US4792069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pouring edge on packing containers
Assignee: Tetra Pak AB
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Filing: 1987-10-09
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Granted: 1988-12-20
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Expires: 2007-10-09
Abstract
Abstract Pouring edges in the form of projecting material strips are used on packing containers for e.g. liquid foodstuffs. The pouring edge is generally covered by a tear-off cover strip 6 which also serves as a closure for a pouring opening 7. In order to prevent the pouring edge strip 8 from being torn off or deformed at the removal of the cover strip 6, the same is given a z-folded form and is joined to the outside of the packing container in two sealing areas situated at a distance from each other, the doubled area located in between projecting from the packing container and guiding the out-flowing liquid.
Inventors
- 👤 Hans Nantin
- 👤 Ingemar Ohlsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:33
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/72; B65D5/02; B65D5/06; B65D5/064; B67; B67D; B67D3/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
262 words
A packing container of the type formed of a flexible packing material with an upper wall delimited by folding lines and provided with a pouring opening adjacent one of the folding lines, the packing container including an outer surface provided with a pouring edge assembly comprising: a pouring edge strip formed of a resilient material and including two opposing ends and at least one strip fold line intermediate the ends, the pouring edge strip being attached to the outer surface of the packing container at a position along a part of the folding line adjacent the pouring opening with one end of the strip being attached to the outer surface of the packing container between the pouring opening and the adjoining folding line and the opposing end of the strip being attached to the outer surface of the packing container below the adjoining folding line, the pouring edge strip being attached to the packing container only at the opposing ends of the pouring edge strip, the strip fold line of the pouring edge strip intermediate the ends defining a projecting pouring edge extending in the direction of the adjoining folding line; and a cover strip closing the opening and covering the pouring edge strip when the packing container is in an unopened condition, the part of the pouring edge strip intermediate the ends being under tension when the packing container is in the unopened condition to create a spreading force on the intermediate part to help force the projecting pouring edge into an outwardly projecting position when the cover strip is removed.
Claim 2
Dependent Claim
262 words
A packing container of the type formed of a flexible packing material with an upper wall delimited by folding lines and provided with a pouring opening adjacent one of the folding lines, the packing container including an outer surface provided with a pouring edge assembly comprising: a pouring edge strip formed of a resilient material and including two opposing ends and at least one strip fold line intermediate the ends, the pouring edge strip being attached to the outer surface of the packing container at a position along a part of the folding line adjacent the pouring opening with one end of the strip being attached to the outer surface of the packing container between the pouring opening and the adjoining folding line and the opposing end of the strip being attached to the outer surface of the packing container below the adjoining folding line, the pouring edge strip being attached to the packing container only at the opposing ends of the pouring edge strip, the strip fold line of the pouring edge strip intermediate the ends defining a projecting pouring edge extending in the direction of the adjoining folding line; and a cover strip closing the opening and covering the pouring edge strip when the packing container is in an unopened condition, the part of the pouring edge strip intermediate the ends being under tension when the packing container is in the unopened condition to create a spreading force on the intermediate part to help force the projecting pouring edge into an outwardly projecting position when the cover strip is removed.
Claim 3
Dependent Claim
33 words
A packing container in accordance with claim 1, wherein said pouring edge is folded down and extends along a side wall of the packing container when the container is in an unopened condition.
Claim 4
Dependent Claim
30 words
A packing container in accordance with claim 1, wherein said pouring edge extends mainly in a plane with the upper wall of the packing container when the container is opened.
Claim 5
Dependent Claim
58 words
A packing container in accordance with claim 1, wherein said pouring edge strip is attached to the cover strip as well as to the packing container by means of seals of different strength, the seal between the pouring edge strip and the cover strip being weaker than the seal betwen the pouring edge strip and the packing material.
Claim 6
Dependent Claim
32 words
A packing container in accordance with claim 1, wherein a side of the pouring edge facing towards the packing material consists of a material which can be heat-sealed to the packing material.
Claim 7
Dependent Claim
40 words
A packing container in accordance with claim 1, wherein the part of the pouring edge strip situated in between said ends is in the form of a folded strip which unfolds when the packing container is in an opened condition.
Claim 8
Dependent Claim
58 words
A packing container in accordance with claim 1, wherein prior to the conversion of the packing material to a packing container said pouring edge strip is in the form of a Z-folded strip having two projecting end parts both of which are attached to the packing material on either side of the folding line adjacent the pouring opening.
Claim 9
Dependent Claim
35 words
A packing container in accordance with claim 7, wherein prior to said conversion the packing material is in a plane condition and said pouring edge is folded in a direction away from the pouring opening.
Claim 10
Dependent Claim
35 words
A packing container in accordance with claim 7, wherein the Z-folded strip includes Z-fold strip portions that unfold when the packing container is in an opened condition so as to form the projecting pouring edge.
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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) | 1991-12-20 | 1992-06-20 | 1992-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-20 | 1996-06-20 | 1996-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-20 | 2000-06-20 | 2000-12-20 | $7700.00 | Window Closed / Lapsed |