Plastic article or earthenware shaping or treating: apparatus – Means feeding fluent stock from plural sources to common... – Extrusion shaping means
Patent
1990-03-22
1991-10-08
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Means feeding fluent stock from plural sources to common...
Extrusion shaping means
264349, 366 77, 425208, 4253824, 425522, B29C 4904
Patent
active
050550225
ABSTRACT:
An extrusion device for producing an article of a heterogeneous blend of incompatible polymers, one polymer forming a matrix and the other being in a discontinuous phase within the matrix. The device is used with either side-fed or center-fed multiple parison die heads. The desired heterogeneous resin structure is formed and maintained by a unique extrusion screw and adapter configuration that avoids division of the melt stream to feed the multiple parison die head after formation of the desired resin structure. This is accomplished by a plurality of arcuate flow passages in the terminal portion of the extrustion screw directly feeding each die. The arcuate flow passages are formed by ribs that extend radially inwardly from the extruder barrel toward a flightless terminal portion of the screw shaft and tip. Circulatory resin flow in the arcuate flow passages driven by the screw rotation forms the desired laminar resin structure.
REFERENCES:
patent: 1935050 (1933-11-01), Gordon
patent: 2171095 (1939-08-01), Orsini
patent: 2514841 (1950-07-01), Chase
patent: 2633602 (1953-04-01), Sverdrup
patent: 2810159 (1957-10-01), Teichmann
patent: 3409711 (1968-11-01), Pashak et al.
patent: 3942774 (1976-03-01), Sokolow
patent: 4133460 (1979-01-01), Jerpbak
patent: 4300840 (1981-11-01), Kishihiro
patent: 4429551 (1984-02-01), Hizume
patent: 4945807 (1990-08-01), Loomas et al.
Hoover Universal Inc.
Matney, Jr. William J.
Woo Jay H.
LandOfFree
Multiple parison extrusion device for producing laminar articles does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multiple parison extrusion device for producing laminar articles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple parison extrusion device for producing laminar articles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-254535