Toray succeeded in the development of innovative PET film with high thermal conductivity, to contribute to improvement in energy efficiency of devices in IoT society and zero-emission society.
About product development
Toray Industries, Inc. (headquarters: Chuo-ku, Tokyo; President: Akihiro Nikkaku; hereinafter referred to as “Toray”) succeeded in the development of biaxially oriented PET film with about 2.5 times higher thermal conductivity¹ of conventional products, which is the world’s highest level for PET films while retaining its original characteristics (insulation, handling ability and processability).
The use of this newly developed film in applications that require heat dissipation and thermal conduction such as insulating materials, battery materials and circuit boards is expected to improve energy use efficiency and longevity of parts.
Toray improved the interfacial adhesion between inorganic particles and PET resin using a new particle surface treatment technology. Furthermore, the company employed its proprietary polyester design technology to control the structure of PET in nanometer level and developed a technology to evenly reduce the stress of stretching during biaxial stretching.
The company announced this research achievement at nano tech 2018, hold at Tokyo Big Sight.
Under the concept of “Materials have the power to fundamentally change the world”, Toray aims to contribute to the development of society and innovation of technology by continuing to create highly functional, high performance advanced materials.
*1 thermal conductivity: physical property that shows the degree of ease of heat flow within a substance and is inherent to materials. Generally, it is expressed as amount of heat that is conveyed over one hour in a 1 meter-thick substance with an area of 1 m2 when there is 1K temperature difference between both sides. Higher the value, faster the substance passes heat.