Collapsible bag with evacuation passageway and method for making the same
US5147071A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1991 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Apr 9, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S493/929
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A collapsible bag for use in containing and dispensing a liquid, such as in a bag-in-box arrangement, and a method for making the bag. Prior to sealing together two bag walls to form the bag, a one-piece spout and evacuation strip unit is attached to the outside surface of one bag wall and one or more openings are provided through the bag wall in liquid communication with a plurality of liquid channels in the strip. The two bag walls are then sealed together to form the bag and the evacuation strip provides liquid passageways for the liquid in the bag to flow to the spout to achieve complete withdrawal of the liquid from the bag as the bag collapses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.