Method for making permeable film
US6427419B2 · kind B2 · utility
5Cited by
14References
35Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 12, 2001 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Feb 12, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a method for making a permeable film, a physical force is applied to a film of a first material containing particles of a second material which is different from the first material. The second material has a higher susceptibility to the physical force than does the first material. Applying the physical force to the film affects the particles which in turn affect the first material of the film, thereby increasing permeability of the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.