China Extrusion Blow Moulding Machine

1.How does the pressure system of a China extrusion blow moulding machine work?

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The pressure system of a blow molding machine is responsible for creating and maintaining the necessary pressure to inflate the parison (hollow tube of plastic) and shape it into the desired product. This system typically consists of three main components: the air compressor, the accumulator, and the pressure regulator.
1. Air Compressor: The air compressor is the heart of the pressure system. It supplies compressed air to the machine at a high pressure, typically between 100-150 psi. This compressed air is stored in a tank and then fed into the accumulator.
2. Accumulator: The accumulator is a large tank that stores the compressed air from the air compressor. It acts as a buffer, ensuring a steady supply of air to the machine. The accumulator also helps to regulate the pressure and flow of air to the mold.
3. Pressure Regulator: The pressure regulator is responsible for controlling the amount of air that is released from the accumulator into the mold. It is connected to the accumulator and the mold and is set to maintain a specific pressure level during the blow molding process.
The pressure system works in the following steps:
1. The air compressor compresses air and stores it in the accumulator tank.
2. The accumulator tank releases the compressed air into the pressure regulator.
3. The pressure regulator controls the flow of air into the mold, maintaining a specific pressure level.
4. The mold is closed and the parison is placed inside.
5. The mold is then clamped shut and the parison is inflated with the compressed air, taking the shape of the mold.
6. Once the plastic has cooled and solidified, the mold is opened and the finished product is ejected.
7. The pressure system continues to supply compressed air to the mold until the desired product is formed.
The pressure system is crucial in ensuring the quality and consistency of the blow molded products. It must be carefully monitored and maintained to ensure proper pressure levels are maintained throughout the process.

2.How to choose the mold head of a China extrusion blow moulding machine?

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1. Determine the type of blow molding machine: The first step in choosing the mold head is to determine the type of blow molding machine you have. There are three main types of blow molding machines: extrusion blow molding, injection blow molding, and stretch blow molding. Each type requires a different type of mold head.
2. Consider the material: The material you will be using for your product is also an important factor in choosing the mold head. Different materials have different properties and require different mold heads. For example, if you are using a high-density polyethylene (HDPE) material, you will need a mold head with a larger opening to accommodate the material's higher melt flow rate.
3. Determine the shape and size of the product: The shape and size of the product you want to produce will also play a role in choosing the mold head. The mold head needs to be able to create the desired shape and size of the product. If you are producing a complex shape, you may need a mold head with multiple cavities or a custom-made mold head.
4. Consider the production volume: The production volume also needs to be taken into account when choosing the mold head. If you are producing a large volume of products, you may need a mold head with multiple cavities to increase production efficiency.
5. Check the compatibility with the machine: It is important to ensure that the mold head you choose is compatible with your blow molding machine. The mold head needs to fit securely and work seamlessly with the machine to produce high-quality products.
6. Look for quality and durability: The mold head is a crucial component of the blow molding process, and it is important to choose one that is of high quality and durable. Look for mold heads made from high-quality materials and with a good track record of performance.
7. Consider the cost: The cost of the mold head is also an important factor to consider. While it is important to choose a high-quality and durable mold head, it is also important to stay within your budget. Compare prices from different suppliers and choose one that offers a good balance of quality and cost.
8. Consult with experts: If you are unsure about which mold head to choose, it is always a good idea to consult with experts in the field. They can provide valuable insights and recommendations based on your specific needs and requirements.

3.Does a plastic blow dryer make PETG or Triton bottles?

Yes, the plastic blow molding machine of Leshan can make PETG and Triton bottles, and their blow molding machine can also make quadruple die heads.

4.What is the working principle of a blow molding machine?

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The working principle of a blow molding machine involves the use of compressed air to inflate a molten plastic tube or parison inside a mold cavity. This creates a hollow shape that is then cooled and solidified to form a plastic product.
The process begins with the plastic material, usually in the form of pellets, being fed into a hopper and then melted in an extruder. The molten plastic is then forced into a long tube or parison, which is then clamped between two halves of a mold.
Next, a nozzle is inserted into the parison and compressed air is blown into it, causing the plastic to expand and take the shape of the mold cavity. The mold is cooled to solidify the plastic, and then the mold halves are separated, and the finished product is ejected.
The blow molding process can be either extrusion blow molding or injection blow molding, depending on the type of machine used. In extrusion blow molding, the parison is formed by extruding the molten plastic through a die, while in injection blow molding, the parison is formed by injecting the molten plastic into a mold cavity.
The working principle of a blow molding machine is based on the principles of thermodynamics and fluid mechanics, where the expansion of compressed air inside the parison creates pressure that forces the plastic to take the shape of the mold. This process allows for the production of hollow plastic products with complex shapes and sizes.

5.What waste materials will be generated during the production process of China extrusion blow moulding machine?

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1. Plastic waste: Blow molding machines use plastic materials such as polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET) to produce plastic products. These materials are often left as waste after the production process.
2. Scrap plastic: During the production process, there may be excess or defective plastic parts that are not suitable for use. These scraps are considered waste and need to be properly disposed of.
3. Residual materials: Some materials, such as colorants and additives, may be left over after the production process. These materials may also be considered waste and need to be disposed of properly.
4. Packaging waste: Blow molding machines often require packaging materials such as cardboard boxes, plastic bags, and bubble wrap for shipping and storage. These materials can generate waste during the production process.
5. Cleaning waste: Blow molding machines need to be cleaned regularly to maintain their efficiency. This process can generate waste such as cleaning agents, rags, and other materials.
6. Energy waste: The production process of blow molding machines requires energy, which can result in waste in the form of emissions and by-products.
7. Water waste: Some blow molding machines use water for cooling or lubrication purposes. This water may become contaminated during the production process and need to be properly treated before disposal.
8. Metal waste: Some blow molding machines may use metal components, such as molds and machine parts, which can generate metal waste during the production process.
9. Hazardous waste: Some materials used in blow molding machines, such as solvents and chemicals, may be hazardous and require special handling and disposal methods.
10. Electronic waste: Blow molding machines may also contain electronic components that can become obsolete or damaged during the production process, resulting in electronic waste.

6.Is there a limit to the size range of China extrusion blow moulding machine?

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Yes, there is a limit to the size range of blow molding machines. The size range of blow molding machines is typically determined by the maximum volume of the mold cavity and the maximum clamping force of the machine. The maximum volume of the mold cavity can range from a few milliliters to several liters, while the maximum clamping force can range from a few tons to several hundred tons.
Therefore, the size range of blow molding machines can vary greatly depending on the specific machine and its capabilities. Generally, blow molding machines are used to produce plastic products ranging from small bottles and containers to larger items such as automotive parts and large industrial containers.

7.Why does the temperature of the barrel exceed the set value when the extruder blow molding machine is working fully automatically?

Extrusion requires accurate control of the temperature of each area. The heat comes from the heating element on the one hand, and the internal shear heat on the other. So, you want to check whether the fan is broken, or the screw does not adapt to the plastic you choose, need to change the plastic or need to change the screw.You can also ask questions on Leshan's website, and their technicians can respond to your questions.

8.What is the level of automation of China extrusion blow moulding machine?

We have advantages in marketing and channel expansion. Suppliers have established good cooperative relations, continuously improved workflows, improved efficiency and productivity, and provided customers with high -quality products and services.
The level of automation of blow molding machines can vary depending on the specific machine and its capabilities. Some blow molding machines may have basic automation features such as automatic preform loading and bottle ejection, while others may have more advanced automation capabilities such as automatic mold changeovers, robotic handling of bottles, and integrated quality control systems. Overall, the level of automation in blow molding machines has increased in recent years with the development of new technologies and advancements in the industry.

9.Why does the blow molding machine make so much noise when it exhausts?

The exhaust valve is blocked or the exhaust valve and exhaust pipe are too small.

10.How long does it usually take to troubleshoot China extrusion blow moulding machine?

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The time it takes to troubleshoot a blow molding machine can vary depending on the specific issue and the experience of the technician. In some cases, it may only take a few minutes to identify and fix the problem, while in more complex cases it may take several hours or even days to fully troubleshoot and resolve the issue. It is important to thoroughly diagnose and address any problems with the machine to ensure it is functioning properly and producing high-quality products.

11.What factors will affect the production efficiency of China extrusion blow moulding machine?

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1. Machine Design and Technology: The design and technology of the blow molding machine play a crucial role in its production efficiency. A well-designed machine with advanced technology can produce more products in less time.
2. Type of Material: The type of material used for blow molding can significantly affect the production efficiency. Some materials, such as HDPE, are easier to process and can result in higher production rates compared to others.
3. Mold Design and Quality: The design and quality of the mold used in the blow molding process can also impact production efficiency. A well-designed and high-quality mold can produce more consistent and precise products, resulting in higher production rates.
4. Machine Maintenance: Regular maintenance of the blow molding machine is essential to ensure its optimal performance. Neglecting maintenance can lead to breakdowns and downtime, reducing production efficiency.
5. Operator Skill and Training: The skill and training of the machine operator can also affect production efficiency. A trained and experienced operator can operate the machine more efficiently, resulting in higher production rates.
6. Production Volume and Batch Size: The production volume and batch size can also impact the production efficiency of blow molding machines. Larger production volumes and batch sizes can result in higher efficiency due to reduced setup and changeover times.
7. Ambient Conditions: The ambient conditions, such as temperature and humidity, can affect the production efficiency of blow molding machines. Extreme temperatures or high humidity can affect the quality of the products and slow down the production process.
8. Automation and Control Systems: The level of automation and control systems used in the blow molding machine can also impact production efficiency. Advanced automation and control systems can improve process control and reduce human error, resulting in higher production rates.
9. Energy Efficiency: The energy efficiency of the blow molding machine can also affect its production efficiency. Energy-efficient machines can reduce operating costs and increase production rates.
10. Quality Control: The implementation of a robust quality control system can also improve production efficiency. By identifying and addressing defects early on, the machine can produce more high-quality products in less time.

12.How to control temperature and pressure during the production process of China extrusion blow moulding machine?

We focus on our customers' needs and strive to meet their expectations, so we take this very seriously.
1. Use a temperature controller: A temperature controller is an essential tool for controlling the temperature during the production process of blow molding machines. It allows you to set and maintain the desired temperature for the different stages of the process.
2. Monitor the temperature regularly: It is important to monitor the temperature of the machine regularly to ensure that it is within the desired range. This can be done using a thermometer or a temperature sensor.
3. Adjust the temperature settings: Depending on the type of material being used and the stage of the production process, the temperature settings may need to be adjusted. For example, a higher temperature may be required for melting the plastic, while a lower temperature may be needed for cooling the molded product.
4. Use a cooling system: To control the temperature during the cooling stage, a cooling system can be used. This can be in the form of a water chiller or a cooling tower, which helps to maintain a consistent temperature for the molded product.
5. Use a pressure regulator: A pressure regulator is used to control the pressure inside the machine. This is important for ensuring that the plastic is evenly distributed and that the final product has the desired shape and thickness.
6. Monitor the pressure: Just like temperature, it is important to monitor the pressure inside the machine regularly. This can be done using a pressure gauge or a pressure sensor.
7. Adjust the pressure settings: Depending on the type of material and the desired product, the pressure settings may need to be adjusted. This can be done manually or through the use of an automated pressure control system.
8. Use safety valves: Safety valves are important for maintaining the pressure within safe limits. They help to prevent any accidents or damage to the machine.
9. Train operators: It is important to train operators on how to control the temperature and pressure during the production process. They should be familiar with the different settings and know how to make adjustments when necessary.
10. Regular maintenance: Regular maintenance of the machine is crucial for ensuring that the temperature and pressure control systems are functioning properly. This will help to prevent any unexpected issues during the production process.