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Plastic Mould for Bumpers - High Precision Injection Molding Solutions from China Suppliers and Factory

China suppliers offer high-precision plastic molds specifically designed for manufacturing automotive components, such as car bumpers. Our factory utilizes premium P20 steel to create these molds, which feature an advanced hot runner system, efficient water cooling technology, and a modular design. These innovations ensure optimal mass production efficiency, consistent part quality, and a longer tool lifespan, making our molds perfect for high-volume production of plastic bumpers. With a focus on precision engineering and durable materials, our products guarantee reliability and superior performance in large-scale manufacturing environments

Product Details

Product Overview

This mold uses injection molding to process PP/ABS and other raw materials into highly consistent car bumpers. Its core structure includes a P20 steel mold core, a 45# mold base, a hot runner gate, and a double-groove ejection system. Optimized cooling channels can shorten the molding cycle by 50%, meeting automotive industry standards for light weighting and impact resistance. It is suitable for mass production of exterior parts such as front/rear bumpers and door panels.

Product Features

High Precision and Durability

◎ P20 steel mold core, dimensional error ±0.2mm, lifespan over one million cycles.

High-Efficiency Cooling

◎ The water cooling system reduces the molding cycle from 120 seconds to 60 seconds.

Flexible Configuration

◎ Supports multiple cavities and adjustable partitions to adapt to different product specifications.

Advanced Process

◎ Electrical discharge machining/wire cutting, surface roughness ≤ Ra0.4μm.

Stable Demolding

◎ The dual system of pin ejector and ejector plate reduces the risk of mold sticking.

Use Cases

Automobile Manufacturing

Mass production of bumpers for gasoline and new energy vehicles to meet pedestrian protection and lightweight requirements.

Customization Needs

Quickly adjust molds to adapt to model changes or special designs.

Industrialized Production

A single mold can support continuous injection molding of more than 500,000 bumpers.

Technical Parameters

Cavity Material	P20 Steel
Core Material	P20 Steel
Mould Base Material	45#
Ejection System	Pin Ejector and Ejection Plate
Number of Cavity	2 Cavities (Right + Left)
Gate	Hot Runner System + Normal Side Gate
Cooling System	By Water

Conclusion

Frequently Asked Questions

This mold is designed to process PP (Polypropylene) and ABS (Acrylonitrile Butadiene Styrene) as primary raw materials. These thermoplastics are widely used in automotive exterior parts due to their excellent impact resistance, light weight, and surface finish compatibility.

The mold is manufactured with a P20 steel mold core and precision-machined to a dimensional tolerance of ±0.2mm. Under normal operating conditions, it is engineered to withstand over one million injection molding cycles, ensuring long-term production reliability and cost efficiency.

The mold uses an optimized water-based cooling channel design that efficiently dissipates heat from the molten material. This advanced cooling configuration reduces the molding cycle from approximately 120 seconds to just 60 seconds — a 50% improvement — significantly boosting production throughput.

Yes. The mold supports multiple cavities and features adjustable partitions, allowing it to be quickly reconfigured to accommodate different bumper designs, model changes, or special customization requirements. This makes it suitable for both standard production runs and bespoke automotive applications.

The mold utilizes a dual demolding system consisting of a pin ejector and an ejector plate working in combination. This dual-action mechanism uniformly distributes ejection force across the part surface, minimizing the risk of mold sticking, surface deformation, or damage to the finished bumper during demolding.

A single car bumper mold unit is capable of supporting continuous injection molding production of more than 500,000 bumpers. With the 2-cavity configuration (left + right), this translates to highly efficient industrialized production suitable for both OEM and aftermarket automotive supply chains.