Refractory/heat insulating panels
US5678369A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1994 |
| Grant date | Oct 21, 1997 |
| Priority date | — |
| Expiry date | Aug 24, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F13/0826
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed is a refractory/heat insulating panel used in buildings and structures which must have a refractory performance. In the refractory/heat insulating panel (801), the mechanical strength and the fireproofing performance at the joint portions, which are weak portions in the panel, are increased by integrally forming inorganic boards (831) in the male and female joint portions (832, 836), filling a light-weight aggregate in the core material located at the male and female joint portions at a high density, or making the density of the core material at the joint portions higher than that at the center of the panel. Further, a nonwoven fabric is inserted between a core material (829) and a surfacing material (802) and between the core material (829) and a backing material (822), the surfaces of the surfacing material and the backing material facing the core material are embossed, a layer of isocyanurate foam and/or a layer of polyurethane foam are provided in the core material, or a wooden reinforcing material or a pipe-shaped member is buried in the core material to improve the adhesion between the core material and the surfacing material and between the core material and the ba…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.