Solid material comminution or disintegration – Apparatus – With temperature modification of material
Reexamination Certificate
2003-05-17
2008-03-18
Francis, Faye (Department: 3725)
Solid material comminution or disintegration
Apparatus
With temperature modification of material
C241SDIG031
Reexamination Certificate
active
07344098
ABSTRACT:
A method for the production of highly-active rubber powder from old tires and scrap vulcanised rubber articles based on various rubbers by 2-stage thermo-mechanical treatment in an extruder. This involves (a) fine pulverisation and (b) sharp reduction of the volume stress. An apparatus for the production of highly-active rubber powder includes a cylindrical housing with feed and discharge connections, a compression zone and pulverisation zone(s), each with a compression screw with grooves decreasing in depth in the machine direction and a rotating coaxial activator with grooves on its outer working surface, the housing, screw and activator being provided with cooling elements.
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Balyberdin Vladimir
Gorelik Roudolf
Drutsche Gumtec AG
Francis Faye
Roberts & Roberts, LLP
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