Foil coating process
US3955016A · kind A · utility
3Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1974 |
| Grant date | May 4, 1976 |
| Priority date | — |
| Expiry date | Aug 12, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2255/26
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In a double-pass lamination and coating process, aluminum foil is laminated on one side with paper and then rolled for temporary storage before being coated on the other side with polyethylene. Contaminants from the paper impair the ability of aqueous solutions of chromium complex adhesion promoters to bond the polyethylene to the foil. A wash coat of polyvinyl alcohol before rolling eliminates this impairment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.