Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1995-06-07
1998-08-11
Wilson, Donald R.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428516, 525240, B32B 2732, C08L 2308
Patent
active
057925348
ABSTRACT:
The subject invention provides a polymer mixture having high heat resistivity, low hexane extractive and controllably lower or higher modulus. The mixture is comprised of at least one first substantially linear ethylene polymer, Component (A), and at least one second ethylene polymer which is a homogeneously branched polymer, heterogeneously branched linear polymer or a non-short chain branched linear polymer. When fabricated into film, the mixture is characterized by a heat seal initiation temperature which is substantially lower than its Vicat softening point as well as a high ultimate hot tack strength. When fabricated as a molded article, the mixture is characterized by high microwave warp distortion while maintaining a lower modulus. The polymer mixture is particularly well-suited for use in multilayer film structures as a sealant layer for such applications as cook-in packages, hot-fill packages, and barrier shrink films. In molding applications, the mixture is well-suited as freezer-to-microwave food storage containers and lids which maintain good flexibility at low temperature to allow easy openability of such containers.
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deGroot Jacquelyn A.
Hazlitt Lonnie G.
Jain Pradeep
Karande Seema V.
Mergenhagen Laura K.
The Dow Chemical Company
Wilson Donald R.
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