US3577699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cartoning
Assignee: THIELE ENGINEERING Co
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Filing: 1969-09-04
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Granted: 1971-05-04
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Expires: 1989-09-04
Abstract
Abstract A package is described wherein the contents are hermetically sealed in an inner lining of moisture resistant flexible sheeting material, which is wholly contained in a closed and sealed container of a substantially rigid material, such as boxboard, and yet the flexible sheeting initially constituted a layer sealed over the entire area of the board by means of a thermoplastic coating such as a microcrystalline wax. The lining remains sealed over a substantial area of the board after completion of the package. The package is rectangular and formed from a single unitary blank, the ends of the container being closed by flaps that have been severed from one another and, over the major portion of their area, detached from the inner lining by the heating of the thermoplastic coating which is then absorbed in the boxboard material. The inner lining is sealed at each end by means of fin seals with web-gusseted ends. These are created by inwardly folding the ends of the container before the flaps are severed from one another, this initial folding involving gusset folding and the subsequent folding, after the severance of the flaps, being that of ordinary dust flaps and cover flaps. The fin seals are heat sealed when the heat is applied to strip the neighboring boxboard from the flexible material.
Inventors
- 👤 Stanley Milton Silver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:21
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/56; B65D5/563
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
178 words
The method of permanently closing the end of a rectangular tubular package formed of a board material and having an inner sheetinG by taking a laminated material formed of a board support to which is laminated the sheeting having a heat-adhesive surface and the sheeting being attached to the support by an adhesive coating having the potential to permit the sheeting to strip from the support by the application of local heat, folding the blank to bring together face-to-face two areas thereof for joining the sheeting surfaces to form the required lining and applying sufficient heat both to effect such joining and to strip the sheet-lining, characterized in that joined scored panels at the end of the package are first temporarily closed by folding to form web-gussets having a fin extension, the scored panels being composed entirely of the laminated board, then by applying heat to the end panels the inner sheet-lining is heat-sealed and also released from the board which is then unfolded, whereafter the stripped portions of the board-support are refolded to complete the end closure.
Claim 2
Independent Claim
178 words
The method of permanently closing the end of a rectangular tubular package formed of a board material and having an inner sheetinG by taking a laminated material formed of a board support to which is laminated the sheeting having a heat-adhesive surface and the sheeting being attached to the support by an adhesive coating having the potential to permit the sheeting to strip from the support by the application of local heat, folding the blank to bring together face-to-face two areas thereof for joining the sheeting surfaces to form the required lining and applying sufficient heat both to effect such joining and to strip the sheet-lining, characterized in that joined scored panels at the end of the package are first temporarily closed by folding to form web-gussets having a fin extension, the scored panels being composed entirely of the laminated board, then by applying heat to the end panels the inner sheet-lining is heat-sealed and also released from the board which is then unfolded, whereafter the stripped portions of the board-support are refolded to complete the end closure.
Claim 3
Dependent Claim
28 words
The method according to claim 1, characterized in that, before the final closure, the stripped and unfolded portions of the board support are cut to form rectangular flaps.
Claim 4
Dependent Claim
20 words
A method according to claim 1, in which both ends of the package are permanently closed in the same way.
Claim 5
Dependent Claim
126 words
A method according to claim 1, characterized in that the package is formed with a side seam that continues into the web-gussets on one side, by bringing the sheeting on a sealing flap into contact face-to-face with the sheet-lining on a side panel, heating the contacting layers of sheeting so as to join them along areas adjacent the free areas of the sealing flap and side panel and to enable the sheeting to be stripped from the board support of the side panel, stripping the sheeting from the said board support, applying adhesive to the stripped portion of the board support and folding the stripped portion of the board support so that it overlaps and adheres to the outer, board support, surface of the sealing flap.
Claim 6
Independent Claim
165 words
The method of forming a package composed of a substantially rigid material such as boxboard to the whole of one face of which a moisture-resistant flexible sheeting material has been adhered by means of a thermoplastic coating such as microcrystalline wax, which comprises the steps of forming the rigid material into rectangular tubular form with the sheeting material inside, closing each end of the tubular form filling before completing the closing of the second end, each closing procedure comprising forming web-gussets on each side and a fin-extension extending between and overlying the web-gussets, so that the package has a complete inner lining of the flexible sheeting material contained wholly within the whole of the rigid material, and then stripping, at each web-gusseted end, the major part of the flexible sheeting material from the rigid material, heat sealing the fin extension of the lining, folding the rigid material in the form of flaps wholly outside the lining, and adhering the respective end flaps to one another.
Claim 7
Independent Claim
165 words
The method of forming a package composed of a substantially rigid material such as boxboard to the whole of one face of which a moisture-resistant flexible sheeting material has been adhered by means of a thermoplastic coating such as microcrystalline wax, which comprises the steps of forming the rigid material into rectangular tubular form with the sheeting material inside, closing each end of the tubular form filling before completing the closing of the second end, each closing procedure comprising forming web-gussets on each side and a fin-extension extending between and overlying the web-gussets, so that the package has a complete inner lining of the flexible sheeting material contained wholly within the whole of the rigid material, and then stripping, at each web-gusseted end, the major part of the flexible sheeting material from the rigid material, heat sealing the fin extension of the lining, folding the rigid material in the form of flaps wholly outside the lining, and adhering the respective end flaps to one another.
Claim 8
Dependent Claim
41 words
A method according to claim 5, characterized in that the flaps constituting extensions of the main walls of the rectangular tubular package are severed from one another subsequently to the heat sealing but before they are folded wholly outside the lining.
Claim 9
Independent Claim
193 words
A method of forming a package composed of a substantially rigid material such as boxboard to the whole of one face of which a moisture-resistant flexible sheeting material has been adhered by means of a thermoplastic coating such as microcrystalline wax, which comprises forming the rigid material into a rectangular tubular form with the sheeting material inside and with a side seam by the steps of bringing the sheeting on a sealing flap into contact face-to-face with the sheet-lining on a side panel, heating the contracting layers of sheet-lining so as to join them along areas adjacent the free area of the sealing flap and side panel and to enable the sheeting to be stripped from the board support of the side panel, strippIng the sheeting from the said board support, applying adhesive to either the stripped portion of the board support or the outer, board support of the sealing flap and folding the stripped portion of the board support so that it overlaps and adheres to the outer, board support surface of the sealing flap, filling, folding and sealing the ends of the tubular form to provide a closed and sealed package.
Claim 10
Independent Claim
193 words
A method of forming a package composed of a substantially rigid material such as boxboard to the whole of one face of which a moisture-resistant flexible sheeting material has been adhered by means of a thermoplastic coating such as microcrystalline wax, which comprises forming the rigid material into a rectangular tubular form with the sheeting material inside and with a side seam by the steps of bringing the sheeting on a sealing flap into contact face-to-face with the sheet-lining on a side panel, heating the contracting layers of sheet-lining so as to join them along areas adjacent the free area of the sealing flap and side panel and to enable the sheeting to be stripped from the board support of the side panel, strippIng the sheeting from the said board support, applying adhesive to either the stripped portion of the board support or the outer, board support of the sealing flap and folding the stripped portion of the board support so that it overlaps and adheres to the outer, board support surface of the sealing flap, filling, folding and sealing the ends of the tubular form to provide a closed and sealed package.
Claim 11
Dependent Claim
22 words
A method according to claim 1, in which the adhesive coating is absorbed by the board material when the sheeting is heated.
References Cited (Backward Citations)
US734224A
Cited
US1277928A
Cited
US2202213A
Cited
US2329311A
Cited
US3425324A
Cited
US3481098A
Cited
US3411694A
Cited
US3513618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |