Evacuated insulation panel having non-wrinkled surfaces
US5858501A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249958
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.