Extrusion line for producing cast polypropylene film (CPP film)
Our cast film line features PLC technology from Siemens. The film production line can achieve film forming, corona treatment, edge cutting, and automatic duplex turret winding. With the most advanced plastic film casting process and computer control technology, it can allow for full automation in film roll turning, high-speed winding, meter preset, rapid film cutting, as well as online parameter setting, display, diagnosis, and monitoring.
Technical Data
Maximum Screw Extrusion Output: ≥2200kg/h
Maximum Winding Speed: 250m/min
Maximum Die Width: 5,500mm
Maximum Film Width: 5,200mm
Film Thickness: 20-120μm
Maximum Winding Diameter: 1,000mm
Applicable Material: Cast-grade polypropylene
Power: Customized according to customer needs
Production Volume: Customized according to film thickness
Equipment Dimensions: Customized according to products needed by the customer
Total Installed Power: Customized according to products needed by the customer
Features
Our cast film line mainly consists of an extruder, casting system, thickness gauge, corona treatment machine, edge trim recycler, winder, water cooling station, and electrical control system. Our extrusion line for CPP film offers low energy consumption, stable quality, and high production capacity, providing customers with fully customized services.
The highlights include the followings:
Remote diagnosis for timely emergency response
Centralized control of material handling, conveying, weighing, mixing and feeding
Fully automatic system of film roll unloading, handling, and storage
Production Process of CPP Film Line
Extruder
Die
Cast system
Thickness gauge
Corona treatment
Edge cutting
Winder
Edge trim recycling
Film roll
Film storage
Applications
Composite films for packaging bags, files, albums and food packages.
Aluminum-coated films for barrier packaging and decoration. After vacuum-coated with aluminum, CPP films can be combined with plastic substrates like BOPP and BOPA for packaging tea, fried snacks, and biscuits.
Retort films: CPP films have excellent heat resistance (the softening point of PP is around 140°C), making them suitable for hot-fill packaging, retort pouches, and aseptic packaging. Plus great acid, alkali, and oil resistance, CPP films are preferred materials for bread product packaging and laminating. CPP films are safe for food contact, maintain food flavors, and can be tailored with various resin grades for specific properties.
What are the common processing methods for plastic film?
The common processing methods for plastic film include cast film and blown film.
Between the two processing methods for plastic film, which one is more widely used?
Between the two processing methods for plastic film, which one is more widely used?
According to industry statistics, plastic films produced by cast film lines have higher transparency and thinner thickness, making it more versatile. As a result, cast film equipment has a higher market share.
What are the typical components of a cast film line?
A cast film line generally includes extruder, cast film cooling system, thickness gauge, corona treater, edge trimmer, and rewinder. Some cast film lines may also come with stretching and deep embossing systems.
How many layers of plastic film can the cast film line produce?
Depending on the extruder, the cast film processing equipment can produce single-layer films, three-layer co-extrusion films, five-layer co-extrusion films, seven-layer co-extrusion films, and nine-layer co-extrusion films.
How many methods are there for forming plastic film?
There are three methods for forming plastic film: by extruder, by calendering machine, or by stretching the films obtained from the first two methods. Among all forming methods by extruder, there are three specific methods: extrusion blow molding film, cast extrusion molding fim, and extrusion traction molding film.
What are the factors affecting the quality of cast film?
The quality of cast film is measured in several aspects, with thickness uniformity being the primary concern. Controlling the thickness of cast film is the most critical issue in the production process, and there are many factors that influence it, mainly including:
Extrusion molding temperature
Die lip gap of extruder
Gap between the die lip and cooling roller
Online film thickness measuring
Film cooling and forming
Film winding
