Laminate film for preventing glass from shattering
AssigneeTeijin Limited
InventorsKoji Furuya, Shinya Watanabe, Shinichi Kawai, Kenji Suzuki
Life of this patent
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Abstract
A laminate film for preventing glass from shattering, which comprises: (A) a biaxially oriented polyester film of a copolyester containing ethylene-2,6-naphthalenedicarboxylate recurring units in an amount of at least 80 mol % of all recurring units, (B) an adhesive coating film on at least one side of the above biaxially oriented polyester film, (C) a hard coat layer on the above adhesive coating film, and (D) an antireflection layer on the above hard coat layer. This laminate film has not only excellent adhesive properties, surface hardness and abrasion resistance but also sufficient transparency, antireflection property and glass shatterproof performance.
Claims22
A laminate film for preventing glass from shattering, which comprises:
- (A) a biaxially oriented polyester film of a copolyester containing ethylene-2,6-naphthalenedicarboxylate recurring units in an amount of at least 80 mol % of all recurring units,
- (B) an adhesive coating film on at least one side of the above biaxially oriented polyester film, the adhesive coating film comprising a composition which contains a water-soluble or dispersible polyester having a secondary transition point of 40 to 85° C. and at least one amide compound selected from the group consisting of fatty acid amide and fatty acid bisamide,
- (C) a hard coat layer on the above adhesive coating film, with the proviso that when the adhesive coating film is formed on both sides of the biaxially oriented polyester film, the hard coat layer is formed on only one side of the adhesive coating films, and
- (D) an antireflection layer on the above hard coat layer.
A precursory laminate film for preventing glass from shattering, which comprises:
- (A) a biaxially oriented polyester film of a copolyester containing ethylene-2,6-naphthalene dicarboxylate recurring units in an amount of at least 80 mol % of all recurring units, and
- (B) an adhesive coating film on at least one side of the above biaxially oriented polyester film, the adhesive coating film comprising a composition which contains a water-soluble or dispersible polyester having a secondary transition point of 40 to 85° C. and at least one amide compound selected from the group consisting of fatty acid amide and fatty acid bisamide.
A base film for a laminate film for preventing glass shattering, which (A) comprises
- (a) a copolyester containing ethylene-2,6-naphthalenedicarboxylate recurring units in an amount of at least 80 mol % of all recurring units
- and which has (b) a plane orientation coefficient of 0.250 or more and
- (c) an intrinsic viscosity of 0.45 dl/g or more.
Dependencies are inferred from the claim text.