China Suppliers Factory for Two-Color Mould of Central Control Storage Box Lid with Hot Runner System
This mold is specifically designed for two-color injection molding processes. Both the cavity and core material are made of P20 pre-hardened plastic mold steel, ensuring high wear resistance and dimensional stability. The mold base is made of 45# carbon structural steel, balancing strength and cost-effectiveness. The ejector system integrates a pin-type ejector and ejector plate for efficient demolding. The hot runner system, combined with a standard side gate, optimizes the injection process. The dual water-cooling channel design improves cooling efficiency and shortens the production cycle. The mold supports simultaneous molding of two grooves (right groove + left groove) to meet the needs of complex structures.
P20 steel is pre-hardened (HRC 28-32), which is wear-resistant and corrosion-resistant, and suitable for high-precision injection molding; 45# steel mold base is heat-treated, with excellent comprehensive mechanical properties.
The two-color injection cavity and core material are integrated to reduce splicing errors; the hot runner system reduces scrap rate; and the side gate structure simplifies mold complexity.
Dual water cooling channels provide uniform heat dissipation, preventing localized overheating and deformation, and improving the surface finish of the product.
Supports simultaneous molding of multiple tooth sockets, adapts to left/right tooth structures, and has strong scalability.
Interior components such as the central control storage box cover require two-color injection molding and high dimensional precision.
Complex structural shells, such as two-color buttons and decorative panels, require wear resistance and deformation resistance.
Small, precision parts that require efficient demolding and mass production, such as connectors and snap-fit products.
| 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 |
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What material is used for the cavity and core of this two-color injection mold?Both the cavity and core are made from P20 pre-hardened plastic mold steel (HRC 28-32), offering excellent wear resistance, corrosion resistance, and dimensional stability — ideal for high-precision two-color injection molding applications.
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How does the hot runner system benefit the injection molding process?The hot runner system minimizes material waste by reducing or eliminating cold runners, lowering the scrap rate, and improving overall production efficiency. Combined with a standard side gate, it simplifies mold complexity and delivers consistent part quality.
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What types of products is this mold best suited for?This mold is ideal for automotive interior parts (e.g., central control storage box covers), home appliance housings (e.g., two-color buttons and decorative panels), and small precision industrial components such as connectors and snap-fit parts that require efficient mass production.
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How does the dual water-cooling channel system improve production quality?The dual water-cooling channel design ensures uniform heat dissipation across the mold surface. This prevents localized overheating and thermal deformation, which results in better surface finish on finished parts and a significantly shorter production cycle.
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Can this mold produce both left and right groove structures simultaneously?Yes. The mold is designed with 2 cavities (right + left) to support simultaneous molding of two groove structures in a single cycle. It also adapts to various left/right tooth configurations and offers strong scalability for complex structural requirements.
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What ejection system does this mold use, and why is it effective?The mold integrates a pin-type ejector combined with an ejector plate system. This dual-mechanism approach enables smooth, efficient demolding of complex two-color parts while minimizing the risk of part deformation or surface damage during ejection.