Laminated foam insulation board of enhanced strength
US5695870A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1996 |
| Grant date | Dec 9, 1997 |
| Priority date | — |
| Expiry date | Jul 12, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/269
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed is a laminated foam insulation board having enhanced strength and resistance to bending and breaking. The board comprises a panel of an insulating plastic foam material and a thermoplastic facer film adhered to opposite surfaces of the panel. The facer films have an ultimate elongation of less than 200 percent in both machine and transverse directions, a yield tensile strength of at least 7,000 pounds per square inch (48,400 kilopascals) in both machine and transverse directions, and a 1 percent secant modulus of at least 200,000 pounds per square inch (1,380 megapascals) in both machine and transverse directions. The degree of adhesion is about 100 grams per inch or more (about 39.4 grams per centimeter or more) between the facer film and the foam panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.