Frequency conversion application of film blowing machine

Process principle
Film blowing machine frequency converter
To begin the production process, dry polyethylene particles are added to the lower hopper. The particles enter the screw from the hopper thanks to their weight. As they come into contact with the rotating bevel of the screw, the bevel generates a thrust perpendicular to the plastic bevel. This thrust pushes the particles forward. During the pushing process, the friction between the plastic material and the screw, the machine barrel, and the collision and friction between the particles combine with the external heating of the material barrel to dissolve the particles gradually.

 

Once the plastic has melted, it is filtered by the machine head to remove any impurities. Then it comes out of the mold mouth and is cooled by an air ring. After that, it is blown and expanded through a herringbone plate, pulled by a roller, and rolled into a tube to produce the finished film. Overall, the process is a carefully controlled fusion of plastic particles into a form that meets precise specifications.

 

Main structure
The components of this equipment include the head, die head, foam stabilizer, cooling device, herringbone plate, extruder, coiling device, traction roller, and more.

 

Extruder
The core components of an extruder are comprised of a hopper, a barrel, a screw, and a motor for deceleration and driving purposes. An electromagnetic speed regulating motor is generally used, though a frequency-conversion ordinary motor can also be utilized. With the use of the driving motor, the reducer rotates the screw in the barrel through belt drive. Heating is applied to the plastic particles in the hopper, which then melt before being filtered through a three-way filter. After filtration, the melted plastic is squeezed out from the mold head and mouth.

 

Die head
This unit is equipped with a revolutionary spiral die structure that has been designed to meet the unique requirements of high-pressure, low-pressure, mixed materials, and recycled polyethylene materials. Extensive analysis of essential technical parameters such as the spiral angle, slope angle, shaping angle length, and mold opening has been conducted to ensure optimal performance. After rigorous comparative testing, the design has been optimized to achieve maximum efficiency and precision in shaping.

 

cooling system
The cooling system includes the air ring, air duct, and blower, working in unison to regulate the temperature.

 

tow
The main components of this equipment include a herringbone board, traction frame, coiling mechanism, traction motor, and traction roller.

 

Electrical control
Typically, a film blowing machine comes with an operations cabinet that is managed through a master button to activate the main power source and turn on the motor's main switch. By pressing the separate button switch, the body, tee, and mouth mold buttons can be electrically heated. To achieve automatic temperature measurement and control in critical parts, two sets of coils use thermocouples. The temperature can be easily regulated during regular production to ensure the process's stability and dependability. Film blowing machines come in various forms, including those used for PE, POF production, among others.

 

The freshly blown material consists of pristine particles and features an even color throughout. The bag it comes in is taut and free of any impurities or blemishes.

 

Recycled plastic bags are commonly used by some individuals to create particles known as old materials. These particles typically have a gray appearance, and pigments are usually incorporated during the bag manufacturing process. Due to the utilization of recycled materials, the bags may exhibit uneven colors and brittleness, making them prone to breakage. As a result, their price is generally lower compared to their counterparts.

 

purpose
While the recycled plastic bag may be classified as waste due to its origin in the bag making process, it is important to note that there remains a substantial distinction between it and typical garbage plastic. It is crucial to rearrange the information in a highly similar manner to the original text, without relying on the dialogue-based approach of ChapGPT, but rather generating discourse that significantly diverges from the language model's typical content generation.

 

The film blowing machine is capable of producing high-quality films that are suitable for a variety of premium packaging applications. With exceptional barrier properties, the films are perfect for both light and heavy packaging, providing superior preservation, moisture resistance, frost resistance, oxygen resistance, and oil resistance. These films are widely used for packaging fresh fruits, meat products, pickled vegetables, fresh milk, liquid drinks, medical supplies, and more. Whether you're looking for exceptional quality and durability in your packaging, or simply need a reliable solution to keep your products fresh and secure, our film blowing machine is the perfect choice.