Title:
GAS BARRIER LAMINATED FILM AND PACKAGING BAG
Document Type and Number:
WIPO Patent Application WO/2016/067727
Kind Code:
A1
Abstract:
[Problem] To provide a laminated biaxially-oriented polyamide film and packaging bag having an inorganic thin-film layer suitable as a packaging material or the like for food products, medical products, chemical agents, and the like for which a variety of gas barrier properties are required, such film and packaging bag offering: superior bag breakage resistance, impact resistance, and flexural fatigue resistance, and especially flexural fatigue resistance in low-temperature environments; superior effects of prevention of bag breakage or the like during transportation or storage of goods when used as a packaging material for food packaging or the like; and both high heat seal strength and favorable outer appearance, even when automatically filled at high speed with a liquid soup, seasoning, or the like. [Solution] A gas barrier laminated film in which an inorganic thin-film layer is laminated onto one side or both sides of a base film, the gas barrier laminated film being characterized by satisfying the following conditions (1) to (4): (1) The heat shrinkage factor in the longitudinal direction, with ten minutes of retention under dry heat at 160°C, is 1.5 to 4.0%; (2) The heat shrinkage factor in the lateral direction is 2.1 to 4.5%; (3) The film thickness is less than 9 μm; and (4) The elastic modulus is 2.2 GPa or below.
Inventors:
ITO TOMOKI (JP)
ENDO TAKURO (JP)
ENDO TAKURO (JP)
Application Number:
PCT/JP2015/073958
Publication Date:
May 06, 2016
Filing Date:
August 26, 2015
Export Citation:
Assignee:
TOYO BOSEKI (JP)
International Classes:
B32B9/00; B32B27/34; B65D30/02; B65D65/40; B65D81/24; C23C14/08
Foreign References:
| JP2010253713A | 2010-11-11 | |||
| JP2010234552A | 2010-10-21 | |||
| JP2010253711A | 2010-11-11 | |||
| JP2004174998A | 2004-06-24 | |||
| JP2009220530A | 2009-10-01 | |||
| JPH1058587A | 1998-03-03 |
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