Method of extrusion blow molding of a hollow body

Details Method of extrusion blow molding of a hollow body Method of extrusion blow molding of a hollow body

B - Operations, Transporting

29

C

B29C 49/04 (2006.01) B29D 22/00 (2006.01)

Patent

CA 2291875

The extrusion blow molding of hollow bodies is carried out with a wall thickness program which in addition to varying the gap width over the entire perimeter of the gap in accordance with a first program curve and varying the geometry of the gap in response to a second program curve, automatically enhances a profiling of the preform to increase differences between the thick and thin regions with the variation in geometry when the gap width is greater in a reference value and diminishes the profiling of the preform to decrease such differences when the gap width is less than the reference value.

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