B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/514
B29C 47/20 (2006.01) B29C 47/06 (2006.01) B29C 47/22 (2006.01) B29C 49/22 (2006.01) B29C 49/04 (2006.01)
Patent
CA 1328154
ABSTRACT OF THE DISCLOSURE In a process and apparatus for the production of hollow bodies from thermoplastic material, having a wall comprising a laminate formed by at least first and second layers, by means of extrusion blow molding, a preform having a wall structure with a suitable number of layers is first produced in a batch-wise procedure using an extrusion head. The material required to produce the preform is guided in the extrusion head in such a way that disturbed portions of the laminate pass into the waste flash portions at the ends of the hollow body produced from the preform, so that the wall of the finished hollow body is devoid of disturbed laminate portions of that kind.
611979
Daubenbuchel Werner
Eiselen Otto
Friedrichs Karsten
Kiefer Erich
Klusener Peter
Krupp Kautex Maschinenbau Gmbh
Marks & Clerk
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