Tsutomu Ishii

Title: **Tsutomu Ishii: Innovator in Shoe Press Technology**

Introduction

Tsutomu Ishii is a notable inventor based in Tokyo, Japan, recognized for his contributions to the field of shoe press technology. With a total of four patents to his name, Ishii has made significant advancements in improving the durability and efficiency of shoe press belts used in papermaking machines.

Latest Patents

Among his latest innovations is a shoe press belt featuring a chemically bonded inner oil layer. This invention addresses the issue of lubricating oil infiltration into high molecular weight elastic materials. The belt is designed to enhance performance by improving the durability of the friction surface and preventing issues such as flaking, cracks, and breakage. The inner portion of this endless shoe press belt is made from a high molecular weight elastic material and is coated with a protective oil that has a higher viscosity than the lubricating oil supplied to the contact area, effectively preventing any infiltration into the belt’s surface.

Another notable patent involves a shoe press belt equipped with grooves for draining water between a press roll and a shoe. The unique groove configuration defines multiple laterally spaced channels with outwardly curved side walls, allowing for effective water drainage under nip pressure while maintaining resistance to crack formation. This design not only enhances the shoe press belt's service life but also prevents the formation of groove marks on the pressed sheets, all while keeping manufacturing costs low.

Career Highlights

Throughout his career, Ishii has worked with esteemed companies such as Ichikawa Co., Ltd. and Fujitsu Corporation. His experiences at these organizations have contributed to his expertise in developing advanced materials and designs that cater to industry needs.

Collaborations

Tsutomu Ishii has collaborated with talented individuals in the field, including Hiroyuki Tanaka and Koji Demizu. These partnerships have facilitated innovative breakthroughs in shoe press technology, combining expertise and vision to drive advancements in the industry.

Conclusion

Tsutomu Ishii’s inventive spirit and dedication to improving shoe press technology have resulted in patents that enhance the performance and durability of essential industrial components. His work continues to influence the papermaking industry, showcasing the value of innovation and collaboration in driving progress.