Mitsumikoma Co., Ltd. Official Website

Corporate Philosophy Corporate Philosophy

Driven by Creativity and Reliable Service,
We Strive to Be a Leading Insert Molding Manufacturer

Company Policy Company Policy

We Are One Team!
Mitsumikoma — Continuously Evolving and Creating Value

By continuously developing our technologies and other in-house resources,
we adapt flexibly to changing market needs and strive to be a distinctive company with the pride of delivering value that only we can provide.

Our Four Strengths Four Strengths Behind Our Manufacturing

01
Technology
Technical Expertise of Certified Injection Molding Specialists, Delivering Optimal Solutions from Planning and Design
02
Equipment
Advanced Manufacturing Facilities Built Around 300-Ton-Class Vertical Injection Molding Machines
03
Creativity
Dedicated to Understanding Your Vision and Turning It into Reality
04
Sourcing
Reliable Procurement Capabilities Supported by Strong Partnerships

Environmental Policy Environmental Policy

We are committed to contributing to a sustainable society through our business activities.
As part of this commitment, we have obtained certification for both the ISO 9001 Quality Management System and the ISO 14001 Environmental Management System, internationally recognized standards established by the International Organization for Standardization (ISO). Through these certifications, we continuously work to enhance product quality and build environmentally responsible manufacturing processes.
We also promote sustainable manufacturing by continuously reducing our environmental impact through energy conservation, waste reduction, and the use of recycled materials.

CEO Message Message from the President

"Manufacturing Built on the Fusion of Textile Expertise and Molding Technology"

Thank you for your continued support and for visiting the website of Mitsumikoma Co., Ltd.
Our company specializes in the manufacturing of various insert-molded products, including air filters used in a wide range of applications such as home appliances and residential equipment.
As a member of the Tamurakoma Group, which operates across diverse fields including textiles and industrial materials, Mitsumikoma launched its filter business by combining Tamurakoma's expertise in textile development and proposal capabilities with our molding technologies. This fusion of technologies forms the foundation of our manufacturing philosophy.
Today, leveraging large-scale vertical injection molding machines with capacities of up to 300 tons and advanced injection molding technologies, we deliver high-quality large insert-molded products that are difficult for many manufacturers to produce. In addition to textile materials, we have expanded our expertise to include insert molding using a variety of materials such as glass and metal, enabling us to meet an increasingly diverse range of customer needs.
Moving forward, we will continue to enhance our technological capabilities and quality standards while striving to be recognized as a company that can provide value found nowhere else. United as one team, we remain committed to creating products that exceed our customers' expectations.
We sincerely appreciate your continued support and patronage.

President & Representative Director Masaki Kojima

Company Profile Company Profile

Company Name	Mitsumikoma Co., Ltd.
Company Address	2-21-7 Niwajihonmachi, Neyagawa City, Osaka 572-0076, Japan TEL: +81-72-827-7552 FAX: +81-72-800-6161
Establishment	2010
Paid-in capital	JPY 30 Million
Representative	President & Representative Director: Masaki Kojima
Number of employees	40 (as of 2026)
Business Activities	As a plastic molding manufacturer, we provide integrated services ranging from mold design to the manufacturing and sales of air-conditioning filters and home appliance components for major appliance manufacturers.
Board of Directors	President & Representative Director: Masaki Kojima Director & Plant Manager: Naoto Araki Director: Hideki Takahashi
Business Partners	Daikin Industries, Ltd. Panasonic Holdings Corporation Hitachi, Ltd. Mitsubishi Electric Corporation ※Company names are listed in Japanese alphabetical order.
Parent Company	Tamurakoma & Co., Ltd. https://tamurakoma.co.jp

Access Access

2-21-7 Niwajihonmachi, Neyagawa City, Osaka 572-0076, Japan
TEL: +81-72-827-7552

Access by Car: Please visit us via Prefectural Route 13 (Kyoto–Moriguchi Line) near the Niwajihonmachi area.
Visitor parking is available in front of the factory.

Access by Train

Nearest Station: Keihan Main Line “Neyagawa-shi Station” – Approximately 10 minutes by taxi from the East Exit.
Osaka Metro Tanimachi Line “Dainichi Station”: Take the Keihan Bus bound for “Niwaji Danchi,” get off at the “Niwaji” bus stop, and walk approximately 5 minutes.

History History

2010
Mitsumikoma Co., Ltd. was established as a joint venture between Tamurakoma & Co., Ltd. and Mitsumi Kasei Co., Ltd.
2010
Introduced three vertical injection molding machines, three annealing machines, and one ultrasonic processing machine.
2011
Introduced one ultrasonic processing machine and one roll material cutting machine.
2011
Introduced one vertical injection molding machine and one automated annealing machine.
2014
Introduced one automatic filter mesh processing machine.
2016
Relocated to a new factory to support business expansion (1,437.43 m², three times larger than the previous facility).
2016
Introduced one vertical injection molding machine and one stainless steel processing machine.
2021
Introduced one horizontal injection molding machine.
2023
Introduced two vertical injection molding machines.
2026
Introduced two vertical injection molding machines.

Insert Molding Technology Insert Molding Technology

Product・Equipment Products・Equipment

会社概要 Company