PROCEDE ET DISPOSITIF POUR LA SEPARATION D'ELEMENTS QUI ADHERENT A DES CORPS CREUX REALISES SUIVANT LE PROCEDE DE SOUFFLAGE

摘要

1309035 Separating blow-moulded articles SCHMALBACH-LUBECA-WERKE AG 2 July 1971 [3 July 1970] 31195/71 Heading B5A Blow-moulded articles having a predetermined rupture region formed during blowmoulding by suitable shaping of the blow mould, are ruptured at this point after removal from the blow mould by elevated internal gaseous pressure without mechanical aid to produce an opening requiring no finishing. The article to be ruptured may be two blow moulded containers which may have a flash portion therebetween or a single blow-moulded container having a flash portion at its head. As shown in Fig. 3, the blow moulding 1 having a flash portion 3 joined at rupture line 2 is deposited after moulding into a container 4 on conveyer 5, e.g. a turntable. A device 7 having gripping tongs 6 grips flash 2 and raises it against a blast nozzle 8 having a seal 9. Body portion 1 is blown off back into container 41 and flash 2 separately removed from tongs 6 for the same process on the succeeding blow-moulding.