Carbon paper recycling system
US4045243A · kind A · utility
14Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 19, 1975 |
| Grant date | Aug 30, 1977 |
| Priority date | — |
| Expiry date | May 19, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The carbon-wax coating is removed from carbon paper by sequentially immersing the coated paper in hot aqueous baths, the paper being squeeze-dried prior to immersion in each bath after the first. Ultrasonic vibrations are applied to the first bath to mutually separate the individual pieces of the paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.