KNEADERS
Follow the same guide lines inspired by the original innovators
(Moriyama of Japan) of kneading rubber and plastics inside a closed
chamber under pressure. Our mixers provide effective mixing and
dispersion for polymer compounds at an optimum horsepower input and
operating temperature. The kneading takes place between the counter
rotating rotor tips and the stationary chamber wall at right clearances
and hard- faced surfaces. The mixing movements are channelled by the
special contours of the rotor wings.
The chamber walls and the rotors are kept cooled by circulation of
water for compound temperature control. A pneumatic cylinder operated
lid provides the required pressure for intensive mixing. Low friction
mechanical type seals on either ends of the rotors and dust suction
system provide cleaner surroundings. Motorized tilting gears discharge
the content of the chamber at the end of the mixing cycle.
TWO ROLL UNI DRIVE MIXING MILLS
Are engineered to score over the conventional mills used for mixing of
polymers between 2 rotating rolls in terms of higher efficiency and
improved machine life. The transmission by 3-stage helical reduction
gear box connecting drive motor to the rear roll coupled with anti
friction roller bearings instead of bush bearings result in a
substantial reduction in power consumption. Another futuristic feature
on our mills is the optional addition of hydraulic sensing circuits
incorporated for roll loading records of different batches / compounds.
HOT FEED EXTRUDERS/STRAINERS
Hot feed extruders have proved to be the most economical forming
machines for rubber from the beginning of rubber processing. JRD
Extruders are equipped with advance features which improve the
efficiency. Helical gear box with inbuilt thrust handling bearing
assembly and power driven feed roller assembly result in steadier,
increased and uniform feeding.
A hot feed rubber extruder fitted with a strainer die is a strainer
extruder. The strainer die filters all foreign particles in the
compound. These may be some compound particles higher in size than the
least mesh size, metal or plastic. The extruder accepts warm rubber
strip from a 2- roll mill. The screw conveys the compound to the die and
force through the die under pressure. The hot feed extruders remain the
first economical choice for straining of rubber compounds and as a
feeder machine for Rubber Calenders. Strained compounds results in
better physical properties of the final product.
COLD FEED EXTRUDERS
In almost all fields of rubber extrusion, the Cold feed Extruders are
fast replacing the conventional Hot Feed Extruders. The elimination of
the warm up mill before feeding a cold feed extruder contributes to
economic sense and reduced heat cycle for the rubber compound. The Cod
Feed extruders also improve the geometric stability of the extrusion.
The final die pressure achievable is also 30 percent higher. Well
defined zone temperature controls are possible for scroll, barrel and
die head with separate circulation systems for each zone resulting in
superior quality for the product. A vertical helical reduction unit,
hinged feed roll assembly and pressure transducer in the head are all in
tune with the latest trend. Compared to Hot Feed Extruder, the output of
Cold Feed Extruder for the same size of the scroll, is much higher,
resulting in reduced effective power input.
JRD offers the below listed Turn Key Projects with complete technical
Consultancy :
Automotive Rubber & Rubber to Metal Bonded Components.
Rubber O rings and oil seals
Rubber Hoses.
Rubber Profiles/ weather Strippings for automobile &
architectural usage.
Pre cured tread rubber plant
Reclaim rubber plant
Synthetic & Natural Rubber Sheets for various applications.