| 摘要 |
<p>PROBLEM TO BE SOLVED: To implement a simple, sabe and economical disposal and recycling of a joined material comprising rubber and metal which is difficult to be disposed of, with safe water and a small amount of heat energy by sealing the joined object and others together with water in a sealed high pressure container to be heated at a specified temperature. SOLUTION: A joined material 1 of rubber and metal is manufactured by a process in which a steel plate which has been washed with a solvent, dried, and coated with an adhesive primer after being subjected to sand blast treatment and an uncrosslinked natural rubber block are heated/pressed. The material 1 is put into water in a high pressure container 3 filled with water 2 and sealed, after being heater at a temperature exceeding 100 deg.C by a heater 5 in a high temperature tank 4, and cooled by removing the container 3. By heating the material 1 in high pressure high temperature water, a joined part can be broken by decreasing the strength of the part so that separation into recyclable rubber and metal is made possible. Accordingly, with safe water and a small amount of heat energy, simple, economical treatment is made possible.</p> |
