LAMINATED FILM AND PACKAGING BAG EXCELLENT IN BOILING BURST RESISTANCE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To develop high burst resistance at a time of heat treatment such as boiling treatment or retort treatment, especially, at a time of air-containing boiling treatment by using a crosslinked resin with a glass transition point of a predetermined value or less as an adhesive layer. ;SOLUTION: This laminated film is obtained by forming a sealant layer on at least the single surface of a polyamide base layer film through an adhesive layer. The adhesive layer is formed from a crosslinked resin with a glass transition point of 10°C or lower and provided for the purpose of bonding the polyamide base layer film and the sealant layer and, as the constitutional material of the adhesive layer, it is necessary to use the crosslinked resin with a glass transition point of 10°C or lower. This laminated film is excellent in air- containing boiling burst resistance at a time of boiling treatment, restort treatment, especially, severe air-containing boiling treatment and can be widely used in a packaging field of an article such as moisture-containing food inclusive of raw noodles.;COPYRIGHT: (C)1997,JPO