Process for producing laminated film and laminated sheet
US5913999A · kind A · utility
10Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1997 |
| Grant date | Jun 22, 1999 |
| Priority date | — |
| Expiry date | Jan 13, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2035/0877
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing an extrusion laminated film or sheet comprising a plastic substrate and a resin for extrusion laminating selected from the group consisting of polyethylene resins, polypropylene resins, ethylene-vinylester copolymer resins and ethylene-(metha)acrylate copolymer resins, comprising (A) a surface oxidizing step, (B) an ozone-treating step and (C) a pressurized laminating step as specified using no chemical primer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.