| 摘要 |
A method (7) embossing thermoplastic sheet (20) by continuously advancing thermoplastic sheet (20) through an embossing nip defined by a rotating embossing roll (12) with an engraved surface at elevated embossing temperature and an opposite fixed rigid concave member (22) and pneumatically forcing the sheet (20) against the engraved surface while within and continuously passing through the nip.
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