Plastic bag making apparatus
US9604426B2 · kind B2 · utility
2Cited by
7References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2011 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Jul 2, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2241/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Upon cutting a corner of a plastic bag, the cut-out portion is prevented from attaching to the plastic bag. A plastic film (1) is trimmed by a trimming cutter (7) to form a selvage (8). Every time that the plastic film (1) is intermittently fed, the trimming cutter (7) is moved by a trimming cutter moving mechanism, so that a corner of the plastic bag is cut by the trimming cutter (7) and the cut-out portion (11) is continued from the selvage (8).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.