OEM Prototype Overmolding Injection Mould Polypropylene Plastic Parts

ALLWIN MOULD is a leading manufacturer of custom plastic injection moulds, specializing in high-performance overmolding (two-shot injection moulding) solutions for power tool components. Our overmolded handle moulds deliver exceptional ergonomics, durability, and production efficiency for global power tool OEMs.

This is a high-precision two-shot overmolded power tool handle, engineered for ergonomic, shock-absorbent grip on chainsaws, trimmers, and other garden/construction power tools. The design features a rigid plastic structural core (for strength and mounting) overmolded with a soft, non-slip TPE/TPR rubber layer, combining structural integrity with superior user comfort and safety.

✅ Advanced Two-Shot Overmolding Technology

• Dual Material Integration: Rigid engineering plastic (PP/PA66+GF) core + soft TPE/TPR overmold, chemically bonded for zero delamination
• Precision Mould Design: Rotating platen or shuttle table two-shot mould system, ensuring perfect alignment and consistent overmold thickness
• Ergonomic Geometry: Optimized handle contour for reduced hand fatigue, with integrated mounting holes and structural ribs for tool assembly

✅ Automotive-Grade Mould Construction

• Mould Base Standards: Compliant with LKM, HASCO, DME international standards
• Premium Tool Steels: Cavity/core inserts manufactured with NAK80, S136(H), or H13 hardened steel, delivering 500,000–1,000,000+ shot lifespan
• Hot Runner System: Dual independent hot runner systems for each material, ensuring uniform filling and zero waste
• Advanced Cooling: Conformal water cooling channels + beryllium bronze inserts, minimizing cycle time and preventing warpage in complex geometries

✅ Material & Performance Advantages

• Core Material: High-strength PP, PA66+GF, or ABS, for structural rigidity and impact resistance
• Overmold Material: Soft TPE/TPR, offering excellent non-slip grip, vibration damping, and temperature resistance (-40°C to 80°C)
• Compliance: Fully RoHS, REACH, and UL compliant, meeting global power tool safety standards

✅ Precision Quality Control

• Tight tolerance control (±0.01mm) for perfect tool assembly fit
• Rigorous adhesion testing to ensure zero delamination under extreme operating conditions
• ISO 9001/14001 certified, with strict QC aligned with European/American power tool industry standards

We provide end-to-end overmolding solutions to streamline your production:

1. DFM Analysis: Proactive design optimization for overmold manufacturability, material bonding, and cost reduction
2. Mould Design & Manufacturing: Expert two-shot mould engineering, precision CNC/EDM machining, and full assembly
3. Mould Trial & Validation: Comprehensive testing for material adhesion, dimensional accuracy, and production efficiency
4. Value-Added Services: Injection molding, secondary operations, and assembly support
5. Lifelong After-Sales Support: Technical guidance, spare parts supply, and maintenance services

• Specialized Overmolding Expertise: Decades of experience in two-shot injection moulding for power tool components
• Full In-House Manufacturing: Complete set of mould making and two-shot injection machines for end-to-end quality control
• Short Lead Times & Cost-Effectiveness: Streamlined production workflows for fast delivery at competitive factory-direct pricing
• Global OEM Experience: Proven track record serving leading power tool brands worldwide, adhering to strict industry standards

Our overmolding solutions are widely used for:

• Power tool handles (chainsaws, trimmers, drills, saws)
• Garden tool grips and ergonomic components
• Power tool housing and vibration-damping parts
• Handheld industrial tool ergonomic upgrades