发明名称 THERMOFORMABLE MULTI-LAYER POLYPROPYLENE FOAM SHEET
摘要 A thermoformable, multilayer, co-extruded sheet comprising at least two separate foam polypropylene layers obtained by chemical foaming of two polypropylene resins having different flexural modulus, a "hi gh modulus" polypropylene and a "low modulus" polypropylene. The presence of two different foam layers of polypropylene of different modulus allows obtaining a thermoformable sheet with the desired balance between thermoformability and stiffness.
申请公布号 CA2346804(C) 申请公布日期 2009.07.14
申请号 CA19992346804 申请日期 1999.10.04
申请人 CRYOVAC, INC. 发明人 COLNAGHI, RENATO;DI CESARE, GREGORIO
分类号 B32B5/32 主分类号 B32B5/32
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