Patent · US Active

Food bag release valve

US7399263B2 · kind B2 · utility

15Cited by

22References

14Claims

0Family size

Assignee

Avery Dennison Corporation · US

Inventors

William G. Hartman · North Royalton, US
Richard L. Sandt · Brunswick, US

Key dates

Filing date	Jun 6, 2007
Grant date	Jul 15, 2008
Priority date	—
Expiry date	Jun 6, 2027

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB31B70/85
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

A method of making a plurality of flexible containers (12/112/212) comprising the steps of manufacturing a plurality of bag structures (13/113/213), separately manufacturing a plurality of valves (10/110/210), aligning the valves (10/110/210) with openings (24/124/224) in the bag structures (13/113/213), and securing the aligned valves (10/110/210) to the bag structures (13/113/213). Each valve (10/110/210) comprises a vent layer (30/130/230) which is pervious with respect to expected gasses and a sealed passageway is formed between the vent layer (30/130/230) and the container (12/112/212) when the valve (10/110/210) is secured to the bag structure (13/113/213).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.