Method for making paperboard packaging containing a PVOH barrier

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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156497, 15624411, 15624423, 428 354, 428 366, 428 342, B32B 3112

Patent

active

055520022

ABSTRACT:
Paperboard packaging for non-refrigerated liquid products and for dry products contains a buried polyvinyl alcohol copolymer (PVOH) barrier layer which has a low oxygen permeability particularly at low relative humidity, and outer heat-sealable surfaces which provide good resistance to moisture penetration and a means for fabricating the packaging.

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