| 摘要 |
<p>A carton (8) formed of paperboard coated with one or more liquid impervious layers and particularly adapted to aseptically package a liquid foodstuff such as milk or fruit juice. The carton is formed directly from a continuous web, wherein the paper fibers in the web are oriented in the direction that will parallel the horizontal axis of the formed and filled carton. The carton is in the form of a rectangular parallelepiped having a fin seam (26) running along its two side walls (16, 18) and its bottom wall (20). Each of the four narrowest edges carries a triangular flap ear or corner fold (30, 32, 34, 36) normally folded against the side wall of this carton. One (30) of the top triangular ears carries a pair of score or perforated lines (60, 62) which extend into the top wall this ear swinging away from the carton upon opening, to thereby define a reclosable pour opening upon rupture of the score lines. The carton of this invention exhibits a flat top (22), free of a fin seam, and hence, is better suited for graphics (e.g. trademarks, brand names, color combinations), than other prior art containers which have a fin seam on their top surface. In the embodiment having perforated lines on the triangular ear, the perforated lines are so formed that no perforation crosses or intersects a fold line, thereby inhibiting delamination of the layers coated on the paperboard.</p> |
