Laser for forming bags from a web of material
US7214173B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2001 |
| Grant date | May 8, 2007 |
| Priority date | — |
| Expiry date | Dec 21, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24008
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A fastener includes first and second tracks. The first track includes a first profile, and the second track includes a second profile for interlocking with the first profile. The fastener extends between opposing ends. The first and second profiles at each of the opposing ends are sealed to each other using a laser. In one embodiment, the fastener is initially continuous and is subsequently divided into segments by simultaneously cutting and sealing the fastener at spaced target locations using the laser. The segments are associated with respective plastic bags. At each of the target locations, the laser directs a laser beam at the fastener such that the laser beam cuts through the first and second profiles and simultaneously seals the first and second profiles to each other on opposite sides of the cut. The seals on the opposite sides of the cut terminate respective ends of adjacent ones of the segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.