria such as mold can multiply, and their toxins can cause a rash or cause the rash to fester.

Based on the above-mentioned findings, the inventors of the present invention came up with a watch band that is free from the risk of causing a "rash." That is, the first invention of the present application provides a watch band that prevents the occurrence of rash by forming a film of a fluororesin compound on the surface of natural leather, and the second invention is made by dispersing a disinfectant that is harmless to the human body in the film of the fluororesin compound mentioned above.
It is even more effective in preventing rashes.

This invention will be specifically explained below.

The watch band of the first invention is one in which a film of a fluororesin compound is formed on the surface of natural leather, which is the material of the watch band, as described above. The natural leather on which the fluororesin compound film is formed has been previously subjected to "tanning", dyeing, finishing, etc. The specific means for forming the fluororesin compound film is arbitrary, but the usual method is to dissolve the fluororesin compound in a solvent, apply it to the natural leather of the watch band material, and then evaporate the solvent. A film is formed by Examples of this solvent include chlorinated organic solvents such as 1.1.1 trichloroethane (containing 5% n-butyl acetate), trichlorethylene, perchlorethylene, or fluorinated solvents such as F-11, F-
113 etc. can be used.

In this way, the film of the fluororesin compound is formed on the fibers on the surface of the natural leather used as the watch band material, so it is firmly attached to the surface of the natural leather.
There is no peeling. This fluororesin compound film has high water and oil repellency, so it prevents sweat and oil generated from the human body from adhering to the band surface, and at the same time, it prevents the sweat and oil generated from the human body from adhering to and remaining on the band surface. The generation of decomposition products of fats and oils is prevented, and as a result, the generation of an environment suitable for the propagation of various bacteria is prevented. Furthermore, since the fluororesin compound itself has some bactericidal properties, it is possible to suppress the propagation of various germs.
In addition, the presence of a fluororesin compound film prevents the surface of natural leather from coming into direct contact with the skin, which prevents harmful substances such as chromium compounds remaining in the tanning process and formalin used in the finishing process. The residues and dyes do not come into direct contact with the skin, and therefore the skin is not irritated by these harmful substances and dyes.

On the other hand, the watch band of the second invention is similar to the watch band of the first invention described above.
A disinfectant that is harmless to the human body is dispersed and mixed in the film of the fluororesin compound according to the invention. The disinfectant may be one that is as harmless to the human body as it is dispersed in food packaging materials, such as plastic film for food packaging, such as 2-(4-thiazolyl)-benzate. imidazole i.e. thiabendazole or
A fungicide abbreviated as TBZ, N-(fluorodichloro-methylthio)-phthalimide, a fungicide commercially available under the trade name Preventol A3, and N-dimethyl-N'-phenyl-N'-(fluorodichloro-methylthio)-phthalimide, Methylthio)-sulfamide, a fungicide commercially available under the trade name Priventol A4, or O-phenylphenol, chlorhexidine, Vantosil IB
(Vantocil IB), Proxel, etc. can be used. All of these prevent the growth of bacteria such as mold.

In order to disperse such a disinfectant into a film of a fluororesin compound, at the stage where the fluororesin compound is dissolved in the above-mentioned solvent, the disinfectant is uniformly added and mixed into this solution. It can be applied to the natural leather of the watch band. In addition, when using the above-mentioned bactericide, the amount of the bactericide may be about 0.1 to 0.5% based on the fluororesin compound.

By forming a film of a fluororesin compound in which a sterilizing agent is dispersed in this way, the growth of sterilizing bacteria such as mold on the surface and inside of the band is prevented.

As is clear from the above explanation, the watch band of the present invention is made of a natural leather band material with a film of fluorine resin compound formed on the surface of the band material. This prevents the creation of an environment suitable for the growth of bacteria such as mold, and also prevents harmful substances and dyes remaining on the band material from directly irritating the skin, thereby reducing the risk of rashes. occurrence is effectively prevented. In addition, especially in the second aspect of the present invention, since a bactericide is dispersed in the film of the fluororesin compound, the growth of various bacteria such as mold is inhibited even if they adhere to the film. ``You can get the effect of prevention.

Claims (1)

[Scope of Claims] 1. A watch band characterized in that a film of a fluororesin compound is formed on the surface of a band material of natural leather. 2. A watch band characterized by forming a film of a fluororesin compound in which a disinfectant is dispersed on the surface of the band's natural leather.