Substrate for composite printing and relief plate
US4060032A · kind A · utility
24Cited by
11References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 27, 1976 |
| Grant date | Nov 29, 1977 |
| Priority date | — |
| Expiry date | Oct 27, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A composite structure for making printing plates and other surfaces in relief is improved by reducing the density of a polymer substrate thereby increasing the amount of material removed per unit of time by a given total amount of energy. The density of the polymer substrate is reduced by making it cellular or poriferous using expandable micro capsules made of thermoplastic shell and a nucleus of a liquified blowing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.