Seven layer co extrusion film blowing technology
In order to meet the needs of some special functions of plastic film packaging materials in the production process, the multi-layer composite film blowing machine developed by blowing and co extruding various characteristic materials (such as air permeability, waterproof, heat preservation, toughness, etc.) together to form a multi-functional plastic film. The purpose of multi-layer co extrusion film blowing machine is to give full play to the advantages of multiple materials and avoid some disadvantages of single material or single-layer film blowing machine. For example, PP, PE coextrusion blowing machine, it is the use of PP material hardness and PE material high brightness characteristics of the combination of two characteristics of the film.
Seven layer co extrusion film blowing unit is mainly suitable for HDPE, mhdpe, LDPE, LLDPE, mLLDPE, PA, EVOH and other resins with gas barrier properties. The films produced are mainly used for packaging materials such as heavy packaging, high-grade food bags, vacuum packaging bags, liquid packaging bags, etc., so as to achieve the purpose of preserving fragrance, keeping fresh, antiseptic, airtight and extending the shelf life. The film has high transparency, puncture resistance, high toughness, good low temperature hot cutting, good composite fastness and anti curling property. Compared with the similar equipment, it has the advantages of higher output, good plasticization, low energy consumption and simple operation. It solves the problems of film lotus leaf edge and winding size head thoroughly, and makes the product quality reach a new level. This kind of film can be widely used in light and light packaging due to its good barrier, fresh-keeping, anti humidity, frost resistance, oxygen isolation and oil resistance. Such as all kinds of fresh fruit, meat food, pickles, fresh milk, liquid drinks, medical supplies and so on.