With the widespread application of blown film technology in packaging, medical treatment, agriculture and other fields, how to standardize operations and improve equipment efficiency has become the focus of the industry. Based on 20 years of technical accumulation, CORSTAR Machinery Co., Ltd. provides systematic guidance from installation and commissioning, daily operation to maintenance.
Core usage specifications
1. Start-up preparation stage
Raw material pretreatment: Strict drying is required (such as PET moisture content ≤50ppm), to avoid bubbles/crystal points
Temperature calibration: Temperature rise in stages according to material characteristics, with the error controlled within ±2℃ (automatically completed by CORSTAR intelligent temperature control system)
Die cleaning: Use copper tools to clean residues to prevent scratching of the flow channel
2. Production operation stage
Key parameter monitoring:
• Melt pressure fluctuation ≤±5% (if exceeded, filter blockage must be checked immediately)
• Bubble stability (using CORSTAR patented bubble stabilizer, deflection amplitude <10mm)
Thickness adjustment: Fine-tune point by point through the die bolt (≤5° rotation each time), with real-time feedback from the online thickness gauge
3. Safety warning
High temperature area: The die/screw temperature can reach 200-300℃, and thermal insulation protection is required
Emergency braking: When the equipment suddenly fails, the emergency stop button is triggered first instead of direct power off
Static protection: When producing metallized film, the grounding resistance must be <4Ω
Maintenance points
Daily maintenance:
• Clean the die lip material every shift
• Check the oil level of the gearbox every week
Regular maintenance:
• Polish the screw every month (roughness Ra≤0.8μm)
• Replace the hydraulic oil filter element every quarter (filtration accuracy 10μm)
According to industry statistics, standard operation can extend the life of the blown film machine by 30%-50%. Welcome to contact us for more professional and detailed usage guides, service hotline: 0760-23976182.
(Note: The specific technical parameters and application case results will change due to different environments and film technical parameters, and the actual data shall prevail)
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