Batch method and apparatus for heating envelope edges to separate the envelope panels
US4356684A · kind A · utility
0Cited by
17References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1980 |
| Grant date | Nov 2, 1982 |
| Priority date | — |
| Expiry date | Mar 31, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S83/912
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method and apparatus are disclosed for opening envelopes by applying an envelope material degrading chemical to the edges of the envelopes. The edges are contacted with a planar heating member and the envelopes are bent inwardly so that the edges are laterally displaced out of the planes defined by the major portions of the associated envelopes to promote more effective contact of the envelope edges with the heated member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.