Box lid and blank therefor

Abstract

Some embodiments relate to a box lid blank comprising side panels and end panels adapted to be connected to form a rectangular structure, side flaps and end flaps extending from the respective side panels and end panels and connected thereto along fold lines or score lines, folding portions of said end flaps being adapted to be secured to opposed facing portions of the side flaps and to extend outwardly from the side and end panels when the rectangular structure is folded flat, said end flaps and the secured folding portions being shaped such that the secured folding portions draw the end and side flaps inwardly towards a closed position with respect to the side and end panels when the rectangular structure is formed from its folded flat condition to thereby form a lid.

1 . A box lid blank comprising:
 a first panel having a first flap extending in a first direction away from the first panel, the first flap having a first face, an opposed second face, an outer edge, a first side edge and an opposed second side edge;   a second panel coupled to the first panel and having a second flap extending in the first direction, the second flap having a first face, an opposed second face, an outer edge, a first side edge and an opposed second side edge;   a third panel coupled to the second panel and having a third flap extending in the first direction, the third flap having a first face, an opposed second face, an outer edge, a first side edge and an opposed second side edge;   a fourth panel coupled to the third panel and having a fourth flap extending in the first direction, the fourth flap having a first face, an opposed second face, an outer edge, a first side edge and an opposed second side edge; and   a coupling portion for coupling the first panel to the fourth panel;   wherein the first flap has a first score extending at a first angle of about 45° from adjacent a base of the first flap first side edge to the first flap outer edge, a first folding portion being defined by the first score, the first flap first side edge and the first flap outer edge;   wherein the third flap has a second score extending at a second angle of about 45° from adjacent a base of the third flap first side edge to the third flap outer edge, a second folding portion being defined by the second score, the third flap first side edge and the third flap outer edge;   wherein the blank comprises securing portions positioned on at least one of the first and second flaps and on at least one of the third and fourth flaps so that, when the first panel and the second panel are folded so that the first flap first face faces the second flap first face and the unfolded first folding portion overlies part of the second flap and the third panel and the fourth panel are folded so that the third flap first face faces the fourth flap first face and the unfolded second folding portion overlies part of the fourth flap, the first folding portion is securable to the second flap and the second folding portion is securable to the fourth flap; and   wherein when the first and fourth panels are coupled, the first folding portion is secured to the second flap and the second folding portion is secured to the fourth flap, the first folding portion is secured to the second flap and the second folding portion is secured to the fourth flap, the blank is erectable into a box lid in which the first, second, third and fourth panels form side walls of the box lid, the second faces of the second and fourth panels face generally outwardly, the first folding portion is folded toward the first panel second face and the second folding portion is folded toward the third panel second face.   
   
   
       2 . The blank of  claim 1 , wherein the first flap second side edge and the third flap second side edge are angled at an obtuse angle relative to the first flap outer edge and third flap outer edge, respectively. 
   
   
       3 . The blank of  claim 2 , wherein the obtuse angle is between 105° and 125°. 
   
   
       4 . The blank of  claim 1 , wherein the first flap has a third score extending at a third angle from adjacent a base of the first flap second side edge to the first flap outer edge, a third folding portion being defined by the third score, the first flap outer edge and the first flap second side edge. 
   
   
       5 . The blank of  claim 4 , wherein the third angle is between 55° and 75° relative to a line generally parallel to the first flap outer edge. 
   
   
       6 . The blank of  claim 1 , wherein the third flap has a fourth score extending at a fourth angle from adjacent a base of the third flap second side edge to the third flap outer edge, a fourth folding portion being defined by the fourth score, the third flap outer edge and the third flap second side edge. 
   
   
       7 . The blank of  claim 6 , wherein the fourth angle is between 55° and 75° relative to a line generally parallel to the third flap outer edge. 
   
   
       8 . The blank of  claim 1 , wherein when the first and fourth panels are coupled, the first folding portion is secured to the second flap and the second folding portion is secured to the fourth flap, the blank is erectable into the box lid by bringing a first junction of the first and second panels and a second junction of the third and fourth panels toward each other. 
   
   
       9 . The blank of  claim 8 , wherein the blank is erectable into the box lid in a single action. 
   
   
       10 . The blank of  claim 8 , wherein by bringing the first junction and the second junction toward each other at least part of the first flap second side edge frictionally engages and slides against the fourth flap second face and at least part of the third flap second side edge frictionally engages and slides against the second flap second face. 
   
   
       11 . The blank of  claim 1 , wherein the first, second, third and fourth panels are free of flaps extending in a second direction opposite to the first direction. 
   
   
       12 . The blank of  claim 1 , wherein a corner of each of the first and third flaps is chamfered opposite respective first side edges of the first and third flaps. 
   
   
       13 . The blank of  claim 1 , wherein the securing portions comprise adhesive. 
   
   
       14 . A pre-formed box lid comprising the box lid blank of  claim 1 , wherein the first and fourth panels are coupled to each other by the coupling portion, the first folding portion is secured to the second flap and the second folding portion is secured to the fourth flap. 
   
   
       15 . A box lid formed from the pre-formed box lid of  claim 14 . 
   
   
       16 . A box lid formed from the box lid blank of  claim 1 . 
   
   
       17 . A box lid blank comprising side panels and end panels adapted to be connected to form a rectangular structure, side flaps and end flaps extending from the respective side panels and end panels and connected thereto along fold lines or score lines, folding portions of said end flaps being adapted to be secured to opposed facing portions of the side flaps and to extend outwardly from the side and end panels when the rectangular structure is folded flat, said end flaps and the secured folding portions being shaped such that the secured folding portions draw the end and side flaps inwardly towards a closed position with respect to the side and end panels when the rectangular structure is formed from its folded flat condition to thereby form a lid. 
   
   
       18 . A pre-formed box lid formed from the box lid blank of  claim 17 , wherein the pre-formed box lid is erectable into the lid. 
   
   
       19 . A box lid formed from the pre-formed box lid of  claim 18 .