Gas barrier laminate and method for producing the gas barrier laminate
AssigneeToppan Printing Co., Ltd.
InventorToshiya Ishii
Life of this patent
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Abstract
A gas barrier laminate of the present invention includes a biaxially-oriented polypropylene base and an aluminum oxide thin film formed on one surface of the biaxially-oriented polypropylene base. The biaxially-oriented polypropylene base has a plane orientation factor ΔP ranging from 0.005 to 0.020 according to phase-contrast measurement. Further, the gas barrier laminate of the present invention includes a biaxially-oriented polypropylene base and an aluminum oxide thin film formed on one surface of the biaxially-oriented polypropylene base. The biaxially-oriented polypropylene base has a molecular chain whose orientation angle measured by phase-contrast measurement ranges from 50° to 90° or from −50° to −90° relative to an MD direction.
Claims7
A gas barrier laminate comprising:
- a base comprising a biaxially-oriented polypropylene film and an anchor coat layer;
- and
- an aluminum oxide thin film adhered to at least one surface of the base, wherein:
- the aluminum oxide thin film is adhered to the anchor coat layer;
- the anchor coat layer comprises a material selected from a polyester resin, a urethane resin, an acrylic resin, and an oxazoline group-containing resin;
- and
- the biaxially-oriented polypropylene film has a molecular chain whose orientation angle measured by phase-contrast measurement ranges about from 50° to 90° or −50° to −90° relative to an MD direction, and has a plane orientation factor ΔP ranging from about 0.005 to about 0.020 according to phase-contrast measurement.
A method for producing a gas barrier laminate comprising:
- selecting as a base a biaxially-oriented polypropylene film having a molecular chain whose orientation angle measured by phase-contrast measurement ranges about from 50° to 90° or −50° to −90° relative to an MD direction, and having a plane orientation factor ΔP ranging from about 0.005 to about 0.020 according to phase-contrast measurement;
- and
- laminating an aluminum oxide thin film at least on one surface of the base.
A method for producing a gas barrier laminate comprising:
- preparing a base by applying reactive ion etching to a biaxially-oriented polypropylene film to control an orientation angle of molecular chain measured by phase-contrast measurement to a range of about from 50° to 90° or −50° to −90° relative to an MD direction, and control a plane orientation factor ΔP to a range of about 0.005 to about 0.020 according to phase-contrast measurement;
- and
- laminating an aluminum oxide thin film at least on one surface of the base.
A gas barrier laminate comprising:
- a base consisting of a biaxially-oriented polypropylene film and a surface-treated layer formed by discharge treatment;
- and
- an aluminum oxide thin film adhered to at least one surface of the base, wherein:
- the aluminum oxide thin film is adhered to the surface treated layer;
- and
- the biaxially-oriented polypropylene film has a molecular chain whose orientation angle measured by phase-contrast measurement ranges about from 50° to 90° or −50° to −90° relative to an MD direction, and has a plane orientation factor ΔP ranging from about 0.005 to about 0.020 according to phase-contrast measurement.
Dependencies are inferred from the claim text.