JP2525139Y2 - Elastic subgrade mat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a subgrade mat used for roads and floors of sports facilities, leisure facilities, parks and the like.

[Conventional technology] In the case of sports facilities and parks, especially on the floor,
Improvements in walking sensation, color sensation and the like are required. Because of this,
The subgrade material at those locations has a low hardness and has a certain thickness to provide elasticity and needs to be colored.

Conventionally, general roadbed materials that have been used have been integrally molded to a size of 20 to 50 mm in thickness with a maximum length of several tens of cm and a thickness of 20 to 50 mm using elastic materials. Many are laid continuously on the floor or road.

[Problems to be solved by the invention] Conventional subgrade materials used for subgrades such as sports facilities
Although the whole is integrally formed of the same material, the required characteristics of the subgrade material differ between the upper layer portion and the lower layer portion, and the conventional subgrade material cannot satisfy all of the various characteristics. In other words, the upper layer of the roadbed material is non-slip,
Elasticity is required, and the lower part is required to have elasticity, stability and economy. For this reason, if the whole is made only of the material that satisfies the characteristics of the upper layer, economy and stability will be lacking.On the contrary, if it is made only of the material that satisfies the characteristics of the lower layer, wear resistance and color will be lacking Become.

Even if a material that satisfies the characteristics of the upper layer and a material that satisfies the characteristics of the lower layer are simply bonded with an adhesive to make the roadbed material, they will still be bonded due to temperature changes, sunlight, rain, soil, etc. The part is easily peeled off and has not been implemented.

Therefore, an object of the present invention is to provide the characteristics of the upper layer portion and the characteristics of the lower layer portion as a roadbed material, and to provide the roadbed material with durability.

Means for Solving the Problems The present invention achieves the above object and is an elastic subgrade mat including a thick elastic material in a lower layer and a thin elastic material in an upper layer. The thin elastic material is created by laminating a viscous rubber material containing a cross-linking agent and a colorant unreacted on a vulcanized thick elastic material and vulcanizing it under pressure to make it elastic. At the same time, the thin elastic material is bonded to the thick elastic material.

[Operation] In the above-mentioned elastic subgrade mat, various characteristics are provided by giving the thin elastic material of the upper layer a non-slip or color, and giving the thick elastic material of the lower layer elasticity and economy, etc. You can have everything. Further, since the thin elastic material is bonded to the thick elastic material which has already been vulcanized and solidified at the time of the reaction of being elasticized by heating under pressure from the unvulcanized fluid state, The bonding state is strong, and the two are hardly peeled off.

Embodiment An embodiment of the present invention will be described with reference to FIGS.

The elastic subgrade mat 1 is a mat to be laid or adhered to a road or floor such as a sports facility or a park.
The thin elastic member 2 in the upper layer and the thick elastic member 3 in the lower layer having different characteristics are firmly bonded to each other.

The elastic subfloor mat 1 of this embodiment has a square plane and a thickness of 20 to 50 mm, but may have a thick I-shape or polygon in order to continuously arrange it on a floor or the like.

The thick elastic material 3 is made of, for example, vulcanized recycled rubber in order to have elasticity, stability and economy, and the lower surface thereof is usually formed as a flat surface. As shown in FIG. May be provided.

The thin elastic member 2 is made of urethane, polyester, virgin rubber, or the like so as to have a non-slip property, color, abrasion resistance, and elasticity. Further, the thin elastic member 2 is formed on the vulcanized thick elastic member 3 by unreacted viscous rubber material containing a crosslinking agent and a coloring agent in order to strengthen the adhesion to the thick elastic member 3. Laminate without interposing a rubber-based adhesive layer, pressurize (5 to 50 kg / cm ² ) and heat-treat (130 to 180 ° C)
It is made elastic by molding. At the same time as the elasticity, the joint between the thin elastic member 2 and the thick elastic member 3 is integrally bonded by a chemical reaction. In addition, at the time of such bonding, as described above, a fluid viscous rubber material is bonded and vulcanized on the solidified thick elastic material 3 without interposing a rubber-based adhesive layer. Good.

In order to improve the anti-slip effect, small irregularities may be provided on the upper surface of the thin elastic member 2 in the upper layer. Also, if a material is selected such that the thermal expansion coefficients of the thin elastic member of the upper layer and the thick elastic member of the lower layer are substantially the same,
A mat that is less likely to peel off between the two and has less warpage is obtained.

In addition, it is possible to prevent the migration of a plasticizer or the like between the thick elastic material forming the lower layer portion and the thin elastic material forming the upper layer portion, and to form the rubber-like film body 5 having good adhesiveness to both the upper and lower layers. By intervening, it is possible to prevent contaminants and pigments in the thick elastic material on the lower layer from migrating to the thin elastic material on the upper layer, and the upper and lower layers have good adhesion. Note that the rubber-like film body 5 is unvulcanized, and is superimposed on the upper surface of the thick elastic material 3 during the production of the mat, and the same viscous rubber material as above is superposed on the upper surface of the rubber-like film body and subjected to pressure and heat treatment. Creates a mat.

[Effects of the Invention] In the elastic subgrade mat of the present invention, since elastic materials having different characteristics are used for the upper layer and the lower layer, a subgrade mat having all required various characteristics is economically produced. can do. In addition, during the pressurization and heat treatment for making the thin elastic material of the upper layer elastic and molding, a chemical reaction occurs between the thin elastic material of the upper layer and the thick elastic material of the lower layer so that they are bonded, The adhesion between the two becomes strong and has durability. At the same time, the unvulcanized upper layer in the fluidized state is vulcanized and bonded to the vulcanized lower layer in the solidified state, so the expensive upper layer can be made thinner than the lower layer, We can provide economical products.

Further, when a rubber-like film is interposed between the thin elastic material of the upper layer and the thick elastic material of the lower layer, the plasticizer can be prevented from migrating between the lower layer and the upper layer, and Adhesion can be further improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of the elastic subgrade mat of the present invention, and FIG. 2 is a cross-sectional view of an example in which unevenness is provided on the lower surface of the elastic subgrade mat. 1; elastic subgrade mat; 2; thin elastic material 3; thick elastic material; 4; unevenness 5; rubber-like film

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location // B29K 21:00 B29L 9:00

Claims (2)

(57) [Scope of request for utility model registration] 1. A mat comprising a thick elastic material forming a lower layer portion and a thin elastic material forming an upper layer portion, wherein a cross-linking agent and a colorant are unreacted with a vulcanized thick elastic material. The viscous rubber material containing is laminated and heat-treated in a pressurized state to make the viscous rubber material elastic and thin elastic material, and that the upper and lower elastic materials are simultaneously bonded. An elastic subgrade mat. 2. A rubber-like film for preventing migration of a plasticizer or the like and improving adhesion is interposed between a thick elastic material forming a lower layer and a thin elastic material forming an upper layer. The elastic subgrade mat according to claim 1, wherein both the upper layer portion and the rubber-like film body are simultaneously vulcanized from an unvulcanized state to be simultaneously bonded to the lower layer portion.