Mould for producing bottle caps with tucked-in tabs, and...

Details Mould for producing bottle caps with tucked-in tabs, and... Mould for producing bottle caps with tucked-in tabs, and...

B - Operations, Transporting

29

C

B29C 45/44 (2006.01) B29C 45/00 (2006.01) B65D 41/34 (2006.01)

Patent

CA 2244151

A mould for producing a bottle cap (1) comprising a cylindrical skirt (3) provided with at least one screw thread (4), a bottom wall (2) and a tamper-evident ring (6) connected to the free end of the skirt via frangible bridge portions. The mould includes a movable portion or mould bottom (20), a stripper portion or stripping ring (21) and a core (22) designed to be removed by translation without rotation. At least one notch and/or projection is provided in at least two separate positions at the lower edge of the skirt on the side of the stripping ring (21) that faces the bottom of the mould (20), whereby a mortise-and-tenon joint is formed between the skirt (3) and the stripping ring (21) during moulding of the cap (1) and its removal from the mould.

Ce moule est destiné à former un bouchon (1) comportant une jupe cylindrique (3) munie d'au moins un filet de vissage (4), un fond (2) et une bague d'inviolabilité (6) reliée à l'extrémité libre de la jupe par des pontets ruptibles. Il présente une partie mobile ou fond de moule (20), une partie dévêtisseuse ou bague dévêtrice (21) et un noyau (22) destiné à être retiré par un mouvement de translation, sans rotation. La bague dévêtrice (21) présente du côté faisant face au fond du moule (20), au niveau du bord inférieur de la jupe et en au moins deux endroits distincts, au moins une encoche et/ou au moins une saillie afin de créer une liaison tenon/mortaise entre la jupe (3) et la bague dévêtrice (21) lors des moulage et démoulage du bouchon (1).

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