Process for forming a microwave popcorn package
US4942050A · kind A · utility
14Cited by
29References
7Claims
0Family size
Inventor
Key dates
| Filing date | Oct 27, 1989 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | Oct 27, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2581/3421
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A process for forming a flexible, generally tubular, three-surface, single-pleated, microwave-penetrable package for use in cooking popcorn. Two transverse seals and one lengthwise-extending seam seal the package. Venting means releases accumulated steam produced by the popping corn and the package maintains its expanded structure even after venting has commenced. A convenient means of opening the package is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.