PAPER TECHNOLOGY INTERNATIONAL - Paving the way towards “paperization” with CargillTM barrier coatings. Diego Fort, Senior R&D Specialist, Cargill Andreas Voigt, Senior Technical Account Manager, Cargill - Paper Technology International 2026 - Book - Page 113

PAPER TECHNOLOGY INTERNATIONAL - Paving the way towards “paperization” with CargillTM barrier coatings. Diego Fort, Senior R&D Specialist, Cargill Andreas Voigt, Senior Technical Account Manager, Cargill

PAPERTECHNOLOGYINTERNATIONAL
(A)
(B)
Image 3 : A, B, C – different coating systems applied
•
A – Metering Size Press (MSP)
•
B – Curtain Coater
•
C – Blade Coater
(C)
During pilot trials we focused on runnability of the
machine while coating different base papers using various coating
techniques. We selected two types of modi昀椀ed starches, CargillTM
Barrier Coatings OGE and OGR 11, and we tested them with
metering size press (MSP), blade coater (jet) and curtain coater
technologies as 3 different application devices (see image 3 ABC).
The results of the trials (see graph 1) showed that the
curtain coater consistently provided the best results for both
modi昀椀ed starches. This is likely due to its ability to create a uniform
and continuous coating layer. The jet also performed well but was
slightly less effective than the curtain coater. The MSP revealed
some penetration of the applied barrier 昀椀lm which caused the least
favourable results among the three techniques but might be still
suf昀椀cient for wrapping grades for medium oil and grease resistance
demands e.g. papers with a short contact to oily materials like
wrapping burgers or French fries.
As already revealed in lab trial, the pilot trials also
highlighted that the choice of base paper signi昀椀cantly in昀氀uenced the
effectiveness of the OGR barrier. Papers with smoother surfaces
and higher densities generally performed better (see image 2).
In conclusion, pilot trials demonstrated that our modi昀椀ed
starches CargillTM Barrier Coatings, when applied using a blade
or curtain coater, offers a very effective OGR barrier for paper
packaging on a relatively low coat weight. The use of MSP provided
good enough results for some OGR requirements. These 昀椀ndings
also highlight the importance of selecting appropriate coating
techniques and base papers to achieve optimal performance.
Visit our website www.cargill.com to learn more and get in
contact with our experts.
*Source: Development of Starch-Based Materials Using Current Modi昀椀cation
Techniques and Their Applications: A Review by Sumedha M. Amaraweera and Co.
113

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