Base for plastic container

Details Base for plastic container Base for plastic container

B - Operations, Transporting

65

D

B65D 1/02 (2006.01)

Patent

CA 2460434

A moulded polymeric container (10) includes a body portion (12) having a sidewall (18) and an integral champagne type base (16). The base (16) includes a lower end (20) that defines an annular contact ring (22) for supporting the container (10) with respect to an underlying surface. An annular step ring (24) is defined immediately radially inwardly of the annular contact ring (22) and has a radial length LS. The base (16) further has a central push-up area (26) and a generally concave transition region (28) interposed between the central push-up area (26) and the annular contact ring (22). The transition region (28) further includes a plurality of integrally moulded radially extending ribs (30), each of the ribs (30) having a length LR. According to one advantageous aspect of the invention, the ratio LR/LS is within a range of about 1.0 to about 4Ø

L'invention concerne un conteneur (10) polymère moulé comprenant une partie corps (12) pourvue d'une paroi (18) et d'un socle (16) solidaire de type bouteille de champagne. Ce socle (16) comprend une extrémité inférieure (20) qui définit un anneau de contact (22) servant à soutenir le conteneur (10) par rapport à une surface sous-jacente. Un anneau en gradin (24) est défini de manière immédiatement radiale vers l'intérieur de l'anneau de contact (22), et présente une longueur radiale L¿S?. Le socle (16) selon l'invention comprend également une zone d'enfoncement (26) centrale et une zone de transition (28) généralement concave, interposée entre la zone d'enfoncement (26) centrale et l'anneau de contact (22). La zone de transition (28) comprend également une pluralité de nervures (30) moulées solidaires s'étendant de manière radiale, chaque nervure (30) présentant une longueur L¿R?. Selon un aspect avantageux de la présente invention, le rapport L¿R?/L¿S? est compris entre environ 1,0 et environ 4,0.

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