Method of manufacturing antistatic polyester film
US5248522A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1991 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | Sep 3, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2427/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing a polyester film is disclosed which comprises a polyester film before completion of orienting crystalization and, provided thereon, a sublayer comprising a copolymer containing 70 to 99.5 wt % of vinylidene chloride, and an antistatic layer comprising an ionic polymer, in that order. A coating solution is coated on the polyester film to form the sublayer with a dry thickness of 1 to 20 g/m.sup.2. The total solid content of the coating solution is not less than 4 wt %, and the coating solution contains a latex of the copolymer with an average particle size of 0.05 to 0.3 .mu.m. Heat is applied at a temperature not less than 30.degree. higher than the melting point of the copolymer, and the antistatic layer is formed on the sublayer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.