Liquid Silicone Rubber Coffee Cup Lid Molding Machine
Reusable Cup Lid Production Equipment
This advanced LSR injection molding machine is designed for high-efficiency production of reusable silicone coffee cup lids, offering precision, reliability, and automation for industrial manufacturing.
Industry Applications
Maternal and Baby Industry
The safety and clean forming process of liquid silicone materials make them ideal for producing various silicone products including nipples, pacifiers, teethers, bottles, spoons, and brushes.
Medical Industry
Widely used for medical silicone accessories such as catheters, gastric tubes, laryngeal masks, dental brackets, and incision protective covers due to excellent biological characteristics.
Electronics Industry
Perfect for waterproof seals, mobile phone cases, watch bands, buttons, and earphones thanks to its waterproof, elastic properties and high precision forming.
Automotive Parts Industry
Used in LED perspective mirrors, spark plug protectors, wire harness seals, and sealing strips due to high permeability and efficient production process.
Technical Specifications
| Clamping Force |
160 tons |
| Size |
1500 × 730 mm |
| Max Mold Size |
720 × 660 mm |
| Min Mold Height |
300 + 50 mm |
| Mold Stroke |
300 mm |
| Max Daylight |
600 + 50 mm |
| Ejector Force |
4 tons |
| Thimble Diameter |
Φ25 |
| Ejector Distance (Product) |
130 (100) mm |
| Max Hydraulic Pressure |
140 kg/cm² |
| Cooling Water |
1500-1800 liters/hr |
| Heater Power |
4 kW |
| Motor Power |
22 kW |
| Dimensions (L × W × H) |
2.86 × 2.76 × 3.30 m |
| Weight |
9.6 tons |
Technology Overview
Our liquid silicone injection molding machines utilize cold runner technology to precisely blend low-temperature liquid silicone components (A and B) in the correct ratio. The mixture is pressurized by a screw and injected into high-temperature mold cavities where rapid chemical cross-linking occurs, achieving high-precision, high-efficiency automated production.
Working Principle
1. Raw Material Delivery and Mixing
Liquid silicone rubber components (A with catalyst and B with cross-linking agent) are stored separately and conveyed in fixed ratio to a static mixer for thorough blending, with optional colorant additives.
2. Injection Molding
Mixed silicone is propelled through a non-return valve into the cold runner system (maintained at low temperature) and rapidly injected into preheated mold cavities.
3. High-Temperature Vulcanization
In the heated mold, components undergo rapid chemical cross-linking (thermal curing) to form stable, elastic silicone products.
4. Pressure Holding and Cooling
Constant pressure maintains dimensional accuracy during curing, followed by cooling and product removal.
5. Automated Repeat Production
The entire process operates as a cyclical automated sequence for maximum efficiency with minimal manual intervention.
Key Differentiators
- Uses liquid raw materials (vs. conventional solid materials)
- Thermosetting molding through chemical cross-linking (vs. cooling solidification)
- Cold runner technology with mold heating (vs. barrel heating in conventional machines)
- Higher precision and efficiency for silicone products
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