Patent ID: 6722521
Filing Date: 2004-04-20
Classification: B29C,B29L,B32B,B60K,B60P

Abstract:
A low permeation pinchoff connection between first and second formed multilayer walls joined together, the low permeation pinchoff connection comprising:a continuous inner polymeric layer at a pinchoff end of a pinchoff region between the first and second formed sheets; an outer polymeric layer in overlying relationship with the continuous inner polymeric layer, the outer polymeric layer tapering at the pinchoff region to first and second outer polymeric ends at the pinchoff end separating the first and second outer polymeric ends; a low permeation barrier layer disposed between the continuous inner polymeric layer and the outer polymeric layer, the low permeation barrier layer tapering with the outer polymeric layer at the pinchoff region to first and second barrier ends separated at the pinchoff end to define a pinchoff gap, the low permeation barrier layer being exposed at the pinchoff end; a first adhesive layer disposed between the continuous inner polymeric layer and the low permeation barrier layer; a second adhesive layer disposed between the low permeation barrier layer and the outer polymeric layer; and a barrier bridge disposed on the pinchoff end to bridge the pinchoff gap, the barrier bridge having material compatible with the low permeation barrier layer to connect the first and second barrier ends for continuity therebetween.