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US 11,813,827 B2Granted
Clear film for bags
AssigneeInteplast Group Corporation
InventorsShen-Hsiu Hung, Ter-Hai Lin
Life of this patent
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Abstract
A multilayer film having coextruded layers comprising a znLLDPE-based core layer, and mLLDPE-based outer layers on each side of the core layer comprising, wherein the znLLDPE of the core layer has a density which is less than 0.005 g/cc different from a density of the mLLDPE of the outer layers, and wherein the znLLDPE of the core layer has a melting temperature which is less than 15° C. different from a melting temperature of the mLLDPE of the outer layers.
Claims18
A coextruded film comprising:
- a znLLDPE-based core layer comprising at least about 50 wt. % znLLDPE;
- and
- mLLDPE-based outer layers on each side of the core layer comprising at least about 50 wt % mLLDPE;
- wherein the znLLDPE of the core layer has a density which is less than 0.005 g/cc different from a density of the mLLDPE of the outer layers;
- wherein the znLLDPE of the core layer has a melting temperature which is less than 15° C. different from a melting temperature of the mLLDPE of the outer layers;
- and
- wherein the film has an overall thickness, the overall thickness is between 5 and 200 microns, the film has a dart impact strength under ASTM D1709, and the dart impact strength divided by the overall thickness is greater than 750 g/mil.
4 more elements
Dependencies are inferred from the claim text.