Method of preparing honeycomb insulation structure
US4088723A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1976 |
| Grant date | May 9, 1978 |
| Priority date | — |
| Expiry date | Feb 26, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24157
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Method is disclosed for preparing a honeycomb insulation structure having its cells partially filled with a low density foam and a high density integral skin completely covering one edge of the honeycomb. Method comprises placing one edge of a honeycomb in an inert material; introducing a foamable or foaming substance into the cells and allowing it to rise from the surface of the inert material until it overflows slightly. The overflowing foam comes into contact with a pressure platen just above the honeycomb thereby forming the high density integral skin. The level of the material in the cell determines the thickness of the void on one edge. Structure has utility in cryogenic storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.