Patent ID: 9649823
Date: 2017-05-16
CPC Classifications: B32B,B65B,Y10T

Claim:
1. A flexible packaging material comprising: a core cellulosic fiber-based portion having a honeycomb structure, the core cellulosic fiber-based portion defining two spaced-apart substantially planar faces and providing air space therebetween, the core cellulosic fiber-based portion including a stack of cellulosic fiber-based sheets bonded together at spaced-apart intervals in a staggered configuration; and at least a first cellulosic fiber-based liner and a second cellulosic fiber-based liner, the first liner and the second liner being bonded to a respective one of the planar faces of the core portion, the first liner having a first liner grammage and the second liner having a second liner grammage different than the first liner grammage, the material being bendable.