Photomask container
AssigneeToppan Printing Co., Ltd.
InventorsWatanabe Toshimitsu, Y. Matsuzawa
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Abstract
The improved photomask container which is molded and fabricated from a thermoplastic resin is characterized in that the thermoplastic resin comprises a cellulose ester and that the surface of the molded and fabricated article is saponified with an alkali. The container does not give off malodor, has electric conductivity and is free from the problem of sodium release.
Claims6
A photomask container molded and fabricated from a thermoplastic resin, the container being an airtightly closable container comprising an inner case for holding a plurality of photomasks, an outer case accommodating the inner case, and a top cover, said thermoplastic resin comprising a cellulose ester and a surface of the molded and fabricated article being saponified with an alkali.
Dependencies are inferred from the claim text.