Polyurethane Adhesive
Introduction
Our polyurethane adhesive, which excels in such areas as wettability and repeelability, is primarily used as an adhesive for protective film in the electronics field.
Presumed Mechanism behind the Development of White Spots
Clusters of white spots can develop when protective film with polyurethane adhesive is applied to such glass items as touch panels and then left for long periods of time under such conditions as high temperature and high humidity. Such phenomena are presumed to be caused mainly by the staining or tarnishing of glass over time.
Stain-resistant Polyurethane adhesive
We have added the polyurethane adhesive “US-1401A,” which excels in pollution resistance, to our lineup.
| US-1401A | Our existing products | ||
|---|---|---|---|
| Peel adhesion | N/25mm,SUS-BA | 0.01 | 0.01 |
| N/25mm, Glass | 0.01 | 0.01 | |
| Wettability | Sec./10cm | 3 | 3 |
| Heat resistance | N/25mm,Glass, 150℃・1hr |
0.09 | 0.08 |
| Stain resistance* | 60℃・90%RH・3days, Glass | Excellent | Good |
＊Refers to the development of white spots on glass
References
1) 2019年6月19～20日
（一社）日本接着学会 第57回日本接着学会年次大会 発表者（ポスター発表）：小野研究所 藤本竜治
2) 2023年10月4日～6日
RX Japan株式会社主催 第14回フィルムテックジャパン 展示パネル