Wrapping machines
US5046258A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1989 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Feb 2, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B11/12
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A wrapping machine, particularly for wrapping cigarette packets in wrapper film, includes a series of endless band conveyors (148, 152, 156, 166, 170) carrying pushers (150, 154, 158, 172) for moving successive packets (191) along a straight wrapping line. One of the pushers (158) is heated to seal a wrapper seam. Opposed heated band conveyors (166) simultaneously seal end folds of the wrapper. Packets are gripped between opposed conveyors (145, 148) immediately after intercepting a wrapper (100). Partially-wrapped packets are arranged to slide relative to surfaces (149, 153, 157, 180) to attain wrap tightness. Successive conveyors (e.g. 156, 170) are independently driven to allow phasing of the conveyors to vary the position at which packets are transferred between them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.