🎯 Injection Molding
High-Precision Thermoplastic Manufacturing Services
🌍 Overview
Injection molding is our core competency. Tuohai Tech operates 50+ injection molding machines ranging from 60 to 800 tons, producing precision plastic components for automotive, medical, electronics, and industrial applications. Our expertise spans prototype to high-volume production.
📊 Molding Capabilities
- 50+ injection molding machines (60-800 tons)
- Shot capacity: 30g to 5,000g
- Tolerance: ±0.01mm to ±0.05mm
- 100+ thermoplastic materials
- Annual capacity: 10+ million parts
🔧 Molding Processes
Thermoplastic Molding
Standard injection molding for high-volume production of thermoplastic parts.
- ABS, PC, PP, PE
- Fast cycle times
- High repeatability
- Cost-effective
- Recyclable materials
LSR Molding
Liquid Silicone Rubber molding for flexible, biocompatible components.
- Medical grade silicone
- Temperature resistant
- Flexible properties
- Biocompatible
- Two-shot capable
Two-Shot Molding
Multi-material molding combining different plastics or colors in one cycle.
- Soft-touch grips
- Sealed assemblies
- Multi-color parts
- Reduced assembly
- Enhanced functionality
Insert Molding
Molding plastic around metal inserts for integrated components.
- Threaded inserts
- Electrical contacts
- Reinforced bosses
- Hybrid assemblies
- Reduced assembly cost
📊 Technical Specifications
| Parameter | Range | Application |
|---|---|---|
| Clamping Force | 60 – 800 tons | Small to large parts |
| Shot Weight | 30 – 5,000g | Miniature to heavy |
| Part Tolerance | ±0.01 – 0.05mm | Precision to general |
| Platen Size | Up to 1,200 × 1,000mm | Large molds |
| Tie Bar Spacing | Up to 900 × 800mm | Mold compatibility |
| Dry Cycle Time | 10 – 60 seconds | Production efficiency |
🎨 Surface Finishing
Texture & Polish
We offer comprehensive surface finishing to meet aesthetic and functional requirements.
- SPI Polish: A1 (mirror) to D3 (stone)
- VDI 3400: EDM textures from fine to coarse
- Mold-Tech: Custom texture patterns
- Laser Etching: Logos, serial numbers
Secondary Operations
Post-molding operations to enhance part functionality and appearance.
- Painting: Spray, UV coating, soft-touch
- Printing: Pad printing, screen printing
- Plating: Chrome, nickel, PVD coating
- Bonding: Ultrasonic, adhesive assembly
🔬 Material Expertise
| Category | Materials | Applications |
|---|---|---|
| Commodity | PP, PE, PS, ABS | Consumer products |
| Engineering | PC, PA, POM, PBT | Technical parts |
| High-Performance | PEEK, PEI, PPS | Demanding apps |
| Elastomers | TPE, TPU, LSR | Flexible parts |
| Specialty | Conductive, flame retardant | Specialized uses |
✅ Quality Assurance
- First Article Inspection: Complete dimensional validation
- In-Process Control: Statistical process monitoring
- Final Inspection: AQL sampling per ISO 2859
- CMM Measurement: Coordinate measuring verification
- Visual Standards: Master samples for comparison
- Material Verification: FTIR, MFI testing
💡 Process Optimization
Our engineers use scientific molding principles to optimize cycle times, reduce scrap, and ensure consistent quality across production runs.
📞 Start Your Project
Expert injection molding from prototype to production.