Patent US3604613A successfully refreshed from Google Patents.
US3604613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Side-seam-sealed container
Assignee: International Paper Co
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Filing: 1969-06-25
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Granted: 1971-09-14
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Expires: 1989-06-25
Abstract
Abstract A container for packaging fluids is made from a scored folded blank of coated paperboard. The container is made resistant to leakage by preventing the uncoated edge of a side-sealing panel from taking up fluid. This edge is protected by skiving a strip adjacent to the edge of the sealing panel, scoring the center of the skived strip and folding it on the scoring so that the skived faces are in intimate contact with each other. The container is folded from the prepared blank and seam sealed.
Inventors
- 👤 Henry J Haas
- 👤 Leon W La Bombard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:56
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/70; B29C66/72; B29C66/723; B29C66/7232; B29C66/72327; B29C66/72328; B29C65/00; B29C65/02; B29C66/01; B29C66/02; B29C66/022; B29C66/0224; B29C66/02241; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/13; B29C66/135; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/432; B29C66/4326; B65; B65D; B65D5/00; B65D5/02; B65D5/06; B65D5/067; B65D5/42; B65D5/56; B65D5/563; B65D5/62
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
228 words
A fluid-packaging container which is resistant to penetration by the contained fluid and which protects the fluid from unwanted external substances, the container being constructed from a blank of foldable, plastic coated sheet material divided by scored lines into a plurality of contiguous sidewall panels and a side seam panel, each panel divided by other scored lines into top, body and bottom and having one surface of the side-seam panel bonded to the free margin of a sidewall panel, the side seam panel having a full thickness strip extending from and integral with the edge of one of said sidewall panels and a skived edge strip extending from and integral with the edge of said full thickness strip, said skived edge strip being skived substantially uniformly from one surface to a thickness of substantially one-half the thickness of said plastic coated sheet material, said skived edge strip having a centrally located scored line and being folded about said scored line with the skived surfaces being in intimate contact with each other, the free edge of said skived edge strip abutting against the free edge of said full thickness strip, the outer surface of the folded portion of the skived strip being part of the surface bonded to the adjacent sidewall, and top and bottom closure portions defined respectively by the top and the bottom sections of the panels.
Claim 2
Dependent Claim
228 words
A fluid-packaging container which is resistant to penetration by the contained fluid and which protects the fluid from unwanted external substances, the container being constructed from a blank of foldable, plastic coated sheet material divided by scored lines into a plurality of contiguous sidewall panels and a side seam panel, each panel divided by other scored lines into top, body and bottom and having one surface of the side-seam panel bonded to the free margin of a sidewall panel, the side seam panel having a full thickness strip extending from and integral with the edge of one of said sidewall panels and a skived edge strip extending from and integral with the edge of said full thickness strip, said skived edge strip being skived substantially uniformly from one surface to a thickness of substantially one-half the thickness of said plastic coated sheet material, said skived edge strip having a centrally located scored line and being folded about said scored line with the skived surfaces being in intimate contact with each other, the free edge of said skived edge strip abutting against the free edge of said full thickness strip, the outer surface of the folded portion of the skived strip being part of the surface bonded to the adjacent sidewall, and top and bottom closure portions defined respectively by the top and the bottom sections of the panels.
Claim 3
Dependent Claim
15 words
A container as in claim 1 in which the plastic layers comprise a low-density polyethylene.
Claim 4
Dependent Claim
19 words
A container as in claim 1 in which there are four sidewall panels defining a container rectangular in section.
Claim 5
Dependent Claim
155 words
A blank for a container for packaging fluids which tend to penetrate the container or are contaminated by the ingress of foreign materials, which comprises a foldable sheet of paperboard having both faces coated with an essentially impervious plastic layer, the sheet being divided by scored lines into a plurality of sidewall panels and a side seam panel, the side seam panel including a skived strip adjacent to one edge and a scored folding line parallel to its edge in the center of the skived strip on its unskived face, the remaining thickness of said skived strip being uniformly substantially one-half the thickness of said sheet, the free edge of the unskived portion of said side seam panel forming a shoulder against which the free edge of said skived strip is adapted to abut when said skived strip is folded about said scored folding line with the skived surfaces in intimate contact with each other.
Claim 6
Dependent Claim
155 words
A blank for a container for packaging fluids which tend to penetrate the container or are contaminated by the ingress of foreign materials, which comprises a foldable sheet of paperboard having both faces coated with an essentially impervious plastic layer, the sheet being divided by scored lines into a plurality of sidewall panels and a side seam panel, the side seam panel including a skived strip adjacent to one edge and a scored folding line parallel to its edge in the center of the skived strip on its unskived face, the remaining thickness of said skived strip being uniformly substantially one-half the thickness of said sheet, the free edge of the unskived portion of said side seam panel forming a shoulder against which the free edge of said skived strip is adapted to abut when said skived strip is folded about said scored folding line with the skived surfaces in intimate contact with each other.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |