Laminate sheet
US6902799B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2002 |
| Grant date | Jun 7, 2005 |
| Priority date | — |
| Expiry date | Jul 4, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/681
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laminated sheet which contains a cross-linking foam material, and radiates far infrared so that it has heat-insulating and heat-retentive properties. The laminated sheet (1) has a three-layered structure including polyethylene foam (2) having a sheet shape that is one example of a cross-linking foam material in which a substance that radiates far infrared rays is mixed, non-woven fabric (3) having a sheet shape formed on a lower face thereof and a polyester film (4) formed on an upper face thereof. Since the laminated sheet of the present invention is allowed to radiate far infrared rays, it can greatly shorten the snow-melting time, etc., because of its heat reflection effects in comparison with a sheet made of a single material of non-woven fabric, and it also makes it possible to greatly improve heat-insulating and heat-retentive effects, and also to provide medical effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.