Queue-based bag forming system and method
US7115086B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 2004 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Sep 2, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S493/919
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of forming a series of bags for bulky articles from rolled thermoplastic film and padding element includes arranging a linear, longitudinally traveling queue of layers of film and padding element according to a set of desired bag dimensions and characteristics and controlling the advancement of the queue to make padding element and seal cuts to form the bags. The invention also includes a system for fabricating bags substantially in the manner identified in the method of the present invention, as well as a method of forming seal cuts in which an envelope is first clamped, then sealed and cut by heat and pressure, then allowed to cool before being released.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.