发明名称 |
THERMOFORMABLE MULTI-LAYER POLYPROPYLENE FOAM SHEET |
摘要 |
<p>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 "high modulus" polypropylene and a "low modulus" polypropylene. The presence of two differe nt foam layers of polypropylene of different modulus allows obtaining a thermoformable sheet with the desired balance between thermoformability and stiffness.</p> |
申请公布号 |
CA2346804(A1) |
申请公布日期 |
2000.04.27 |
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;(IPC1-7):B32B5/32 |
主分类号 |
B32B5/32 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|