Patent · US Expired

Multiple extrusion head extrusion blow moulding apparatus

US4179251A · kind A · utility

23Cited by

6References

12Claims

0Family size

Assignee

Kautex Werke Reinold Hagen Aktiengesellschaft · DE

Inventors

Dieter Hess · Rheinbach, DE
Carsten Friedrichs · Bad Honnef, DE
Werner Daubenbuchel · Bensberg, DE

Key dates

Filing date	Dec 21, 1976
Grant date	Dec 18, 1979
Priority date	—
Expiry date	Dec 21, 1996

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C2948/92961
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Multiple extrusion head extrusion-blow moulding apparatus, preferably using a common continuously operating extrusion conveyor, in which apparatus the various extrusion heads have their accumulator pistons driven for identical and simultaneous movement during the extrusion strokes either by means of a common drive means or by separate drive means each controlled from a common control means. Common control may also be exercised over the charging stroke of the accumulator piston. Closed loop control over the wall thickness in dependence upon the final length of the parison, as well as open loop control over the wall thickness in response to a desired program may be imposed simultaneously on the extrusion orifice gap width.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.