11-08-17 4seiter Solarschablone Eng

New M-TeCK products
M-TeCK: NEW WAYS OF METALLISATION
M-TeCK: NEW WAYS IN METALLISATION
High positioning accuracy and minimal distortion
Thanks to the design of the M-TeCK
stencil, a very high strength in the printing
area can be achieved. The forces produced
during printing are elastically absorbed by
the fabric surrounding the stencil. Positions
specified in the layout are reproduced with
maximum accuracy for minimum distortion.
Viewed over the entire service life, there is
only little margin for variances during the
process.
Thomas Lucuta is the responsible
product manager for the M-TeCK
series of Christian Koenen GmbH.
The M-TeCK product series –
comprising the stencil, the squeegees that have been specially
adapted to the requirements of the
printing process, and the cleaning
products – has been optimised
to meet the current and future
challenges in the solar cell metallisation process.
The special design of the MTeCK stencil (patent pending) produces a nearly trapezoidal cross
section of the printed structures.
Thanks to the consistency of the
open surface, irrespective of the
orientation of the structures, a
consistent printing result with minimum height variations can be
obtained. Compared to screen
printing, the conductance achieved is thus significantly higher.
As the various stencil parameters can be adapted, it is possible
to produce surfaces with enormous layer thicknesses even in the
millimetre range.
And as an additional advantage, the lines can be implemented
with an optimum height-to-width
ratio.
Long service lives
M-TeCK stencils have a long service life
while delivering a constantly high printing
quality. The basic material of the stencil provides a main characteristic for this: A stainless
steel layer of a very high quality is used,
which, thanks to its extreme hardness and
durability, withstands the stresses produced
in the printing process. In addition, the stainless steel layer ensures even transmission of
the printing forces onto the print shoulder.
Edges of openings thus stay sharp for longer.
All in all, these characteristics provide the
M-TeCK stencil with a service life that is significantly longer compared to the printing
screen. The need for intervention by the operator is reduced ensuring an increased line
output in production.
Thanks to its design, the M-TeCK stencil
makes printing of fine lines, closed frames
and surfaces possible.
3D REPRESENTATION OF A 70µm WIDE FINGER
with a minimum height of 40µm and an average height of 43µm
(height axis not to scale)
300 µm
300 µm
High efficiency and no Moiré effect
The special manufacturing technology of
the M-TeCK stencil ensures maximum control
of the open surface of a structure. Irrespective
of the orientation (angle position) in the
layout, a consistent open surface is produced. The Moiré effect, which always poses a
problem when screens are used, cannot
occur with M-TeCK stencils.
In order to achieve a high conductance
of the printed lines, it is important to avoid
Thomas Lucuta
Product Manager M-TeCK
You can reach Mr Lucuta at
Phone: +49(0)89 66 56 18 -35
E-Mail: tlu@ck.de
narrowing of the cross section. In screen printing, the position of mesh intersections close
to the line edge results in lower paste application.
With the M-TeCK stencil, there are no
intersection points. Volume variations are
thus avoided and consistent printing results
with minimum variations in height and cross
section are achieved.
300 µm
70µm WIDE FINGER: PRINTED WITH
THE M-TeCK STENCIL
Due to the optimal cross section shape
of the printed structures, the efficiency
of the end products is increased.
DIRECT COMPARISON OF STENCIL AND SCREEN
Longitudinal profile of a printed 70µm wide finger
(left: conventional screen printing; right: printed with the M-TeCK stencil)
High reproducibility
A special printing process requires optimal basic conditions. The M-TeCK squeegee
offers maximum process control and minimum variance when used with M-TeCK
stencils.
The various stiffnesses of the squeegee
and the degrees of hardness of the printing
edge are adapted individually depending on
the process requirements. Especially the fine
structures of the M-TeCK stencil for printing
fine lines require optimal care. The M-TeCK
cleaning products and processes fulfil the
requirements of high-quality materials and
ensure a maximum service life for highest
efficiency and availability.
CHARACTERISTICS:
M-TeCK stencil
In conjunction with
the M-TeCK accessories, new standards have been
set in metallisation
for the use of the
new M-TeCK products:
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Maximum
Maximum
Maximum
Maximum
Maximum
Maximum
conductance
service life
availability
efficiency
positioning accuracy
freedom of distortion
For more information
visit us on the Internet at:
www.ck-solar.de
or contact
Christian Koenen GmbH directly at
Phone: +49 (0) 89 66 56 18-0