| 摘要 |
<p>A blank for forming an article such as a carton is formed from a plural layer sheet material, one of whose layers can function as a liner. The liner is arranged to seal at the corners of the article, when the article is formed. To allow the blank to be folded, the liner is arranged to delaminate from the remainder of the material by means of cuts (14 to 17) which extend only through the liner layer but not the remainder of the material, and cuts (18 to 21) which extend through the remainder of the material but not the liner layer. The initial delamination can be controlled more accurately by offsetting the hinge lines (40 to 43) between body panels from the cuts (18 to 21) which define the end closure flaps. The delaminated liner is incorporated in the corner to seal it when the article is erected. The blank may be for forming a carton with all corners sealed. The material may be a laminate of cardboard, paperboard and the like and a layer of liner material, and the liner may be formed from a plastics film, such as polyethylene. <IMAGE></p> |
