Hiroshi Yoshimura

Title: Hiroshi Yoshimura: Innovator in Thermoplastic Resin Technology

Introduction

Hiroshi Yoshimura is a prominent inventor based in Otsu, Japan. He has made significant contributions to the field of thermoplastic resin technology, holding 2 patents that showcase his innovative approach to manufacturing processes.

Latest Patents

Yoshimura's latest patents include a method of producing thermoplastic resin films and an apparatus for producing the same. The method allows for the formation of a biaxially oriented polyester film at a high speed of 400 m/min or more. This process involves bringing a molten thermoplastic resin film into contact with a cooling medium, which cools and solidifies the film to produce a cast film. The method is characterized by maintaining the surface temperature of the cooling medium at a level that is not lower than the glass transition temperature and not higher than the melting point of the thermoplastic resin. The apparatus features a cooling medium equipped with a heater and a cooler to ensure the requisite temperature is maintained, while also keeping the surface temperature of the cooling drum lower than the glass transition temperature of the thermoplastic resin.

Another notable patent is a link device for stretching sheet material and a stretching apparatus using this device. This link device consists of pantograph-like link member units with a sub-link held at a right angle to the running direction, along with rollers fitted to the sub-link. The design reduces running resistance and stabilizes the operation of the stretching apparatus, allowing for high-speed stretching operations and easy adjustments to stretching ratios based on desired conditions.

Career Highlights

Hiroshi Yoshimura is currently employed at Toray Industries, Inc., a leading company in the field of advanced materials. His work has significantly impacted the efficiency and effectiveness of thermoplastic resin production.

Collaborations

Yoshimura has collaborated with notable coworkers, including Yuichi Tagami and Kenji Tsunashima, contributing to advancements in their shared field of expertise.

Conclusion

Hiroshi Yoshimura's innovative patents and contributions to thermoplastic resin technology highlight his role as a key figure in the industry. His work continues to influence manufacturing processes and improve production efficiency.