US3900155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Package
Assignee: Tetra Pak AB
•
Filing: 1974-02-11
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Granted: 1975-08-19
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Expires: 1994-02-11
Abstract
Abstract A disposable container or package for fluent material, formed from a laminated web comprising a support layer and a heatsealable thermoplastic layer, has a pouring opening with a closure strip tightly closing the opening. That part of the strip which is in the region of said opening is recessed by thermoforming, so that the major portion of the recessed part of the strip extends past the inside edge of the opening, which strip portion is wider than is the opening.
Inventors
- 👤 Hans A Rausing
- 👤 Jan-Erik Olsen
- 👤 Jan Axel Ingemar Rauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:29
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/70; B65D5/708; Y; Y10; Y10T; Y10T428/00; Y10T428/15
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
213 words
A disposable package comprising a container body formed of a laminated material having a support layer and an outer layer of heat sealable thermoplastic material thereon and having a flat top panel provided with a pouring opening therein, a closure strip covering said opening, at least a portion of said closure strip being sealed to the outer layer of the top panel in the area surrounding said opening, that portion of said strip which covers said opening being recessed into said opening, said recessed portion extending into said container body beyond the inner surface of said top panel and having a surface parallel to the inner surface of said top panel and an area larger than that of said opening to releasably engage the periphery of said opening and secure the recessed portion of said strip within said opening, a portion of the closure strip remote from said opening being folded under through 180* and sealed to the outer layer of said top panel, said outer layer being scored beneath said closure strip between the pouring opening and the portion of said strip which is folded under to resist tearing, when said package is opened, of the outer layer where the folded portion of said closure strip is sealed to said outer layer.
Claim 2
Dependent Claim
213 words
A disposable package comprising a container body formed of a laminated material having a support layer and an outer layer of heat sealable thermoplastic material thereon and having a flat top panel provided with a pouring opening therein, a closure strip covering said opening, at least a portion of said closure strip being sealed to the outer layer of the top panel in the area surrounding said opening, that portion of said strip which covers said opening being recessed into said opening, said recessed portion extending into said container body beyond the inner surface of said top panel and having a surface parallel to the inner surface of said top panel and an area larger than that of said opening to releasably engage the periphery of said opening and secure the recessed portion of said strip within said opening, a portion of the closure strip remote from said opening being folded under through 180* and sealed to the outer layer of said top panel, said outer layer being scored beneath said closure strip between the pouring opening and the portion of said strip which is folded under to resist tearing, when said package is opened, of the outer layer where the folded portion of said closure strip is sealed to said outer layer.
Claim 3
Dependent Claim
31 words
A disposable package as defined in claim 1 wherein at least a part of said closure strip surrounding said opening is not sealed to the outer surface of said top panel.
Claim 4
Dependent Claim
30 words
A disposable package as claimed in claim 1 wherein the laminated material comprises a support layer of foamed plastic material and layers of homogeneous plastic material on both sides thereof.
Claim 5
Dependent Claim
26 words
A disposable package as claimed in claim 3 wherein said support layer is composed of foamed polystyrene and the outer layers are composed of homogeneous polystyrene.
Claim 6
Dependent Claim
16 words
A disposable package as claimed in claim 1 wherein said closure strip is composed of polystyrene.
References Cited (Backward Citations)
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Cited
US2153911A
Cited
US2309144A
Cited
US2784892A
Cited
US3213071A
Cited
US2983962A
Cited
US3039669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |