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Illustration: the advantages of multi-layer co-extruded

Illustration: the advantages of multi-layer co-extruded

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In order to meet the customer’s special requirement on production process, co-extrude multi-functional plastic film with various materials (such as breathable, waterproof, insulation, toughness, etc.) and after years of research and practice development, our company Develop multi-layer co-extruded blown film machine. Its purpose is to play the advantages of a variety of materials and avoid some of the shortcomings of a single material or mono-layer blown film machines. Aoxiang’s principle is to provide customers with market competitiveness film blowing machine.
In multiple layers, such as PP, PE co-extrusion film blowing machine, it uses the good advantage of combination of two characteristics of high hardness characteristics of PP material and brightness features of PE material, to produce a film. Multi-layer co-extruded blown film machine can be divided into few types, such as two-layers co-extruded blown film machine, three-layers co-extruded blown film machine, five-layers co-extruded blown film machine,seven-layers co-extruded blown film machine and others.
Three layers co-extrusion blown film production line adopts the new type of high efficiency and low energy consumption extrusion line with the IBC film cooling system inside the bubble, + 360 degree for traction on the horizontal rotating system and photoelectric automatic correction device, fully-automatic winding and film tension control, advanced technology such as computer screen automatic control system. Compared with the similar equipment, it has the advantages of higher output, better plasticizing and lower consumption as well we easier operation, completely solving winding size issue, and makes the product quality up to a new step. The characters of our film are with high transparency, durability, high toughness and the best low temperature hot cutting and composite fastness as well as crimp resistant. As its good barrier property, keeping fresh, well protected against dampness, frost proof, oxygen insulation, oil resistant, the film can be widely used for light and heavy packaging, such as all kinds of fresh fruit, meat, pickles, fresh milk, liquid beverage, medical supplies and etc.

Five co-extruded blown film unit, mainly for HDPE, LDPE, LLDPE, EVA and other gas barrier function material, is generally used for heavy-packaging, high-grade food bags, vacuum bags, liquid packaging bags and other packaging film , to reach preservation, airtight, to extend shelf life packaged purpose Aoxiang can not develop without your requirements, customers’ satisfaction is the greatest hornor of Aoxiang

Structure diagram of film blowing machine

Structure diagram of film blowing machine

QQ截图20160125162833
Extruder – Granules plasticization
Screw & barrel – Film Extrusion
Die head- Film inflation
Cooling unit, bubble frame, word board, pull rolls – film forming and traction
Winding unit – Film winding
Film blowing machine suitable materials: high pressure polyethylene (LDPE) low-pressure polyethylene (HDPE) linear polyethylene (LLDPE)

Illustration: three structures of film blowing machine

Illustration: three structures of film blowing machine

11-1900x420

Film blowing machine products suit for high-grade packaging film, which is with good barrier properties, preservation, moisture, frost, oxygen barrier, oil barrier, can be used in light and heavy packaging process, such as fresh fruit, meat, pickles, fresh milk, liquid drinks, medical & other Packages.

Film blowing machine production theory:
Blowing machine is a plastic machinery, main working principle: put the dried polyethylene material to the hopper, by weight of the material and it falls from the hopper into the screw, oblique facet when the pellets in contact with the threaded oblique edges, rotating plastic generating thrust perpendicular to the plane oblique ridge, the plastic particles onward, the process goes on, because the friction and particle collision friction plastic screw, plastic and barrel time between, but also due to the external heating barrel gradually dissolves. Molten plastic through screw & screen changer to filter impurities, Extruded out from the die head, cooled by the air ring and blown film through the word board, pulling rolls, winder, then the film rolls are finished.

Description of three structures of film Blowing machine :
1. Extruder: Consists of screw, barrel, hopper, gear box and drive motor. And drive motor can be electromagnetic speed motor or Frequency General Motor. Through the motor belt, motor drives gear box and makes the screw do rotation jobs inside of the barrel; Then plastic materials melt with external heating and come out from die head gap.
2. The cooling unit: consists of air ring, pipe, air blower and other components.
3. The electrical control unit: generally production line with operation of the unit is equipped with a cabinet by the general pressing through the main power button, turning on the total motor switch, separating buttons control the heaters of screw, three-way, die head. We use temperature thermocouple on the key parts of heating ring with automatic temperature control function, during the normal production process. Furthermore, the temperature can be automatically controlled to ensure that the production process is stable and reliable.

Enhance competitiveness from production

Enhance competitiveness from production

未标题-12-1900x420

Machine with two sets of extrusion parts and a three-layer co-extrusion die head, wherein the surface layers share an extruder, which we call A layer, the other extruder is for the middle layer, we call it B layer, so the blown out film structure is A, B, A three-layer co-extruded film.

We named this equipment as ABA blown film machine. The application of ABA blowing machine can blow AAA film and ABA film. It can produce finished film as below:

1. composite packaging film

2. protective film

3. courier bags film

4. shrink film

5. agricultural film

6. other packaging films

ABA blowing machine suits with HDNJ material + HDPE material. The A layer using HDPE material as a coating and the middle layer we increase the proportion of HDNJ material. So the finished film surface are bright, beautiful with soft touch, meanwhile the cost of raw materials will be much declined. With ABA film blowing machine, manufacturers can improve the overall economic benefits.