Automatic ventilating system for plastic bags

Details Automatic ventilating system for plastic bags Automatic ventilating system for plastic bags

1999-02-25

2000-09-05

Garbe, Stephen P.

Flexible bags

With venting or ventilation means

Opening in bag material

383 10, 383118, 428136, B65D 3301

Patent

active

061132691

ABSTRACT:
Ventilation slits are placed in a plastic bag wall for opening in response to tension passing through the bag wall as the bag is carried. A conventional bag has a front bag wall, with the front bag wall having a top, a bottom, and two parallel side edges. The rear bag wall is of identical construction. The bag is conventionally sealed at the sides and bottom and typically carried from the top. The bag is improved by providing at least one bag wall with a plurality of vent apertures. In the preferred embodiment, each vent aperture has a first slit and a second slit with the slits inclined both to one another and with respect to the edges of the bag wall. Preferably, the vent apertures defined by the inclined slits overlying one another in parallel spaced apart relation. When the plastic bag is loaded at the bottom and carried from the top, stress in the bag wall or passes around the slits, causing the slits to open as vent apertures responsive to the stress. While inclined slits are preferred, embodiments are shown with an array of horizontally disposed slits for the ventilation, these slits preferably being in rows and columns.

REFERENCES:
patent: Re33264 (1990-07-01), Baxley
patent: Re34324 (1993-07-01), Haenni
patent: D287572 (1987-01-01), Dancy
patent: D288779 (1987-03-01), Pilon
patent: D307555 (1990-05-01), Haenni
patent: D308170 (1990-05-01), Wilfong
patent: D323619 (1992-02-01), Wilfong
patent: D325311 (1992-04-01), Mygind
patent: D396636 (1998-08-01), Wilfong
patent: 3399822 (1968-09-01), Kugler
patent: 3495764 (1970-02-01), Crane
patent: 3546327 (1970-12-01), Ruda
patent: 3730076 (1973-05-01), Levin
patent: 4216899 (1980-08-01), Kamp
patent: 4480750 (1984-11-01), Dancy
patent: 4529090 (1985-07-01), Pilon
patent: 4676378 (1987-06-01), Baxley
patent: 4696403 (1987-09-01), Hoover
patent: 4786275 (1988-11-01), Hoover
patent: 4793539 (1988-12-01), Haenni
patent: 4807754 (1989-02-01), Rowe
patent: 4819899 (1989-04-01), Weil
patent: 4849090 (1989-07-01), Case
patent: 4872766 (1989-10-01), Dancy
patent: 4911560 (1990-03-01), Hoover
patent: 4923436 (1990-05-01), Gelbard
patent: 4925512 (1990-05-01), Briand
patent: 4930385 (1990-06-01), Wilfong
patent: 4953664 (1990-09-01), Vrooman
patent: 4978231 (1990-12-01), Ling et al.
patent: 4981216 (1991-01-01), Wilfong
patent: 4995860 (1991-02-01), Wilfong
patent: 5020750 (1991-06-01), Vrooman
patent: 5125604 (1992-06-01), Vrooman
patent: 5207367 (1993-05-01), Dunn
patent: 5207368 (1993-05-01), Wilfong
patent: 5335788 (1994-08-01), Beasley
patent: 5362152 (1994-11-01), Fletcher et al.
patent: 5562580 (1996-10-01), Beasley
patent: 5667173 (1997-09-01), Wilfong
patent: 5845779 (1998-12-01), Wilfong
patent: 5881882 (1999-03-01), Fletcher

Affiliated with

Also associated with

Rating

Automatic ventilating system for plastic bags does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic ventilating system for plastic bags, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic ventilating system for plastic bags will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2205671