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US 2006/0068671 A1Published application
Cushioning material for press forming and manufacturing method thereof
OwnerAkira Yoshidainventor
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Abstract
A cushioning material according to the present invention comprises a cushioning layer and a surface layer comprising a non-thermoplastic polyimide film which is integrally bonded onto the cushioning layer without a bonding agent layer. The non-thermoplastic polyimide film is provided by heating a polyamic acid film integrally bonded onto the cushioning layer without a bonding agent and thereby imidating the polyamic acid.
Claims15
A cushioning material for press forming comprising:
- a cushioning layer;
- a layer comprising a non-thermoplastic polyimide film and integrally bonded onto said cushioning layer without a bonding agent layer.
A method of manufacturing a cushioning material for press forming comprising:
- a laminating step of laminating a cushioning layer and a polyamic acid film to provide a laminated body;
- an integrally bonding step of integrally bonding said cushioning layer and said polyamic acid film by hot-pressing said laminated body;
- and
- a non-thermoplastic polyimide film forming step of imidating said polyamic acid film on said cushioning layer by heating said integrally bonded body to form a non-thermoplastic polyimide film on a surface of said cushioning layer.
1 more element
Dependencies are inferred from the claim text.