COMPANY

About Nexresin

Nexresin is a materials technology company. We put the functions that nature already has into next-generation materials, and build the base — and the standard — for a sustainable materials industry.

Mission & Vision

What we aim for

MISSION

Create a society that is comfortable for people and the planet, through new material technology.

VISION

Build a sustainable materials industry where the power of nature is the normal choice.

Message

Making nature the new standard of materials.

We are not simply a company that makes materials from eggshells. Our goal is to replace functions that have been delivered by synthetic chemicals with natural materials, and to build the base for a materials industry that is sustainable for both people and the planet.

Around the world, chemical rules are getting stricter, and the shift to a circular economy and sustainable materials is speeding up. SHELLIE is one material for this change — and a new platform for natural functional materials.

By giving new value to natural resources that were thrown away, and by creating both environmental and economic value, we will help build a future where the power of nature is the normal choice.

Mie Ishibashi, CEO

Team

Our team

CEO / Co-Founder

Mie Ishibashi

石橋三枝

After graduating from the Faculty of Law at Kobe University, Mie built a track record as a sales and marketing consultant at several companies. Seeing the global shift toward solving environmental issues, she became interested around 2018 in new biomass-based material development, especially overseas. As a co-founder of Nexresin, she led the development of SHELLIE and filed patent applications. She now leads joint development projects with various manufacturers.

Chairman / Founder

Nao Ishibashi

石橋直

Nao has a broad network among government officials and business leaders in Japan, East Asia and Southeast Asia, with a strong track record in international trade. Seeing rising demand for sustainable materials in Asia, he noticed that in 2018 Japan lacked high-quality, versatile sustainable materials — which led to the start of SHELLIE. He is now working to set up production bases overseas.

Adviser

Koji Eguchi

江口幸治

Former Senior Vice President and Chief Supply Chain Officer of Mitsubishi Chemical Group. After overseas assignments and leadership roles across group companies, he held this position from April 2023 until March 2024. He became Adviser to Nexresin Inc. in January 2025.

Technical Adviser

Akira Isogai

磯貝明

Specially Appointed Professor, Department of Biomaterial Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo. A leading expert in cellulose chemistry. He earned his Ph.D. in Agriculture from The University of Tokyo, worked at research institutions in the United States, and has long led research on the structure and function of polysaccharides and cellulose. At Nexresin, he advises on improving the quality of SHELLIE and using it in many kinds of products.

Profile

Company profile

Company name	Nexresin Inc. (ネクスレジン株式会社)
Founded	July 2022
CEO	Mie Ishibashi
Address	Yaesu Chuo Bldg. 4F, 2-8-1 Kyobashi, Chuo-ku, Tokyo 104-0031, Japan
Business	Development and manufacturing of SHELLIE, an eggshell-based material series (resin masterbatch, coatings, textiles) Joint development of sustainable branded products for businesses
Contact	Contact form