B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
117/153
B32B 27/08 (2006.01) B05D 1/38 (2006.01) B05D 7/04 (2006.01) C08J 7/04 (2006.01)
Patent
CA 1159322
Abstract of the Disclosure A process for coating nylon film with polyvinyl- idene chloride is disclosed, comprising primer-coating the nylon film with an aqueous dispersion of a vinylidene chlo- ride copolymer having a crystallinity index of less than 1.15 after 30 days storage at 20°C and between about 1.05 and 1.20 when stored for 48 hours at 40°C: drying the primer coated film; coating the primer coated film with an aqueous disper- sion of a vinylidene chloride copolymer capable of developing crystallinity to a level sufficient that the crystalline vinylidene chloride copolymer so formed resists attack by an organic solvent, as measured by the Solvent Haze Test; and drying the coated film. During primer coating and the first drying step the film is kept under sufficient tension to pre- vent curling of the film. The coated film may be laminated to polyethylene to provide a laminate useful for packaging of processed foods. DC-0141A
391235
Kershaw Bernard J.
Lang Theodore J.
Du Pont Canada Inc.
Mccallum Brooks & Co.
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