DONG-A ENG CO., LTD

Researching Innovation Through
Core Composite Mold Technologies

Mold Manufacturing Technology

We possess advanced mold manufacturing technology that combines 3D design expertise with lightweight composite
material forming know-how, enabling the production of precise and high-quality molds.

3D Design Technology

CATIA-Based 3D Design & Analysis

All mold designs at our R&D center are developed using a CATIA-based 3D design system.
This allows early-stage analysis of geometric interference and structural rigidity, minimizing defects and maximizing product completeness.

Through 3D-based design, potential issues are identified and resolved before mold fabrication, ensuring optimized mold structures and process conditions.

Ultra-Lightweight Mold Manufacturing
Technology Using Advanced Composite Materials

We specialize in mold design and manufacturing for next-generation lightweight
components by applying advanced composite materials such as carbon fiber, long-fiber
reinforced plastics, and polyurethane foams as alternatives to conventional steel.

Key Materials

PCM (Prepreg Compression Molding) Fiber-Reinforced Composites

30–50% weight reduction compared to steel

GMT (Glass Mat Thermoplastic) & SMC (Sheet Molding Compound)

Glass fiber–reinforced composite materials

CFRP (Carbon Fiber Reinforced Plastic)

Ultra-high-strength carbon fiber composites with excellent strength-to-weight ratio

Automotive Interior Lightweighting Know-How
Expanded to Next-Generation Mobility

Building on design and manufacturing know-how accumulated through automotive interior lightweighting,
we enhance NVH performance (noise reduction, vibration control, and impact absorption)
and expand applications to advanced mobility fields such as UAM, drones, and defense.

Simultaneous improvement of lightweight performance, sound absorption,
and thermal insulation Weight reduction of several tens of kilograms per vehicle

Key Applications

Automotive: carpets, headliners, package trays, trunk trims, door trims, and related components

UAM/Drone/Defense: lightweight structural panels, interior/exterior covers, housings, and other lightweight components for advanced mobility

Eco-Friendly & High-Strength
Composite Mold Design Technology

We offer mold design and manufacturing technologies utilizing eco-friendly
and recyclable composite materials.

Compensating for the low strength typically associated with ultra-lightweight
materials, it achieves both weight reduction and high structural strength through
optimized design.

Core Technologies

Researching Innovation Through Core Composite Mold Technologies