エステック

We introduce a specialized plasma surface modification technique known as “mild plasma.”
This method enhances adhesion between dissimilar materials without roughening the surface or altering its surface roughness.
It offers the potential to address various interfacial challenges, such as adhesive-free bonding, conductive ink printing, and metal deposition.
The technique is applicable to a wide range of materials, including polymeric substrates (e.g., fluoropolymers, LCP, PPS, PI), ceramics, and silicone rubber.

This is an introduction to our mild plasma irradiation equipment.
We develop various types of systems tailored to the shapes and forms of different materials.
In particular, our roll-to-roll (RtoR) processing system for film materials has already been adopted in mass production.
We have irradiation experience with a range of materials, including PI, LCP, PPS, PFA, and PTFE.
Other available systems include a laboratory-scale unit for film materials, a flat-panel type for thicker or rigid substrates, and a bottle-type system for powdered materials.
Sample processing is available for each system type.

We have developed a technique for bonding fluoropolymer (PFA) to low-roughness copper foil (Rz: 0.85) at temperatures below 200 °C by modifying the PFA surface using mild plasma treatment.
This process enables low-temperature roll lamination, contributing to energy savings and improved productivity.
Thanks to the smooth bonding interface, the method is particularly effective for high-frequency signal transmission, achieving a transmission loss of −2.89 dB/100 mm at 80 GHz.
The technique is also applicable to other materials such as PI, LCP, PTFE, and PPS.

We offer contract-based development, evaluation, and prototyping services tailored to customer requirements—for example, bonding resin A to resin B.
On-site observation and joint testing are also available.
In addition to mild plasma irradiation equipment, we maintain a full range of evaluation tools, including a contact angle meter, hot press, roll laminator, and peel tester.