US5711751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetic seal for a plastic bag
Assignee: Individual
•
Filing: 1995-07-05
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Granted: 1998-01-27
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Expires: 2015-07-05
Abstract
Abstract A plastic bag manufacturing method to produce bags with a removable release strip in covering relation over an adhesive deposit adjacent an upper edge of the bag rear panel, in which the height of the release strip is increased to provide continuity along the length thereof to enable urging the strip, as required during the bag manufacturing process, in a machine direction, and the lower release strip portion is notched at locations coinciding with the bag side edges so that these bag side edges are fused for their entire lengths with no inhibiting of this fusing process by the release strip being in an interposed position between the overlying upper edges of the bag front and rear panels.
Inventors
- 👤 Hikmet Harmanoglu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:11
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B65D33/18; B65D33/20; B31; B31B; B31B70/00; B31B70/60; B31B70/64; B31B70/74; B31B70/81; Y; Y10; Y10S; Y10S493/00; Y10S493/916; Y10S493/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
276 words
A method of successively forming in side by side relation plural plastic bags each having a widthwise oriented adhesive deposit along a top edge of each bag with a release strip in covering relation thereover and in an interposed position between overlying upper edges of a bag front panel and a bag rear panel bounding an opening into said bag wherein removal of said release strip is adapted to provide an adhesive closure for said bag opening, said method of forming said plastic bags comprising the steps of preparing said release strip with a height sized in said interposed position thereof between upper edges of said bag front and rear panels to have an upper length portion thereof extending outwardly in the plane of said bag front and rear panels, notching a downwardly facing rectangular shape having spaced apart vertically oriented side edges and a connecting horizontally oriented upper edge in a lower portion of said release strip at spaced locations therealong adapted to coincide with side edges of said successive plastic bags, depositing an adhesive on successive bag rear panels, positioning said notched release strip in covering relation over said adhesive deposit with said upper edge in a clearance position above said upper edges of said front and rear panels, folding successive bag front panels over said bag rear panels and against an uncovered adhesive deposit in each said release strip notch, and heat sealing at transverse spaced intervals coinciding with said release strip notches said front and rear panels to each other to form side edges of said successive plastic bags, whereby each bag has heat sealed side edges for the entire length thereof.
Claim 2
Independent Claim
276 words
A method of successively forming in side by side relation plural plastic bags each having a widthwise oriented adhesive deposit along a top edge of each bag with a release strip in covering relation thereover and in an interposed position between overlying upper edges of a bag front panel and a bag rear panel bounding an opening into said bag wherein removal of said release strip is adapted to provide an adhesive closure for said bag opening, said method of forming said plastic bags comprising the steps of preparing said release strip with a height sized in said interposed position thereof between upper edges of said bag front and rear panels to have an upper length portion thereof extending outwardly in the plane of said bag front and rear panels, notching a downwardly facing rectangular shape having spaced apart vertically oriented side edges and a connecting horizontally oriented upper edge in a lower portion of said release strip at spaced locations therealong adapted to coincide with side edges of said successive plastic bags, depositing an adhesive on successive bag rear panels, positioning said notched release strip in covering relation over said adhesive deposit with said upper edge in a clearance position above said upper edges of said front and rear panels, folding successive bag front panels over said bag rear panels and against an uncovered adhesive deposit in each said release strip notch, and heat sealing at transverse spaced intervals coinciding with said release strip notches said front and rear panels to each other to form side edges of said successive plastic bags, whereby each bag has heat sealed side edges for the entire length thereof.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-01-26 | 2001-07-28 | 2002-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-01-26 | 2005-07-28 | 2006-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-01-26 | 2009-07-28 | 2010-01-27 | $7700.00 | Window Closed / Lapsed |