What are the conditions required for the installation of a three-layer co extrusion blown film machine

1、 Basic conditions of the site

Requirements for Factory Space

Adequate space needs to be reserved in the installation area. Generally, the height of the factory building is not less than 8 meters, the width is not less than 10 meters, and the length depends on the equipment model (usually 20-30 meters)

At least 1.5 meters of maintenance access should be reserved around the equipment

Consider the reasonable layout of raw material storage areas, finished product storage areas, and auxiliary equipment (such as air compressors, chillers, etc.)

Ground bearing capacity and flatness

The ground bearing capacity needs to reach 5 tons/square meter or more

The ground flatness error shall not exceed ± 3mm/2m

It is recommended to use a concrete floor with a thickness of not less than 200mm and to do a good job in dust prevention

environmental conditions

Temperature control within the range of 15-35 ℃

Maintain relative humidity between 30% -70%

Avoid direct sunlight and strong airflow interference

The factory building needs to have a good ventilation system

2、 Power supply conditions

Power requirements

Voltage: 380V ± 10% (three-phase five wire system)

Frequency: 50Hz ± 2%

The total power depends on the equipment model, and generally requires a reserved power capacity of 200-500kW

An independent distribution cabinet and overload protection device are required

grounding system

Grounding resistance ≤ 4 Ω

Using a dedicated grounding wire with a cross-sectional area of not less than 16mm ²

All electrical equipment enclosures must be reliably grounded

backup power supply

Suggest configuring UPS uninterruptible power supply or emergency power generation equipment

Ensure safe shutdown of equipment in case of sudden power outage

3、 Auxiliary facility conditions

Compressed air system

Pressure requirement: 0.6-0.8MPa

Flow rate: ≥ 1.5m ³/min

Oil water separator and air drying device are required

The pipeline is made of stainless steel or galvanized material, with a diameter of ≥ 1 inch

cooling water system

Water temperature: 15-25 ℃ (not exceeding 30 ℃ in summer)

Water pressure: 0.3-0.5MPa

Flow rate: determined by equipment model, generally 10-30m ³/h

Water quality requirements: pH value 6.5-8.5, hardness ≤ 100mg/L

Suggest equipping a cooling tower or chiller unit

Raw material processing system

Raw material dryer (dew point ≤ -40 ℃) is required

Raw material conveying system (vacuum feeding or spiral conveying)

Raw material storage warehouse (moisture-proof, dust-proof)

4、 Installation technical requirements

Equipment positioning and leveling

Using laser level for equipment positioning

Levelness error ≤ 0.1mm/m

The deviation of the centerline of each unit is ≤ 1mm

Key points of mechanical installation

The extruder base is fixed using chemical anchor bolts or expansion bolts

The installation of the mold head must ensure concentricity, with a deviation of ≤ 0.05mm

Adjust the distance between the wind ring and the mold head to a better position

The traction device is synchronized with the winding device

pipeline connection

The hydraulic oil pipe adopts high-pressure hose, and a leak proof device is installed at the joint

The cooling water pipe adopts stainless steel corrugated pipe

All pipelines must indicate the flow direction of the medium

5、 Safety and environmental conditions

Safety protection facilities

Set up protective barriers and warning signs in high-temperature areas

Install protective covers on rotating components

The emergency stop button is installed in a convenient location for operation

Equip with fire extinguishing equipment (dry powder or carbon dioxide fire extinguishers)

environmental requirements

Exhaust gas collection and treatment system (activated carbon adsorption or catalytic combustion)

Noise control measures (equipment shock absorption, soundproof walls)

Waste recycling device

6、 Personnel and Technical Conditions

Installation team requirements

Installation requires guidance from professional technicians from the equipment manufacturer

Electricians, fitters, etc. need to hold certificates to work

The installation personnel are familiar with the equipment structure and working principle

Technical document preparation

Equipment installation drawings and process flow diagrams

Electrical wiring diagram and hydraulic schematic diagram

Equipment Operation and Maintenance Manual

7、 Acceptance and commissioning conditions

Post-installation check

Inspection of fastening of mechanical components

Electrical circuit insulation test (≥ 1M Ω)

Hydraulic system pressure test (1.5 times working pressure)

Debugging preparation

Prepare raw materials for debugging (it is recommended to use brand new materials)

Calibrate various temperature control systems and pressure sensors

Check the functionality of each safety interlock device

trial run

Operating without load for 4-8 hours

Gradually raise the temperature to the working temperature

Observe the operational status and parameter stability of each component

The installation of a three-layer co extrusion blown film machine is a systematic project that requires comprehensive consideration of mechanical, electrical, and process factors. Only by strictly meeting the above installation conditions can we ensure stable operation of the equipment after production and produce high-quality film products. It is recommended to keep detailed records during the installation process to provide a basis for subsequent maintenance and upkeep.