Hajime Tsujihana

Title: Hajime Tsujihana: Innovator in Sliding Materials and Weatherstrips

Introduction

Hajime Tsujihana is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of materials science, particularly in the development of sliding materials and weatherstrips. With a total of 2 patents to his name, Tsujihana's work is recognized for its innovative approach to enhancing material performance.

Latest Patents

Tsujihana's latest patents include advancements in sliding materials and weatherstrips. The sliding material is produced through the extrusion of a raw material that contains an olefin-based polymer and a silicone compound as essential components. A portion of the olefin-based polymer forms a crosslinked material within the sliding material, which helps to prevent uneven distribution of the silicone compound during the extrusion process. The residual fraction of hot xylene reflux of the sliding material ranges from 33 to 75% by weight, while the silicone compound content is between 5 to 35% by weight based on the total weight of the sliding material.

The weatherstrip patent describes a composition that includes a polymer A group and a polymer B group. The polymer A group consists of a domain made up of a crosslinked product of various polymers, including ethylene polymer and ethylene/α-olefin copolymers. This innovative composition aims to improve the performance and durability of weatherstrips in various applications.

Career Highlights

Hajime Tsujihana is currently employed at Shin-Etsu Polymer Co., Ltd., where he continues to push the boundaries of material innovation. His work has not only contributed to the company's success but has also advanced the industry standards for sliding materials and weatherstrips.

Collaborations

Throughout his career, Tsujihana has collaborated with esteemed colleagues, including Masayuki Honda and Nobuyasu Noda. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of groundbreaking technologies.

Conclusion

Hajime Tsujihana's contributions to the field of materials science, particularly in sliding materials and weatherstrips, highlight his innovative spirit and dedication to advancing technology. His patents reflect a commitment to improving material performance, making him a significant figure in his industry.