PE Film, that is, polyethylene film, refers to a film produced with PE particles. PE film has moisture resistance and low moisture permeability. polyethylene film (PE) can produce products with different properties such as low-density, medium-density, high-density polyethylene and cross-linked polyethylene according to different manufacturing methods and control methods.
As one of the important packaging materials today, PE film plays a great role in both the outer packaging and the inner packaging of commodities. The outer packaging is used for protection and covering; the inner packaging can be used as a carrier covering layer. It is said that PE film is one of the materials that are flexible, light and widely used in various fields. Generally, PE film produced by blow molding method is often more advantageous. The following will take you to understand why PE film produced by blow molding method is more advantageous.
The principle of film blowing is to put the plastic raw material particles into the plastic extruder through the dryer bucket, where they are fused into a melt, and these melts pass through constant temperature and quantitative under pressure. The constant pressure is extruded out of the head, and the melt forms a cylinder at the position of the head, and is introduced into the fixed part of the frame. In this way, a closed membrane embryo body is formed, compressed air enters the interior of the membrane, and the membrane embryo becomes a membrane bubble. The traction roller rolls and transports it to the guide roller and the coiling device, and cuts it into a roll and puts it into the warehouse to become a PE film.
It is responsible for melting and plasticizing the plastic pellets and resin, and then extruding them. Product problems such as poor plasticization can be roughly traced back to problems with the extruder; the inside of the head is a spiral, which is responsible for the cross-mixing of plastics, which directly affects the film. The tensile force, strength and other indicators of the finished product; the die head is to control the inflation ratio of the film, which has a direct impact on the strength and stability of the film; the cooling air ring device is responsible for cooling the film bubble, which has a great direct impact on the strength of the finished PE film. Direct factor affecting stability and gloss.
Blown film technology can well melt blown and co-extrude different types, different functions, different types of plastic raw materials and a variety of characteristic materials (such as breathable, waterproof, heat preservation, toughness, etc.) to form a multifunctional The purpose of plastic PE film is to give full play to the advantages of various materials and avoid some shortcomings of a single material or single-layer blown film machine. It is a mainstream production method that guarantees quality and quantity!
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