| 摘要 |
PROBLEM TO BE SOLVED: To prevent generation of gas contaminating a magnetic disk and the like, when an electronic equipment is used by applying a treatment for eliminating the gas contained, before forming a gasket material attached by integrating the gasket with a frame body into a specified shape. SOLUTION: Butyl-rubber and thermoplastic elastomer are used in a gasket material, which is used as a cover with a gasket and the gasket with a frame formed in a cover body and a frame body 1. Gas contained in the gasket material is eliminated by means of heat process, vacuum dry process, and the like. When the gasket material is a pellet shape, a heat processing is carried out under conditions in which a temperature is 40 to 160 deg.C for a time of 0.5 to 120 hours. The frame body 1 and the gasket 2 are integrated with each other, in such a way that the gasket 2 is formed in the frame body 1 with an injection molding method, when the material of the gasket 2 is a thermoplastic elastomer. After the gasket material for forming the gasket 2 is formed into a prescribed shape, gas contained in the gasket material is removed.
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