Page 30 - Glass-Technology International no. 4/2018

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LISEC
REDUCTION OF REMNANT GLASS PLATES

AND BROKEN SHEETS AT GETHKE GLAS

With more than 180 employees, the they disassembled remnant plates and
Gethke Glas Group generates sales assigned them to manual cutting.
of more than EUR 30 million at three Since the implementation of Dynopt,
locations in Germany. The product the LiSEC optimization tool for
range includes insulating glass, float cutting, employees in Planning and
glass, cast glass, safety glass, all-glass Scheduling no longer pay attention
doors and fittings, sliding glass door to remnants or disassemble them, but
systems and glass canopy systems. The pass on everything 1:1 to dynamic Remake Pool, where all remakes are
company, which is still family-owned, optimization: the optimization task is collected and processed) combined
was founded in 1959 by Richard entirely taken over by LiSEC Dynopt. with Dynopt, the process described
Gethke. In 1971, the flat glass han- Gethke Glas optimizes up to three above has become completely
dling plant in Gronau was expanded days of delivery in advance - which redundant.
to include an insulating glass produc- means that there are always enough Now defective sheets are scanned,
tion with an insulating glass system glass sheets to join them together. The immediately sent to the Remake Pool
from LiSEC – this was the start of the employees keep track of glass sheets and then processed as fast as possible
cooperation between Gethke Glas and by means of labels which are printed in Dynopt. With the Re-Opt extension
LiSEC. In 2017, the Gronau-based for each dynamically optimized sheet. on the cutting table, Dynopt optimizes
company produced 438,000 m² of The label shows the corresponding a glass sheet once the cutting process
insulating glass, of which one third production run number, the position, has already been started or remakes
was triple insulating glass. the dimension and the storage space. are inserted. Thus a sheet subject to a
Before using LiSEC Dynopt, glass So the sheets can be easily assigned to complaint can be returned to produc-
processors at Gethke Glas made about the (actual) production run, even on tion in no time.
ten optimizations per day with an the next day. Here too, the employees keep track
average of six types of glass per opti- When Gethke Glas had broken sheets of sheets via labels that are printed for
mization. Two to three sheets of them or heavily soiled or scratched glass each remake sheet. The associated run
contained a remnant plate, resulting in sheets in the past, the staff wrote a number, the position, the dimensions
between 20 and 30 residues per day. remake note with detailed information and the storage space as well as the
When optimizing orders in Planning on the respective glass sheet (dimen- line on which the remake order was
and Scheduling, employees tried to sion, type of glass, production line generated, are printed on the label.
avoid remnant plates as far as possible. etc.) and sent these glass sheets to With Dynopt, the company saves
For example, they looked for suitable manual glass cutting. about 1.5 employees in manual cut-
orders to improve the glass yield or Thanks to GPS-Ident (the so-called ting. In fact, thanks to the fact that
remakes as well as disassembled rem-
nant plates are processed via Dynopt,
this manual cutting system is now only
used for cutting work for the grind-
ing department. This cutting system is
now used only half a shift a day (previ-
ously two full shifts).
There is also an improved overview of
daily production in the cutting depart-
ment, thus easier planning of over-
time, reinforcement of staff, etc.
Moreover, employees in glass purchas-
ing at Gethke Glas also use
Dynopt as a support for order plan-
ning for basic glass.

28 Glass-Technology International 4/2018