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Uniblend continuous kneader is a high performance , broad spectrum Compounding
Machine which operates on a unique Synchronous Reciprocating Screw principle,
which sets it apart from all other screw type compounders, either twin
screw or single screw.. As in all contemporary high technology compounding
systems, The polymer is charged in the machine from the first inlet
and filters and /or fibres are inducted through subsequent ports in
the barrel into the already molten polymer stream .
What differentiates UNIBLEND from other machines
is its screw, which is recessed at 120° interval all along the periphery,
and performs an axial stroking movement simultaneous with the
rotation, completing one stroke with every revolution. Correspondingly,
the barrel is fitted with three rows of kneading pins, which are also
spaced at 120° inside the barrel, The excellent dispersion of unmeltable
compounds into the molten polymer matrix is achieved due to shear generated
between the flanks of the screw flights and the stationery kneading
pins. The synchronous back and forth movement of the screw also provides
a high degree of product exchange in the axial direction. thus producing
an outstandingly 'Uniform Blendering'
over a remarkably short process length.
A significant advantage of this kneading system over twin screw is that
no pressure peak or high radial pressure is generated during the kneading
process. The matrix is sheared, dispersed and simply reoriented or refolded
several times. This makes the Uniblend Kneader
especially suitable for compounding of heat and pressure sensitive polymers
as well as formulations containing high filter proportions or reinforcing
materials like glass fibre.
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