Laminating film and laminate
AssigneeGunze Limited
InventorTakeshi Yamamoto
Life of this patent
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Abstract
To provide a laminate film having better shaping processability than conventional laminate films by disposing between the first resin layer 1 and the adhesive layer 3 the second resin layer 2 which has a Vicat softening point lower than that of the first resin layer, has a melting point lower than that of the first resin layer by 2° C. or more, is at least 0.5 times thicker than the first resin layer, and contains as the main component a propylene-α-olefin copolymer. In addition, it becomes possible to provide the laminated structure 5 having the laminate film provided with the second resin layer 2 on the substrate 4. Hence, the present invention has great industrial significance.
Claims9
A laminate film comprising:
- an adhesive layer composed of an adhesive agent;
- a first resin layer composed of a polypropylene resin and the first resin layer being formed above the adhesive layer;
- and
- a second resin layer formed between the first resin layer and the adhesive layer, the second resin layer containing a propylene-α-olefin copolymer as a main component, the second resin layer being at least 0.5 times thicker than the first resin layer, the second resin layer having a Vicat softening point lower than that of the first resin layer, and the second resin layer having a melting point lower than that of the first resin layer by 2° C. or more;
- and
- zinc oxide fine particles in at least one of the adhesive layer, the first resin layer, and the second resin layer.
A laminated structure comprising:
- a substrate;
- an adhesive layer composed of an adhesive agent and the adhesive layer being formed on a surface of the substrate;
- a first resin layer composed of a polypropylene resin and the first resin layer being formed on the adhesive layer;
- a second resin layer formed between the first resin layer and the adhesive layer, the second resin layer containing a propylene-α-olefin copolymer as a main component, the second resin layer being at least 0.5 times thicker than the first resin layer, the second resin layer having a Vicat softening point lower than that of the first resin layer, and the second resin layer having a melting point lower than that of the first resin layer by 2° C. or more;
- and
- zinc oxide fine particles in at least one of the adhesive layer, the first resin layer, and the second resin layer.
Dependencies are inferred from the claim text.