发明名称 Multi-layer sheet having a weatherable surface layer
摘要 A multi-layer sheet and a process for producing the sheet are disclosed. The sheet can comprise a first polymer layer comprising a weatherable film of polyvinyl fluoride (PVF) or polyvinylidene fluoride (PVDF) having an adhesive coating on one side; second pigmented polymer layer extruded onto the adhesive coating of the first polymer layer; and optionally a third extruded thermoformable polymer backing layer. The process can comprise combining a pigmented polymer onto the adhesive coating surface of the weatherable film of PVF or PVDF, passing the resulting structure into a nip of two rolls under pressure and subsequently an optional third thermoformable polymer backing layer is extruded or laminated onto the pigmented polymer layer.
申请公布号 US7303793(B2) 申请公布日期 2007.12.04
申请号 US20040960426 申请日期 2004.10.07
申请人 E. I. DU PONT DE NEMOURS AND COMPANY 发明人 SMILLIE BENJAMIN ANDREW
分类号 B32B27/08;B32B5/16;B32B27/18;B32B27/30 主分类号 B32B27/08
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