Polyester films with improved processability and t

专利名称：Polyester films with improved processability

and tear resistance

发明人：Andrew H. Wong申请号：US06/151415申请日：19800519公开号：US04311741A公开日：19820119

摘要：Polyester films consisting of a homogeneous fused, intimate mixture ofpolyethylene terephthalate (PET) with sufficient polytetramethylene terephthalate(PTMT) to increase film tear strength in excess of 10%. Mixed PET and PTMT resins areextruded and used to produce unoriented, uniaxially oriented, and biaxially orientedpolyester films with significantly increased tear strengths. Increased tear strengths areexhibited at different PET-PTMT weight ratios depending upon the orientation of thefilm.

申请人：MINNESOTA MINING AND MANUFACTURING COMPANY

代理人：Cruzan Alexander,Donald M. Sell,David R. Cleveland

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