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China Plastic Mould Suppliers for Bumpers - High-Precision Factory Tools for Injection Molding
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
1
High Precision and Durability
◎ P20 steel mold core, dimensional error ±0.2mm, lifespan over one million cycles.
2
High-Efficiency Cooling
◎ The water cooling system reduces the molding cycle from 120 seconds to 60 seconds.
3
Flexible Configuration
◎ Supports multiple cavities and adjustable partitions to adapt to different product specifications.
4
Advanced Process
◎ Electrical discharge machining/wire cutting, surface roughness ≤ Ra0.4μm.
5
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
Contact us now for a quote and experience the difference of working with the best in the business.
Frequently Asked Questions
What materials can this car bumper mold process?
This mold is designed to process PP (polypropylene) and ABS as primary raw materials. These thermoplastics are widely used in automotive exterior parts due to their lightweight properties, impact resistance, and excellent surface finish compatibility.
How long is the expected lifespan of this injection mold?
The mold is manufactured with a P20 steel mold core and is engineered for a lifespan of over one million injection cycles. This makes it highly suitable for large-scale, long-term production runs in automotive manufacturing environments.
How does the cooling system improve production efficiency?
The mold features an optimized water cooling system with dedicated cooling channels. This advanced design reduces the molding cycle time from approximately 120 seconds to just 60 seconds — a 50% improvement — significantly increasing output capacity and reducing per-unit production costs.
Can the mold be customized for different bumper designs or vehicle models?
Yes. The mold supports flexible configuration including multiple cavities and adjustable partitions, allowing it to adapt to different product specifications. It can be quickly adjusted to accommodate model changes or special design requirements, making it ideal for both standard and customized production needs.
What ejection system does this mold use, and why does it matter?
The mold uses a dual ejection system combining a pin ejector and an ejector plate. This combination ensures stable and even demolding force distribution, significantly reducing the risk of mold sticking or part deformation during the ejection phase — especially important for large, thin-walled components like car bumpers.
What is the gate system used in this mold and what are its advantages?
This mold uses a hot runner system combined with a normal side gate. The hot runner system minimizes material waste, reduces cycle time, and improves surface quality by maintaining consistent melt temperature. This gate configuration is particularly effective for the high-volume, precision production demands of automotive exterior components.