the present invention relates to a biodegradable paperboard - based package for various food products . the package utilizes a novel heat - sealable laminate structure wherein the exterior gloss heat - sealable layer is a degradable polymeric resin material such as a polyvinyl alcohol resin or a starch based low density polyethylene polymer resin . utilization of the material in a novel fashion accelerates the paperboard substrate &# 39 ; s degradative properties and tendencies .