Plastic article or earthenware shaping or treating: apparatus – Means feeding fluent stock from plural sources to common... – Extrusion shaping means
Patent
1992-11-04
1994-03-29
Nguyen, Khanh
Plastic article or earthenware shaping or treating: apparatus
Means feeding fluent stock from plural sources to common...
Extrusion shaping means
4251331, 425462, B29C 4706, B29C 4726
Patent
active
052979466
ABSTRACT:
A multilayer parison extruder includes a cylinder; an annular piston movably fitted in the cylinder; a material accumulation chamber in which the piston is moved; a material conduction chamber communicating with the accumulation chamber; an annular multilayer head provided in the conduction chamber; and a die slot provided under the conduction chamber. The extruder further includes a main material extruder for supplying a main material to the accumulation chamber; and auxiliary material extruders for supplying the auxiliary materials to the multilayer head. The extruder is characterized in that pairs of opposed feed ports are provided in the multilayer head and communicate with the auxiliary material extruders. At least one pair of the inlet ports is provided for each of a pair of arc-shaped passages which are for the auxiliary materials. The arc-shaped passages are connected to the feed ports so that each of the arc-shaped passages extends in opposite directions by nearly equal distances from the corresponding feed ports along the circumference of the multilayer head.
REFERENCES:
patent: 4149839 (1979-04-01), Iwawaki et al.
patent: 4167383 (1979-09-01), Murakami et al.
patent: 4249875 (1981-02-01), Hart et al.
patent: 4302170 (1981-11-01), Goron
patent: 4403934 (1983-09-01), Rasmussen et al.
patent: 4548569 (1985-10-01), Pitigliano et al.
patent: 4717326 (1988-01-01), Motonaga et al.
patent: 4758144 (1988-07-01), Becker
patent: 4978290 (1990-12-01), Fukuhara
Fukuda Hideaki
Fukuhara Keiji
Kagitani Toshio
Yoshida Toshiji
Mazda Motor Corporation
Nguyen Khanh
The Japan Steel Works Ltd.
LandOfFree
Multilayer parison extruder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multilayer parison extruder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multilayer parison extruder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-787683