Page 54 - Glass Machinery Plants & Accessories no. 3/2018

DEFECT DETECTION
Defect detection
cific feature is very much appre-
ciated when it comes to inspect Operating Principle
containers produced in blow and
blow process, where erratic glass
repartition and very highly pro-
nounced settle wave (the com-
pression mark) can be found. In
this case, the Mcal4 low contrast
inspection is not affected by con-
tainer wall thickness fluctuation.
The algorithm of the Mcal4
searches for details and artefacts
erasing the light transmission
level changes which are gener-
ated by the patterned light box.
The light transmission inspection
is kept for sidewall inspection
looking for thin shoulder, neck
or body.
The success of such inspection
lies in the collaboration of three
key elements. The first is a very
fast adaptive LED light box with
a specific light pattern and a spe-
cific filter assembly. The second
is the Tiama camera with its very

high resolution, a very good sig-
nal to noise ratio and capacity to
be dimmable and adaptive to any
kind of container. The third is the
software and its algorithm, ena-
bling the Mcal4 to outperform in
low contrasted defect inspection.

ZOOM IN 2017
Year 2017 was the birth of
the Tiama camera and, since
then, customer experience with
the Tiama low contrast defect
detection have shown impor-
tant success. Newly installed on
the Urshel furnace of Krasno
Echo group, Tiama low contrast
inspection has proved its effi-
ciency and accuracy, enabling
Krasno Echo to meet the new
quality requirements and reach a
new customer population. “Since
day one of this new low contrast
defect detection, we have dra-
matically improved the efficiency
of our quality sorting,” said Mr.
Klegg from Krasno Echo. “We
Fold detected by the Low Washboards detected are glad we made this choice as it
Contrast detection on a blow & by the Low Contrast detection is for us an opportunity to better
blow container on a blow & blow container

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