Extruders - A Special Supplement from Rubber & Tyre Machinery World
Rubber extruders have a varied field of application. So, when you come across a rubber profile, strip, hose, cable, wire, cord coating, tire tread, v-belt, tube, or blank remember that they are only a few handful of products manufactured using extrusion process. In this Knowledge On-The-Go Special Supplement, we bring to you a ‘collector’s edition’ on Extruders and Extrusion incorporating the fundamentals.
Rubber extruders have a varied field of application. So, when you come across a rubber profile, strip, hose, cable, wire, cord coating, tire tread, v-belt, tube, or blank remember that they are only a few handful of products manufactured using extrusion process. In this Knowledge On-The-Go Special Supplement, we bring to you a ‘collector’s edition’ on Extruders and Extrusion incorporating the fundamentals.
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| EXTRUDERS |<br />
The different Cold Feed <strong>Extruders</strong> (CFE)<br />
and their uses are:<br />
Plain Barrel Type Cold Feed Extruder:<br />
These CFE’s as the name suggests have a<br />
plain barrel and used in manufacturing of<br />
hoses, blanks, fluorocarbon rubber, butyl<br />
rubber, etc.<br />
Pin Barrel Type Cold Feed Extruder:<br />
These are equipped with metallic pins fixed<br />
along the circumference in full length of<br />
screw. These pins enhance the mixing and<br />
dispersion of your rubber as it is kneaded<br />
between the barrel and screw. And the<br />
The flexibility in Pin Type Cold<br />
Feed <strong>Extruders</strong> endears to all<br />
making it a ‘Universal Extruder’<br />
for many rubber formulations.<br />
result is processed rubber with outstanding<br />
homogeneity and extrudate quality. The<br />
number of pins may be optimised by<br />
process and if required pins <strong>from</strong> last zone<br />
i.e. towards head may be blocked. These<br />
pins are generally 8 to 10 in circumference.<br />
For example, in 10 rows you will have 8x10<br />
=80 pins protruding out of the barrel<br />
towards the screw center.<br />
16<br />
Image <strong>from</strong> Web: Pin Barrel Type Cold Feed Extruder<br />
<strong>Rubber</strong> & <strong>Tyre</strong> <strong>Machinery</strong> <strong>World</strong> | FEB 2016
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