Method for processing a film
US7105072B2 · kind B2 · utility
1Cited by
15References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2002 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | May 13, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1057
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for processing a film. The method impressing the whole surface or a selected surface of the film to form protuberant structures on the film by using a transfer and an impresser which has grain projections formed thereon, wherein the protuberant structures have a protuberant shape with an opening hole on the tip or without an opening hole on the tip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.