Process for producing multilayer structures having a layer formed from a blend of an ethylene-alpha-olefin interpolymer and an ethylene-alkyl acrylate interpolymer
AssigneeEastman Chemical Company
InventorsBradley Scott Westbrook, Guy Glen Luneau
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Abstract
There is disclosed a process for producing a multilayer structure, the film of which has particular utility as a masking film for the substrate layer. The process comprises the cast film process producing a monolayer film from a specified blend of ethylene-alpha-olefin and ethylene-alkyl acrylate interpolymers, or a multilayer film, at least one of the layers formed from the blend of interpolymers, and pressing the cast film process produced monolayer or multilayer film onto a polymeric or glass substrate layer that is maintained at a temperature of about 38 to about 80° C. during the pressing of the layers.
Claims16
A process for producing multilayer structures comprising
- (a) forming by cast process a monolayer film layer from a blend comprising (1) an ethylene-alpha-olefin interpolymer, wherein the alpha-olefin has from 3 to 16 carbon atoms, having a melt index ranging from about 0.3 to about 10 g/10 min., and a density ranging from about 0.88 to less than 0.920 g/cc, present in an amount of from less than 75% to about 10% by weight of the blend, and (2) an ethylene-alkyl acrylate interpolymer, wherein the alkyl group has from 1 to 10 carbon atoms, having a melt index ranging from about 0.3 to about 20 g/10 min., an ethylene content of from about 70% to about 85% by weight of the ethylene-alkyl acrylate interpolymer, and an alkyl acrylate content of from about 15 to about 30% by weight of the ethylene-alkyl acrylate interpolymer, present in an amount of from greater than 25% to about 90% by weight of the blend, and
- (b) pressing the monolayer film layer onto a substrate layer wherein the substrate layer is selected from the group consisting of a polymeric material or glass, and wherein the substrate layer is maintained at a temperature ranging from about 38° C. to about 80° C. during the pressing of the monolayer film layer onto the substrate layer.
A process for producing multilayer structures comprising
- (a) forming by cast process a multilayer film layer of which at least one of the film layers is formed from a blend comprising (1) an ethylene-alpha-olefin interpolymer, wherein the alpha-olefin has from 3 to 16 carbon atoms, having a melt index ranging from about 0.3 to about 10 g/10 min., and a density ranging from about 0.88 to less than 0.920 g/cc, present in an amount of from less than 75% to about 10% by weight of the blend, and (2) an ethylene-alkyl acrylate interpolymer, wherein the alkyl group has from 1 to 10 carbon atoms, having a melt index ranging from about 0.3 to about 20 g/10 min., an ethylene content of from about 70% to about 85% by weight of the ethylene-alkyl acrylate interpolymer, and an alkyl acrylate content of from about 15 to about 30% by weight of the ethylene-alkyl acrylate interpolymer, present in an amount of from greater than 25% to about 90% by weight of the blend, and
- (b) pressing the multilayer film layer onto a substrate layer wherein the substrate layer is selected from the group consisting of a polymeric material or glass, and wherein the substrate layer is maintained at a temperature ranging from about 38° C. to about 80° C. during the pressing of the multilayer film layer onto the substrate layer.
Dependencies are inferred from the claim text.