EXTRUDER SCREW, EXTRUDER, AND EXTRUSION METHOD

WIPO Patent Application WO/2016/175081

A1

Provided is an extrusion technology in which, as a result of providing a screw with a function for imparting stretching action to a starting material, stretching action is imparted to the whole of the starting material conveyed by the screw, without any leakage, and without lengthening an extruder (the screw), and the degree of kneading of the starting material is improved. Conveyance parts 22, barrier wall parts 23, and passages 37 are provided in a plurality of places in a section of a screw main body 11 where a kneading portion 11c is provided. The passage in at least one of these places is provided inside the screw main body, and is provided with an inlet 38 and an outlet 40. The inlet is open such that a starting material under increased pressure as a result of the conveyance thereof being restricted by the barrier wall part flows therein. The passage is formed such that the starting material flowing in from the inlet flows therethrough in the same direction as the direction of conveyance by the conveyance part. The outlet is open at the outer circumferential surface of the screw main body, in a position away from the conveyance part in which the inlet is open.

KOBAYASHI AKIYOSHI (JP)
FUJII SHIGEYUKI (JP)
SAMESHIMA TAKAFUMI (JP)

PCT/JP2016/062278

November 03, 2016

April 18, 2016

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TOSHIBA MACHINE CO LTD (JP)

B29B7/42; B29C48/395; B29C48/51; B29C48/53; B29C48/57; B29C48/575; B29C48/67

WO2015163197A1

2015-10-29

JPS59184635A	1984-10-20
JPS5272573U	1977-05-31
JPS57107826A	1982-07-05
JP2005169764A	2005-06-30
JPH05220818A	1993-08-31
JP2009045804A	2009-03-05

S & S International PPC (JP)
Patent business corporation スズエ international patent firm (JP)

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