Heating apparatus for making a continuous longitudinal seam weld on a laminated packaging material web
US5767491A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Jan 11, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S53/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The disclosure relates to an apparatus for making a continuous welding joint. A material web (20) formed into a tube (8) is sealed along the longitudinal joint seam in that a joint heater (1), preferably an induction heater, is disposed in parallel along the longitudinal joint seam. The sealing operation takes place continuously in a point (18) where a compression device (2) consisting of a pressure roller (9) and a counter pressure roller (10) is provided. The compression device (2) is interconnected together with the joint heater (1), to form a moving unit which may move vertically up and down in relation to the sealing point (18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.