Process for lining container caps
US4198369A · kind A · utility
11Cited by
7References
9Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 15, 1979 |
| Grant date | Apr 15, 1980 |
| Priority date | — |
| Expiry date | Jan 15, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/0085
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for lining container caps, which comprises applying a dispersion in an aqueous medium of an olefin resin to the inner bottom surface of a cap shell, subjecting the aqueous dispersion applied to a first-step heat treatment at a temperature below the thermo-forming temperature of the olefin resin, and then subjecting it to a second-step heat treatment at a temperature not lower than the thermo-forming temperature of the resin but below the heat decomposition temperature of the resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.