Page 57 - Plastcs News August 2017

PrODuCT NEWS

Elmet introduces Drum ZAMBELLO counter-rotating

identification for IM twin-screw extruders

LMET an internationally operating system supplier for arallel type: Zambello updates it constantly both
Ethe injection molding of two-component liquid silicone Pwith new sizes of standard products and tailored
rubbers (LSR), has introduced a standardized barcode system gearboxes for the exacting needs of customers.
for drum labelling and recognition as an integral part of its NRB series - With a transmissible torque density up to
TOP 5000 P dosing systems. This new identification system, 17 Nm/cm3 per shaft The gearboxes of the NRB range
which has been have a horizontal shape (mounting position B3), which
developed jointly requires a connection to the electric motor by belts
with the WACKER and pulleys. As a matter of fact, the reduction ratios
chemical group, is available cover a ratio up to a maximum of i=25.
currently unique ZT3 series - With a transmissible torque density up to
in this industry. It 17 Nm/cm3 per shaft The gearboxes of the ZT3 series
virtually eliminates have approximately the same features as the NRB
the possibility of series, but have a vertical shape (mounting position
components A and B7). In this case the connection between gearbox and
B becoming mixed electric motor is carried out by an elastic coupling.
up when replacing Due to the possibility to mount the electric motor in
the similar-looking the U arrangement, the final result is a very compact
drums. The simple but effective solution should help extruder. Reduction ratios available go from i=14 to
the entire industry to consistently prevent any handling max. i=80.
mistakes and their serious consequences. TST range : The TST range (Twin Super Torque) is

WACKER provides its drums with banderoles, which, in available in two versions: TST-H and TST- 2H. Both
addition to the conventional A or B label, also have a series offer very high performance rates.
barcode running around them. optionally, ELMET provides TST- H series - With a transmissible torque density up
its high-performance dosing system with a reading device to 20 Nm/cm3 per shaft.The gearboxes of this series
coordinated to this barcode. The control unit of the are designed for exacting applications, where a high
ToP 5000 P only allows the pump to be immersed into torque is required, which is transmitted by means of
the new drum if it recognizes the right code. Initially a single reversing unit. The connection to the electric
still designed as a hand scanner, it will be followed by a motor is obtained by means of an elastic joint. The
height-adjustable, firmly installed reading device as soon reduction ratios available go from i=14 to max. i=80.
as this convincing safety system has become established
on a broad front. The ToP 5000 P multi-component dosing TST- 2H series - With a transmissible torque density
system from ELMET equipped with the new scanner is up to 22.5 Nm/cm3 per shaft. The gearboxes of the
designed for the large-series production of high-quality TST-2H series present the highest technical level for
parts. It is suitable for shot weights of less than 0.1 g which these are the best worldwide for heavy-duty
to several kg, for 200 l and 20 l containers and material jobs. The transmission of the torque is obtained by
viscosities of 9,000 mPas to 3,000,000 mPas, even when means of a double reversing unit. The reduction ratios
there are significant viscosity differences between the A available go from i=14 to max. i=80.
and B components. With its two separate control circuits Conical type: As a completion of the range of gearboxes
for emptying of the drums (over 99 %) and controlling the for counter rotating extruders, Zambello proposes the
volume fed into the process, this system has also proved new ZC3 gearboxes for conical twin-screw extruders.
itself with tight process windows and difficult start-up At the moment the new gearboxes are available in
conditions. The automatic drum venting device reduces three sizes, which are suitable for extruders having
the amount of manual work needed when changing drums. screw diameters of 55 mm, 65 mm and 80 mm.

57 Aug ust 2017 | Plastics News