Press applied susceptor for controlled microwave heating
US4914266A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1989 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Mar 22, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1303
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Paperboard packaging material is disclosed for use in the manufacture of cartons for heating and browning food in a microwave oven. In accordance with the present invention, a pattern of microwave susceptor is printed on paperboard packaging material using a susceptor-ink composition in the areas where the food is to be browned. The susceptor-ink composition comprises an ink vehicle into which there is incorporated a conductive carbon material such as graphite or carbon black as the susceptor material. The preferred printing process is by gravure, and the printed susceptor is overcoated with an FDA approved food contacting coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.