Plastics Engineering - May 2014 - 14
Compounding: Efficient Equipment, Lean Trends________________
KraussMaffei's ZE
BluePower twin-screw
extruder reportedly
improves output and lowers energy consumption
(photo courtesy of
KraussMaffei).
An asymmetrical splined screw shaft allows a higher free
volume with an outer/inner diameter (OD/ID) ratio of 1.66,
up from the traditional standard of 1.55 possible with a
symmetrical splined shaft (diagram courtesy of Leistritz; see
also p. 34 of the February 2014 Plastics Engineering for more
about a related topic).
14
diameters of 27 and 34 mm). coperion also redesigned
the heating system for the sK 58 and sK 70 extruder die
heads to ensure a homogenous temperature across the die
plate, even at high throughput rates.
All models of the ZsK series can be retrofitted with a
high-precision, high-resolution torque measurement unit.
conventionally, overall torque is measured indirectly through
the motor power, but the new unit directly measures the
torque on each individual shaft. This instrument enables a
more accurate calculation of specific energy input and provides valuable information on the dynamic behavior of the
two screw shafts. This information can be used as a quality-control check, because changes in torque can indicate a
potential problem. it can also be used in scale-up calculations
and in experiments to evaluate changes in parameters,
such as screw design or pellet size and shape.
Meanwhile at K 2013, KraussMaffei Berstorff launched
its ZE Blue Power TsE, with increased free volume (an OD/iD
of 1.65) and specific torque (up to 16 nm/cm3) to provide
higher output with lower energy consumption. The new
design optimizes the tooth profiles of the screw shaft and
screw elements, the screw preloading system, and the geometry of the connecting sleeves to safely exploit the high
torque, explains the company. A new base-frame concept
allows peripheral equipment and control systems to be
integrated into the base frame if desired.
| PlAsTics EnginEEring | MAY 2014 | www.4spe.org | www.plasticsengineering.org
http://www.4spe.org
http://www.plasticsengineering.org
Plastics Engineering - May 2014
Table of Contents for the Digital Edition of Plastics Engineering - May 2014
Contents
Plastics Engineering - May 2014 - Cover1
Plastics Engineering - May 2014 - Cover2
Plastics Engineering - May 2014 - Contents
Plastics Engineering - May 2014 - 2
Plastics Engineering - May 2014 - 3
Plastics Engineering - May 2014 - 4
Plastics Engineering - May 2014 - 5
Plastics Engineering - May 2014 - 6
Plastics Engineering - May 2014 - 7
Plastics Engineering - May 2014 - 8
Plastics Engineering - May 2014 - 9
Plastics Engineering - May 2014 - 10
Plastics Engineering - May 2014 - 11
Plastics Engineering - May 2014 - 12
Plastics Engineering - May 2014 - 13
Plastics Engineering - May 2014 - 14
Plastics Engineering - May 2014 - 15
Plastics Engineering - May 2014 - 16
Plastics Engineering - May 2014 - 17
Plastics Engineering - May 2014 - 18
Plastics Engineering - May 2014 - 19
Plastics Engineering - May 2014 - 20
Plastics Engineering - May 2014 - 21
Plastics Engineering - May 2014 - 22
Plastics Engineering - May 2014 - 23
Plastics Engineering - May 2014 - 24
Plastics Engineering - May 2014 - 25
Plastics Engineering - May 2014 - 26
Plastics Engineering - May 2014 - 27
Plastics Engineering - May 2014 - 28
Plastics Engineering - May 2014 - 29
Plastics Engineering - May 2014 - 30
Plastics Engineering - May 2014 - 31
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Plastics Engineering - May 2014 - 33
Plastics Engineering - May 2014 - 34
Plastics Engineering - May 2014 - 35
Plastics Engineering - May 2014 - 36
Plastics Engineering - May 2014 - 37
Plastics Engineering - May 2014 - 38
Plastics Engineering - May 2014 - 39
Plastics Engineering - May 2014 - 40
Plastics Engineering - May 2014 - 41
Plastics Engineering - May 2014 - 42
Plastics Engineering - May 2014 - 43
Plastics Engineering - May 2014 - 44
Plastics Engineering - May 2014 - 45
Plastics Engineering - May 2014 - 46
Plastics Engineering - May 2014 - 47
Plastics Engineering - May 2014 - 48
Plastics Engineering - May 2014 - 49
Plastics Engineering - May 2014 - 50
Plastics Engineering - May 2014 - 51
Plastics Engineering - May 2014 - 52
Plastics Engineering - May 2014 - 53
Plastics Engineering - May 2014 - 54
Plastics Engineering - May 2014 - 55
Plastics Engineering - May 2014 - 56
Plastics Engineering - May 2014 - 57
Plastics Engineering - May 2014 - 58
Plastics Engineering - May 2014 - 59
Plastics Engineering - May 2014 - 60
Plastics Engineering - May 2014 - 61
Plastics Engineering - May 2014 - 62
Plastics Engineering - May 2014 - 63
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Plastics Engineering - May 2014 - 65
Plastics Engineering - May 2014 - 66
Plastics Engineering - May 2014 - 67
Plastics Engineering - May 2014 - 68
Plastics Engineering - May 2014 - Cover3
Plastics Engineering - May 2014 - Cover4
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