Bag making and filling method using double film
US7325383B2 · kind B2 · utility
1Cited by
17References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2003 |
| Grant date | Feb 5, 2008 |
| Priority date | — |
| Expiry date | May 19, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B2220/18
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tubular film is flattened to form a continuous two-ply film in which the two side edges are continuously connected in the longitudinal direction. This two-ply film is curved into a tubular form, the two side edges are overlapped, and a vertical seal portion is formed in the overlapping portion to form a tube body, and the tube body is filled with a product. The tube body that has been filled with product is horizontally sealed, and the horizontal seal portion that has been thus formed is cut to produce a two-ply bag package.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.