Products Description
BMC Injection Molding Machine:
I. Mechanical Structure Advantages
High-Rigidity Clamping System
Utilizes double-toggle or direct-pressure clamping mechanisms for precise and stable clamping force with minimal platen deflection, preventing mold flash during high-filled BMC molding (containing 30%~60% glass/mineral fillers).
Reinforced Thick Platens & Tie Bars: Exhibits strong eccentric load resistance, adapting to asymmetric injection pressure caused by BMC's poor flow characteristics.
Wear-Resistant Protection Design
Critical moving parts (guide pillars, slide rails) feature enhanced dust seals to prevent ingress of BMC glass fibers and dust, minimizing wear.
Platen surfaces undergo hardening treatment to resist mechanical damage from glass fiber abrasion.
Precise Injection Unit Alignment
Employs rigid coupling between the injection unit and clamping unit to reduce vibration during high-pressure injection, ensuring shot repeatability (within ±0.3%).
II. Hydraulic System Advantages
High-Temperature & Contamination Resistance Design
High-Temperature Seals: Utilizes fluoroelastomer (FKM) or PTFE seals to withstand radiant heat from the BMC processing barrel (60~90°C) affecting the hydraulic circuit.
Multi-Stage Filtration System: Equipped with high-precision filters (≤10μm) to prevent glass fiber dust from contaminating hydraulic oil, extending pump/valve lifespan.
Precise Oil Temperature Control
High-Capacity Water-Cooled Cooler: Forcibly maintains oil temperature at 45~55°C, preventing viscosity drop and system pressure fluctuations due to overheating.
Independent Cooling Circuits: Provide targeted cooling for high-heat areas like the injection cylinder, enhancing stability.
Energy-Efficient Power System
Servo Motor-Driven Hydraulic Pump: Supplies oil on-demand, achieving 30%~50% energy savings compared to traditional fixed-displacement pumps, while reducing noise and oil temperature.
Proportional Valve Precision Control: Enables multi-stage, precise adjustment of injection/holding speed and pressure, adapting to BMC's high-viscosity flow characteristics.
III. Screw & Barrel Design Advantages
Dedicated BMC Screw Geometry
Ultra-Low Compression Ratio (1.0~1.2:1): Prevents excessive shear heating, causing premature BMC curing.
Shallow Flight Depth: Reduces material residence time, preventing localized curing and agglomeration.
No Mixing Sections: Eliminates shear elements to minimize glass fiber damage and preserve material strength.
Enhanced Wear & Corrosion Resistance
Bimetallic Barrel & Screw: Surface hardening layer (HV≥1000) resists abrasion from glass fibers and minerals.
Hard Chrome Plating or Nitriding: Improves corrosion resistance against acidic additives (e.g., release agents) in BMC.
Open Screw Tip & Special Non-Return Valve
Piston-Type Non-Return Valve: Ensures no backflow during high-pressure injection while facilitating easy cleaning of residual BMC.
Large Barrel Feed Opening: Simplifies disassembly and cleaning, reducing downtime.
Precise Temperature Control System
Multi-Zone Barrel Temperature Control (4~6 zones): Zone accuracy ±1°C, preventing localized overheating and material curing.
Optimized Water Cooling Channels: Responds quickly to temperature fluctuations, maintaining BMC in the ideal plasticizing state (60~80°C).
IV. Other Targeted Optimizations
Feeding System: Equipped with a forced feeding device (e.g., piston-type or star valve) to ensure stable conveying of high-viscosity BMC.
Mold Protection: Features highly sensitive, low-pressure mold protection to prevent damage from fiber-induced mold jams.
Corrosion-Resistant Coating: Anti-rust treatment on exposed metal parts, adapting to the chemical gases present in the BMC processing environment.
Core Value Summary
Feomtec's BMC-dedicated machine delivers value through:
✅ High-Rigidity, Wear-Resistant Structure → Ensures long equipment lifespan.
✅ Clean & Efficient Hydraulic System → Maintains power stability.
✅ Ultra-Low Shear Screw Design → Protects fiber integrity & prevents premature curing.
✅ Precise Temp Control & Feeding → Enhances product consistency (dimensions/strength).
Effectively addresses the three major challenges in BMC molding: wear, curing control, and fiber damage. Ideal for high-end applications like automotive components and electrical insulation parts.
