| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a waterproof sheet which completely eliminates a defective adhesion, and largely contributes to improve workability. <P>SOLUTION: The waterproof sheet is formed of a substrate made of a metal material, a fluororesin base layer covering the substrate, and a fluororesin surface layer which is low in melting point than the fluororesin base layer and forms an adhesive layer by induction heating. In connecting the waterproof sheets, the fluororesin surface layers are abutted on each other, and abutting portions are induction-heated, and then the fluororesin surface layers are melted and bonded with each other. Preferably the fluororesin surface layers are abutted on each other, and they are induction-heated by an electromagnetic induction heater arranged on the upper waterproof sheet to melt the fluororesin surface layers, to thereby bond the fluororesin surface layers with each other. Alternatively, the waterproof sheet is abutted on a metal fixture having a fluororesin surface layer similar to that of the waterproof sheet, and they are induction-heated by the electromagnetic induction heater arranged on the upper waterproof sheet to melt the fluororesin surface layers, to thereby bond the fluororesin surface layers with each other. <P>COPYRIGHT: (C)2004,JPO</p> |
