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INDUSTRY SOLUTION
system provides the key technical solutions to the adapted inline transport tracks for cleaning. Five to
industry need of increasing throughput while eight of these tracks can be taken advantage of,
improving yield. To be able to achieve this whilst depending upon the type of utilised cleaning
providing a non invasive wafer handling method system. This type of output flexibility makes it
allows manufacturers to revise their monthly goals. possible to combine the ecoSplit with any common
These new developments and manufacturing cleaning system around the world. The wafers are
improvements are based on the company’s, prevented from drying out during the separation
industry first, automated wafer separator, the process by means of continuous wetting.
ecoSplit C carrier-splitter. This tool is already in
operation around the world and the information The entire separation process, from insertion of the
Issue III 2009
gleaned from its output has provided key wafers right on up to transfer to the cleaning
information in developing the new tool. process, is monitored and controlled by in-line
sensors, and visualised on a control monitor
At Least 3000 Wafers per Hour screen. A major reason that this type of continuous
The ecoSplit IXL is equipped with two loading control is used is because it ensures that there are
stations which the sawn wafers are placed upon in no breakages occuring from an incorrectly
stacks of up to 250 pieces after pre-cleaning and transported wafer. Another more obvious one is the
-pv-management.com manual inspection. Thanks to this feeding solution, assurance provided by the traceability of each
the ecoSplit IXL is the world’s only separating individual wafer during processing. Connection to
.solar
system which can be loaded whilst running, and a master MES can also be implemented for greater
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thus assures continuous operation without any control over specific manufacturing needs.
interruptions at all. Coding can be entered for each
16
stack of wafers by means of a scanning system, or Breakage rate to 0.1%
with the help of a master MES (manufacturing A further advantage of the separation technology is
executive system). Two-lane belt conveyors are the fact that, as opposed to conventional
used to transport the solar wafers. separating solutions, no elaborate gripping or
handling systems are required which often result in
Separation is accomplished through the use of increased breakage rates. Thanks to very gentle
patented technology developed by ACI-ecotec. handling of the wafers throughout the entire
The bottom most wafer is removed from the stack process, breakage rates can be reduced to as low
by a special roller system. This is done gently as 0.1% depending on saw quality. In combination
enough that it has been possible to verify the lack with high output capacity, the minimised breakage
of any traces left on the sensitive solar wafers. In rate results in return on investment within two to six
addition to this, the technology ensures that only months.
one wafer is removed from the stack at a time, and
that separation is absolutely reliable. Thanks to its Despite its tremendous and robust performance,
separation technology, which is just as unique as it the stainless steel ecoSplit occupies very little
is “simple”, the ecoSplit is capable of processing production floor space with a footprint of only 350
at least 3000 wafers per hour. x 130 cm (L x W without outlet belt). All of the
After separation, the wafers are fed to individually moisture sensitive units are enclosed in reliable
sealed housings, including the control which is
fully integrated into the robust design. The layout
allows for a quick connection to the cleaning
system, as well as a very fast commissioning time
from delivery.
Customer defined
ACI-ecotec firmly believes that after listening to
The wafers are their customers and incorporating lessons learnt
continuously from existing tools, the company has developed an
moistened in order to automated wafer separator that dramatically
prevent them from improves throughput and yield to enable
drying out during the manufacture’s of solar devices to improve their
separation process own processes and move ever closer to grid parity
(setup gauge also and the possible positive explosion of growth that
shown) can ensue.
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