Patent ID: 9138969
Filing Date: 2015-09-22
Classification: B29B,B29K,B32B,C08L,E04B,F16L,Y02W,Y10T

Abstract:
1. Insulation sheets, wherein each insulation sheet comprises: a homogeneous mixture of plastic materials comprising from about 40 wt % to 100 wt % of a combination of polystyrene (PS) and polyethylene terephthalate (PET) in a PS/PET weight ratio of from about 9:1 to 2:8; from about 20 wt % to 50 wt % of high density polyethylene; and less than about 5% of other types of plastic, wherein the materials are obtained from a plurality of crushed, melt blended and compression molded post-consumer plastic articles forming the sheets which are devoid of heavy non-plastic contaminants including glass, metals and fibers and having a thickness of from about 3 to 10 mm, and exhibit a thermal conductivity k of from about 0.08 to 0.12 W/m·° K, wherein the insulation sheets are laminated together into a composite laminate structure with trapped air in between the insulation sheets by an air impermeable seal all around a perimeter of the insulation sheet or a sandwiching air-containing bag between individual insulation sheets, wherein the homogeneous mixture of plastic materials are compressed to have the thickness of from about 3 to 10 mm, and to exhibit a thermal conductivity k of from about 0.08 to 0.12 W/m·° K.