PACKAGING MATERIAL FOR COLD FORMING AND PRESS-THROUGH PACK FORMED USING SAME
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United States of America Patent
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Oct 22, 2015
app pub date -
Nov 27, 2013
filing date -
Nov 30, 2012
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Abstract
The packaging material for cold forming of the present invention includes a polyamide resin film biaxially stretched by a tenter method and an aluminum foil provided on one surface of the polyamide resin film and integrated with the polyamide resin film. The distortion of the polyamide resin film caused by applying thereto a tension corresponding to the tensile break tension of the aluminum foil is 20% or more and 45% or less. Herewith, it is possible to provide a packaging material for cold forming excellent in cold formability, capable of suppressing the breakage of the aluminum foil during the cold forming in the case where the polyamide resin film biaxially stretched by the tenter method is used.
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