EMBOSSED INSULATING PAPERBOARD

摘要

An insulating paperboard contains at least one layer of cellulose fibers. Th e one layer is at least partially composed of bulky fibers. The paperboard is sufficiently insulated to provide a hot water .DELTA.T across the paperboard of at least 0.7.degree.C ~ 2.,3.degree.C per 0.1 mm of caliper. The paperboard may be embossed to decrease surface transmission of heat. A hot cup may be produced from the insulating paperboard.