The three-layer co extrusion blown film machine is a highly efficient and flexible plastic film production equipment with broad application prospects and market demand. In the future development, with the continuous improvement of people's requirements for the performance and functionality of packaging materials, three-layer co extrusion blown film machines will be increasingly valued and become one of the important equipment in the field of plastic film production.

The application fields of three-layer co extrusion blown film machine are very wide, mainly including food packaging, pharmaceutical packaging, building materials, and agricultural coverage. In the field of food packaging, a three-layer co extrusion blown film machine can produce transparent, high-temperature resistant, and moisture resistant packaging films, maintaining the freshness and hygiene safety of food; In the field of pharmaceutical packaging, three-layer co extrusion blown film machines can produce packaging films with good air tightness and moisture resistance, protecting the active ingredients of drugs from damage.

What issues should be noted when using a three-layer co extrusion blown film machine?

Temperature control: The temperature control of the blown film machine is very important, and different plastic materials have different temperature requirements. During the operation, it is necessary to monitor and adjust the temperature of each section in real time to ensure better blown film effect.

Extrusion speed: The extrusion speed directly affects the thickness and uniformity of the blown film, and too high or too low a speed can lead to unstable blown film quality. The operator needs to set the appropriate extrusion speed according to the plastic material and product requirements used.

Pressure control: The blown film machine needs to maintain a certain pressure during the production process, and too high or too low pressure can affect the quality of blown film. By adjusting the opening size of the extrusion head, the pressure of the blown film machine can be adjusted.

Checking the quality of raw materials: Using high-quality raw materials is the key to ensuring the quality of blown film. Before using a blown film machine for production, it is necessary to inspect and screen the raw materials to ensure stable quality.

Cleaning and maintenance: Regularly clean all components of the blown film machine, remove impurities and residues, and maintain the equipment in good condition. At the same time, regularly check the wear and tear of each component and replace damaged parts in a timely manner.

Safe operation: Operators must follow the operating procedures and wear relevant safety protective equipment when using the blown film machine to ensure personal safety. In case of abnormal situations, it is necessary to stop the machine for inspection in a timely manner to avoid equipment failure or safety accidents.

The working principle of the three-layer co extrusion blown film machine is to add different types of plastic particles to the three independent extrusion mechanisms of the machine. After heating, melting, and mixing evenly, three different colors or functions of plastic films are extruded simultaneously through the extrusion head to form a three-layer film product. A three-layer film usually consists of an outer layer, a middle layer, and an inner layer, each of which can be made of different types of plastic materials to fully utilize the performance and functionality of the film.

The three-layer co extrusion blown film machine has many advantages. Firstly, it has high production efficiency. One device can simultaneously produce three different colors of films, greatly improving production efficiency. Secondly, it is energy-saving and environmentally friendly, adopting advanced heating and cooling systems, greatly reducing energy consumption and lowering production costs. In addition, the films produced by the three-layer co extrusion blown film machine have good physical and chemical properties, which can meet the needs of different fields.