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RETORTABLE PACKAGING FILM WITH HAVING SEAL/PRODUCT-CONTACT LAYER CONTAINING BLEND OF POLYETHYLENES AND SKIN LAYER CONTAINING PROPYLENE-BASED POLYMER BLENDED WITH POLYETHYLENE
RETORTABLE PACKAGING FILM WITH HAVING SEAL/PRODUCT-CONTACT LAYER CONTAINING BLEND OF POLYETHYLENES AND SKIN LAYER CONTAINING PROPYLENE-BASED POLYMER BLENDED WITH POLYETHYLENE
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机译:具有含有聚乙烯的密封/产品接触层和含有聚乙烯的皮肤层的基于丙烯的聚合物的可蒸煮包装膜
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摘要
A retortable multilayer packaging film comprises a crosslinked first layer which serves as an outer heat seal/ product contact layer, and a crosslinked second layer which serves as an outer heat seal/ skin layer. The crosslinked first outer heat seal/ product contact layer comprises a blend of a homogeneous ethylene/alpha-olefin copolymer and a heterogeneous ethylene/alpha-olefin copolymer and/r a propylene/ethylene copolymer having a melting point of from about 110°C to about 150°C and having up to 4.9 weight percent ethylene mer. The crosslinked outer heat seal/skin layer comprises a blend of: an isotactic propylene-based polymer, and a homogeneous ethylene/C4-8 alpha-olefin copolymer having a density of from about 0.86 g/cc to about 0.91 g/cc. The invention also pertains to packaging articles made from the film, packaged products utilizing the film in the package, and a packaging process utilizing the film.
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机译:可蒸煮的多层包装膜包括用作外部热封/产品接触层的交联的第一层和用作外部热封/表层的交联的第二层。交联的第一外部热封/产物接触层包含均相乙烯/α-烯烃共聚物和均相乙烯/α-烯烃共聚物和/或丙烯/乙烯共聚物的共混物,其熔点为约110℃至约120℃。 150℃并具有高达4.9重量%的乙烯单体。交联的外部热封/表层包含以下混合物:等规丙烯基聚合物和密度为约0.86 g / cc至约0.91 g / cc的均质乙烯/ C4-8α-烯烃共聚物。本发明还涉及由膜制成的包装制品,利用包装中的膜的包装产品以及利用膜的包装方法。
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