PIN TYPE COLD FEED RUBBER EXTRUDERS

PLAIN / PIN BARREL TYPE EXTRUDERS VENT / VACUUM TYPE EXTRUDERS, DUAL EXTRUDERS FOR CO-EXTRUSION


PRODUCT INTRODUCTION

The pins, made from special steel, eliminate a problem which leads to a noticeable drop in throughput and extruder quality in the operation of large, conventional cold-feed extruder. Due to temperature and viscosity differences, where no material exchange occurs between neighbouring compound layers, »islands« form in the rotating flow between the screw flights. These layers insulate themselves from one another, thus preventing proper mixing of the extruder.

The pins (see diagram) which are inserted through the barrel from the outside, divide the flow of rubber, invert it and mix the layers with one another. This results in the formation of permanent new surfaces and leads to an intensive exchange of materials and heat. In order to ensure optimal mixing throughout, the first pin row is situated at a point where the filling process has definitely been completed. As the pins nearly extend to the screw core, gaps have been cut in the screw flights at the corresponding positions.

In most cases the screw of Extruder is made of nitrided steel although for some applications other special steels may also be used. In order to better protect the highly stressed external surfaces of the screw flights from wear, for example when abrasive compounds are processed, these may be coated with extremely hard armour plating. The barrels are equipped with replaceable liners which can be treated with an abrasion-resistant coating if required.

BCF-PB-200 For Tyre Tread Extrusion

EQUIPPED WITH A TREAD DIE HEAD FOR TREAD EXTRUSION
L/D RATIO - 16:1 SIX ZONE TEMPERATURE CONTROLLING
RANGE: 25 MM - 250 MM

PLC Controlled, Operational through Touch Screen Display. (HMI)



MODEL: BCF-PB-90

EQUIPPED WITH A TREAD DIE HEAD FOR TREAD EXTRUSION
L/D RATIO - 16:1 FOUR ZONE TEMPERATURE CONTROLLING
RANGE: 25 MM - 250 MM


MODEL: BCF-PB-150

150 MM PIN BARREL COLD FEED EXTRUDER
EQUIPPED WITH TWIN HEAD
  • Better dispersion material quality.
  • No warming mill required.
  • No Extra Conveyor Required.
  • No labor Required.
  • Effect polymer temperature control due to various temperature controlling units for different zones.
  • Higher output & less energy consumption due to variable speed Mechanism.

Still using Hot Feed Extruders?

Still wasting energy & labour by having warming mills, conveyor etc.?

Still facing quality issues with rubber dimensions, Temperature?

Still facing quality issues with Scorching & Improper feeding?

Switch to Bharaj Machineries




RADIAL PINS PROVIDED FOR HIGH SHEARING EFFECT CAUSING BETTER EXTRUSION OF THE PRODUCT
 




Technical Specification of Standard Range of Machineries

MODEL BCF-PB 60 BCF-PB 90 BCF-PB 120 BCF-PB 150 BCF-PB 200 BCF-PB 250
SCREW DMM 60 MM 90 MM 120 MM 150 MM 200 MM 250 MM
OUTPUT MAX KG/H 130-200 130-200 130-200 130-200 130-200 130-200
SCREW SPEED MAX/MIN 60-80 55-65 40-50 37.5-45 30-35 24-27
MOTOR POWER / HP 30-40 H.P 75-100 H.P. 120-150 H.P. 200-250 H.P. 350-400 H.P. 550-700 H.P.