The three-layer co extrusion blown film machine is an efficient, stable, and reliable plastic film production equipment. Its working principle, structural characteristics, and application fields have made it an indispensable and important equipment in the packaging industry. With the continuous progress of technology, we believe that the technology of the three-layer co extrusion blown film machine will also be constantly updated, bringing more development opportunities to the packaging industry.

The three-layer co extrusion blown film machine is widely used in the packaging industry. It can produce various types of packaging films, such as food packaging films, pharmaceutical packaging films, daily chemical packaging films, etc. Due to the ability of three-layer co extrusion technology to organically combine the properties of different materials, the produced packaging film not only has good tensile strength and wear resistance, but also has certain barrier performance and transparency. These characteristics enable the packaging film produced by the three-layer co extrusion blown film machine to effectively protect the quality and appearance of the packaging material, and extend its service life.

What are the common specifications and models of three-layer co extrusion blown film machines?

SJ-45/55/45 three-layer co extrusion blown film machine: This is a small-sized three-layer co extrusion blown film machine suitable for producing plastic films with smaller widths, such as agricultural films. This model of machine has the characteristics of simple operation, compact structure, and low energy consumption.

SJ-50/60/50 three-layer co extrusion blown film machine: This is a medium-sized three-layer co extrusion blown film machine suitable for producing plastic films of medium width, such as packaging films, cling films, etc. This model of machine has the characteristics of high output, good stability, and high degree of automation.

SJ-55/65/55 three-layer co extrusion blown film machine: This is a large-sized three-layer co extrusion blown film machine suitable for producing plastic films with larger widths, such as building films, ground films, etc. This model of machine has the characteristics of high output, fast speed, and good durability.

SJ-60/70/60 three-layer co extrusion blown film machine: This is a large three-layer co extrusion blown film machine suitable for producing plastic films with larger widths and thicker films, such as plastic films and agricultural covering films. This model of machine has the characteristics of high strength, high stability, and high production efficiency.

The working principle of the three-layer co extrusion blown film machine is to heat and melt different resins through their respective extruders, and then feed the molten resin into the co extrusion machine head through the screws extruded separately. At the co extrusion head, three different resins will melt and mix together to form a three-layer thin film structure. Cool and stretch the extruded molten resin through the die head to form a flat film.

The three-layer co extrusion blown film machine is also widely used in agriculture and construction industries. In the field of agriculture, it can produce agricultural films, such as agricultural films, protective films, etc. These membrane materials have characteristics such as waterproofing, insulation, and UV resistance, and can be used for plastic film covering, seedling protection, greenhouse construction, etc. In the field of construction, three-layer co extrusion blow molding machines can produce building films, such as waterproof films, thermal insulation films, etc. These membrane materials have good waterproof and thermal insulation properties and can be used for the protection of building roofs, basements, foundations, and other parts.