Wound covering and its method of production by extrusion coating
US8242325B2 · kind B2 · utility
1Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2006 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Dec 6, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2535/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a production method for a foam wound dressing with an outer germ barrier, in particular a film layer, and to a wound dressing obtained by such a method. In the method according to the invention, the germ barrier is generated by means of extrusion directly on the foam support. This results in a more reliable union between foam layer and germ barrier, without thereby compromising the absorbency of the foam in respect of wound exudate. The proposed method is simple and inexpensive and is able to satisfy all the requirements of the medical sector (e.g. freedom from solvents).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.