What is plastic film called?
What is plastic film called?
Plastic films are widely used in various industries for packaging and other applications. They offer flexibility, durability, and excellent barrier properties. You may have seen plastic films being used for wrapping food, protecting electronic devices, or even in agricultural applications. But have you ever wondered what plastic film is called? In this article, we will explore the different types of plastic films and their various names.
1. Introduction to Plastic Films
Plastic films are thin sheets of plastic material that are produced through a process called extrusion. The extrusion process involves melting plastic resin and forming it into a continuous sheet, which is then cooled and wound into rolls. These films can be made from different types of plastics, such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), and polyester (PET). Each type of plastic film has its unique properties and applications.
2. Polyethylene (PE) Films
Polyethylene films are one of the most commonly used plastic films. They are flexible, transparent, and have excellent moisture resistance. PE films are often used for packaging food, such as bread, vegetables, and meat, as they provide a protective barrier against moisture and contaminants. These films can be found in grocery stores and are commonly known as cling wrap or plastic wrap.
3. Polypropylene (PP) Films
Polypropylene films are known for their high clarity and stiffness. They have good heat resistance and are often used in packaging applications that require high strength and rigidity. PP films can be found in products like snack food bags, microwaveable food containers, and adhesive tapes. In the packaging industry, PP films are usually referred to as cellophane, which is a general term used to describe thin, transparent films made from cellulose.
4. Polyvinyl Chloride (PVC) Films
Polyvinyl chloride films are known for their versatility and excellent chemical resistance. They can be rigid or flexible, depending on the plasticizer used during the manufacturing process. PVC films have a wide range of applications, including food packaging, medical packaging, electrical insulation, and even decorative purposes. PVC films used for packaging are commonly called shrink wrap or PVC wrap, as they are often used to tightly wrap products for protection and display.
5. Polyester (PET) Films
Polyester films, also known as PET films, are characterized by their high tensile strength and dimensional stability. They have excellent clarity, making them suitable for applications where optical properties are crucial. PET films are commonly used for packaging electronics, such as CDs and DVDs, as well as in the graphic arts industry for printing purposes. In packaging, PET films are often referred to as Mylar, which is a popular brand name for polyester films.
6. Other Names for Plastic Films
Apart from the specific names mentioned above, plastic films are also known by generic terms like flexible packaging films, barrier films, or laminated films. These names are often used when referring to films with specific properties or applications. For example, barrier films are designed to provide an enhanced barrier against moisture, oxygen, or light, while laminated films are made by bonding multiple layers of different materials to achieve specific performance characteristics.
In conclusion, plastic films are essential in various industries, providing protective packaging solutions and fulfilling unique applications. Different types of plastic films, such as PE, PP, PVC, and PET, are commonly known by specific names like cling wrap, cellophane, shrink wrap, and Mylar, respectively. Understanding the terminology associated with plastic films helps in choosing the right film for specific needs and ensures efficient communication within the packaging and manufacturing industries.
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