Apparatus and method for making bag assembly
US7964829B2 · kind B2 · utility
5Cited by
61References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2006 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Feb 24, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7148
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for forming a bag assembly includes opposing die members. Each die member has a perimeter-welding portion for forming a perimeter-weld of the bag assembly and a tube-welding portion for forming a tube-weld of the bag. During operation, first the perimeter-welding and tube-welding portions weld the bag assembly simultaneously, then the perimeter-welding portions are moved to increase the distance between them. When the perimeter-welding portions are moved apart, welding by the perimeter-welding portions is generally suspended while welding by the tube-welding portions may continue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.