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US 9,527,254 B2Granted
Film for tire inner liner and method for manufacturing the same
AssigneeKolon Industries, Inc.
InventorsSo-Yeon Kwon, Hyun Namgoong, Young-Han Jeong
Life of this patent
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Abstract
This disclosure relates to a film for a tire inner liner including a base film layer that has 3 glass transition temperature peaks and an adhesive layer including a resorcinol-formalin-latex(RFL)-based adhesive, and a method for manufacturing the film for a tire inner liner.
Claims19
A film for a tire inner liner, comprising
- a base film layer comprising a polyamide-based resin, a copolymer comprising polyamide-based segments and polyether-based segments, and an adhesive layer comprising a resorcinol-formalin-latex (RFL)-based adhesive formed on at least one side of the base film layer,
- wherein the content of the polyether-based segments is 15 wt % to 50 wt % based on total weight of the base film layer, and
- the base film layer has at least 3 glass transition temperature peaks,
- wherein the copolymer comprising polyamide-based segments and polyether-based segments has a weight average molecular weight of 50,000 to 300,000.
1 more element
A method for manufacturing a film for a tire inner liner, comprising
- melting and extruding a mixture of polyamide-based resin and a copolymer of polyamide-based segments and polyether-based segments at 230 ° C. to 300 ° C. to form a base film layer, and
- forming an adhesive layer comprising a resorcinol-formalin-latex (RFL)-based adhesive on at least one side of the base film layer,
- wherein the content of the polyether-based segments of the copolymer is 15wt % to 50 wt % based on total weight of the base film layer, and
- the base film layer has at least 3 glass transition temperature peaks,
- wherein the copolymer of polyamide-based segments and polyether-based segments has a weight average molecular weight of 50,000 to 300,000.
2 more elements
Dependencies are inferred from the claim text.