Shaping Ideas with Precision

Japanese Quality, Global Trust

Taisei is a Japan-based plastic molding manufacturer
providing fully integrated solutions —
from mold design and production
to injection molding, secondary processing, and assembly.

With decades of expertise, we deliver genuine Japanese quality,
meeting the highest standards for complex shapes and materials.

Our flexible system supports both single processes and
end-to-end solutions — turning your ideas into precision-crafted reality.

1

Product Engineering

2

Mold Production

3

Injection Molding

4

Secondary Processing

Injection Molding

High-Precision, High-Quality Plastic Molding Powered by Expertise and Advanced Technology

Focused on injection molding, we also handle vacuum forming,
thermoset molding, and blow molding.
Our engineers carefully control temperature, pressure, and cooling to ensure optimal balance and consistent quality.

Taisei’s Plastic Molding

01

Complex Shapes

We achieve stable molding even under challenging conditions
and with varying wall thicknesses through precise process control.

02

Clear Molding

Beautiful finishes with minimal bubbles or whitening using high-transparency grades of PMMA and PC.

03

Precision Quality

Applying quality standards developed in aircraft interior projects to deliver consistently high dimensional accuracy.
航空機部品

04

Advanced Materials

高機能樹脂

High-Performance Resins

Stable molding of engineering plastics requiring heat resistance and strength.
強化樹脂

Reinforced Resins

Consistent quality in glass fiber–reinforced materials through proprietary expertise.
エコプラスチック

Eco Plastics

Flexible support for sustainable products using recycled and bio-based materials.

05

Other Molding Methods

In addition to injection molding, we offer vacuum, thermoset, and blow molding, selecting the best process for each material. Our technologies deliver an optimal balance of shape, performance, and cost.
プラスチック成形
プラスチック成形
プラスチック成形

Showcase

Case studies with technical details (Japanese only)
Our showcase includes product photos along with information on application fields, molding methods, material categories, and applied technologies. Even though the page is in Japanese, the technical details and images help you understand our capabilities.

商品開発サポート

Product Engineering

Comprehensive Support from Prototyping to Mass Production

From initial ideas and design concepts to pre-production planning, we provide flexible support for any stage of product development. Whether you have an idea without drawings or need only a prototype, our experienced team offers detailed, hands-on assistance to bring your vision to life.

Mold Production

The Core of Plastic Molding
— Precision Built on Quality

At Taisei, we combine mold design expertise and craftsmanship to create high-quality molds tailored to customer needs. Design is done in Japan, with fabrication overseas, and each mold is tested and adjusted domestically for smooth mass production.
金型製作
二次加工・アッセンブリー

Secondary Processing & Assembly

Comprehensive Finishing
— From Processing to Packaging

At Taisei, we handle not only molding but also secondary processes such as painting, printing, bonding, and assembly. All final stages, including inspection and packaging, are completed in-house to deliver fully finished products ready for shipment.

Toward World-Class Quality

JAPANESE QUALITY

With sincerity and a spirit of continual challenge, we carry trust and quality into the future.

At Taisei, we combine advanced plastic processing expertise, strict quality control, and attentive service to deliver uncompromising precision and reliability. With true “Japan Quality,” we pursue manufacturing excellence that stands proud on the global stage.