Atsushi Yamamoto

Title: Innovations of Atsushi Yamamoto

Introduction

Atsushi Yamamoto is a notable inventor based in Takasago, Japan. He has made significant contributions to the field of thermoplastic resin technology, holding a total of four patents. His work focuses on enhancing the properties and manufacturing processes of fiber-reinforced materials.

Latest Patents

One of his latest patents is for continuous fiber-reinforced thermoplastic resin pellets and the manufacturing method associated with them. This innovation aims to provide pellets that exhibit excellent dispersion properties of reinforcing fiber bundles in injection molded articles. The goal is to achieve a satisfactory outward appearance and mechanical strength in these articles by fully utilizing the reinforcing effect. The manufacturing method involves impregnating a long reinforcing fiber bundle with molten thermoplastic resin, twisting it, and then cutting the resulting rod-shaped composition into pellets. The volume filling ratio of the reinforcing fiber bundle in the pellets is maintained between 20% and 70%, while the twisting pitch is controlled within a range of 2.5 to 36 (m/rev·m).

Another significant patent is for a manufacturing apparatus designed for producing fiber-reinforced resin strands. This apparatus includes spreaders that help to spread the reinforcing fiber bundle and are integrated within a crosshead that continuously receives molten resin from an extruding machine. The apparatus also features twisting rollers that pultrude the resin-impregnated fiber bundle while imparting twists, along with twist retaining rollers that maintain these twists. The design of the rollers, made of metal with surface asperities, ensures high durability and production rates without slippage.

Career Highlights

Atsushi Yamamoto has worked with prominent companies such as Kobe Steel, Ltd. and Kabushiki Kaisha Kobe Seiko Sho. His experience in these organizations has contributed to his expertise in the field of materials science and engineering.

Collaborations

He has collaborated with notable coworkers, including Naoyuki Tashiro and Takayasu Fujiura, who have also contributed to advancements in similar technological areas.

Conclusion

Atsushi Yamamoto's innovative work in thermoplastic resin technology and his patents reflect his commitment to enhancing material properties and manufacturing processes. His contributions continue to influence the field and pave the way for future advancements.