B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 49/48 (2006.01)
Patent
CA 2642809
The invention concerns a mold base (1) for a mold for blow- or stretch-blow molding thermoplastic containers with petal-shaped base; the mold base (1) comprises several cavities (11) separated by radiating ridges(13) with concave crest surface (14), the bases of the cavities (11) being distributed in a circular outline; the crests (14) of the ridges extending in an arc from the center of the molding cavity (C); each zone (18) intermediate between two consecutive ridges (13) and a corresponding cavity (11) is flat in a plane (P) perpendicular to the axis (12) of the mold base (1); advantageously the cavities (11) are arc-shaped in the diametrical cross-section of the mold base.
Fond (1) de moule pour un moule de soufflage ou étirage-soufflage de récipients (2) thermoplastiques à fond pétaloïde; le fond (1) de moule comporte plusieurs cavités (11) séparées par des dorsales (13) rayonnantes à crête (14) d'étendue concave, les fonds (15) des cavités (11) étant distribués sur un contour circulaire; les crêtes (14) des dorsales s'étendent en arc de cercle à partir du centre de la cavité (C) de moulage; chaque zone (18) intercalaire entre deux dorsales (13) consécutives et une cavité (11) correspondante est plane dans un plan (P) perpendiculaire à l'axe (12) du fond (1) de moule; avantageusement les cavités (11) sont, en coupe diamétrale du fond de moule, en arc de cercle.
Meillerais Sylvain
Penet Laurent
Goudreau Gage Dubuc
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