PROCESS FOR THE PRODUCTION OF HOLLOW BODIES OF THERMOPLASTIC MATERIAL BY EXTRUSION BLOW MOLDING
摘要
The invention concerns a process for the production of hollow bodies of thermoplastic material by extrusion blow molding. In the process according to the invention continuous extrusion of at least two preforms in web form of plasticized material is effected by means of a plurality of extrusion devices. The preforms are jointly shaped to form a hollow body in the still plastic condition, that is to say in the first heat, within a multipart tool forming a mold cavity. In that case a wall thickness profile is imparted to at least one preform during the extrusion operation independently of the respective other preform by continuous nozzle gap adjustment during the extrusion operation.
申请公布号
CA2806720(A1)
申请公布日期
2007.12.13
申请号
CA20072806720
申请日期
2007.05.23
申请人
KAUTEX TEXTRON GMBH & CO. KG
发明人
BORCHERT, MATTHIAS;EULITZ, DIRK;WOLTER, GERD;KRAEMER, TIMO;LORENZ, HARALD;ECKHARDT, JOACHIM;FROITZHEIM, THOMAS