Method and device for injection moulding a packaging container portion

• Main Authors: TUVESSON, JOAKIM, MANSSON, PATRIK, ANDERSSON, PAR, ANDREASON, INGMAR
• Format: Patent
• Language: Chinese; English
• Published: 11.10.2013
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a method and a device for injection moulding a thermoplastic packaging container portion connecting with a thermoplastic opening device (16) and connecting with an end portion (20) of a packaging container body (12) which body comprises a thermoplastic material at least in an outer layer. The method comprises the steps of arranging said end portion (20) and at least a portion of said opening device (16) in a cavity (30) formed by bringing together an inner mould part (24) and an outer mould part (26), provide a temperature difference between the opening device (16) and the end portion (20) so that said end portion attains a higher temperature than the opening device (16, inject into the cavity (30) at least one melt (32) of at least a first material, and bring the melt (32) into contact with said opening device (16) and said end portion (20).