Classification and advantages of multi-layer co extrusion blown film machine

Classification and advantages of multi-layer co extrusion blown film machine:

With the development of industrialization, the development of blown film machines conforms to the needs of the market, constantly innovating and breaking through in the process of development, in order to achieve the production goals of the market.

In order to meet the special functional needs of plastic film packaging materials in the production process, multiple characteristic materials (such as breathability, waterproofing, insulation, toughness, etc.) are blown and co extruded together to form multifunctional plastic films, and multi-layer co extrusion blown film machines have been developed. The purpose of multi-layer co extrusion blown film machine is to leverage the advantages of multiple materials and avoid some of the disadvantages of single material or single-layer blown film machines.

For example, the co extrusion blown film machine for PP and PE combines the high hardness of PP material with the high brightness of PE material to produce films that combine the two characteristics.
There are several types of multi-layer co extrusion blown film machines, such as three-layer co extrusion blown film machine, five layer co extrusion blown film machine, and seven layer co extrusion blown film machine, which belong to this category of products:
Three layer co extrusion blown film machine
The three-layer co extrusion blown thin production line adopts advanced technologies such as a new high-efficiency and low-energy extrusion unit, IBC film bubble internal cooling system, ± 360 ° horizontal traction rotation system, photoelectric automatic correction device, fully automatic winding and film tension control, and computer screen automatic control system. Compared with similar devices, it has the advantages of higher output, better plasticization of products, low energy consumption, and easy operation, completely solving the problems of film ruffle edges and winding size, and taking product quality to a new level. The produced film has high transparency, puncture resistance, high toughness, excellent low-temperature heat cutting, good composite fastness, and anti curling properties. This type of film, due to its good barrier properties, preservation, moisture resistance, frost resistance, oxygen barrier, and oil resistance, can be widely used for light and heavy packaging. Such as various fresh fruits, meat products, Pickled vegetables, fresh milk, liquid drinks, medical supplies, etc.
Five layer co extrusion blown film machine
The five layer co extrusion blown film unit is mainly suitable for resins with gas barrier properties such as HDPE, MHDPE, LDPE, LLDPE, MLLDPE, PA, EVOH, etc. The produced films are mainly used as packaging materials for heavy packaging, high-end food bags, vacuum packaging bags, liquid packaging bags, etc., achieving packaging purposes of fragrance preservation, freshness preservation, anti-corrosion, airtightness, and extended shelf life.