Makoto Ishihara

Title: Makoto Ishihara and Thermoplastic Resin Sheet Manufacturing

Introduction

Makoto Ishihara is an inventor associated with Otsu, Japan, and Sekisui Chemical Co., Ltd. His recorded patent concerns a manufacturing method for thermoplastic resin sheets with embossed surfaces. The available information identifies 1 patent associated with him.

Latest Patents

Ishihara’s patent, “Method for the Manufacture of Thermoplastic Resin Sheets,” describes extruding molten thermoplastic resin through a slit in an extrusion mold to produce sheets with embossed surfaces. The method sets the ratio of extrusion velocity to slit width above a critical value, defined by the conditions that produce the minimum roughness of the embossment.

The patent presents this approach as a way to reduce manufacturing defects associated with embossing rollers, including sheets sticking to or winding around rollers, poor appearance, and sizing marks.

Career Highlights

The patent reflects Ishihara’s work on improving the production of embossed thermoplastic resin sheets. Its focus is on controlling extrusion conditions to achieve more consistent surface quality and avoid common processing problems.

Collaborations

Ishihara’s listed coworkers include Hirokazu Hori and Kazuhiro Kiminami. The available information does not specify their roles in the patent or their particular contributions.

Conclusion

Makoto Ishihara’s recorded invention addresses practical challenges in thermoplastic sheet production by using extrusion conditions designed to improve embossed surfaces and reduce defects.