Product Overview
This high-precision 2+1 cavity injection mold is purpose-built for mass production of high-gloss PC plastic plates，commonly used as electrical switch panels, socket faceplates and decorative covers.
Featuring a flexible 2+1 mixed cavity layout, the mold produces multiple part specifications in a single cycle. It adopts a large sprue with horn (submarine) gate system to ensure invisible gating marks and flawless surface quality. The cavity is made of premium 1.2083ESR mold steel (HRC 48-52) with high-gloss mirror polishing, while the core uses 1.2083 steel with semi-polished finish. Optimized for PC material with a 0.5% shrinkage rate, this tooling delivers consistent dimensional accuracy, excellent wear resistance and long-term stable performance for high-volume production.
Detailed Mold Specifications
| Specification | Details |
| Mold Cavity | 2+1 Mixed Configuration (3 cavities total) |
| Applicable Material | PC (Polycarbonate) |
| Shrinkage Rate | 0.5% (1.005) |
| Gating System | Large Sprue + Horn (Submarine) Gate |
| Cavity Steel | 1.2083ESR, HRC 48-52, High Gloss Mirror Polished |
| Core Steel | 1.2083, HRC 48-52, Semi-Polished Finish |
| Mold Life | 500,000+ Stable Shots |
| Typical Applications | Electrical switch panels, socket faceplates, appliance decorative covers |
![Electrical Switch Panels And Decorative Panel Mould]( "Electrical Switch Panels And Decorative Panel Mould")
Key Technical Advantages
1. Flexible 2+1 Mixed Cavity Design
The 2+1 cavity layout allows production of two different part specifications in one mold, eliminating the need for separate single-cavity tools. This design balances production efficiency and order flexibility, supporting both mixed and batch production requirements for multi-style PC plastic plates.
2. Large Sprue with Horn Gate System
PC material’s high viscosity requires stable, balanced filling. The large sprue ensures sufficient melt flow, while the horn (submarine) gate automatically breaks during ejection, leaving no visible marks on the product surface. This eliminates manual trimming, reduces labor costs and preserves the high-gloss appearance of PC parts.
3. Premium 1.2083ESR Cavity for High-Gloss Finish
The cavity is crafted from ESR-refined 1.2083 stainless steel, which offers ultra-pure texture, excellent anti-rust properties and superior polishing performance. After vacuum heat treatment to HRC 48-52, the steel maintains consistent hardness and wear resistance. The high-gloss mirror polishing delivers scratch-free, orange-peel-free surfaces for transparent and solid-color PC parts, requiring no secondary finishing.
4. Optimized Shrinkage Control & Dimensional Stability
Precisely calibrated for PC’s 0.5% shrinkage rate, the mold ensures accurate compensation across all cavities. The combination of balanced runner design and heat-treated mold steel prevents warpage, shrinkage and dimensional deviation, delivering consistent, interchangeable parts every cycle.
Finished PC Plastic Plate Features
Flawless High-Gloss Appearance: Mirror-smooth surface with no gate marks, weld lines or scratches
Durable PC Material Properties: Excellent impact resistance, flame retardancy and anti-yellowing performance
Precision Assembly Fit: Tight tolerance control ensures perfect alignment with electrical components
Low Maintenance: Semi-polished core balances demolding efficiency and mold longevity
Application Scenarios
This mold is ideal for producing PC plastic plates used in:
Household & commercial wall switch/socket panels
Smart home control panel covers
Low-voltage electrical equipment decorative parts
Consumer appliance high-gloss plastic covers
FAQ
Q: Why is the cavity polished to high gloss while the core uses a semi-polished finish?
A: The visible surface of the PC plate (formed by the cavity) requires a mirror finish for aesthetic appeal. The semi-polished core balances cost, demolding performance and structural durability without affecting the final product’s appearance.
Q: Can this mold produce transparent PC parts?
A: Yes. The high-gloss 1.2083ESR cavity and optimized horn gate system eliminate weld lines and flow marks, supporting production of both transparent and solid-color high-gloss PC plates.
Q: Is custom modification available for the mold?
A: Yes. We support custom adjustments to cavity size, hole positions, logo engraving and surface finishes based on your drawings or samples.
