Method for closure heating
US4981627A · kind A · utility
3Cited by
10References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Aug 4, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/46
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and appaatus for curing a gasket material on a cap, the apparatus having a microwave transmitter, associated wavegide and a device for moving multiple caps through the waveguide. A plastic material is applied to the cap so as to form a gasket. The cap is then moved through the waveguide where microwave energy is absorbed by plastic material. The plastic material then heats from room temperature to a predetermined curing temperature in the waveguide. The cap is then removed and allowed to cool back to room temperature so that the gasket material will harden.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.