US3796307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrugate-film laminate package material and package
Assignee: WR Grace and Co Conn
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Filing: 1972-06-05
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Granted: 1974-03-12
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Expires: 1992-06-05
Abstract
Abstract This invention comprises a corrugated package material wherein the corrugated fluting is attached to one or more sheets of heat shrinkable polymeric film. The heat shrinkable film is preferably on only one side of the corrugated fluting, but may be on both sides of the corrugated fluting. This packaging material is then formed into a carton and this carton filled; or is used to bundle a series of containers, and the final assembly, whether a carton or bundle, heat shrunk, whereby the strength of the corrugate is increased.
Inventors
- 👤 J Mckinney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:08
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/10; B32B29/00; B32B29/08; B65; B65D; B65D65/00; B65D65/38; B65D65/40; B65D65/403; B65D71/00; B65D71/06; B65D71/08; B65D71/10; B32B2307/00; B32B2307/70; B32B2307/732; B32B2307/734; B32B2307/736; B32B2439/00; B65D2571/00; B65D2571/00006; B65D2571/00012; B65D2571/00018; B65D2571/00024; B65D2571/00037; Y; Y10; Y10S; Y10S206/00; Y10S206/819; Y10S229/00; Y10S229/939; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
57 words
A package comprising at least one object tightly wrapped in a packaging material comprising a corrugated substrate having peaks and flutes on each face and a heat shrunk polymeric film attached to the peaks of at least the outer face of the corrugated substrate, said shrunken film maintaining the fluting and object in a tight, compressed state.
Claim 2
Dependent Claim
57 words
A package comprising at least one object tightly wrapped in a packaging material comprising a corrugated substrate having peaks and flutes on each face and a heat shrunk polymeric film attached to the peaks of at least the outer face of the corrugated substrate, said shrunken film maintaining the fluting and object in a tight, compressed state.
Claim 3
Dependent Claim
18 words
The package of claim 1 wherein said film is heat sealed to the peaks of the corrugated substrate.
Claim 4
Dependent Claim
18 words
The package of claim 1 wherein said film is adhesively bonded to the peaks of the corrugated substrate.
References Cited (Backward Citations)
US2553923A
Cited
US2833404A
Cited
US3050402A
Cited
US3142599A
Cited
US3406052A
Cited
US3562999A
Cited
US3627116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |