PREFORMA ASSEMBLATA A DOPPIA PARETE, E PROCEDIMENTO PER LA REALIZZAZIONE DELLA STESSA

An assembled preform (1) is provided for the making of a double-walled blown container, comprising a first external preform (10) which comprises a neck part (2) having an outer region (4) which includes a threaded region (5) and an inner region (3), and a second internal preform (11) arranged inside...

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Bibliographische Detailangaben
1. Verfasser:	DE PASQUALE, MAURO
Format:	Patent
Sprache:	ita
Schlagworte:	MAKING GRANULES OR PREFORMS PERFORMING OPERATIONS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	An assembled preform (1) is provided for the making of a double-walled blown container, comprising a first external preform (10) which comprises a neck part (2) having an outer region (4) which includes a threaded region (5) and an inner region (3), and a second internal preform (11) arranged inside said first external preform (10), said internal preform (11) having a neck region (12) for cooperating in a locked manner with said inner neck region (3) of said external preform (10), and wherein between said external preform (10) and said internal preform (11) it is defined an inner volume (6) of interspace between the external preform (10) and the internal preform (11 ), said inner volume (6) being configured for the containing of a gas, and it is characterized in that said neck region (12) of said internal preform (11) comprises locking means (13,14,16) for cooperating by a locking interference with said inner region (3) of said neck part (2) of said external preform (10) when said internal preform (11) it is inserted in said external preform (10).