Packaging machine
US5031380A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1989 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Dec 19, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2705/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A packaging machine for use with a paper-base laminate serving as a packaging material and having a thermoplastic synthetic resin layer on each surface of a paper layer comprises a container forming unit for forming a content-filled tube into baglike containers after the web is made into a tube and contents are filled thereinto. The unit has jaws for clamping the content-filled tube at regular lengthwise intervals each corresponding to one container to heat-seal the tube over a required width and cut the tube at the midportion of the seal width, and the jaws are provided with a high-frequency coil for heat sealing. The machine further has a unit for affixing a tape of aluminum foil for high-frequency induction heating to the web at the portion thereof to be heat-sealed before the web is made into the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.