Paper Technology International 2024 - Journal - Page 108
PAPERTECHNOLOGYINTERNATIONAL
Grease Resitance - Cobb
The Cobb test (right) shows the barrier performance of
Cartaseal OGB F10 exposed during 30min to vegetable oil.
The Cobb test determines the amount of oil
that is taken up by a de昀椀ned area of cartonboard
through one-sided contact with oil, within a certain
amount of time (here: 1800 seconds) – the lower the
value, the better the performance. To develop new
sustainable packaging solutions that have lasting barrier
performance one important criteria that is required is
the ability for the coating to hold properties after folding
the bow board. This is a clear limitation of most coatings
available on the market and it was a criteria we wanted
to address with Cartaseal® OGB F10. This criteria is
increasingly critical as more and more brands are asking
to develop solutions for paper 昀氀exible packaging such as
pouches or wraps.
To assess the performance of Cartaseal OGB
F10 for this type of applications, we conducted similar
test as above but on folded paper:
Grease Resistance - KIT Test after folding
Oil and Grease barrier of Cartaseal® OGB F10
are not affected by folding and it is the only solution to
keep a value above 12 after folding.
The pictures below are showing the vegetable
oil test specimen coated with Cartaseal® VWF and
Cartaseal® OGB F10 before and after folding.
VEGETABLE OIL TEST SPECIMEN - BEFORE FOLDING
VEGETABLE OIL TEST SPECIMEN - AFTER
FOLDING
108
30 min. VEGETABLE OIL COBB
KIT Test - Folded
