Paperboard container having curvilinear portion

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 3/02 (2006.01) B31B 43/00 (2006.01) B31C 11/02 (2006.01) B31F 7/00 (2006.01)

Patent

CA 2587829

The present invention relates to composite paperboard containers (100) and methods for making the same. Specifically, the present invention includes a curvilinear container (100)comprising a tubular body formed convolutely or via spiral winding from a single paperboard ply or multiple plies as commonly known in the art. The tubular body includes opposing ends (120, 121) that can be sealed by paperboard, metallic, plastic, or membrane-type end closures (125, 126) so as to preserve the consumable products typically enclosed by the container. The curvilinear container includes a tubular body having a curvilinear portion (140) wherein the diameter of the tubular body varies along the length of the curvilinear portion. A plurality of radially projecting ribs (149) are distributed about the circumference of the curvilinear portion (140) as collection areas for excess tube wall material and thereby accommodate reduction of the tube wall diameter within the curvilinear portion (140).

La présente invention concerne des récipients en carton composite (100) ainsi que des procédés pour réaliser ces mêmes récipients. De manière spécifique, la présente invention comprend un récipient curvilinéaire (100) comprenant un corps tubulaire formé de façon alvéolaire ou par un enroulement en spirale à partir d~une couche unique de carton ou de plusieurs couches comme il est connu communément dans l~art. Le corps tubulaire comprend des extrémités opposées (120, 121) pouvant être fermées par des fermetures d~extrémité de type membrane, plastique, métallique ou carton (125, 126) de façon à conserver les produits consommables contenus dans le récipient. Le récipient curvilinéaire comprend un corps tubulaire ayant une partie curvilinéaire (140) dans laquelle le diamètre du corps tubulaire varie le long de la longueur de la partie curvilinéaire. Une pluralité d~épaulements en saillie radiale (149) sont répartis autour de la circonférence de la partie curvilinéaire (140) faisant office de surfaces collectrices pour la matière excédentaire de la paroi du tube et permettant ainsi une réduction du diamètre de la paroi du tube à l~intérieur de la partie curvilinéaire (140).

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