JPS6359695B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a polishing tool, particularly a polishing tool useful for polishing leather products such as shoes, bags, furniture, etc. BACKGROUND ART Conventionally, when polishing shoes or the like, polishing tools have generally been made of raised cloth such as cotton sewn into the shape of a glove or piece of cloth, or a sponge. However, these known polishing tools do not have sufficient polishing performance, and especially when it comes to sponges, high gloss cannot be obtained. In addition, cloth polishing tools take time to polish the corners of shoes, and if they get dirty with shoe polish, they will stain your hands and the storage case.If you use cloth polishing tools, you will have to do both hands and cannot support the shoes. There is a problem in using the . In the case of polishing tools made of sponge, due to its elasticity, it is possible to easily polish every corner of objects with non-flat surfaces, such as shoes, with one hand, and this eliminates the above-mentioned problems encountered with cloth tools. However, as mentioned above, this product has a fatal flaw in terms of polishing performance. As a result of extensive research in order to solve these conventional problems, the inventor of the present invention found that the surface of a sponge is made of synthetic resin and processed so as not to substantially impair its elasticity and surface roughness. discovered that the polishing performance of the sponge could be improved to a high level that could never be achieved with conventional polishing tools without losing its usable properties, and thereby completed the present invention. This is what led to this. The polishing tool for polishing leather of the present invention has a sponge portion as the main polishing portion for polishing, and the surface of the sponge portion that contributes to the polishing work substantially follows the unevenness of the surface due to foaming. It is characterized by the fact that the synthetic resin is applied in the form of a thin film in this manner. In the polishing tool of the present invention having such a configuration,
The sponge part, which functions as the main polishing part, maintains its excellent elasticity without substantially losing its elasticity at all, regardless of the adhesion of the synthetic resin. Provides extremely excellent polishing performance. Thus, with the polishing tool of the present invention, shoes and the like can be easily polished with one hand. An extremely high level of polishing effect can be obtained. The leather polishing tool of the present invention only needs to have a sponge part as the main polishing part for polishing, and representative examples of its structure include one made entirely of sponge, and a base member that serves as a grip part during operation. and a sponge fixed thereto, and a combination in which a highly elastic layer of rubber or the like is provided between the base member and the sponge. In the present invention, the sponge constituting the sponge portion may be any of natural sponge, synthetic resin sponge, and rubber sponge, such as polyurethane sponge, vinyl chloride sponge, natural rubber sponge, butyl rubber sponge, chloroprene sponge, Those having a continuous or semi-open cell structure such as soft rubber sponges, polyethylene sponges, neoprene sponges, silicone rubber sponges, and nitrile rubber sponges can be advantageously used, and among these, polyurethane sponges are particularly useful. A synthetic resin can be applied to the surface of the sponge part that contributes to the polishing work, that is, the surface that comes into direct contact with non-abrasive surfaces such as shoes, without substantially impairing the elasticity and surface irregularities of the sponge. is important. If these conditions are not satisfied, the sponge's inherent ease of use characteristics will not only deteriorate or disappear, but also the polishing performance will deteriorate, making it impossible to achieve the initial purpose. For this purpose, in the present invention, a synthetic resin is applied in the form of a thin film to the surface of the sponge portion contributing to the polishing operation so as to substantially follow the surface irregularities. The film thickness is selected from a wide range depending on the type of synthetic resin, etc., but if it is too thick, there is a risk of damaging the elasticity and surface roughness of the sponge.
On the other hand, if it is too thin, there is a risk that the polishing performance will not be sufficiently improved.
In particular, about 0.01 to 0.1 mm is preferable. The synthetic resin may be either a thermosetting resin or a thermoplastic resin, and the thermoplastic resin may include:
Acrylic resin, polyamide resin, polyethylene,
Polypropylene, polystyrene, polyvinyl chloride, cellulose resin, polyvinyl acetate, polyvinylidene chloride, methacrylic resin, polycarbonate, etc., and thermosetting resins include phenolic resin, melamine resin, epoxy resin, polyester resin, alkyd resin. , polyurethane, etc. can be advantageously used. Known methods can be used to apply the synthetic resin to the sponge, such as film fusing means or solution or emulsion application means. If the sponge part is made of polyurethane sponge, use a synthetic resin that has good adhesion to polyurethane and has as good abrasion resistance, bending resistance, puncture resistance, and chemical resistance as possible. That is advantageous. In this case, if a coating method is used, a nearly satisfactory resin film can be formed regardless of the type of resin by applying heat treatment if necessary after coating and drying, but if a film fusing method is used, , polyamide resins, polyethylene, and polyethylene ionomer resins can be advantageously used, and among these, polyamide resins, particularly nylon 6, nylon 11, nylon 6,6, and nylon 6,10, are most advantageous. As a resin coating, preferably 0.005 to 0.5 mm,
In order to obtain a material with a wall thickness of 0.01 to 0.1 mm, the purpose can be easily achieved by using a film with the same thickness when fusing films. On the other hand, when using a coating method, the coating amount is 0.5 to 50 mg/cm ² , preferably 1 to 10 mg/cm ² . As the application method, a dipping method, a brushing method, a spraying method, etc. are employed. The polishing performance of the polishing tool of the present invention is compared with a sponge (Comparative Example 1), a commercially available cloth polishing tool (Comparative Example 2), and a glove-like polishing tool (Comparative Example 3). . [1] Glazing performance test method 2cm to 5cm natural leather (glass-covered leather, black)
Apply 0.1g of commercially available solid type shoe cream evenly to the shoes, and after 30 minutes, polish 10 times (10 times) using each polishing tool.
The glossiness at a specular reflection angle of 45° was measured using the Nippon Denshoku Kogyo Co., Ltd. product. The gloss level of the uncoated natural leather was "5". This is shown in the table as uncoated. [2] Explanation of 1 to 10

【table】 [3] Test results

[Table] As is clear from the above table, Inventions 1 to 10 had much higher polishing performance than Comparative Examples 1 to 3, confirming their superiority. An embodiment of the present invention will be described below based on the drawings. In the polishing tool of the present invention shown in FIG. 1, a sponge part 1 as the main polishing part is fixed to the top surface of a protective cap 2 of a sprayer (not shown), and the protective cap 2 is gripped during polishing work. constitute the department. As is clear from the enlarged cross-sectional view of FIG. 2, a synthetic resin thin film 3 is deposited on the surface of the sponge portion 1 so as to substantially follow the surface irregularities, and this deposited thin film 3 has an extremely thin thickness that does not substantially impair the elasticity of the sponge portion 1. The synthetic resin thin film 3 deposited on the surface of the sponge portion 1 gives the surface of the sponge portion 1 a high level of polishing performance, and together with the elasticity of the sponge portion 1 itself, exhibits a high level of polishing performance. It is possible.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention, and FIG. 1 is a partial vertical sectional view thereof, and FIG. 2 is an enlarged view of the main part of FIG. 1. In the figure, 1...sponge part, 2...protective cap, 3...synthetic resin coating.

Claims (1)

[Scope of Claims] 1. A polishing tool used for polishing leather, which has a sponge portion as the main polishing portion for polishing, and the surface of the sponge portion that contributes to the polishing work:
A polish for polishing leather, characterized in that a synthetic resin is applied in a thin film form to a thickness of 0.005 to 0.5 mm substantially along the uneven surface caused by foaming on the surface. Tools. 2. The leather polishing tool according to claim 1, wherein the synthetic resin is a polyamide resin. 3. Claim 1, characterized in that the sponge portion is made of polyurethane sponge.
A polishing tool for polishing leather as described in Section 1.