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US 6,555,190 B1Granted
Films with UV blocking characteristics
AssigneeHoneywell International Inc.
InventorMingliang Lawrence Tsai
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AssigneeHoneywell International Inc.
InventorMingliang Lawrence Tsai
Estimating the term…
The present invention provides coextruded or laminated multilayer films having at least one layer of a halopolymer such as poly(chlorotrifluoro ethylene) (PCTFE), at least one layer of a naphthalene containing polymer such as poly(ethylene naphthalate) (PEN), and an intermediate adhesive layer. The invention further provides methods of producing oriented, multilayer films which comprise either coextruding or laminating at least one layer of a halopolymer to a surface of at least one layer of a naphthalene containing polymer by an intermediate adhesive layer. The multilayer film may be uniaxially or biaxially stretched, and an optional thermoplastic polymer layer may be attached to another surface of either the halopolymer layer, the naphthalene containing polymer layer, or both, by another intermediate adhesive layer.
A multilayer flat film structure which comprises at least one halopolymer layer which comprises at least one component selected from the group consisting of homopolymers and copolymers of fluoropolymers and chlorofluoropolymers, and at least one naphthalene containing polymer layer attached to the halopolymer layer by an intermediate adhesive layer.
A method or producing an oriented, multilayer flat film structure which comprises coextruding and attaching a layer of a halopolymer which comprises at least one component selected from the group consisting of homopolymers and copolymers of fluoropolymers and chlorofluoropolymers, to a naphthalene containing polymer layer by a coextruded intermediate adhesive layer.
A method of producing a multilayer flat film structure which comprises laminating a layer of a halopolymer which comprises at least one component selected from the group consisting of homopolymers and copolymers of fluoropolymers and chlorofluoropolymers, to a layer of a naphthalene containing polymer by an intermediate adhesive layer.
A packaging film in the form of a multilayer flat film structure which comprises at least one halopolymer layer which comprises at least one component selected from the group consisting of homopolymers and copolymers of fluoropolymers and chlorofluoropolymers, and at least one naphthalene containing polymer layer attached to the halopolymer layer by an intermediate adhesive layer.
A packaging film for foods and pharmaceuticals in the form of a multilayer flat film structure which comprises at least one halopolymer layer which comprises at least one component selected from the group consisting of homopolymers and copolymers of fluoropolymers and chlorofluoropolymers, and at least one naphthalene containing polymer layer attached to the halopolymer layer by an intermediate adhesive layer.
Dependencies are inferred from the claim text.