发明名称 |
película de polipropileno biaxialmente orientada em multicamada |
摘要 |
A multilayer biaxially oriented polypropylene film is disclosed which comprises at least three layers. The first layer is an outer layer comprising a first polymer which is a homopolymer polypropylene resin having a melting point of at least 155° C. The second layer is a core layer, having a melting point greater than 150° C. The core layer includes a blend comprising a second polymer which is a polypropylene homopolymer having a melting point of at least 155° C. and a third polymer having a melting point no greater than 145° C. The second polymer comprises from 20% to 80% by weight of the core layer while the third polymer comprises from 80% to 20% by weight of the core layer. The last required layer in the film is a sealant layer. The sealant layer comprises a fourth polymer having a melting point no greater than 145° C. |
申请公布号 |
BRPI0924024(A2) |
申请公布日期 |
2016.07.19 |
申请号 |
BR2009PI24024 |
申请日期 |
2009.04.10 |
申请人 |
DOW GLOBAL TECHNOLOGIES LLC |
发明人 |
HONGYU CHEN;JING LI;MORGAN M. HUGHES;RAJEN M. PATEL;XIAO B. YUN;YONG CHEN |
分类号 |
B32B27/30;B29K23/00;B65D65/40 |
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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