GB2065074A

GB2065074A - Boxes and blanks therefor

Info

Publication number: GB2065074A
Application number: GB7943320A
Authority: GB
Original assignee: PACKAGING DEV Manufacturing Pty Ltd
Current assignee: PACKAGING DEV Manufacturing Pty Ltd
Priority date: 1979-12-17
Filing date: 1979-12-17
Publication date: 1981-06-24

Abstract

A box has side walls (10, 12, 14, 16), a set of top panels (20, 22, 24, 26) and a set of bottom panels (28, 30, 32, 34), the panels being so shaped that the box top has some areas which are above the level of the remainder of the top and the bottom also has areas which are above the level of the remainder of the bottom, which areas of the top and bottom are complementary so that when two boxes are stacked, said areas of the top are received in said areas of the bottom. <IMAGE>

Description

SPECIFICATION Boxes and blanks therefor This invention relates to boxes and to blanks from which the boxes are erected.

According to one aspect of the present invention there is provided a blank for erection into a box, the blank including four panels which form the side walls of the erected box and flaps joined to the four panels, the flaps, in the erected condition of the box, being folded inwardly so as to overlap one another to constitute the top and base of the box, the flaps formed to define, in the erected condition of the box, formations on the base of the box which interengage with formations on the top of an identical box on which the box is stacked, thereby to inhibit relative lateral movement between the two boxes.

The flaps can have portions thereof cut away to provide said formations. Alternatively the flaps can be folded over on themselves to provide said formations. As a further alternative, the flaps can be compressed to provide said formations.

According to a further aspect of the present invention there is provided a box comprising four vertical panels which form the side walls thereof and flaps protruding inwardly from the upper and lower edges of said panels, the flaps overlapping one another to form the top and the base of said box, the flaps being formed so as to define formations on the underside of the base of the box which inter-engage with formations on the top face of the top of an identical box on which the box is stacked thereby to inhibit relative lateral movement between the two boxes.

According to yet another aspect of the invention there is provided a pair of blanks for erection into the telescopic inner and outer sleeves of a box, each blank comprising four panels which form the side walls of the sleeve and flaps joined to the four panels, the flaps, in the erected condition of the blanks, being folded inwardly so as to overlap one another to constitute a base or a top of the respective sleeve, the flaps of one of said blanks being formed to define, in the erected condition of the sleeve, formations which inter-engage with formations defined by the flaps of the other blank when it is erected thereby to inhibit relative lateral movement between two boxes when they are stacked.

According to a still further aspect of the present invention there is provided a box comprising inner and outer telescopic sleeves, each sleeve comprising four vertical panels which form the side walls thereof and flaps protruding inwardly from the panels, the flaps of the inner overlapping one another to form a base for the box and the flaps of the outer overlapping one another to form a top for the box, the flaps being formed so as to define formations on the underside of the base of the box which inter-engage with formations on the top face of the top of an identical box on which the box is stacked thereby to inhibit relative lateral movement between the two boxes.

By way of example only, preferred forms of the invention will now be described with reference to the accompanying drawings in which: Figure lisa plan view of one form of blank according to the invention; Figures 2a and 2b are perspective views of the base and top parts of a box erected from the blank of Figure 1; Figure 3 is a plan view of a blank for erection into a box according to a second form of the invention; Figure 5 is a plan view of a blank for erection into a box in accordance with a fourth form of the invention; and Figure 6 is a plan view of a blank for erection into a box in accordance with a fifth form of the invention.

Referring to Figure 1 of the drawings, there is illustrated a blank; which is preferably of cardboard or corrugated board, having four panels 10, 12, 14 and 16 which, in the erected condition of the blank, constitute the four side walls of a box.

An end flap 18 is provided adjacent the panel 16, the flap 18 being brought, during erection of the box, into overlapping relationship with the panel 10 at the opposite end of the blank before being stapled or otherwise secured to such panel. The flap 18 can be omitted and the panels 10 and 16 taped togetherto form the box.

Integral with each of the side wall-forming panels are flaps 20, 22, 24, 26, 28, 30,32, 34 which project outwardly from such panels and which, in the erected condition of the box, are folded inwardly to form the bottom and top of the box.

Crease lines (shown as dashed lines in Figure 1) are provided where the panels and flaps meet.

In the form of the invention shown in Figure 1, the larger flaps 22,26 joined to the panels 12 and 16 are cut at 45 degrees while the smaller flaps 28, 32 disposed along the opposite sides of the other two panels are also cut at 45 degrees.

When a box is erected from the blank of Figure 1, these cut-away sections provide recesses in which locate the raised formations on an adjacent box in a stack of such boxes. Thus, the recesses in the top of one box (which are of triangular form as shown at R in Figure 2b) receive the raised formations on the base of the above box in the same stack (see Figure 2a). These raised formations are constituted by the flaps 28 and 32. By virtue of such inter-engagement of formations of one box in complementary fashion with an adjacent box in the same stack, relative sliding movement between the boxes is restricted.

In Figure 3 of the accompanying drawings, another blank is shown. Instead of cutting away portions of the flaps, the flaps can be crushed, for instance, by a compression or other re-shaping operation to provide the recesses and raised formations as described above. The shaded areas are those which are compressed by crushing so that these areas of the flaps are thinner than the remaining areas.

In Figure 4 of the drawings there is shown a third form of the invention in which the flaps are provided with crease lines to permit folding of the flaps to form the recess and raised formations.

In Figures 5 and 6 of the drawings, differently shaped cut-away portions are shown.

It is envisaged that boxes according to the invention will be stacked on a pallet By virtue of the recesses and raised formations described above, relative sliding movement between boxes in the stack is restricted. It is envisaged that outward lean ing of a stack of boxes on a pallet will be prevented by the use of bands which engage formations on the boxes and which extend around the loaded pallet for securing the boxes in position to the pallet.

It will be understood that all the blanks described, when folded, give rise to boxes with vertical sides, tops and bases. However, it is possible for each box to be constituted by inner and outertelescopic sleeves. The telescopic sleeve forming the outer would comprise, referring to Figure 1, the panels 10, 12, 14 and 16, the flap 18 and the flaps 20,22,24 and 26. The blank from which the inner is erected would comprise panels 10,12, 14 and 16, the flap 18, and the flaps 28,30,32 and 34. The dimensions of the panels 10,12, 14 and 16 of the blankformingthe inner would be so dimensioned that the outer could slip easily over it. In this form Figure 2a can be considered to be an underneath view of the telescopic inner and Figure 2b can be considered to be the view of the telescopic outer.

The inner and outer need not be fully telescopic which would mean that the panels 10, 12, 14 and 16 of the outer would be smaller, in vertical height, than the panels 10,12, 14 and 16 of the inner. Boxes corn- prising telescopic inners and outers can also be fabricated using the blanks of Figures 3 to 6.

Claims

1. A blank for erection into a box, the blank including four panels which form the side walls of the erected box and flaps joined to the four panels, the flaps, in the erected condition of the box, being folded inwardly so as to overlap one another to constitute the top and base of the box, the flaps being formed to define, in the erected condition of the box, formations on the base of the box which interengage with formations on the top of an identical box on which the box is stacked, thereby to inhibit relative lateral movement between the two boxes.

2. A blank as claimed in claim 1, in which some of said flaps have portions thereof cut away to provide said formations.

3. A blank as claimed in claim 1, in which some of the flaps are folded over on themselves to provide said formations.

4. A blank as claimed in claim 1, in which some of said flaps have portions thereof which are compressed to provide said formations.

5. Ablankforerection into a box, the blank being substantially as hereinbefore described with reference to the accompanying drawings.

6. A box when erected from a blank as claimed in any preceding claim.

7. A box comprising four vertical panels which form the side walls thereof and flaps protruding inwardly from the upper and lower edges of said panels, the flaps overlapping one another to form the top and the base of said box, the flaps being formed so as to define formations on the underside of the base of the box which inter-engage with for mations on the top face of the top of an identical box on which the box is stacked thereby to inhibit relative lateral movement between the two boxes.

8. A pair of blanks for erection into telescopic inner and outer sleeves of a box, each blank compris ing four panels which form the side walls of the sleeve and flaps joined to the four panels, the flaps, in the erected condition of the blanks, being folded inwardly so asto overlap one anotherto constitute a base or a top of the respective sleeve, the flaps of one of said blanks being formed to define, in the erected condition of the sleeve, formations which inter-engage with formations defined by the flaps of the other blank when it is erected thereby to inhibit relative lateral movement between two boxes when they are stacked.

9. Aboxcomprising inner and outer telescopic sleeves, each sleeve comprising four vertical panels which form the side walls thereof and flaps protruding inwardly from the panels, the flaps of the inner overlapping one another to form a base for the box and the flaps of the outer overlapping one another to form a top for the box, the flaps being formed so as to define formations on the underside of the base of the box which inter-engage with formations on the top face of the top of an identical box on which the box is stacked thereby to inhibit relative lateral movement between the two boxes.

10. A box substantially as hereinbefore described with reference to the accompanying drawings.