GB2109343A - Stackable lidded boxes - Google Patents

Abstract

A box 10 is provided with a lid 11 made from paper board which lid is provided with upstanding walls 117-114 that co-operate in use with a substantially identical overlying box in a stack to retain it against relative movement. <IMAGE>

Description

SPECIFICATION Packaging This invention relates to packaging, and more especially to the securing of a plurality of boxes, made from paper board, card or corrugated paper board hereinafter referred to under the single term paper board, to a pallet or similar base structure allowing the boxes to be transported in bulk without substantial damage to the individual boxes.

Boxes made from corrugated board for example have considerable strength in compression at their corners but there is inter alia a zone of weakness at the central part of the side members. In consequence the loading assembly of a plurality of such boxes onto a pallet may be effected in such a manner as partly to disrupt or even to destroy boxes in the central parts thereof especially in the lower boxes of a bulk package.

This serious disadvantage is overcome according to one aspect of the present invention by the provision of a box and fitting lid made from paper board wherein the lid is provided with upstanding walls that co-operate in use with a substantially identical box to accept and retain it against reiative movement of box and lid.

According to a further aspect of the invention there is provided a method of packaging wherein a plurality of boxes and fitting lids as described above are stacked vertically each box, except for that in the bottom layer, being retained by the upstanding walls of the cooperating lid upon which it is placed.

The invention will be more fully understood from the following description given by way of example only with reference to the several figures of the accompanying drawing in which: Figure 1 is a view in oblique perspective of a box of the known art and Figs. 1 A, 1 B are views of two different forms of packaging.

Figure 2 is a view in oblique perspective of a box and fitting lid of the present invention.

Figure 3A shows superimposed one form of stapled or glued blanks from which the box and the fitting lid of Fig. 2 are erected.

Figure 3B shows in part an alternative tablocking blank.

Figure 4 shows in oblique perspective a further construction of the invention.

In Fig. 1 a simple rectangular prismatic box is shown made from paper board. The corners are generally glued or stapled together alternatively they may be locked by locking tabs.

The strength in compression is great at the corner zones A, B, C and D but low in comparison on the centre zones E and F.

If boxes of identical form and size are stacked on a pallet as shown in Fig. 18 little damage is done in the packaging to the individual boxes, but if the boxes vary in form and size or identical boxes are stacked as shown in Fig. 1c then damage to the individual boxes especially at central zones E,F,; E2F2; E3E3 readily occurs.

In Fig. 2 a rectangular prismatic box 10 of the present invention is shown to possess a fitting lid 11 having upstanding corners 11,, 112, 113, 114 that accept and retain another box of substantially identical form and size (not shown) within said upstanding corners and demand that said identical another box is oriented in such a way as not to put the zones of weakness at E4 F4 under duress in packaging.

A remarkably strong box is formed when the lid dimension Ii Fig. 2 is made to equal the box dimension b, so that the lower edge 12 of the lid is at the base b2 of Fig. 2.

In Fig. 3A a blank 10, from which the box 10 (Fig. 2) is erected has a simple rectangular form with cuts shown in thick black lines and score lines in dotted lines.

For convenience the lid blank 11, of Fig. 3A is placed above the box blank 10, so that no dimensioning of the blanks is necessary to convey the essential commensuration of the box and lid in the illustration.

The lid is secured when erected by glue or by staples for example, but a tab locking lid may be used as shown in Fig. 3,.

The lid blank upon erection forms without loss of paper board (except for the cuts) a lid having upstanding corners (Fig. 2). The blank is a single piece of paper board 11, of rectangular form having two pairs of opposed orthogonal inboard crease lines C,C,; C2C2; C2, C4 each line parallel to an edge E,, E2, E3, E4 of the rectangular form; one pair of opposed lines C,C,; C2C2 extending the whole length of L, of the rectangular form and the other pair of opposed lines C3, C4 terminating in stepped cuts C5, C6, C7, C8 paralled to and inboard of the lines that they terminate to provide without loss of paper board upstanding edges 11,, 112, 113, 114(Fig. 2)) of the lid when said lid is erected.

A single rectangular prismatic box 102 of large size for example Fig. 4 may have its lid 112 commensurate in size with that of a pallet 12. In such a construction the lid 112 may be used to register the box 103 with the pallet. If required an identical fitting lid 11 3 will allow another box (not shown) to be placed upon the fitting lid 113 of box 1 02.

1. A box and fitting lid made from paper board wherein the lid is provided with upstanding walls that co-operate in use with a substantially identical box to accept and retain it against relative movement of box and lid.

2. The box and fitting lid as claimed in Claim 2 wherein the upstanding walls are at corners only.

3. The box and fitting lid as claimed in

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (9)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Packaging This invention relates to packaging, and more especially to the securing of a plurality of boxes, made from paper board, card or corrugated paper board hereinafter referred to under the single term paper board, to a pallet or similar base structure allowing the boxes to be transported in bulk without substantial damage to the individual boxes. Boxes made from corrugated board for example have considerable strength in compression at their corners but there is inter alia a zone of weakness at the central part of the side members. In consequence the loading assembly of a plurality of such boxes onto a pallet may be effected in such a manner as partly to disrupt or even to destroy boxes in the central parts thereof especially in the lower boxes of a bulk package. This serious disadvantage is overcome according to one aspect of the present invention by the provision of a box and fitting lid made from paper board wherein the lid is provided with upstanding walls that co-operate in use with a substantially identical box to accept and retain it against reiative movement of box and lid. According to a further aspect of the invention there is provided a method of packaging wherein a plurality of boxes and fitting lids as described above are stacked vertically each box, except for that in the bottom layer, being retained by the upstanding walls of the cooperating lid upon which it is placed. The invention will be more fully understood from the following description given by way of example only with reference to the several figures of the accompanying drawing in which: Figure 1 is a view in oblique perspective of a box of the known art and Figs. 1 A, 1 B are views of two different forms of packaging. Figure 2 is a view in oblique perspective of a box and fitting lid of the present invention. Figure 3A shows superimposed one form of stapled or glued blanks from which the box and the fitting lid of Fig. 2 are erected. Figure 3B shows in part an alternative tablocking blank. Figure 4 shows in oblique perspective a further construction of the invention. In Fig. 1 a simple rectangular prismatic box is shown made from paper board. The corners are generally glued or stapled together alternatively they may be locked by locking tabs. The strength in compression is great at the corner zones A, B, C and D but low in comparison on the centre zones E and F. If boxes of identical form and size are stacked on a pallet as shown in Fig. 18 little damage is done in the packaging to the individual boxes, but if the boxes vary in form and size or identical boxes are stacked as shown in Fig. 1c then damage to the individual boxes especially at central zones E,F,; E2F2; E3E3 readily occurs. In Fig. 2 a rectangular prismatic box 10 of the present invention is shown to possess a fitting lid 11 having upstanding corners 11,, 112, 113, 114 that accept and retain another box of substantially identical form and size (not shown) within said upstanding corners and demand that said identical another box is oriented in such a way as not to put the zones of weakness at E4 F4 under duress in packaging. A remarkably strong box is formed when the lid dimension Ii Fig. 2 is made to equal the box dimension b, so that the lower edge 12 of the lid is at the base b2 of Fig. 2. In Fig. 3A a blank 10, from which the box 10 (Fig. 2) is erected has a simple rectangular form with cuts shown in thick black lines and score lines in dotted lines. For convenience the lid blank 11, of Fig. 3A is placed above the box blank 10, so that no dimensioning of the blanks is necessary to convey the essential commensuration of the box and lid in the illustration. The lid is secured when erected by glue or by staples for example, but a tab locking lid may be used as shown in Fig. 3,. The lid blank upon erection forms without loss of paper board (except for the cuts) a lid having upstanding corners (Fig. 2). The blank is a single piece of paper board 11, of rectangular form having two pairs of opposed orthogonal inboard crease lines C,C,; C2C2; C2, C4 each line parallel to an edge E,, E2, E3, E4 of the rectangular form; one pair of opposed lines C,C,; C2C2 extending the whole length of L, of the rectangular form and the other pair of opposed lines C3, C4 terminating in stepped cuts C5, C6, C7, C8 paralled to and inboard of the lines that they terminate to provide without loss of paper board upstanding edges 11,, 112, 113, 114(Fig. 2)) of the lid when said lid is erected. A single rectangular prismatic box 102 of large size for example Fig. 4 may have its lid 112 commensurate in size with that of a pallet 12. In such a construction the lid 112 may be used to register the box 103 with the pallet. If required an identical fitting lid 11 3 will allow another box (not shown) to be placed upon the fitting lid 113 of box 1 02. CLAIMS

1. A box and fitting lid made from paper board wherein the lid is provided with upstanding walls that co-operate in use with a substantially identical box to accept and retain it against relative movement of box and lid.

2. The box and fitting lid as claimed in Claim 2 wherein the upstanding walls are at corners only.

3. The box and fitting lid as claimed in Claim 1 or Claim 2 wherein the form of both box and lid is substantially that of a rectangular prism.

4. A lid blank that upon erection forms when glued, stapled or stitched a lid with upstanding corners for the box and fitting lid of Claim 3, said blank being substantially as shown in Fig. 3 of the accompanying drawings.

5. A lid blank that upon erection forms when locked by locking tabs a lid upstanding corners for the box and fitting lid of Claim 3, said blank being substantially as shown in Fig. 5. of the accompanying drawings.

6. A lid blank for the erection of a lid of the box and lid as claimed in claim 3 wherein the blank is a single piece of paper board of rectangular form having two pairs of opposed orthogonal inboard crease lines each line parallel to an edge of the rectangular form; one pair of opposed lines extending the whole length of the rectangular form and the other pair of opposed lines terminating in stepped cuts parallei to and inboard of the lines that they terminate to provide without loss of paper board upstanding edges of the lid when said blank is erected.

7. A method of packaging as herein described wherein a plurality of boxes and fitting lids as claimed in any one of claims 1 to 3 are stacked vertically each box, except for that on the bottom layer, being retained by the upstanding walls of the co-operating lid upon which it is placed.

8. The method of packaging as claimed in Claim 7, wherein the lid is inverted and made to register with a pallet.

9. A box and fitting lid constructed and arranged substantially as herein described and as shown in Fig. 2 of the accompanying drawings.

1 0. A method of packaging as hereinbefore described and as shown in the Figures of the accompanying drawings.