US4664263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Divisible tape tab for opening a container
Assignee: 3M Co
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Filing: 1985-06-24
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Granted: 1987-05-12
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Expires: 2005-06-24
Abstract
Abstract A tab formed on a length of pressure-sensitive adhesive tape and having a cut in the tab permits tearing of the tab and tape lengthwise to open a hole in a flexible packaging material to expose the contents. The tape is placed over an opening formed in the material and the tearing of the tape tab by separating the two portions on either side of the cut will cause a tearing of the tape longitudinally causing a single tear at the opening to propagate in opposite directions from the opening.
Inventors
- 👤 Jeffrey O. Emslander
- 👤 Curtis L. Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:13
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; B65D81/3453; B65D77/00; B65D77/22; B65D77/30; B65D2205/00; B65D2577/00; B65D2577/10; B65D2577/20; B65D2577/2041; B65D2577/2058; B65D2577/2075; B65D2577/2091; B65D2581/00; B65D2581/34; B65D2581/3401; B65D2581/3402; B65D2581/3421
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
183 words
An easy open package for enclosing a product in a sealed flexible container, said package comprising a flexible portion having a pair of openings extending through said portion and positioned generally centrally thereof, a length of tape having its opposite ends adhered to the flexible material with the ends disposed, one covering one of the openings and the other covering the other of said openings, said tape comprising a backing having a coating of adhesive on one surface of the backing, said adhesive adhering the ends of the tape to the material surrounding the openings and the central portion of said tape being folded upon itself to define a tab with a free edge, said edge having a discontinuity to permit separation of the tab at the discontinuity to afford a separation of the tab and a tearing of the tape generally centrally along the length of the tape and being along a line generally aligned with the openings in the material whereby tearing of tape lengthwise causes a tearing of the material in opposite directions at said openings to open the container.
Claim 2
Dependent Claim
183 words
An easy open package for enclosing a product in a sealed flexible container, said package comprising a flexible portion having a pair of openings extending through said portion and positioned generally centrally thereof, a length of tape having its opposite ends adhered to the flexible material with the ends disposed, one covering one of the openings and the other covering the other of said openings, said tape comprising a backing having a coating of adhesive on one surface of the backing, said adhesive adhering the ends of the tape to the material surrounding the openings and the central portion of said tape being folded upon itself to define a tab with a free edge, said edge having a discontinuity to permit separation of the tab at the discontinuity to afford a separation of the tab and a tearing of the tape generally centrally along the length of the tape and being along a line generally aligned with the openings in the material whereby tearing of tape lengthwise causes a tearing of the material in opposite directions at said openings to open the container.
Claim 3
Dependent Claim
49 words
An easy open package according to claim 1 wherein a piece of web material is adhered at opposite surfaces to the adhesive at the central portion of said tape between the adhesive coated surfaces of the tape forming the tab such that the tab may be provided with indicia.
Claim 4
Dependent Claim
41 words
An easy open package according to claim 1 wherein said free edge of the tab is defined by severing said folded portion of said tape adjacent the fold to define a free edge having a series of notches defining said discontinuity.
Claim 5
Dependent Claim
59 words
An easy open package according to claim 1 wherein said length of tape is formed with an opening in the central portion thereof through which is exposed a portion of adhesive on an adjacent portion which defines the tab whereby the tab may be folded and the exposed portion of adhesive will hold the tab in a folded position.
Claim 6
Dependent Claim
33 words
An easy open package according to claim 1 wherein said flexible packaging material comprises polyvinylidene chloride, cellophane, thin metal foil, polypropylene, low density polyethylene, polycarbonate, polyamide, acetate, polyethylene terephthalate, paper or laminates thereof.
Claim 7
Dependent Claim
18 words
An easy open package according to claim 1 wherein said tape backing is a uniaxially oriented thermoplastic film.
Claim 8
Dependent Claim
22 words
An easy open package according to claim 1 wherein said backing contains fibers oriented along the length of a piece of tape.
Claim 9
Dependent Claim
179 words
An easy open package for enclosing a product in a sealed flexible container, said package comprising a flexible portion having an opening extending through said portion, a length of tape having opposite ends adhered to the flexible material with an intermediate portion of the tape folded upon itself to define a tab with a free edge, at least one end of the tape being disposed over the opening, said tape comprising a backing having a coating of adhesive on one surface of the backing, said adhesive adhering the ends of the tape to the flexible material, said edge of said tab having a discontinuity to permit separation of the tab at the discontinuity to afford a separation of the tab and a tearing of the tape generally centrally along the length of the tape and being along a line generally aligned with the opening in the flexible material whereby separation of the tab causes a tearing of the tape lengthwise and a tear in the flexible material to propagate in opposite directions from said opening to open the container.
Claim 10
Dependent Claim
179 words
An easy open package for enclosing a product in a sealed flexible container, said package comprising a flexible portion having an opening extending through said portion, a length of tape having opposite ends adhered to the flexible material with an intermediate portion of the tape folded upon itself to define a tab with a free edge, at least one end of the tape being disposed over the opening, said tape comprising a backing having a coating of adhesive on one surface of the backing, said adhesive adhering the ends of the tape to the flexible material, said edge of said tab having a discontinuity to permit separation of the tab at the discontinuity to afford a separation of the tab and a tearing of the tape generally centrally along the length of the tape and being along a line generally aligned with the opening in the flexible material whereby separation of the tab causes a tearing of the tape lengthwise and a tear in the flexible material to propagate in opposite directions from said opening to open the container.
Claim 11
Dependent Claim
30 words
An easy open package according to claim 8 wherein the discontinuity formed in the tab is defined by a notch formed in the free edge of said length of tape.
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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) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |