Thermal camouflage
US4529633A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 6, 1984 |
| Grant date | Jul 16, 1985 |
| Priority date | — |
| Expiry date | Jan 6, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24504
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a thermal camouflage material comprising a supporting layer (4), e.g. a woven material, on which a polyethylene film layer (1), metallized on one side, has been laminated with the aid of fusion adhesive (3). The exposed surface of the plastic film is embossed to make it matte. Polyethylene is highly transparent to infrared radiation and has low emissivity, self radiation. By means of the metal layer (2) there is also obtained radiation insulation so that the outer layer (1) is in a thermal equilibrium which is hardly affected, e.g. by a warm object which is covered with the material, and the outer layer has a low emission ability of about 0.4-0.95, depending on thickness and pigmentation. By applying further patchy layers (5) patchy images will be obtained in image-forming by infrared sensitive instruments in the wavelength ranges 3-5 .mu.m and 8-14 .mu.m. The camouflage material may also include a layer of plastic foam insulating material arranged inwardly of the supporting layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.