B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 49/46 (2006.01) B29C 49/12 (2006.01) B29C 49/06 (2006.01)
Patent
CA 2381273
A device is described for manufacturing containers (1) from a plastics material which can be formed by stretch-blowing with a mould, the internal space of which corresponds to the finished container (1), which is held by its open end (7) by a receiving portion (4), wherein lines (9, 10) connected to a metering unit are provided on the receiving portion (4), a moveable stretching die (11) is guided axially through the receiving portion (4), and an ignition means is arranged for igniting an explosive gas mixture inside the container, and wherein heating and cooling means are provided. In order to manufacture plastics containers with an improved appearance, for example, with largely clearly transparent walls, without a large additional expense being necessary, according to the invention it is provided that the receiving portion (4), at its end opposite the container (1) can be engaged in a flowable medium- tight manner with a distributor module (14), through which the stretching die (11) is moveably passed axially extending the receiving portion (4), and on which at least one connector for flowable media (8, 10, 21) is fitted, in that the at least one connector for flowable media (9, 10, 21) can be closed off in order to seal the device-side interior space (22), and in that the ignition means (12) is fitted in the device-side interior space (22).
Dispositif permettant de fabriquer des récipients (1) en plastique déformable par étirage-gonflage, doté d'un moule dont l'espace interne correspond au récipient fini (1) qui est maintenu au niveau de son extrémité ouverte (7) par un logement (4). Ledit logement (4) comporte des conduites (9, 10) reliées à un doseur. Un poinçon d'étirage (11) est mobile axialement dans le logement (4). Un dispositif d'allumage sert à allumer un mélange gazeux explosif à l'intérieur du récipient. Le dispositif permettant de fabriquer des récipients comporte également des dispositifs de chauffe et de refroidissement. Selon la présente invention, le logement (4) peut être raccordé de manière étanche aux fluides, au niveau de son extrémité opposée au récipient, à un bloc de distribution (14) à travers lequel le poinçon d'étirage (11) est mobile dans le prolongement axial du logement (4) et qui comporte au moins un raccordement (9, 10, 21) pour fluide. Ledit raccordement (9, 10, 21) pour fluide au moins peut être fermé pour étanchéifier l'espace interne (22) du côté dispositif et le dispositif d'allumage est placé dans l'espace interne (22) du côté dispositif. Le dispositif selon la présente invention permet de fabriquer des récipients présentant un meilleur aspect, par exemple à paroi largement transparente, sans qu'il soit nécessaire d'engager de grandes dépenses supplémentaires.
Chatard Dominique
Fuchs Jens
Kindinger Hans
Kuhn Rolf
Riedel Thomas
Riches Mckenzie & Herbert Llp
Tetra Laval Holdings & Finance S.a.
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