Company ProfileAbout Us

Company profile

Company name
Polyplastics Co., Ltd.
May 4, 1964 (Founded on June 26, 1962)
Head office
JR Shinagawa East Bldg., 18-1, Konan 2-chome, Minato-ku, Tokyo 108-8280, Japan
Phone / Fax no
Phone: +81-3-6711-8600,
Fax: +81-3-6711-8606
Takashi Miayamoto, President and CEO
3 billion yen

DAICEL CORPORATION (Shareholding 100%)

Manufacturing and selling of various types of engineering plastics and polymers
  • Acetal copolymer (POM)
  • Polybutylene terephthalate (PBT)
  • Polyethylene terephthalate (PET)
  • Liquid crystal polymer (LCP)
  • Polyphenylene sulfide (PPS)
  • Cyclic olefin copolymer (COC)
Net sales (consolidated)
186,868 million yen (2023)
Number of Polyplastics
Group Employees
2,383 (March 2024)


Yoshimi Ogawa
Executive Consultant
Takashi Miyamoto
Representative Director and President
Yasuhiro Sakaki*
Akihisa Takabe*
Noriyoshi Yamamoto*
Yuki Yoneda
Corporate Auditor
Yuji Iguchi
Corporate Auditor (part-time)
Chizuko Yamamoto*
Outside Corporate Auditor

Takashi Miyamoto

Responsible for Internal Audit Dept.

Managing Executive Officer

Masaaki Nakamura

General Manager of Supply Chain Div., Responsible for ICT Management Dept.

Managing Executive Officer

Koji Oishi

General Manager of Production Div., Chief of Engineering Center, Production Div., Responsible for Manufacturing Affiliates inAsia, and Safety and Environment,Representative Director of PTM Holdings,Inc., Representative Director of P Holdings,Inc.

Managing Executive Officer

Hiroyuki Yazawa

General Manager of Marketing and SalesDiv., Chief of JAPAN Business Unit,Responsible for Selling Affiliates

Managing Executive Officer

Mitsunori Matsushima

General Manager of Research andDevelopment Div., Responsible forIntellectual Property Dept., New BusinessDevelopment Dept. and Polyplastics-EvonikCop.

Executive Officer

Keisuke Gotoh

General Manager of Corporate Strategy Div.,Responsible for Topas Advanced PolymersGmbH(TAP) and Advanced MonomersPrivate Limited (AMPL)

Executive Officer

Shoji Sanada

Chief of Production Technology Center,Production Div.、Responsible for COC Projectand LCPG

Executive Officer

Makoto Nakajima

General Manager of Corporate Support Div., Responsible for Risk Management and Corporate Compliance

Executive Officer

Hidetoshi Kozono

Chief of Production Technology Center, Production Div., Chief of Production Planning Department, Production Div.


Toru Katsumata

Responsible for Quality AssuranceDept.,Technical Advisor


Noriyuki Taki

Chief of ASEAN Business Unit, Marketing andSales Div.

Effective on April 1, 2024

*Outside Director

Note: Abbreviated names for overseas group companies

Abbreviation, Official company name Location of Head Office
PTM: PTM Engineering Plastics (Nantong) Co., Ltd. China/Nantong
PNL: Polyplastics (Nantong) Ltd. China/ Nantong
PAP: Polyplastics Asia Pacific Sdn. Bhd. Malaysia/ Kuala Lumpur
PTW: Polyplastics Taiwan Ltd. Taipei
LCPG: LCP Leuna Carboxylation Plant GmbH Germany/ Saxony-Anhalt
TAP: TOPAS Advanced Polymers GmbH Germany/ Raunheim

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