Silicone Transfer in Paper Liner
Kanter, Raul (2016)
Kanter, Raul
2016
Materiaalitekniikan koulutusohjelma
Teknisten tieteiden tiedekunta - Faculty of Engineering Sciences
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Hyväksymispäivämäärä
2016-12-07
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201611224741
https://urn.fi/URN:NBN:fi:tty-201611224741
Tiivistelmä
The silicone transfer has been an ever-present phenomenon in the pressure sensitive adhesive (PSA) field. Understanding and reducing the silicone transfer would improve label quality in multiple ways. Foremost, label’s adhesion and printing finish would improve and become even more predictable. Furthermore, as the printing process is very delicate in its nature, removing or at least reducing the silicone transfer would reduce issues encountered in printing.
The original goal of this thesis was to evaluate and compare the silicone suitability, before their use in production, by assessing silicones in laboratory for their extractable-content. Namely, the extractable-content is one indicator for silicone transfer and its severity. The idea was, to eventually, find out the best silicones to be used with specific release liners. Also, there were interest in determining, whether there were batch to batch differences in the received silicones.
However, it was quickly learned that the original goal was unrealistic within the given framework. Therefore, the new goal of the thesis, was to concentrate on finding a correlation between coat weight and extractable-%, but even this goal proved to be challenging. In the end, the goals truncated into method development as no correlation was found. Nonetheless, an insight was gained into quality control methods, where basic yet fundamental issues were uncovered, and corrected for more accurate quality control. With the gained insight, further suggestions for improving the quality control methods will be presented.
In the future, if there is a desire to accomplish the original goals, it is advised to co-operate with an independent laboratory possessing the suitable equipment and seasoned laboratory technicians. Additionally, it would be reasonable to replicate the current experiment
The original goal of this thesis was to evaluate and compare the silicone suitability, before their use in production, by assessing silicones in laboratory for their extractable-content. Namely, the extractable-content is one indicator for silicone transfer and its severity. The idea was, to eventually, find out the best silicones to be used with specific release liners. Also, there were interest in determining, whether there were batch to batch differences in the received silicones.
However, it was quickly learned that the original goal was unrealistic within the given framework. Therefore, the new goal of the thesis, was to concentrate on finding a correlation between coat weight and extractable-%, but even this goal proved to be challenging. In the end, the goals truncated into method development as no correlation was found. Nonetheless, an insight was gained into quality control methods, where basic yet fundamental issues were uncovered, and corrected for more accurate quality control. With the gained insight, further suggestions for improving the quality control methods will be presented.
In the future, if there is a desire to accomplish the original goals, it is advised to co-operate with an independent laboratory possessing the suitable equipment and seasoned laboratory technicians. Additionally, it would be reasonable to replicate the current experiment