JPH07207607A - Elastic block - Google Patents

Abstract

PURPOSE:To inexpensively prepare elastic blocks with grained patterns without use of pigments, by combining rubber chips composed of solids, sponge rubber, etc., acryl resin chips, and a binder. CONSTITUTION:A composite material constituted of rubber chips 10 composed of solids, sponge rubber, etc., acrylresin chips 20 and a binder 30 is molded to produce elastic blocks. In this time, the elastic blocks having grained patterns with different appearances, suitable for various uses can be inexpensively produced without use of pigments, by changing the kind and composite ratio of the rubber chips 10 and the acrylresin chips 20. Industrial waste material like weather-strips can be used and hence, the blocks contribute to emvironmental safeguards.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pavement elastic block.

[0002]

2. Description of the Related Art Heretofore, an elastic pavement block has been used as a base material obtained by molding a compound of a hard rubber made of natural rubber or synthetic rubber, an inorganic pigment such as iron oxide and a binder.

However, since the above-mentioned conventional elastic block is mixed with a pigment, there is a problem that the cost is high and it is monochromatic or bicolor, and lacks in designability.

[0004]

The problems to be solved are that the above-mentioned conventional elastic block is expensive because it contains a pigment, and it is monochromatic or bicolor, and lacks in designability.

[0005]

A means for solving the problems will be described with reference to the drawings. The present invention includes a rubber chip 10 made of solid or sponge rubber, an acrylic resin chip 20 and a binder 3.
An elastic block formed by molding a compound of 0.

[0006]

EXAMPLES Examples will be described. 10 is a rubber chip made of solid or sponge rubber, 20 is an acrylic resin chip, and 30 is a binder. More specifically, the rubber chip 10 is made of synthetic rubber such as natural rubber, styrene-butadiene rubber, butadiene rubber, chloroprene rubber, ethylene propylene rubber, etc., and has a chip mesh of 5 mm or less and a binder 3
Fine powders less than 1 mm are removed to avoid accommodating 0 weight gain. The acrylic resin chip 20 preferably has a chip mesh of 3 mm or less, and for the same reason as the rubber chip 10, fine powder of 1 mm or less is removed. The binder 30 is not particularly limited as long as it can be generally used as a binder for the rubber chip 10 such as urethane type and liquid polybutadiene type. The addition of curing catalyst is also not limited.

Table 1 shows a formulation example.

[0008]

[Table 1]

The compounding amount of the acrylic resin chip 20 is preferably equal to or less than that of the rubber chip 10. This is because when the compounding amount of the acrylic resin chip 20 exceeds that of the rubber chip 10, the molding time increases and the strength of the obtained elastic block decreases.

As a molding method, either a curing method by room temperature curing or a thermoforming method by a mold can be used. However, in the case of thermoforming, the forming temperature is desirably 140 ° C. at the maximum. This is because if the molding temperature is higher than that, the acrylic resin chip 20 melts and the mold is contaminated.

To explain the operation, when the above compounding agent was thermoformed in a mold at 125 ° C. for 10 minutes, an inexpensive stone-grained elastic block was obtained without using a pigment.

[0012]

Since the present invention is constructed as described above,
By changing the type and mixing ratio of the rubber chip 10 and the acrylic resin chip 20 without using a pigment, it is possible to inexpensively manufacture an elastic block having a different stone appearance and having a different appearance, which is suitable for the application. In addition, industrial waste such as weather strips can be used, and it can contribute to environmental conservation as a recycled product.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 10 Rubber chip 20 Acrylic resin chip 30 Binder

Claims (1)

[Claims] 1. An elastic block formed by molding a compound comprising a rubber chip made of solid or sponge rubber, an acrylic resin chip and a binder.