US20030066870A1

US20030066870A1 - Tubular container with side opening

Info

Publication number: US20030066870A1
Application number: US10/219,207
Authority: US
Inventors: Noel Stewart
Original assignee: Stone Container Corp
Current assignee: Stone Container Corp
Priority date: 1999-02-13
Filing date: 2002-08-15
Publication date: 2003-04-10

Abstract

A paperboard container for releasably dispensing contents contained therein is convertible from a substantially sealed orientation to a substantially open, dispensing orientation and back to the substantially sealed orientation. The paperboard container comprises a tubular container member, a bottom member and a top member, with the top member being telescopically received within the container member to seal the top member to the container. The top member is pivotable about the hinge portion and is pivotable to the sealed orientation to substantially reseal the container member.

The present invention is directed to a paperboard container with an opening on the side, including a tubular body, a first end panel and second end panel, and a tear-out panel initially contained within said tubular body. The tear-out panel is separated from the remainder of the tubular body by cuts or perforations, and may be partially or completely removed to allow access to the contents of the container. A means for sealably reclosing the tear-out panel is also provided to allow for reclosing of the container. An internal membrane may also be adhered to the inner surface of the body below the tear-out panel.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation-in-part of Ser. No. 09/586,451, filed Jun. 2, 2000, presently pending, which in turn, is a continuation-in-part of Ser. No. 09/437,968, filed Nov. 10, 1999, which, in turn, claims the benefit of U.S. Provisional Application No. 60/120,030, filed Feb. 13, 1999.[0001]

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not Applicable. REFERENCE TO A “MICROFICHE APPENDIX”

Not Applicable.

BACKGROUND OF THE DISCLOSURE

1. Field of the Invention

The present invention is directed to paperboard lids for paperboard containers and, more specifically, to an integrated paperboard lid having a hinge on the lid. The present invention is further directed to a paperboard container with an opening on the side.

2. Background Art

Paper containers are often used to hold consumer items such as cereals, grains, etc. To open the container, often, the consumer simply opens the entire top of the container. This allows access to the inner liner that holds the products. This arrangement is typical of boxes of breakfast cereal. Other boxes include a perforated portion on the side of the box, near the top, or on the top of the box, near the side. The perforated portion, when separated from the box, creates an openable flap that allows access to the interior of the box. This type of construction, which is often found on boxes of grain, soap and other products, does not allow for effective closing of the box.

Paper containers with tear-out side panels are also known in the art. Such tear-out panels are commonly found in boxes for holding beverage cans and bottles as well as in containers for facial tissue, and allow easy access to product within such containers. These panels are typically perforated and are completely removable from the container itself to provide access to the contents within the container. However, such containers typically do not contain a mechanism for sealably reclosing the container once the tear-out panel has been separated from the container body. As a result, the container is no longer capable of being reclosed, and a permanent opening is created. Such an arrangement is not always desirable, however, particularly where the container contains a perishable product.

It would be desirable to provide a paperboard container with a tear-out side panel that is capable of being reclosed in order to preserve the contents within.

It would further be desirable to provide a container that is convertible from a substantially sealed orientation to a substantially open, dispensing orientation and back to the substantially sealed orientation.

It would also be desirable to provide a container that is capable of remaining in a substantially open, dispensing orientation without obstructing the dispensing of contents contained therein.

It would also be desirable to provide a container that is capable of reclosing from a substantially open orientation to a substantially sealed orientation without the loss of contents contained therein.

These and other objects of the present invention will become apparent in light of the present specification, claims and drawings.

SUMMARY OF THE INVENTION

The invention comprises a paperboard container for releasably dispensing contents contained therein. The container is convertible from a substantially sealed orientation to a substantially open, dispensing orientation and back to the substantially sealed orientation. The container includes a substantially tubular container member, a paperboard bottom member and a paperboard top member.

The container member has an upper edge defining an upper opening and a lower edge defining a lower opening. The bottom member substantially corresponds in shape to the shape of the lower opening, and the top member substantially corresponds in shape to the shape of the upper opening. The top member circumference is larger than the circumference of each of the upper edge and the upper opening of the container member.

The top member has a front portion, a hinge portion, a back portion, an outer edge and a circumference. The top member is telescopically received within the upper opening of the container member, and the upper edge of the container member is rolled up over the outer edge of the top member to seal the top member to the paperboard member. The top member is also pivotable to the sealed orientation to substantially reseal the container member.

In one embodiment, the container includes a membrane adhered to inner surfaces of the container member below the container top member. The membrane has a back portion and a front portion. The back portion is substantially equal in width to the width of the top member, and the front portion has a width which is less than the width of the top member and substantially equal in width to the width of the container member. Preferably, the membrane is made of barrier protective materials.

The hinge portion includes means for maintaining the hinge portion in a pivoted position relative to the remainder of the top member, and the maintaining means is located substantially adjacent the hinge axis. In one embodiment, the hinge portion extends generally straight across the top member and the hinge portion buckles under the top member back portion to create a friction fit that holds the top member front portion in its opened position. Moreover, the hinge portion includes outer portions and an inner portion extending between the outer portions, with the outer portions and the inner portion defining the hinge portion. The hinge portion is also sized to engage the membrane when the top member front portion is in its open orientation and to hold the front portion in the open orientation.

In another embodiment, the hinge portion includes a pair of outer segments, a pair of inner segments spaced axially from the outer segments, and a pair of axial segments joining the inner and outer segments. The top member hinge portion further includes a tab extending rearwardly toward the top member back portion. The tab is sized to engage the membrane when the top member front portion is in its open orientation and to hold the front portion in the open orientation. Preferably, the tab extends between the inner segments of the hinge portion.

In yet another embodiment, the top member front portion includes at least one tooth for engaging the container member upper edge when the top member is in its sealed orientation.

In another embodiment, the hinge portion includes at least two tabs extending rearwardly toward the top member back portion. The tabs are sized to engage the membrane when the top member front portion is in its open orientation and to hold the front portion in the open orientation.

In yet another embodiment, the top member hinge portion includes a biasable cover member. The cover member has a closure flap extending rearwardly toward the top member back portion for securing the cover member to the top member when the top member is in its sealed orientation. The cover member further includes a tab for facilitating the manipulation of the top member from its sealed orientation to its open, dispensing orientation.

The present invention is also directed, in part, to a substantially paperboard container for allowing access to product contained within by means of a removable side panel. The container of this embodiment comprises a substantially tubular body, fabricated substantially from paperboard material, and having an outer surface, an inner surface, a first edge defining a first opening, and a second edge defining a second opening. A first end panel substantially corresponds in shape to the shape of the first opening, and has an outer edge portion. A second end panel substantially corresponds in shape to the shape of the second opening, and has an outer edge portion. Further, at least one of the first end panel and the second end panel are fabricated substantially from paperboard material. The first panel is telescopically received within the first opening of the body, the first edge of the body being rolled up over the outer edge of the first end panel to seal the first end panel to the body. In addition, a tear-out panel is initially contained at least partially within the body, and is capable of being at least partially separated from the body by means of cuts or perforations.

In addition, at least a portion of the tear-out panel may be capable of frictionally engaging a portion of the body in order to sealably reclose the container after the tear-out panel has been partially separated from the body.

In another embodiment, the tear-out panel further comprises a tab portion not initially integrated within the body. The tab portion is capable of frictionally engaging a portion of the body in order to sealably reclose the container after the tear-out panel has been partially separated from the body.

At least one of the first end panel and the second end panel may also comprise a transparent portion for viewing of product within the container prior to separation of the tear-out panel from the body.

The container may also comprise a membrane below the tear-out panel which is adhered to the inner surface of the container body. The membrane may be made of barrier protective materials.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a container of the present invention, with the container being closed; [0028]
FIG. 2 is a perspective view showing the container of FIG. 1 with the lid opened; [0029]
FIG. 3 is an exploded view of the container of FIG. 1; [0030]
FIG. 4 is a plan view of a blank from which the lid of FIG. 1 is made; [0031]
FIG. 5[0032] a is a perspective, exploded view of an alternative blank from which the lid is made, this lid including a laminated underside;
FIG. 5[0033] b is a perspective, exploded view of an alternative blank from which the lid is made, this lid also including a laminated underside;
FIG. 6 is a cross-sectional view taken along lines [0034] 6-6 of FIG. 1, and looking in the direction of the arrows, showing the lid of FIG. 5 used to cover the container;
FIG. 7 is a perspective view of the container of FIG. 1, with an alternative lid construction, with the lid being closed; [0035]
FIG. 8 is a perspective view of the container of FIG. 7, with the lid being open; [0036]
FIG. 9 is a plan view of a blank used to form the lid for the container of FIG. 7; [0037]
FIG. 10 is a cross-sectional view taken along lines [0038] 10-10 of FIG. 8, and looking in the direction of the arrows, showing the lid in its opened position;
FIG. 11[0039] a is a perspective view of a blank used to form an alternative lid for the containers of FIGS. 1 and 7, with the lid being closed;
FIG. 11[0040] b is a perspective view of FIG. 11a, showing teeth 212 upon articulation and prior to positioning the container in its sealed orientation;
FIG. 12[0041] a is a perspective view of a blank used to form another alternative lid for the containers of FIGS. 1 and 7, with the lid being closed;
FIG. 12[0042] b is a perspective view of FIG. 12a, showing teeth 312 upon articulation and prior to positioning the container in its sealed orientation;
FIG. 13 is a perspective view of a blank used to form yet another alternative lid for the containers of FIGS. 1 and 7, with the lid being open; [0043]
FIG. 14[0044] a is a perspective view of a blank used to form an alternative lid for the containers of FIGS. 1 and 7, with the lid being closed;
FIG. 14[0045] b is a perspective view of a blank used to form an alternative lid for the containers of FIGS. 1 and 7, with the lid being open;
FIG. 15[0046] a is a perspective view of a blank used to form another alternative lid for the containers of FIGS. 1 and 7, with the lid being closed; and
FIG. 15[0047] b is a perspective view of a blank used to form another alternative lid for the containers of FIGS. 1 and 7, with the lid being open.
FIG. 16 is a perspective view of a tubular container with side opening embodying the present invention, prior to separation of the tear-out panel from the container. [0048]
FIG. 17 is a perspective view of the container of FIG. 16, showing the container after the tear-out panel has been partially separated from the container. [0049]
FIG. 18 is a perspective view of the container of FIG. 16, showing the container after the tear-out panel has been completely separated from the container. [0050]

DETAILED DESCRIPTION OF THE DRAWINGS

While this invention is susceptible of embodiment in many different forms, they are shown in the drawings and will be described in detail herein, several specific embodiments with the understanding that the present invention is to be considered as an exemplification of the principles of the invention and is not intended to limit the invention to the embodiments illustrated. [0051]
One embodiment of a paperboard container [0052] 1 of the present invention is shown generally in FIGS. 1-3. The container 1 includes a main body or tube portion 3 having a top edge 5 and a bottom edge 7. The body 3 has side walls defining a chamber that is opened at its top and bottom. The body 3 shown in the drawings is generally quadrilateral in plan view. However, the body could be circular, triangular, or any other desired shape. A top member 9 and a bottom member 11 are provided to close the top and bottom openings of the body 3. The top and bottom members 9 and 11 are of the same shape and size. They are also generally in the same shape as the body 3, but are proportionally larger than the body 3. That is, the circumference of the top and bottom members 9 and 11 is greater than the circumference of the body portion 3.
The [0053] top member 9 can be a single ply. Alternatively, as seen in FIGS. 5a and 6, a laminate 13 can be applied to the bottom surface of the top member 9 to form a top member assembly. Likewise, as shown in FIG. 5b, a laminate 13′ can be applied to the bottom surface of the top member 9′ to form a top member assembly.
To apply the top and [0054] bottom members 9 and 11 to the body 3, the respective member is pressed into the body 3, as seen in FIG. 6. When the member is pressed into the body 3, the peripheral edges 15 of the member will be turned up (in the case of top members 9 and 9′). The member is pushed into the body until the outer edge of the member is below the top (or above the bottom) edge of the body 3. The edge of the body 3 is then rolled over to form a lip 16 that extends around the circumference of container 1.
As seen in FIG. 4, the [0055] top member 9 includes a front portion 17 and a rear portion 19 separated by a line 21. The line 21 includes cuts, perforations, or other lines of weakness 23 that extend inwardly from the side edges of the top member 9. The lines of weakness 23 are then separated by a fold line 25. As seen in FIG. 1, the slice 23 extends up the peripheral portion 15 of the top member 9.
As seen in FIG. 5[0056] a, in the top member 9, the laminate 13 has a back portion 27 having a side-to-side width substantially equal to the side-to-side width of the top member 9. The laminate back portion 27 is substantially as long as the top member rear portion 19, and extends from the back edge of the top member 9 to the line 21. As shown in FIG. 5b, at approximately line 21, laminate 13′ steps down, as at 29, to form the front portion 31 of laminate 13. The laminate front portion 31′ has a side-to-side width approximately equal to the side-to-side width of the body 3 (which is less than the side-to-side width of the top member 9′). Additionally, the laminate front portion 31′ does not extend to the front edge of the top member 9′. Rather, it is sized to extend to the front edge of the body 3 when the top member assembly is placed in the body 3.
After the [0057] top member 9 is applied to the container body 3, a cut, perforation, or other line of weakness 23 is formed beneath the top edge 5 of the container 1. The cut 23 is positioned on the body 3 to be approximately equal with or slightly below the bottom of the lip 16 (i.e., the original top edge 5 of the body 3). The cut 23, however, is above the upper surface of the top member 9, as is best seen in FIG. 2. The cut 23 extends from a point co-linear with the top member line 21 around the front of the body 3 and back to a point co-linear with the top member line 21. The cut 23 thus enables the front portion 17 of the cover 9 to be lifted up, as seen in FIG. 2. As seen in FIG. 2, when the cover front portion 17 is lifted to its opened position, the lower part of the lip 16 is exposed. Additionally, when the cover front portion 17 is opened, the rear edges 36 of the lip 16 are forced inside of the lip of the cover rear portion 19. The two portions create a friction fit that holds the cover front portion 17 in its opened position. Further, because the lip 16 is exposed below the cut 23, the lip 16 will frictionally engage the wall of the container body 3 when the cover forward portion 17 is closed, as shown in FIG. 1. This will help retain the cover forward portion 17 in its closed position.
As seen in FIG. 2, the container [0058] 1 can include a membrane or seal 37 below cover member 9. The seal 37 closes the container below the cover 9 and must be broken before product can be poured from the container 1.
A second embodiment of the cover member is shown in FIGS. [0059] 7-10. The container 101 of FIGS. 7 and 8 is substantially identical in construction to the container 1 of FIGS. 1 and 2. It varies only in the construction of the cover member 109. The cover member 109, in turn, is substantially similar to the cover member 9. The difference lies in the line 121 that separates the cover front portion 117 from the cover back portion 119. The line 121 (FIG. 9) includes opposing outer scores 123 which have outer ends spaced from the side edges of the cover member 109 and extend inwardly slightly. A second pair of opposing scores 125 extend rearwardly (and orthogonally) from the inner edges of the first score lines 121. A pair of inner fold lines 127 extends inwardly from the ends of the second score lines. Lastly, a tab 129 connects the inner ends of the fold lines 127. The tab 129 is formed to extend toward the cover rear portion 119.
A line of weakness or cut [0060] 135, identical to the cut 23, extends around the forward portion of the container body 103. Rather than having vertical slices at the ends of the cut 135, as shown in FIGS. 1 and 2, the cut 135 has a sloped end, as at 135. (FIG. 7) The sloped end 135 of the slice connects with the scores 123 of the cover line 121. Thus, when the cover 109 is assembled into the body 103 to produce the container 101, the cover front portion 117 can be opened. The cover front portion 117 is substantially the same, and operates in substantially the same manner as the cover front portion 19 of container 1. However, the cover 109 has the tab 129 that engages the membrane or seal 137 when the cover front portion 117 is opened, as seen in FIG. 10. The engagement of the tab 129 with the seal 137 will create a further frictional engagement between the lid and the membrane that will help maintain the cover in its opened position.
A third embodiment of the cover member is shown in FIGS. [0061] 11-12. The container (not shown) associated with the cover member 209 and 309 of FIGS. 11a and 12 is substantially identical in construction to container 1 of FIGS. 12. It varies only in the construction of cover member 209. The cover member 209, in turn, is substantially similar to the cover member 109. The difference lies in the peripheral edges of cover front portion 217 and 317. Cover front portion 217 and 317 includes equidistantly-spaced teeth 212 and 312 (FIGS. 11b and 12 b) on its peripheral edges. Engagement of teeth 212 and 312 with the tube body portion (not shown) creates a further frictional engagement between the lid and the membrane that will help maintain cover member 209 and 309 in its closed position.
A fourth embodiment of the cover member is shown in FIG. 13. The container (not shown) associated with FIG. 13 is substantially identical in construction to container [0062] 1 of FIGS. 1-2. It varies only in the construction of cover member 409. The cover member 409, in turn, is substantially similar to cover member 109. The difference lies in line 421 that separates the cover front portion 417 from the cover back portion 419. Line 421 includes three equidistantly-spaced tabs or detentes 429. The tab 429 is formed to extend toward the cover back portion 319. To form each of tabs 429, a partial cut, in a semi-circular shape, is formed on the bottom side of cover back portion 419. The engagement of tabs 429 with the seal 437 creates a further frictional engagement between the lid and the membrane that will help maintain the cover member 409 in its opened position.
A fifth embodiment of the cover member is shown in FIGS. 14[0063] a and 14 b. Container (not shown) associated with FIGS. 14a and 14 b is substantially identical in construction to the container 1 of FIGS. 1-2. It varies only in the construction of cover member 509. The cover front portion 517 includes closure assembly 520, which comprises an octagonally-shaped closure 528, tab 529 and slot 530. To secure cover member 509, closure 528 is inserted in slot 530 until tab 529 is in contact with cover front portion 517 (FIG. 14). To maintain cover member 509 in its substantially open, dispensing orientation, closure 528 is manually biased to a position substantially perpendicular to the cover member axis (FIG. 14b). Although closure 528 is illustrated as octagonally-shaped, it is likewise contemplated that it may be circular, rectangular, square or any other geometric shape.
A sixth embodiment of the cover member is shown in FIGS. 15[0064] a and 15 b. Container (not shown) associated with FIGS. 15a and 15 b is substantially identical in construction to the container 1 of FIGS. 1-2. It varies only in the construction of cover member 609. The cover front portion 617 includes closure assembly 620, which comprises and octagonally-shaped closure 628, tab 629 and slot 630. To secure cover member 609, tab is inserted in slot 630 until closure 628 is in contact with cover front portion 617 (FIG. 15a). Although closure 628 is illustrated as octagonally-shaped, it is likewise contemplated that it may be circular, rectangular, square or any other geometric shape.
In a still further embodiment of the invention, shown in FIGS. [0065] 16-18, tubular container 701 with side opening 710 is shown as comprising body tube 720, top lid panel 722, bottom lid panel 723, and tear-out panel 724 within body tube 720. Body tube 720 further comprises front side 730, back side (not shown), first side 734 and second side 736 (not shown). While in this embodiment, body tube 720 is generally quadrilateral in plan view, the body could also be circular, triangular or any other desired shape.
Tear-[0066] out panel 724 is shown in FIG. 16 before separation from body tube 720. Tear-out panel 724 includes first panel 740, second panel 742, and tab portion 744. Initially, all of tear-out panel 724 is contained within body tube 720, except for tab portion 744, which extends from the edge of second panel 742. First panel 740 comprises a portion of front side 730, and second panel 742 comprises a portion of first side 734. Tear-out panel 724 is separated from the remainder of body tube 720 by a line 746. The line 746 includes cuts, perforations, or other lines of weakness that will allow tear-out panel 724 to be easily removed from body tube 720.
The product within [0067] container 701 may be accessed by pulling upward on tab portion 744 in order to separate tear-out panel 724 from the remainder of body tube 720 along line 746, as shown in FIG. 17. There, tear-out panel 724 has been separated from body tube 720 along three sides, leaving one remaining side attached to body tube 720. In this orientation, container 701 can be sealably reclosed by returning tear-out panel 724 to its closed position and tucking tab portion 744 inside body tube 720, thereby frictionally engaging tab portion 744 with the inner surface of body tube 720, resulting in a secure closure.
Alternatively, tear-out [0068] panel 724 can be completely separated from body tube 720 along line 746 so that tear-out panel 724 may be permanently removed, as shown in FIG. 18. In such a case, container 701 is then in a permanently open state, as is typically the case with containers for such products as facial tissue. Such a design allows the consumer to either retain tear-out panel 724 in place in order to reclose container 701 or to remove tear-out panel 724 in order to allow for unobstructed access to the contents of container 701.
Initially, tear-out panel [0069] 824 is integrated within body tube 820, as in the embodiment of FIGS. 16-18. Access to the contents of container 801 is provided by pulling up on second panel 842, causing tear-out panel 824 to separate from body tube 820 along line 846. As in the previous embodiment, tear-out panel 824 may be either retained in place along one edge in order to allow for reclosing of container 801, or may be completely removed from body tube 820 in order to allow unobstructed access to the contents of container 801 as desired.
The foregoing description and drawings merely explain and illustrate the invention, and the invention is not limited thereto except insofar as the pending claims are so limited as those skilled in the art who have the disclosure before them will be able to make modifications and variations therein without departing from the scope of the invention. [0070]

Claims

1. A substantially paperboard container for allowing access to product within by means of a removable side panel, the paperboard container comprising:

a substantially tubular body, fabricated substantially from paperboard material, the tubular body having an outer surface, an inner surface, a first edge defining a first opening, and a second edge defining a second opening;

a first end panel substantially corresponding in shape to the shape of the first opening, the first end panel having an outer edge portion;

a second end panel substantially corresponding in shape to the shape of the second opening, the second end panel having an outer edge portion;

at least one of the first end panel and the second end panel being fabricated substantially from paperboard material;

the first end panel being telescopically received within the first opening of the body, with the first edge of the body being rolled up over the outer edge of the first end panel to seal the first end panel to the body; and

a tear-out panel initially contained at least partially within the body, said tear-out panel capable of being at least partially separated from the body by means of cuts or perforations.

2. The container according to claim 1, wherein at least a portion of said tear-out panel is capable of frictionally engaging a portion of said body in order to sealably reclose said container after said tear out panel has been partially separated from said body.

3. The container according to claim 1, wherein said tear-out panel further comprises a tab portion not initially integrated within said body, said tab portion capable of frictionally engaging a portion of said body in order to sealably reclose the container after said tear-out panel has been partially separated from said body.

4. The container according to claim 1, wherein at least one of said first end panel and said second end panel comprises a transparent portion for viewing of product within the container prior to separation of said tear-out panel from said body.

5. The container according to claim 1, further comprising a membrane below said tear-out panel, said membrane adhered to the inner surface of the container body.

6. The container according to claim 5, wherein the membrane is made of barrier protective materials.