Method of applying coating
US4525377A · kind A · utility
53Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1983 |
| Grant date | Jun 25, 1985 |
| Priority date | — |
| Expiry date | Jan 17, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2701/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for applying a PVDC polymer coating to the outside of a PET parison includes deionizing the surface of the parison, dipping the parison into an aqueous PVDC dispersion, withdrawing the parison at a controlled rate to prevent slubbing of the polymer coating, and drying the coating by exposure to desiccated air. The method dramatically reduces the energy requirements for coating operations yet produces a finished biaxially oriented PET container having superior gas barrier characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.