Patent ID: 6139938
Filing Date: 2000-10-31
Classification: B31F,B32B,Y10T

Abstract:
A corrugated paperboard comprising:a first flat paper liner, said first flat paper liner having a caliper thickness of about 0.0085 to about 0.010 inches;a second flat paper liner, said second flat paper liner having a caliper thickness of about 0.0065 to about 0.010 inches; and,a corrugated middle layer sandwiched between said first and second flat paper liners, said corrugated middle layer being comprised of a paper stock having a caliper thickness of about 0.005 to 0.008 inches and said corrugated middle layer having about 175 to 185 flutes per linear foot;said corrugated paperboard having a combined caliper thickness of about 0.036 to 0.042 inches.