Patent ID: 11884031
Assignee: 9T LABS AG
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B

Claim 18:
19. A method for producing an extrudate, the method comprising:
introducing a crude extrudate into a pultrusion unit;
deforming the crude extrudate in the pultrusion unit wherein, during movement of the crude extrudate through a pultrusion channel of the pultrusion unit, an outer side of the crude extrudate rests on at least one shaping wall of the pultrusion unit;
discharging the deformed crude extrudate from the pultrusion unit;
introducing the crude extrudate discharged from the pultrusion unit into an extrusion unit; and
deforming the crude extrudate in the extrusion unit and discharging the crude extrudate that has been reshaped to form the extrudate from an opening of the extrusion unit;
wherein during movement of the crude extrudate through the protrusion channel, in a cross-section through the crude extrudate perpendicular to a movement direction of the crude extrudate in the pultrusion channel, the outer side of the crude extrudate rests on at least one shaping wall of the pultrusion channel and a remaining second portion of the outer side of the crude extrudate faces an open side of the pultrusion channel, and wherein a distance between a first shaping wall and a second shaping wall of the at least one shaping wall is varied perpendicular to the movement direction of the crude extrudate in the pultrusion channel, so that a cross-sectional area available to the crude extrudate between the first and second shaping wall in the pultrusion channel is varied;
further wherein the crude extrudate is deflected by at least one roller at an end of the pultrusion unit exerting a force on the crude extrudate in a direction from the outer side towards the shaping wall so that during the discharging, a tensile force is applied to the crude extrudate so that fibres in the pultrusion channel have a tensile force in the pultrusion unit, and so that during the discharging, the crude extrudate is oriented at an angle between 20° and 80° to a plane perpendicular to the movement direction of the crude extrudate in the pultrusion channel.