What are the most common plastic films
DATE：2023/8/30 10:42:14 / READ： / SOURCE：This station
Plastic film is a type of plastic product widely used in packaging, agriculture, construction, and other fields. It has the characteristics of lightweight, flexibility, transparency, water resistance, acid and alkali resistance, and has good functions such as moisture resistance, dust prevention, preservation, and heat insulation. At present, the mainstream plastic films on the market mainly include polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), etc. The following will provide a detailed introduction to the characteristics and production processes of these plastic films.
The production processes of polyethylene film mainly include extrusion method and blowing method. The extrusion method is to extrude molten polyethylene into a thin film through an extruder, and then cool and solidify the film through a cooling roller or cold air. The blown film method involves blowing molten polyethylene through a blown film machine to create a tubular film, which is then unfolded and cooled and solidified by a cooling roller.
2. Polypropylene (PP) film: Polypropylene film is a plastic film with high transparency, high temperature resistance, and acid and alkali resistance. It has good mechanical and heat sealing properties and is suitable for fields such as food packaging, pharmaceutical packaging, stationery, etc. The production processes of polypropylene film mainly include extrusion and injection molding. The extrusion method is to extrude molten polypropylene into a thin film through an extruder, and then cool and solidify the film through a cooling roller or cold air. Injection molding method involves injecting molten polypropylene into a mold, cooling and solidifying it, and then taking it out to form a thin film.
3. Polyvinyl chloride (PVC) film: PVC film is a plastic film with good transparency, flexibility, and weather resistance. It has excellent chemical corrosion resistance and is suitable for packaging, construction, electronics and other fields. The production processes of PVC film mainly include extrusion method and rolling method. The extrusion method is to extrude molten polyvinyl chloride into a thin film through an extruder, and then cool and solidify the film through a cooling roller or cold air. The rolling method involves rolling molten polyvinyl chloride into a thin film through a rolling machine, and then cooling and curing the film through a cooling roller.
In addition to the mainstream plastic films mentioned above, there are also some special purpose plastic films, such as polyester film, polyimide film, etc. These plastic films have special physical and chemical properties and are suitable for fields such as electronics, optics, and medicine.
In summary, plastic film is a type of plastic product widely used in packaging, agriculture, construction, and other fields. The mainstream plastic films include polyethylene film, polypropylene film, and polyvinyl chloride film. They have different characteristics and application fields. The main processes for producing plastic films include extrusion, blowing, injection molding, and rolling. By selecting appropriate plastic films and production processes, we can meet the needs of different fields and achieve efficient production and application of plastic films.
Author：admin