Corona treatment of antifog film laminates
US5520764A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1995 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Apr 7, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laminate comprises a first substrate including a first layer of a blend of a polyolefin and an antifogging agent, and a bonding layer of polyolefin, preferably an ethylene unsaturated ester copolymer or low density polyethylene; a second substrate bonded to the bonding layer of the first substrate and comprising polyester or nylon; and a conventional adhesive between the first and second substrates; the bonding layer pre-treated by corona discharge before wind-up, and again treated by corona discharge before lamination. The laminates of the present invention exhibit much improved bond strength compared with conventional laminates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.