Vacuum Thermoforming Blow Molding Machine
Vacuum Thermoforming Blow Molding Machine
A vacuum thermoforming blow molding machine integrates the vacuum thermoforming process (heating plastic sheets to soften, then using vacuum suction to shape them against a mold) and the blow molding process (extruding plastic parison, then inflating it with compressed air to form hollow products) into one seamless production line[1][10]. The core advantage of this integrated design is its ability to handle both thin-walled, shaped parts and hollow products, eliminating the need for multiple separate machines and reducing production costs. The working principle varies slightly based on the product type (thin-walled thermoformed parts vs. hollow blow-molded parts), but the core logic remains consistent: automate each production link to ensure high efficiency, precise shaping, and uniform product quality.
Technical Parameter Table
|
Parameter |
Semi-Automatic (Small-Scale) |
Fully Automatic (Medium-to-Large Scale) |
Industrial-Grade (High-Volume) |
|---|---|---|---|
|
Production Capacity |
500-2000 pieces/hour (mixed thermoforming + blow molding) |
2000-15000 pieces/hour |
15000-50000 pieces/hour |
|
Applicable Raw Materials |
PE, PP, PVC, PET sheets (0.1-1.5mm); PE, PP granules |
PE, PP, PVC, PET, PLA sheets (0.1-3.0mm); PE, PP, PET, PVC granules |
PE, PP, PET, PVC, PLA, ABS sheets (0.2-3.0mm); PE, PP, PET, PVC, ABS granules |
|
Vacuum Thermoforming Parameters |
Heating temp: 80-200℃; Vacuum degree: -0.06~-0.08MPa; Forming area: 300×400mm; Sheet width: 300-800mm |
Heating temp: 80-220℃; Vacuum degree: -0.07~-0.09MPa; Forming area: 500×800mm; Sheet width: 500-1200mm |
Heating temp: 80-230℃; Vacuum degree: -0.08~-0.095MPa; Forming area: 800×1600mm; Sheet width: 800-1600mm |
|
Blow Molding Parameters |
Extruder screw diameter: 30-45mm; Parison diameter: 20-80mm; Blow pressure: 0.6-0.8MPa; Product volume: 50ml-5L |
Extruder screw diameter: 45-80mm; Parison diameter: 50-150mm; Blow pressure: 0.7-1.0MPa; Product volume: 50ml-20L |
Extruder screw diameter: 80-120mm; Parison diameter: 100-300mm; Blow pressure: 0.8-1.2MPa; Product volume: 1L-50L |
|
Temperature Control Precision |
±3℃ (basic digital control) |
±2℃ (PID control) |
±1℃ (advanced PID control) |
|
Power Supply |
220V single-phase, 5-15kW |
380V three-phase, 15-50kW |
380V three-phase, 50-120kW |
|
Air Pressure |
0.4-0.8MPa (manual adjustment) |
0.5-1.0MPa (pneumatic control) |
0.6-1.2MPa (hydraulic-pneumatic control) |
|
Machine Dimensions (L×W×H) |
2000×1000×1800mm (compact floor-mounted) |
4000×1500×2500mm (floor-mounted) |
8000×2000×3500mm+ (industrial line) |
|
Machine Weight |
300-800kg |
800-3000kg |
3000-10000kg |
|
Automation Level |
Semi-automatic (manual feeding, semi-auto forming/trimming) |
Fully automatic (integrated feeding to collection, PLC control) |
Fully automatic (continuous production, remote monitoring, auto mold change) |
|
Operator Requirement |
2-3 operators |
1-2 operators (supervision only) |
2-3 operators (line supervision + maintenance) |
|
Key Features |
Basic dual-process function, simple operation, low cost, small footprint |
PLC touchscreen, PID temp control, auto trimming, waste collection, programmable presets |
Dual-motor drive, continuous extrusion/forming, waste recycling, remote fault diagnosis, multi-station design |
|
Certifications |
CE, RoHS |
CE, RoHS, ISO, FDA (food/medical grade optional) |
CE, RoHS, ISO, FDA, GMP (medical grade) |
Core Components
PLC Digital Control System
Equipped with an intuitive 10-15 inch LCD touchscreen (adopting Siemens, Omron, or Panasonic components), supporting precise adjustment of temperature, pressure, vacuum degree, forming time, and extrusion speed[8]. Advanced models feature programmable presets (up to 15+ presets), real-time fault alerts, automatic counting, and remote monitoring, reducing manual intervention and ensuring stable 24-hour operation. The system also integrates PID temperature control to maintain temperature precision within ±1-2℃, preventing material overheating or uneven forming.
Power & Transmission System
Composed of high-frequency variable-frequency motors, precision gearboxes, and stainless steel transmission chains, providing stable power output and stepless speed regulation (0-50 r/min for extrusion, 0-30 cycles/min for forming). The system adopts noise reduction design, with operating noise controlled below 75 dB, meeting industrial workshop environmental standards. For large-scale models, a dual-motor drive system is used to ensure consistent power during high-load operation.
Safety Protection System
Includes emergency stop buttons (installed at key operation points), infrared safety guards (preventing operator hands from entering the mold area), overheat protection, overload protection, and anti-leakage devices. For blow molding modules, anti-explosion valves are added to ensure safe operation of the air compression system. The machine automatically shuts down when abnormalities occur, protecting operators and equipment.
Waste Handling & Recycling System
Equipped with an automatic edge trimming device and waste collection box, which separates excess material (edge trim, leftover parison) from finished products during production. Advanced models feature a waste granulator, which crushes and recycles waste plastic into raw material particles, reducing material waste by 20-30% and lowering operational costs.
Cooling System
Adopts a dual cooling design (air cooling + water cooling) to ensure rapid cooling and shaping of products. The vacuum thermoforming module uses a wind-cooling system with adjustable air volume, while the blow molding module uses a water-cooled mold (with built-in cooling channels) to speed up cooling and improve production efficiency. The cooling water pressure and flow are adjustable to adapt to different plastic materials.
Process-Specific Components
Vacuum Thermoforming Module:
Heating Oven: Equipped with quartz heating tubes or infrared heaters (evenly arranged in upper and lower layers), with adjustable heating power (0-150kW) and multi-zone temperature control[1][8]. The oven is lined with vacuum insulation cotton to reduce heat loss by 30%, saving energy and ensuring uniform heating of plastic sheets (thickness 0.1-3.0mm). The heating temperature can be adjusted between 80-220℃ to adapt to different thermoplastic materials.
Forming Mold & Vacuum Pump:
The mold is made of high-quality aluminum alloy or steel, with a smooth surface to ensure the finished product has no burrs or scratches. The vacuum pump (with a vacuum degree of -0.06 to -0.09MPa) quickly extracts air between the softened plastic sheet and the mold, forming a vacuum negative pressure that adheres the sheet tightly to the mold surface. The mold can be customized into various shapes (shallow or deep drawing) to produce trays, blisters, and automotive interior parts.
Sheet Feeding System:
Automatically feeds plastic sheets (roll or cut sheets) into the heating oven, with a photoelectric positioning device to ensure accurate sheet alignment. The system supports sheet widths of 300-1600mm and can handle rolls up to 600kg in weight, reducing manual feeding and improving efficiency.
Trimming Mechanism:
After thermoforming, the automatic trimming knife trims excess edges, ensuring the finished product size is precise (error ≤±0.1mm). The trimming knife is adjustable to adapt to different product sizes.
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