Patent US3883068A successfully refreshed from Google Patents.
US3883068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moisture barrier package formed from laminated blank
Assignee: THIELE ENGINEERING Co
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Filing: 1973-04-03
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Granted: 1975-05-13
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Expires: 1993-04-03
Abstract
Abstract Laminated blanks for forming moisture-resistant packages are produced from a substrate, such as cardboard. A continuous web of substrate is perforated and fold lines formed. Perforated regions are stripped therefrom prior to laminating with moistureresistant heat-sealable sheeting using a heat-weakenable laminating material. Thereafter, a multitude of rows of individual blanks are profiled by die-cutting the laminated web. The blanks have unsupported sheeting regions disposed along an edge portion of the substrate which provide membranes or webs that are adapted for sealing to another portion of the laminated sheeting to form a continuous barrier that may be used to prevent wicking in an erected package.
Inventors
- 👤 Stanley Milton Silver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:50
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B65; B65D; B65D5/00; B65D5/42; B65D5/56; B32B27/32; B32B7/00; B32B7/04; B32B7/12; B32B2307/00; B32B2307/30; B32B2307/31; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2439/00; Y; Y10; Y10S; Y10S229/00; Y10S229/933; Y10S229/941
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
232 words
A moisture barrier package formed from a single blank comprising a lamination of a fibreboard substrate and heat-sealable moisture-resistant sheeting laminated together by a heat-weakenable laminating material, said blank having parallel fold lines defining two pairs of opposed body walls plus a side-seam flap, one lateral edge portion of said sheeting which forms the body wall to which said side-seam flap attaches constituting a web unsupported by said substrate, said package having an over-all exterior covering constituted by said sheeting and having a side seam, a zone of which is formed by a heat-sealed bond between said unsupported sheeting portion and the underlying heat-sealable sheeting surface of said flap, said package also having a top closure including (a) an inner closure flap hinged to a front body wall which flap has been delaminated from its external heat-sealable sheeting, (b) an opposed sheeting closure panel which is hinged to a rear body wall and which is unsupported by substrate, and (c) two gussets on each side edge of said opposed closure panel which connect it to the upper edges of said remaining opposed pair of body walls, one gusset on each side being unsupported by said substrate and the other being supported, said gussets overlying said inner closure flap and being respectively heat-sealed together and to said unsupported closure panel, said delaminated sheeting flap overlying said opposed closure panel and being heat-sealed thereto.
Claim 2
Dependent Claim
232 words
A moisture barrier package formed from a single blank comprising a lamination of a fibreboard substrate and heat-sealable moisture-resistant sheeting laminated together by a heat-weakenable laminating material, said blank having parallel fold lines defining two pairs of opposed body walls plus a side-seam flap, one lateral edge portion of said sheeting which forms the body wall to which said side-seam flap attaches constituting a web unsupported by said substrate, said package having an over-all exterior covering constituted by said sheeting and having a side seam, a zone of which is formed by a heat-sealed bond between said unsupported sheeting portion and the underlying heat-sealable sheeting surface of said flap, said package also having a top closure including (a) an inner closure flap hinged to a front body wall which flap has been delaminated from its external heat-sealable sheeting, (b) an opposed sheeting closure panel which is hinged to a rear body wall and which is unsupported by substrate, and (c) two gussets on each side edge of said opposed closure panel which connect it to the upper edges of said remaining opposed pair of body walls, one gusset on each side being unsupported by said substrate and the other being supported, said gussets overlying said inner closure flap and being respectively heat-sealed together and to said unsupported closure panel, said delaminated sheeting flap overlying said opposed closure panel and being heat-sealed thereto.
Claim 3
Dependent Claim
30 words
The package of claim 1 wherein a portion of said side-seam flap is secured by adhesive to said body wall at a location adjacent said unsupported lateral edge portion thereof.
Claim 4
Dependent Claim
227 words
A top-loading package in the form of a tray and a hinged cover having a moisture-barrier interior lining, which package is formed from a single blank comprising a lamination of a unitary fibreboard substrate and a heat-sealable moisture-resistant sheeting laminated together by a heat-weakenable laminating material, the shape of said substrate being dissimilar to the shape of said sheeting so that selected peripheral web portions of said sheeting are unsupported by said substrate, said tray having four side walls connected to one another by generally triangular corner panels hinged respectively to the edge of one side wall, said blank being formed with a further triangular panel hinged to each said first-mentioned triangular panel and with an unsupported sheeting web portion of generally triangular shape joining each said further triangular panel to its adjacent sidewall, said blank being folded so that said unsupported web panel is disposed between said further triangular panel and the outer surface of the adjacent sidewall and being heat-sealed to both to provide a sealed corner, three of said sidewalls having sealing flaps hinged to the upper edges thereof and said cover including three cooperating sealing panels hinged thereto, said sealing flaps and panels being heat-sealed to one another to completely close said package interior lining, and the substrate of said cover and its hinged sealing panels being delaminated from the sheeting portion thereof.
Claim 5
Dependent Claim
227 words
A top-loading package in the form of a tray and a hinged cover having a moisture-barrier interior lining, which package is formed from a single blank comprising a lamination of a unitary fibreboard substrate and a heat-sealable moisture-resistant sheeting laminated together by a heat-weakenable laminating material, the shape of said substrate being dissimilar to the shape of said sheeting so that selected peripheral web portions of said sheeting are unsupported by said substrate, said tray having four side walls connected to one another by generally triangular corner panels hinged respectively to the edge of one side wall, said blank being formed with a further triangular panel hinged to each said first-mentioned triangular panel and with an unsupported sheeting web portion of generally triangular shape joining each said further triangular panel to its adjacent sidewall, said blank being folded so that said unsupported web panel is disposed between said further triangular panel and the outer surface of the adjacent sidewall and being heat-sealed to both to provide a sealed corner, three of said sidewalls having sealing flaps hinged to the upper edges thereof and said cover including three cooperating sealing panels hinged thereto, said sealing flaps and panels being heat-sealed to one another to completely close said package interior lining, and the substrate of said cover and its hinged sealing panels being delaminated from the sheeting portion thereof.
Claim 6
Dependent Claim
49 words
A top-loading package in accordance with claim 3 wherein small panels are hinged to the upper edges of each of said first-mentioned triangular panels and wherein said cover is formed and proportioned to heat-seal with said small panels at the time said cooperating sealing panels and flaps are heat-sealed.
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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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |