Internal mixer for kneading plastic materials
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United States of America Patent
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Jul 7, 2009
Grant Date -
May 11, 2006
app pub date -
Oct 19, 2005
filing date -
Oct 19, 2004
priority date (Note) -
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Abstract
An internal mixer for kneading plastic materials, particularly synthetic materials, caoutchouc or rubber mixtures includes a housing with a mixing chamber, two rotors which are driveable in opposite directions and are arranged in the mixing chamber with parallel axes. The rotors have non-meshing rotor bodies, wherein each rotor body has four helically mixing wings which at one end thereof define a front passage to the corresponding front wall of the housing. Each rotor body has for helically extending mixing wings which are successively oppositely arranged on the circumference, wherein the mixing wings extend at least over half the axial length of the mixing chamber, and wherein the mixing wings define at one end thereof a front passage to the corresponding front wall of the housing.
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