Apparatus for sealing bag bottom
US7172546B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 2004 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Mar 24, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2160/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for sealing the bottom of a bag includes a frame through which a bag to be folded is longitudinally advanced. The apparatus includes a pair of cooperating grippers carried by a reciprocably movable gripper carrier. The grippers are operated to opposite edges of the bag, and laterally tension the bag. The apparatus includes a vertically reciprocable fold plate which then is moved downwardly to engage and downwardly fold a leading end portion of the bag. Adhesive is applied thereto, and the bag advanced, by movement of the gripper carrier, for advancement of the folded bag to at least one pair of intermittently-driven nip rollers. The grippers are released, and the nip rollers thereafter operated to compress and complete sealing of the bag bottom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.