发明名称 |
Extrusion coating process for making high transparency protective and decorative films |
摘要 |
A process for making a protective and decorative surfacing film comprises extrusion coating a solventless polymeric material from an extruder die to form an optically clear first layer on a polyester carrier sheet traveling past the extruder die opening. The extrusion coated first layer is immediately cooled on the carrier sheet to harden it, followed by applying a pigmented second layer to the first layer. The composite paint coat is transferred to a reinforcing backing sheet, after which the carrier sheet is separated from the paint coat to expose the outer surface of the first layer as a high gloss surface with a high distinctness-of-image, providing a transparent protective outer coat for the pigmented second layer. The pigmented second layer can be solvent cast and dried or extruded and hardened as a separate coating on the first layer. The composite paint coat can be bonded to a coextruded size coat and semi-rigid plastic substrate panel to form a thermoformable laminate. Techniques are disclosed for producing extruded clear films of exceedingly high optical clarity using a closed air flow transport and HEPA filtration system that removes airborne particles from the resin handling and extrusion process, thereby preventing micron-sized contaminants naturally present from many sources from entering the process and degrading ultimate film quality.
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申请公布号 |
US6254712(B1) |
申请公布日期 |
2001.07.03 |
申请号 |
US19990256967 |
申请日期 |
1999.02.24 |
申请人 |
AVERY DENNISON CORPORATION |
发明人 |
ENLOW HOWARD H.;MARKEY JOHN J.;ROYS JOHN E.;TRUOG KEITH L.;YOUNG FREDERICK |
分类号 |
B32B27/30;B05D1/00;B05D1/26;B29C31/04;B29C47/00;B29C47/10;B29D7/01;B29K23/00;B29K27/00;B29K27/12;B29K33/04;B29K75/00;B29L7/00;B32B27/08;B32B37/15;B32B38/12;B44C1/17;C08J9/00;(IPC1-7):B29C31/00 |
主分类号 |
B32B27/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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