Packaging machine
US4838847A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1988 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Mar 3, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B50/32
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A packaging machine for preparing sealed containers filled with contents each from a blank having a thermoplastic synthetic resin layer over each surface thereof. The container is recessed in the central portion of its bottom so as to seat stably. A bottom forming end portion of the blank fitted around a mandrel is folded flat and then pressed against the forward end surface of the mandrel by a press member with its press face to form the bottom of the container. The mandrel end surface defines a cavity for recessing the bottom central portion, and a projection complementary to the cavity is provided on the press face of the press member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.