Kazuyoshi Ota

Title: Kazuyoshi Ota: Innovator in Laminated and Multilayer Films

Introduction

Kazuyoshi Ota is a prominent inventor based in Otsu, Japan. He has made significant contributions to the field of materials science, particularly in the development of laminated and multilayer films. With a total of 6 patents to his name, Ota's work has had a substantial impact on various applications in the industry.

Latest Patents

One of Ota's latest patents is for a laminated film that exhibits excellent general adhesiveness to polyvinyl alcohols (PVAs), ethylene-vinyl acetates (EVAs), and polyvinyl butyrals (PVBs) across a wide range of saponification degrees. This innovation addresses the problem of achieving good moist heat-resistant adhesiveness. The laminated film comprises a resin layer composed of an aliphatic urethane structure-containing resin composition on at least one side of a thermoplastic resin film. The resin layer meets specific properties, including a surface free energy of not less than 30 mN/m and not greater than 45 mN/m, and a polar force of not less than 5.0 mN/m and not greater than 15.0 mN/m.

Another notable patent is for a multilayer film and the method for producing it. This multilayer film features a resin layer on at least one surface of a polyester film, satisfying several conditions such as a thickness of 80-500 nm, a pencil hardness of F or higher, and a haze of 3.0% or less. The resin used is obtained by heating a resin composition containing a hydroxyl group and an acryloyl group along with a melamine compound at high temperatures. This multilayer film is characterized by its transparent resin layer, which is thin yet possesses high hardness and excellent oligomer precipitation inhibiting properties.

Career Highlights

Kazuyoshi Ota is currently employed at Toray Industries, Inc., a leading company in the field of advanced materials. His work at Toray has allowed him to focus on innovative solutions that enhance the performance of films used in various applications.

Collaborations

Ota has collaborated with notable coworkers, including Yasushi Takada and Shotaro Tanaka. Their combined expertise has contributed to the successful development of advanced materials and technologies.