Thermal insulating panel for use in an insulative container and method of making said panel
US3993811A · kind A · utility
33Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1975 |
| Grant date | Nov 23, 1976 |
| Priority date | — |
| Expiry date | Apr 25, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/29
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A panel having a double wall construction of a structural plastic material is provided with improved thermal insulative properties by (1) metallizing at least one surface of each wall of the panel with metal such as silver to provide a light reflective surface and to produce a partial barrier to atmospheric gases, (2) coating the metallized surface with a barrier plastic such as vinylidene chloride polymer, (3) evacuating the space enclosed by the walls of the panel, and (4) adding to the evacuated space a gas-absorbing material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.