Plastic article or earthenware shaping or treating: apparatus – With separate and distinct upstream agitating or kneading means – Within pressurizing chamber
Patent
1984-04-04
1987-09-22
Hoag, Willard E.
Plastic article or earthenware shaping or treating: apparatus
With separate and distinct upstream agitating or kneading means
Within pressurizing chamber
2221465, 222272, 366 85, 425378R, 425548, 425378S, 425548, 425550, 425551, B29C 4700
Patent
active
046952403
ABSTRACT:
A mini-extruder apparatus for extruding small quantities of material. The apparatus is designed to overcome the problems of excessive heat transfer from the heated portion of the barrel to the feed portion of the extruder barrel and the premature failure of the long thin extruder screws employed in extruders. The mini-extruder includes an extruder barrel having a substantially circumferential, radially extending cavity formed in an isolator portion of the extruder barrel to thermally isolate the feed portion from the heated portion. The mini-extruder also includes a drive system constructed to drive the extruder screw at both ends. The mini-extruder can also be designed as a co-rotating or counter-rotating twin screw extruder where each end of each extruder screw is driven.
REFERENCES:
patent: 696575 (1902-04-01), Lee
patent: 2574907 (1951-11-01), Bucken
patent: 2587930 (1952-03-01), Uschmann
patent: 2707306 (1955-05-01), Weber et al.
patent: 2774107 (1956-12-01), Davis
patent: 3256562 (1966-06-01), Heard et al.
patent: 3305893 (1967-02-01), Machen
patent: 3547261 (1970-12-01), Koch
patent: 3743252 (1973-07-01), Schott
patent: 3924841 (1975-12-01), Shinmoto
patent: 4058298 (1977-11-01), Duska et al.
patent: 4319871 (1982-03-01), McAlister
Leistritz Applications Bulletin, American Leistritz Extruder Corporation, 1983.
Leistritz Information-Technical Bulletin 20, Leistritz Maschinenfabrik GmbH, 1980.
Leistritz Information-Technical Bulletin 22, Leistritz Maschinenfabrik GmbH, 1980.
Leistritz Extrusilnstechnik, Leistritz Maschinenfabrik GmbH, Oct. 1979.
Egan Extruders-Bulletin No. 202, Frank E. Egan & Company, Oct. 1968.
Chris J. Rauwendaal, "Analysis and Experimental Evaluation of Twin Screw Extruders", Polymer Engineering and Science, vol. 21, No. 16, Nov. 1981, pp. 1092-1100.
William Thiele, "Expanding Uses for Counter-rotating, Intermeshing, Twin Screw Extruders".
Plastics Compounding (1981, Industry Media Inc.).
Li Hsin L.
Prevorsek Dusan C.
Allied Corporation
Fuchs Gerhard H,.
Hampilos Gus T.
Hoag Willard E.
LandOfFree
Apparatus for extruding small quantities of material does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for extruding small quantities of material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for extruding small quantities of material will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2055938