Evacuated insulation panel having non-wrinkled surfaces

Details Evacuated insulation panel having non-wrinkled surfaces Evacuated insulation panel having non-wrinkled surfaces

1997-12-18

1999-01-12

Foelak, Morton

Stock material or miscellaneous articles

Sheet including cover or casing

Foamed or expanded material encased

264 48, 264424, 428 358, 4283044, 4283055, 4283084, 521 505, 521146, 521918, B32B 300

Patent

active

058585010

ABSTRACT:
There is an evacuated insulation panel comprising a corestock of an open-cell alkenyl aromatic polymer foam and a deformable receptacle. The foam has an open cell content of about 70 percent or more. The foam is situated within the receptacle. The receptacle is hermetically sealed. The open-cells of the foam and the interior of the receptacle are evacuated to an absolute pressure of about 10 torr or less. The foam has indentations therein which extend in two dimensions across a surface of the foam. The receptacle substantially conforms to the shape of the foam, including the indentations within. The panel has one or more surfaces which are substantially non-wrinkled. Further disclosed is a method for making the panel.

REFERENCES:
patent: 5346928 (1994-09-01), De Vos
patent: 5627219 (1997-05-01), Ogawa

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