Matrixing process for the manufacture of molded records
US4400245A · kind A · utility
1Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1981 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | Nov 30, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D1/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process improvement is disclosed for use in the matrixing process employed in the manufacture of molded records. In accordance with the disclosure, a narrow texturized band is provided in either the outer or inner unrecorded areas of a matrix or in both areas of a matrix, so that when a replica is electroformed on the matrix the texturized bands will provide sufficient additional grip of the replica to the matrix to prevent premature separation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.