Stretchable UV Curing Resin"STRTECH"(Developed products)

Traditionally, because UV-curable resins are often brittle and hard, thermosetting and thermoplastic elastic materials such as silicone and urethane resins have been mainly used for such flexible wearable devices. However, it is usually difficult to achieve both elasticity and resilience (the property of returning to the original shape after deformation), and when conventional elastic materials are tried to be elastic enough to follow the movement of skin and joints, there is a delay in restoration or the material does not return to its original shape after repeated use.

“STRTECH” is a new material that is a UV curable resin, yet it is soft, flexible, and freely stretchable, and has high resilience properties that allow it to return to its original shape even after repeated expansion and contraction. Since it can follow complex movements, it is expected to be applied to flexible wearable devices that can follow the body's movements and be worn on the skin without discomfort.

“STRTECH” has excellent adhesion to metals such as copper and silver, and is expected to be used for encapsulants for circuit boards and sensors, as well as for film substrates*. 
*Flexible wearable devices use flexible  and stretchable thin film as a substrate for circuits and other devices. 

“STRTECH” can be customized in viscosity and other properties ranging from liquid to film, and is applicable to various processes such as coating and printed wiring formation.

In addition, since it is UV curable, it can be cured in a shorter time than thermosetting, and heating, drying, and other processes are not required, making it possible to shorten the production process. In addition, since no heating is required, it is useful for reducing CO2 emissions, thus contributing to carbon neutrality. In addition, the use of thermosensitive materials and heat-sensitive organic materials can be used without requiring high heat for curing, thereby expanding the range of material choices.