Method and apparatus for production of laminated metal sheet
US5992493A · kind A · utility
3Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1998 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Apr 30, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1741
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for a production of a laminated metal sheet which can reduce the ratio of pinholes being caused in a synthetic resin film (the incidence of pinholes) upon deep draw forming of the laminated metal sheet involves superimposing the heated metal sheet on the synthetic resin film unwound from a film roll, passing the heated metal sheet and the synthetic resin film through a pair of laminating rolls to laminate the two together, the laminating process being carried out in a laminating chamber in which the concentration of fine particles having a mean particle diameter exceeding 3 .mu.m is kept below 100 pieces/ft.sup.3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.