Method for the production of a vacuum insulation element wrapped in a film, filled with powder
US8281558B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2006 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Jun 18, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L59/065
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for producing an especially panel-shaped vacuum insulation element which is wrapped in a film and is filled with a powder. According to the method, the unmolded, loose powder is filled, particularly poured, into the opening of a bag which is formed from a high-barrier film and is open on one side. A filter material that is permeable to air and impermeable to powder dust is fixed to the internal face of the film bag in the area of the opening of the filled film bag such that the interior of the bag is closed in a dust-tight manner while air can still be discharged. The interior of the dust-tightly closed film bag is then evacuated and the evacuated film bag is air-tightly closed in a vacuum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.