Patent ID: 6612829
Filing Date: 2003-09-02
Classification: B29C

Abstract:
In an extrusion die having a first die element and a second die element each having a die lip between which an extrusion gap with a slot-shaped outlet opening extends over a width of the extrusion die, wherein at least one of the first and second die elements has an adjusting device for adjusting one die lip relative to another die lip while changing the width of the outlet opening, the adjusting device having an adjusting bar arranged in a receiving groove of one of the first and second die elements and displaceable in a width extension in a displacement device, the adjusting bar having at least one sliding cam laterally projecting beyond the adjusting bar, and each sliding cam guided in a control groove of one of the first and second die elements, wherein the control groove runs obliquely with respect to a displacement direction of the adjusting bar, so that when the adjusting bar is displaced in the displacement direction with engagement of the at least one sliding cam in the control groove the die lip extending transversely is displaced, the improvement comprising: at least one of the adjusting bar (4) and the at least one sliding cam (40) of the adjustment bar (4) arranged respectively with interposition of a roller chain (5, 6) in one of the receiving groove (211) and the control groove (220) of the die element (2).