Polyester Films - An Overview

Posted by andrewpaul on July 1st, 2021

Polyester films are fabricated through the process of heating and stretching. The heat-rolling and stretching processes are carried out in various roll-to-roll methods to yield different materials. It is mostly used as an advertising media and protective covering in the print industry. This material is mainly used as an underlayer in paper, fabric and photographic media. The most common polyester films are the Bo PET (Polyethylene Terephthalate) films.

The film is capable of withstanding pressure up to 300 times that of the applied force and can be applied on a variety of substrates including metals. It has excellent physical and chemical properties that make it ideal for use in a wide range of industries. There are numerous advantages of using polyester films including high tensile strength, excellent chemical and physical properties, visual clarity, durability, good odor and stickiness, low odor and sticky surface, non-corrosive, safe for electrical and physical usage, reusable, and cost-effective. The face shields manufactured using these films includes UV protectors, abrasion protectors, grease protectors, adhesive protectors, thermoset resistors, heat shrinks, etc.

Polyester packaging films can be used for food packaging, water bottles, medicine packaging, cosmetic packaging and baby food packaging. These films offer a number of advantages over conventional packaging materials that include superior physical and chemical properties that make them ideal for use in a wide range of industries. Some of the key advantages of polyester films include:

A major benefit of using polyester films is that they offer superior protection against ultraviolet light and other harmful radiations. UV protective coatings on the surface of the film to reduce internal exposure to ultraviolet radiation and heat. Moreover, these film can be easily cleaned using mild soap and water. Also, it is easy to spot clean the face shields by simply wiping it with a dry and clean cloth or paper towel. If needed, one can spray a small amount of cleaning solution on the surface to remove any residue.

Another major advantage of using polyester films in food packaging is that they do not change color, yellowing as often as paperboard or PET bottles. Even after long exposure to the air, this film does not become discolored or crack. Moreover, because of the flexibility of the film, it is possible to replace broken parts or add new ones without having to repair or replace the entire film. This feature makes it easier and less expensive to replace broken components of the product. Further, if you want to add a label to your product, you need not have to worry about the paper board or PET bottles becoming moldy.

Polyester films are generally available in two main varieties-non-biaxically oriented polyester films and biaxially oriented polyester films. Non-biaxily oriented films are generally preferred for food and cosmetic industry applications. They are available in various thicknesses to suit varying manufacturing requirements. Biaxially oriented polyester films on the other hand, are manufactured for industrial and automotive applications. These are available in various thicknesses and dimensions to meet varied production requirements. Needless to say, both varieties offer great advantages to the manufacturers and to the end users.