Evacuated insulation panel having non-wrinkled surfaces
AssigneeThe Dow Chemical Company
InventorBruce A. Malone
Life of this patent
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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.
Claims9
An evacuated insulation panel, the panel comprising a corestock of an open-cell alkenyl aromatic polymer foam and a deformable receptacle, the foam comprising an alkenyl aromatic polymer material comprising greater than 50 weight percent of alkenyl aromatic monomeric units based upon the total weight of the alkenyl aromatic polymer material, the foam having an open cell content of about 70 percent or more, the receptacle being capable of receiving the foam and being hermetically sealed, the foam being situated within the receptacle, the receptacle being hermetically sealed, the open cells of the foam and the interior of the receptacle being evacuated to an absolute pressure of about 10 torr or less, the foam having indentations therein extending in two dimensions across a surface of the foam, the receptacle substantially conforming to the shape of the foam and the indentations therein.
An evacuated insulation panel, the panel comprising;
- a) a corestock of an open-cell alkenyl aromatic polymer foam, b) one or more rigid plates, and c) a deformable receptacle, the foam comprising an alkenyl aromatic polymer material comprising greater than 50 weight percent of alkenyl aromatic monomeric units based upon the total weight of the alkenyl aromatic polymer material, the foam having an open-cell content of about 70 percent or more, the plate being situated contiguous to a major surface of the foam, the receptacle being capable of receiving the foam and the plate and being hermetically sealed, the foam and the plate being situated within the receptacle, the receptacle being hermetically sealed, the open-cells of the foam and the interior of the receptacle being evacuated to an absolute pressure of about 10 torr or less, the plate having one or more indentations therein, the receptacle substantially conforming to the shape of the foam and the indentations within the plates.
Dependencies are inferred from the claim text.