Laminated film and packaging container
AssigneeToppan Printing Co., Ltd.
InventorsIkuno Iguchi, Sachiko Sugaya
Life of this patent
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Abstract
A laminated film including: an inner layer which is formed of a linear low density polyethylene resin and is heat-sealable; an outer layer which is laminated on the inner layer; a fragile processed portion which is formed by laser irradiation to the outer layer and has a depth reaching at least an inside of the outer layer and not penetrating the inner layer; and an intermediate layer which is provided between the inner layer and the outer layer, wherein the intermediate layer is an ink layer for reducing a lamination strength between the inner layer and the outer layer, and is formed in a region excluding the fragile processed portion and excluding a periphery of the fragile processed portion in planar view.
Claims8
A laminated film comprising:
- an inner layer which is formed of a linear low density polyethylene resin and is heat-sealable;
- an outer layer which is laminated on the inner layer;
- a fragile processed portion which is formed by laser irradiation to the outer layer and has a depth reaching at least an inside of the outer layer and not penetrating the inner layer;
- and
- an intermediate layer which is provided between the inner layer and the outer layer, wherein
- the intermediate layer is an ink layer for reducing a lamination strength between the inner layer and the outer layer, and is formed in a region excluding the fragile processed portion and excluding a periphery of the fragile processed portion in planar view.
A laminated film, comprising:
- an inner layer which is formed of a linear low density polyethylene resin and is heat-sealable;
- an outer layer which is laminated on the inner layer;
- a fragile processed portion which is formed by laser irradiation to the outer layer and has a depth reaching at least an inside of the outer layer and not penetrating the inner layer;
- and
- an intermediate layer which is provided between the inner layer and the outer layer, wherein
- the intermediate layer is a strong lamination layer increasing a lamination strength between the inner layer and the outer layer, and is formed in a region including both sides of the fragile processed portion in a longitudinal direction of the fragile processed portion in planar view.
Dependencies are inferred from the claim text.