B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 49/18 (2006.01) B29C 49/36 (2006.01) B29C 49/54 (2006.01) B29C 49/06 (2006.01)
Patent
CA 2246743
A container (5) such as a bottle made of thermoplastic material and provided with a bottom wall having an inwardly convex curved central portion (3) is disclosed. The container is produced by blow moulding a blank (4) with at least one incipient bottom recess (3) in a finishing mould (15a, 15b, 11) of which the bottom wall (11) has an arched central portion (10) substantially matching the recess in the bottom of the container to be produced. Said container is produced by causing relative rotation of the central portion (10) and the blank (4) when said central portion is positioned in the recess in the bottom of the blank.
Pour obtenir un récipient tel qu'une bouteille en matériau thermoplastique, présentant un fond avec une partie centrale incurvée, à convexité tournée vers l'intérieur, par soufflage d'une ébauche sur laquelle au moins une amorce du creux du fond est présente, dans un moule de finition dont le fond présente une partie centrale votée, correspondant sensiblement au creux du fond du récipient à obtenir, il est proposé de provoquer une rotation relative de la partie centrale et de l'ébauche lors du positionnement de ladite partie centrales dans le creux du fond de l'ébauche.
Marks & Clerk
Sidel S.a.
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