What are the advantages of a three-layer co extrusion film blowing machine compared to a double-layer co extrusion film blowing machine?

The three-layer co extrusion blown film machine can produce three-layer composite plastic films, and the materials for each layer can be selected according to needs, which can make the films have different properties, such as oxidation resistance, tear resistance, cold resistance, etc. The three-layer co extrusion blown film machine can adjust the proportion of different material layers. By adjusting the operating parameters of the extrusion unit, the extrusion rate and thickness of different materials can be changed, thereby controlling the structure and performance of the film.

The main structural components of a three-layer co extrusion blown film machine include an extrusion unit, a die head, a cooling roller group, a traction roller group, and a winding roller group. The extrusion unit consists of three independent extrusion mechanisms, each of which includes an extruder and a screw. The extruder extrudes plastic materials from the silo through screws and feeds them into the mold head. The mold head is responsible for combining multiple layers of extruded plastic materials into a thin film. There are many structural forms of the mold head, which can be selected according to actual needs. The cooling roller group is responsible for cooling the film to ensure its shape and quality. The traction roller group stretches the film to achieve the required thickness and width by controlling the speed of the roller. The winding roller group is used to roll the film and form a roll shaped finished product, which is convenient for transportation and use.

What are the advantages of a three-layer co extrusion film blowing machine compared to a double-layer co extrusion film blowing machine?

The three-layer co extrusion blown film machine has higher production efficiency. The three-layer co extrusion blown film machine can complete the production of three-layer films at once, while the double-layer co extrusion blown film machine can only complete the production of two-layer films at once. This means that within the same amount of time, the three-layer co extrusion blown film machine can produce more films, thereby increasing production volume.

Secondly, the three-layer co extrusion blown film machine has better film quality. The three-layer co extrusion blown film machine can control the thickness and performance of each layer of film by adjusting parameters such as temperature, extrusion speed, and extrusion pressure of different layers. This can produce a more uniform and stable film, improving the quality of the product.

In addition, the three-layer co extrusion blown film machine can produce a wider variety of films. Due to the three extrusion mechanisms, different raw materials can be selected to produce films with different properties, such as one layer for enhancing mechanical properties, one layer for enhancing moisture resistance, and one layer for enhancing transparency. This can meet the requirements of different industries and products for film performance, providing a more diverse range of product choices.

In addition, the three-layer co extrusion blown film machine can also achieve interlayer composite. In the production process, interlayer composite can be achieved by introducing adhesives between different layers, combining materials with different properties together, thereby making the film more diverse in performance, such as enhancing strength and improving barrier performance.

The three-layer co extrusion blown film machine is a multi-layer extrusion equipment that supplies different plastic materials through three extrusion mechanisms to achieve multi-layer film extrusion. Its working principle is to extrude multiple layers of plastic materials separately and merge them into a continuous thin film through a die. The rotation speed of the three extruders can be adjusted to control the uniformity of the thickness of each layer. The control system can achieve automated control, monitor parameters such as extrusion speed and temperature, and ensure product quality.