Apparatus for making a multi-portion mixing element

Details Apparatus for making a multi-portion mixing element Apparatus for making a multi-portion mixing element

1997-09-19

1999-04-06

Ryan, Patrick

Plastic article or earthenware shaping or treating: apparatus

Means to form preform from bulk and means to convolute or...

264295, 264339, 425325, 425465, 425466, B29C 4712

Patent

active

058914870

ABSTRACT:
An apparatus for making a multi-portion mixing element for a static mixer is disclosed. The apparatus includes a base and a split die set having a first die and a second die in axial alignment which are rotatably mounted to the base. Each of the dies have an opening forming an extrusion pattern which mate with respect to the other. The dies are capable of rotating together so that the patterns are in an aligned position during rotation. The dies are also capable of rotating to a misaligned position. An extruder for extruding an extrudable material through the first and second dies is provided and a controller controls the rotational position of the dies during extrusion. The dies are rotated simultaneously during extrusion with the patterns aligned to form a mixing portion of the mixing element and are rotated to a misaligned position to create a space between the mixing portions. A microprocessor may be utilized to control the rotation of the first and second dies and to control the flow of the extrudable material.

REFERENCES:
patent: 2456304 (1948-12-01), Morin
patent: 4181486 (1980-01-01), Saito
patent: 4395210 (1983-07-01), Hama
patent: 4867667 (1989-09-01), Moriyama

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