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US 6,387,529 B1Granted
Biaxially oriented HDPE multilayer film
AssigneeExxon Mobil Oil Corporation
InventorRobert G. Peet
Life of this patent
Estimating the term…
Abstract
The present invention relates to a biaxially oriented multilayer film structure having (i) a core substrate of high density polyethylene; and (ii) an additional layer of syndiotactic polypropylene on at least one surface of the core substrate. Optionally, the film of the present invention includes at least one heat sealable layer on the outer surface of the additional layer.
Claims9
A biaxially oriented multilayer film structure comprising:
- (i) a core substrate having two surfaces, said core substrate consisting of high density polyethylene (HDPE);
- and
- (ii) a skin layer on at least one surface of said core substrate, said skin layer consisting of syndiotactic polypropylene having a melting point of from about 100° C. to about 150° C.,
- wherein said syndiotactic polypropylene is made with a metallocene catalyst and said biaxially oriented multilayer film structure further comprises at least one heat sealable layer on an outer surface of said skin layer.
1 more element
A biaxially oriented multilayer film structure comprising:
- (i) a core substrate having two surfaces, said core substrate consisting of high density polyethylene (HDPE) and one or more additives;
- and
- (ii) a skin layer on at least one surface of said core substrate, said skin layer consisting of syndiotactic polypropylene having a melting point of from about 100° C. to about 150° C. and at least one of (a) from about 0.1 to about 10% of ethylene and (b) one or more additives selected from the group consisting of antiblocking agents, antistatic agents, and slip agents,
- wherein said syndiotactic polypropylene is made with a metallocene catalyst and said biaxially oriented multilayer film structure further comprises at least one heat sealable layer on an outer surface of said skin layer.
1 more element
Dependencies are inferred from the claim text.