Carton closure structure

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 71/36 (2006.01) B65D 71/00 (2006.01)

Patent

CA 2464719

An end closure structure for a tubular structure has lines of joinder with closure flaps that are disposed to minimize the deformable area of an end wall by creating a tight structure that is less prone to blousing or bulging. The length of top (22) and bottom (26) panels is less than the length of side panels (24). The side panels terminate in weakened lines of joinder (55) that are arced toward adjoining side flaps (25). Almond-shaped transition panels (60) further facilitate a snug, secure end closure that is not easily deformed by bulging or blousing.

L'invention concerne une structure de fermeture d'extrémité conçue pour une structure tubulaire, qui est pourvue de lignes de jonction avec des volets de fermeture disposés de manière à réduire la zone déformable d'une paroi d'extrémité par la création d'une structure étanche moins sujette au bombage. Les panneaux supérieur (22) et inférieur (26) ont une longueur inférieure à celle des panneaux latéraux (24), ces derniers se terminant en lignes de jonction d'affaiblissement (55) qui sont recourbées vers les volets de jonction latéraux (25). Des panneaux de transition en amande (60) facilitent en outre une fermeture d'extrémité ajustée et sûre qui ne se déforme pas facilement par bombage.

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