Apparatus for transversely welding plastic webs
US6338376B1 · kind B1 · utility
1Cited by
10References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 7, 2000 |
| Grant date | Jan 15, 2002 |
| Priority date | — |
| Expiry date | Mar 7, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1737
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A device for the transverse welding of plastic webs to produce bags and the like has a welding beam with a rounded edge turned toward the web juxtaposed with a welding roller which can have a plurality of rings mounted thereon to advance the weld seam length or transverse the welding width the rings can be coated with polytetrafluoroethylene and adjustment of the device to greater or reduced welding widths is accomplished by adding or subtracting the rings which are contiguous with one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.