What are the safety usage standards for Dalian blown film units?

The Dalian blown film unit is a widely used equipment in the production of plastic films. Its working principle is to process plastic particles into films through processes such as extrusion, blowing, and cooling. Due to the complex operations involved in high temperature, high pressure, mechanical transmission, etc., the blown film unit must strictly comply with safety regulations during use to ensure the safety of personnel and the normal operation of equipment.

1、 Safety preparation before operation

Equipment inspection

Before starting the blown film unit, a comprehensive inspection of the equipment must be conducted to ensure that all components are in good condition. The inspection includes:

Electrical system: Check whether the power lines, control panel, switches, etc. are intact to ensure that there are no leakage, short circuits, or other phenomena.

Mechanical components: Check whether the extruder, die head, air ring, traction roller, etc. are operating normally, ensuring no looseness, wear or jamming.

Cooling system: Check if the cooling water circulation is unobstructed, ensuring no leakage or blockage.

Lubrication system: Check the oil level and quality of the lubricating oil to ensure that all lubrication points are fully lubricated.

environment check

Ensure a clean working environment with no accumulation of debris and no oil or water stains on the ground to prevent slipping or tripping. At the same time, check if the ventilation system is functioning properly to avoid high temperatures and the accumulation of harmful gases.

personal protection

Operators must wear personal protective equipment that meets the standards, including:

Protective gloves: prevent high temperature burns or mechanical injuries.

Protective goggles: prevent splashing plastic particles or foreign objects from damaging the eyes.

Work clothes: Wear tight fitting work clothes to avoid clothes getting caught in the machine.

Safety shoes: prevent heavy objects from injuring or slipping.

Training and Authorization

Only personnel who have received professional training and obtained operational qualifications can operate the blown film unit. Unauthorized personnel are not allowed to operate the equipment without authorization.

2、 Safety regulations during operation

Start the program

Strictly follow the start-up procedure in the operation manual to avoid equipment damage or accidents caused by improper operation. Before starting, ensure that all personnel stay away from the operating area of the equipment.

temperature control

The blown film unit will generate high temperatures during operation, and operators should closely monitor the temperature changes in each heating zone to ensure that the temperature is controlled within the set range. Avoid excessive temperature that may cause plastic decomposition or equipment damage.

Pressure monitoring

The internal pressure of the extruder is relatively high, and the operator should regularly check the pressure gauge to ensure that the pressure is within a safe range. If abnormal pressure is found, the machine should be stopped immediately for inspection, and the fault should be eliminated before continuing to operate.

Mechanical operation

During the operation of the equipment, it is strictly prohibited to insert hands, tools, or other objects into the mechanical transmission parts to prevent injury or entanglement. Meanwhile, avoid cleaning or maintenance operations while the equipment is in operation.

Emergency shutdown

The equipment should be equipped with an emergency stop button. When the operator discovers abnormal situations (such as abnormal equipment noise, high temperature, excessive pressure, etc.), they should immediately press the emergency stop button, cut off the power, and notify relevant personnel for handling.

Material addition

When adding plastic pellets, ensure that the material is dry and clean to avoid impurities entering the extruder. At the same time, adding materials should be done slowly to avoid overloading the equipment due to excessive addition.

3、 Safety regulations after operation

Shutdown Procedure

After completing the production task, the equipment should be gradually shut down according to the shutdown procedure in the operation manual. Stop the extruder first and turn off the cooling system and power after the temperature drops to a safe range.

Cleaning and maintenance

After shutdown, the equipment should be cleaned to remove residual plastic particles and oil stains. At the same time, regularly maintain the equipment, check the wear and tear of vulnerable parts, and replace them in a timely manner.

Record and report

The operator should record in detail the operation of the equipment, including temperature, pressure, output, and other data. If any equipment malfunction or abnormality is found, it should be reported to the superior in a timely manner and maintenance should be arranged.

security check

During the equipment shutdown period, regular safety checks should be conducted to ensure that the equipment is in good condition. At the same time, check whether the safety protection device is intact to ensure safety and reliability for the next use.

4、 Special case handling

Equipment failure

If the equipment malfunctions during operation, the operator should immediately stop the machine and notify professional maintenance personnel for inspection. It is strictly prohibited to forcefully operate the equipment in a faulty state to avoid causing greater damage or safety accidents.

Fire prevention

The blown film unit has fire hazards during high-temperature operation, and the work area should be equipped with fire extinguishers and other fire-fighting equipment. If a fire occurs, immediately cut off the power supply, use a fire extinguisher to extinguish the source of the fire, and call the fire alarm number.

Personnel injured

If personnel are injured during the operation, the equipment should be immediately stopped and the injured should be given first aid treatment. At the same time, promptly report to superiors and arrange for medical treatment.

The safe use of blown film units is an important guarantee for ensuring smooth production and personnel safety. Operators must strictly comply with the above regulations, receive regular safety training, and enhance safety awareness. At the same time, enterprises should establish a sound safety management system, regularly inspect and maintain equipment, and ensure that the equipment is in good condition. Only through full participation and strict implementation can safety accidents be effectively prevented and production proceed smoothly.