CPP CPE multi-layer film extrusion line

GWELL as China Plastic Extruder manufacturer, CPP CPE film extrusion line adopts single-machine or multi-machine co-extrusion method to produce single-layer or multi-layer co-extrusion cast film, and multiplier can also be used to realize the production of up to 72 layers of cast film, fully imported metering pump, digital and precise control Material percentage, to achieve precise input of special materials and reduce costs.

CPP CPE multi-layer film extrusion line Process Flows

Extruder —- Screen changer —– Melt pump —– T-die —— Calender —– Thickness Scanner —-Cooling Bracket —-Cutting Knife —- Haul-off —-Winder

CPP CPE film extrusion line ,CPP film, cast polypropylene film cast polypropylene, also known as unstretched polypropylene film, can be divided into general CPP (General CPP, referred to as GCPP) film, aluminized CPP (Metalize CPP, referred to as MCPP) film, and Cooking grade CPP (Retort CPP, RCPP for short) film.

GWELL CPP CPE film extrusion line is a combination of casting equipment and MDO longitudinal drawing equipment, which can produce cast film and breathable film. Adding about 50% of Caco3, the breathable film has a unique microporous structure after being stretched by MDO. These high-density microporous structures distributed on the surface of the film can allow liquid or water vapor molecules to pass through while blocking the leakage of liquid, so it is named “breathable film”.

CPE film is mainly made of oxidized polyethylene. The product has the characteristics of lightweight, high transparency, strong mechanical adaptability, and moisture resistance. It is widely used in the field of packaging.

Compared with CPP, CPE film is very soft, smooth, has good toughness, and freezing resistance.

The distinctive feature of the breathable film is not only “breathable”, but also has the same feel as textiles. Ideal for diapers and sanitary napkin backsheets. It can produce breathable films of PE and PP materials, which are suitable for sanitary products, medical treatment, and waterproof building materials. We also provide a complete set of processes from raw material synthesis, film making, printing, compounding, and turnkey services.

 Characteristics of CPP CPE film

1. It can be adapted to produce breathable films with high and low air permeability, with uniform air permeability and excellent performance.
2. It can be connected to online multi-color printing and online compounding to achieve efficient production.
3. GWELL as China Plastic Extruder Supplier, The production line has the design features of high speed and low energy consumption, and the production speed is 300m/min. The production line is fully automatic.
4. Unique online slitting, no tape roll up, save more cost for you.

Features of CPP CPE film extrusion line

1. GWELL as China Plastic Extruder Supplier, the screw of CPP CPE film extrusion line is designed with special mixing function and high plasticizing capacity, and cooperates with European-style static mixer, which has good plasticizing, good mixing effect and high output.
2. The automatic adjustment of the die head and the automatic thickness gauge with APC control can be selected to automatically detect the film thickness online and adjust the die head automatically.
3. The cooling forming roller imported from Europe can be selected, and the special spiral flow channel design can make the film cool and shape well at high speed.
4. CPP CPE film extrusion line is equipped with positive pressure device and negative pressure device, and the film melting film is stable.
5. The film edge material is directly recycled online, which greatly reduces the production cost.
6. Efficient CPP CPE film extrusion line is fully automatic center coiling, equipped with imported tension controller, automatic coil changing and cutting, easy to operate.

There are the following differences in the production process

• The production temperature is different. During CPE production, the temperature in the feed section of the extruder is not higher than 180 ℃, and the die temperature is not higher than 225 ℃;
• The casting roller temperature is different, which can be consistent with the process temperature of the CPP casting film. At the same time, the casting roller can also be set at 50 ℃ ~ 60 ℃;
• Due to different tension control, CPE film requires higher tension control accuracy.
• The deployment methods are different. Because the CPE film is very soft, it is required to be deployed before each active traction, and the deployment method is soft;
• Due to different winding methods, clearance contact winding mode is best adopted for CPE film to avoid discount and stretching.