Title:
積層体および包装材料
Document Type and Number:
Japanese Patent JP4582281
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a laminate not lowering the laminate strength between a barrier layer and a sealant layer even if a strong permeable substance is preserved as content over a long period of time, keeping sufficiently high seal strength and impurities sealability when laminates are mutually heat-sealed and capable of imparting moisture barrier properties and heat resistance, and a packaging material. SOLUTION: In the laminate comprising at least constitution of outermost- layer/barrier-layer/sandwiched-resin-layer/sealant-layer, the barrier layer and the sealant layer are characterized as follows. That is, the barrier layer (1) is an aluminum foil layer with a thickness of 9-200 μm and hot water modifying treatment is applied to the surface on the side of the sealant layer or both surfaces of the aluminum foil. The sealant layer (2) is a layer comprising an ethylene/α-olefin copolymer with a density of 0.925 g/cm<3> or more and a peak top of heat of fusion of 115 deg.C or higher.
Inventors:
Miki Ohashi
Application Number:
JP2001254042A
Publication Date:
November 17, 2010
Filing Date:
August 24, 2001
Export Citation:
Assignee:
Toppan Printing Co., Ltd.
International Classes:
B32B15/085; B65D65/40; B32B15/08; B32B15/20; B32B27/32; H01M2/02
Domestic Patent References:
| JP2001202927A | ||||
| JP54013587A | ||||
| JP11322966A | ||||
| JP11333980A | ||||
| JP2000340187A | ||||
| JP11263379A | ||||
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