US4141466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container for storing food
Assignee: International Paper Co
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Filing: 1977-07-22
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Granted: 1979-02-27
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Expires: 1997-07-22
Abstract
Abstract Disclosed is a container for storing product, a process and apparatus for making that container, a process and apparatus for drawing and blow forming plastic into a paperboard outer container and a process and apparatus for heat sealing a container. The container comprises a paperboard outer container and a plastic inner container which has been drawn and blow formed into the other container. At the mouth of the container are horizontal plastic flanges which extend about the periphery of the container at least about 1/8 inch outwardly from the plastic inner container. Vertical flanges extend downwardly at least about 1/8 inch from the horizontal flanges. After product is placed in the container, the container is sealed by a heat sealable cover. A plastic overcap may be provided which engagedly fits around the container at its top.
Inventors
- 👤 Robert L. Gordon
- 👤 George H. Naugle
- 👤 Keith A. Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:14
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/16; B29C51/162; B29C51/04; B65; B65B; B65B7/00; B65B7/16; B65B7/162; B65B7/164; B65D; B65D5/00; B65D5/42; B65D5/56; B65D5/60; B65D77/00; B65D77/04; B29C51/10
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
151 words
A container comprising: (a) an outer container constructed from paperboard and comprising four vertical walls and a bottom; (b) a drawn and blow formed plastic inner container, said plastic inner container with one exception conforming to and abutting to the inside of said outer container, said one exception being at the four edges of the container defined by the intersection of each of said vertical walls and said bottom, said plastic inner container being spaced from said four edges about 1/8 inch to about 3/8 inch; (c) four horizontal flanges extending horizontally about the periphery of the mouth of said container, said horizontal flanges extending from said plastic inner container at least about 1/8 inch; (d) four vertical flanges, said vertical flanges extending from said horizontal flanges at least about 1/8 inch; (e) a heat sealable cover, said heat sealable cover being heat sealed to substantially 100% of said horizontal flanges.
Claim 2
Dependent Claim
151 words
A container comprising: (a) an outer container constructed from paperboard and comprising four vertical walls and a bottom; (b) a drawn and blow formed plastic inner container, said plastic inner container with one exception conforming to and abutting to the inside of said outer container, said one exception being at the four edges of the container defined by the intersection of each of said vertical walls and said bottom, said plastic inner container being spaced from said four edges about 1/8 inch to about 3/8 inch; (c) four horizontal flanges extending horizontally about the periphery of the mouth of said container, said horizontal flanges extending from said plastic inner container at least about 1/8 inch; (d) four vertical flanges, said vertical flanges extending from said horizontal flanges at least about 1/8 inch; (e) a heat sealable cover, said heat sealable cover being heat sealed to substantially 100% of said horizontal flanges.
Claim 3
Dependent Claim
37 words
The container of claim 1 further comprising an overcap, said overcap engagedly fitting around said container at its top and further wherein said heat sealable cover comprises a layer of paperboard and a layer of sealing material.
Claim 4
Dependent Claim
23 words
The container of claim 2 wherein said heat sealable cover further comprises a layer of aluminum foil attached to said layer of paperboard.
Claim 5
Dependent Claim
17 words
The container of claim 2 wherein the layer of paperboard in said heat sealable cover is cartonboard.
Claim 6
Dependent Claim
14 words
The container of claim 4 wherein the cartonboard is at least 12 point cartonboard.
Claim 7
Dependent Claim
23 words
The container of claim 2 wherein the cross-section of the four vertical walls along a plane parallel to the bottom is substantially square.
Claim 8
Dependent Claim
16 words
The container of claim 2 wherein the volume of said container is at least one gallon.
Claim 9
Dependent Claim
31 words
The container of claim 2 wherein the heat sealable cover further comprises four vertical pull tabs, each of said vertical pull tabs extending substantially parallel to one of said vertical flanges.
Claim 10
Dependent Claim
106 words
A container comprising: (a) an outer container constructed from paperboard and comprising at least one vertical wall; (b) a drawn and blow formed plastic inner container; (c) at least one horizontal flange extending about the periphery of the mouth of said container, said at least one horizontal flange extending from said plastic inner container at least about 1/8 inch; (d) at least one vertical flange, said at least one vertical flange extending from said at least one horizontal flange at least about 1/8 inch; (e) a heat sealable cover, said heat sealable cover being heat sealed to substantially 100% of said at least one horizontal flange.
Claim 11
Dependent Claim
106 words
A container comprising: (a) an outer container constructed from paperboard and comprising at least one vertical wall; (b) a drawn and blow formed plastic inner container; (c) at least one horizontal flange extending about the periphery of the mouth of said container, said at least one horizontal flange extending from said plastic inner container at least about 1/8 inch; (d) at least one vertical flange, said at least one vertical flange extending from said at least one horizontal flange at least about 1/8 inch; (e) a heat sealable cover, said heat sealable cover being heat sealed to substantially 100% of said at least one horizontal flange.
Claim 12
Dependent Claim
37 words
The container of claim 9 further comprising an overcap, said overcap engagedly fitting around said container at its top and further wherein said heat sealable cover comprises a layer of paperboard and a layer of sealing material.
Claim 13
Dependent Claim
102 words
The container of claim 10 wherein: (a) said outer container further comprises a bottom; (b) said at least one vertical wall is a single vertical wall; (c) the cross-section of the single vertical wall along a plane parallel to the bottom of said container is circular; and (d) said plastic inner container with one exception conforms to and abuts the inside of said outer container, said one exception being at the edge of the container defined by the intersection of said single vertical wall and said bottom, said plastic inner container being spaced from said edge about 1/8 to about 3/8 inch.
Claim 14
Dependent Claim
26 words
The container of claim 11 wherein the layer of paperboard in said heat sealable cover is cartonboard and said cartonboard is at least 12 point cartonboard.
Claim 15
Dependent Claim
17 words
The container of claim 11 wherein the heat sealable cover further comprises a layer of aluminum foil.
Claim 16
Dependent Claim
27 words
The container of claim 11 wherein the heat sealable cover comprises one vertical pull tab, said vertical pull tab extending substantially parallel to the single vertical flange.
Claim 17
Dependent Claim
109 words
The container of claim 10 wherein: (a) said outer container further comprises a bottom; (b) said at least one vertical wall comprises three or more vertical walls; (c) the cross-section of the three or more vertical walls along a plane parallel to the bottom of said container is polygonal; and (d) said plastic inner container with one exception conforms to and abuts the inside of said outer container, said one exception being at the edges of the container defined by the intersection of each of said vertical walls and said bottom, said plastic inner container being spaced from each of said edges about 1/8 inch to about 3/8 inch.
Claim 18
Dependent Claim
26 words
The container of claim 15 wherein the layer of paperboard in said heat sealable cover is cartonboard and said cartonboard is at least 12 point cartonboard.
Claim 19
Dependent Claim
17 words
The container of claim 15 wherein the heat sealable cover further comprises a layer of aluminum foil.
Claim 20
Dependent Claim
31 words
The container of claim 15 wherein the heat sealable cover comprises at least three vertical pull tabs, said vertial pull tabs extending substantially parallel to the at least three vertical flanges.
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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) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |