Refillable polyester container and preform for forming the same

Details Refillable polyester container and preform for forming the same Refillable polyester container and preform for forming the same

B - Operations, Transporting

29

C

18/529, 190/26.1

B29C 49/00 (2006.01) B65D 1/02 (2006.01) B29C 49/06 (2006.01)

Patent

CA 2031033

This relates to a returnable/refillable container in the form of a blow molded polyester biaxially oriented bottle wherein the container includes a domed base construction wherein the wall thickness gradually and smoothly increases to a maximum at the center of the dome. This also relates to a specially configurated preform which is blow molded to form the container and a specially configurated blow mold cavity for receiving a preform having a lower axial projection in the form of an elongated gate without crushing.

ontenant retournable et à remplissages multiples en forme de bouteille de polyester moulé par soufflage et orienté biaxalement, lequel contenant comporte une base en forme de dome, dont l'épaisseur des parois s'élargit graduellement et régulièrement pour atteindre un maximum au centre du dôme. L'invention a également trait à une préforme spécialement configurée et moulée par soufflage pour former un contenant, et à un moule à cavité spécialement configurée pour recevoir une préforme ayant une projection axiale inférieure en forme d'entrée allongée sans écrasement.

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