Apparatus and method for making bag assembly
US8362396B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 2011 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | May 20, 2031 |
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 opposing die member defines a single die and 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 assembly. During operation, the perimeter-welding and tube-welding portions weld the bag assembly simultaneously, then the perimeter-welding portion of one of the opposing die members is moved relative to the tube welding portion of the die member to increase the distance between the perimeter-welding portions of the opposing die members. 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.