Defective web identification system and method
US11919220B2 · kind B2 · utility
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1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2022 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Apr 19, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7128
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Systems and methods of indicating to a line worker when there is a defective zipper profile extruded onto a generally flat plastic web while moving in a feed direction in a re-sealable container production line. The system includes a sensor for detecting the defective zipper profile and a web distortion device that actuates in response to the sensor detecting the defect. The web distortion device keeps the web bunched together while it spools onto a roll support device located downstream thereby making it readily apparent to a line worker that the bunched segment contains the defective segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.