Eiji Kumagai

Title: Eiji Kumagai: Innovator in Oriented Syndiotactic Polystyrene-Based Film

Introduction

Eiji Kumagai is a notable inventor based in Ohtsu, Japan. He has made significant contributions to the field of materials science, particularly in the development of innovative films. His work focuses on enhancing the properties of syndiotactic polystyrene, which has applications in various industries.

Latest Patents

Kumagai holds a patent for an oriented syndiotactic polystyrene-based film. This film is composed of an oriented film made from a syndiotactic styrene polymer, featuring an adhesiveness-improving layer formed from a specific water-dispersible resin on at least one surface. The invention is designed to provide excellent adhesion between the oriented film and the adhesiveness-improving layer, as well as between the adhesiveness-improving layer and any ink or laminate layer applied. The film is noted for its economical efficiency, recyclability, and environmental compatibility in production. The preferred method of production involves applying an aqueous dispersion of the water-dispersible resin on unstretched or uniaxially stretched film, followed by stretching the laminate and heat-treating it.

Career Highlights

Eiji Kumagai is associated with Toyo Boseki Kabushiki Kaisha, where he continues to innovate and develop new materials. His work has garnered attention for its practical applications and contributions to sustainable practices in manufacturing.

Collaborations

Kumagai has collaborated with notable colleagues, including Masayuki Tsutsumi and Hisato Kobayashi. Their combined expertise has contributed to advancements in the field of polymer science and film technology.

Conclusion

Eiji Kumagai's contributions to the development of oriented syndiotactic polystyrene-based films highlight his innovative spirit and commitment to enhancing material properties. His work not only advances technology but also promotes sustainability in production processes.