Envelopes – wrappers – and paperboard boxes – Paperboard box – Multi-layer side or bottom wall having two or more layers of...
Reexamination Certificate
1999-12-29
2001-12-11
Elkins, Gary E. (Department: 3727)
Envelopes, wrappers, and paperboard boxes
Paperboard box
Multi-layer side or bottom wall having two or more layers of...
C229S122330
Reexamination Certificate
active
06328202
ABSTRACT:
BACKGROUND OF THE INVENTION
Owing in part to the popularity of the so-called “club” stores, there is perceived to be an Increase In consumer demand for products packaged in larger unit volumes. The demand for larger units has resulted in a need for suitable packaging for such units. Among the problems with which the packaging engineer must deal in devising suitable containers, is the increased weight which such containers must be capable of holding.
Increases in unit volume impact not only the immediate container for the product, but also secondary and tertiary packaging. For instance, cartons in which the larger/heavier containers are shipped must also be suitable and may have to be adapted to the new containers.
The Procter and Gamble Company uses a display carton for its 96 Load Tide® detergent product. The display carton includes four triangular corner posts and front and rear display windows wherein a portion of carton has been bent over and adhered to itself.
Ellison et al., U.S. Pat. No. 3,891,137 discloses a fiberboard container constructed from an outer blank of corrugated fiber board and a separate and distinct inner liner of corrugated fiberboard which is laminated interior thereof. A generally rectangular access door is located in one of the sidewall panels and is hinged to the remainder of the outer blank along an edge. An object of the Ellison et al. invention is said to be to provide a reinforced bulk container with an access door which does not substantially weaken the container. The cuts forming the access door in Ellison et al. are positioned at least two inches from the corners so as not to diminish the stacking strength. The width of access door
48
in
FIGS. 3 and 4
of Ellison et al. may vary up to amount equal to the width of sidewall panel
32
.
Vesborg, U.S. Pat. No. 4,382,504 is directed to a transport and display container.
Spamer, U.S. Pat. No. 5,039,002 is directed to a case for displaying articles in retail outlets, which is preferably formed of corrugated plastic or paperboard material.
DeMott, U.S. Pat. No. 5,277,360 is directed to a stackable container having a display opening. Locking slots and locking tabs are illustrated.
Edgerton et al., U.S. Pat. No. 5,372,299 is directed to a combined product shipping and display box.
Leftwich et al., U.S. Pat. No. 5,657,872 is directed to shipping/display container which includes a tray portion having a bottom panel, two opposed end panels and two opposed side panels. A front side panel includes a line of weakness defining a severable portion in at least an intermediate portion downward to the lower-most edge of the front side panel. The severable portion includes a preformed aperture located adjacent to the lower-most edge of the front panel for initiating removal of the severable region. It is said that because the severable portion, at least in its center region, is preferably completely removed down to the bottom panel, products may be extracted from the resulting opening even though other containers or articles may be stacked both above and below the subject container limiting the ability to extract packages at an angle.
Carr et al., U.S. Pat. No. 5,718,337 discloses a carton for a bag stack. The carton includes two unshaped upper edges defining access windows. The front and back walls are provided with a hinged or removable panel below the access window to allow the sizes of the front and back windows to be increased.
SUMMARY OF THE INVENTION
The present invention is directed in one aspect to a shipping case which is suitable for shipping consumer and other goods, including goods which are packaged in high unit volume. The invention can also be used as a carton for primary packaging. The case or carton of the invention can be expected to enjoy excellent compressive strength, e.g., so that the cases or cartons may be stacked one upon the other notwithstanding the substantial weight of the high unit volume consumer products, e.g. 300 fluid oz. heavy duty liquid detergent containers.
In a preferred embodiment, the case or carton comprises four panels, a front panel, an opposed rear panel, and two opposed side panels between the front and rear panels. Bottom and top closures preferably comprise two major flaps and two minor flaps. The case or carton includes a liner having liner walls adjacent the panels of the case. Preferably the liner includes at least two liner walls, more preferably at least three liner walls and most preferably includes three liner walls and two partial liner walls (and walls), the partial liner walls cot responding substantially in height to the height of the front panel yet comprising only a fraction of the width.
In accordance with another advantageous feature of the invention, one or more of the walls of the liner include extensions, such as tabs, which are received within one or more apertures, such as slots, in the bottom closure. These serve to help secure the liner in the case or carton. In addition, it is preferred that the sections of fiberboard in which the extensions of the liners are formed also be used to from liners. Such “nesting” saves paperboard and helps decrease the cost of the liner. Where such nesting is used, the top of the liner will include a cutout corresponding roughly to the shape of the extension.
In another aspect, the invention relates to a new liner which includes one or more medial panels and two end panels, one on each end. Preferably there are at least three medial panels. The length of the end panels are each no more than 50% the length of any of the medial panels. The invention also pertains to a carton or shipping case including the liner.
For a more complete understanding of the above and other features and advantages of the invention, reference should be made to the following detailed description of the preferred embodiments and the accompanying drawings.
REFERENCES:
patent: 959261 (1910-05-01), Reber
patent: 2606709 (1952-08-01), Carey et al.
patent: 3891137 (1975-06-01), Ellison et al.
patent: 4017016 (1977-04-01), Ivy
patent: 4380314 (1983-04-01), Langston, Jr. et al.
patent: 4382504 (1983-05-01), Vesborg
patent: 4572424 (1986-02-01), Muise et al.
patent: 5039002 (1991-08-01), Spamer
patent: 5277360 (1994-01-01), DeMott
patent: 5320279 (1994-06-01), Giblin et al.
patent: 5363981 (1994-11-01), Giblin et al.
patent: 5372299 (1994-12-01), Edgerton, Jr. et al.
patent: 5439133 (1995-08-01), Stone
patent: 5487504 (1996-01-01), Baird
patent: 5657872 (1997-08-01), Leftwich et al.
patent: 5718337 (1998-02-01), Carr et al.
patent: 5775576 (1998-07-01), Stone
patent: 5893513 (1999-04-01), Stone et al.
patent: 6015084 (2000-01-01), Mathieu et al.
patent: 01/05667 (2001-01-01), None
International Search Report date Jun. 1, 2001.
Elkins Gary E.
McGowan, Jr. Gerard J.
Unilever Home & Personal Care USA , division of Conopco, Inc.
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