Things You Should Know About Protective Film

Nov. 25, 2022

The basics of what you need to know about protective films.


Even if you haven't used protective films in your application before, you're probably familiar with their presence on many of the products you buy every day. By now, you probably find protective films on every new mobile phone, tablet, TV, computer monitor, major appliance, or some building material you buy. Chances are that your customers expect to find this amazing protective film on your products too.


In their simplest form, temporary surface protection films are plastics coated with a certain thickness of specialized pressure-sensitive adhesive (PSA). A key word when describing protective film adhesives is "temporary". By design, temporary surface protection films are not intended to remain on the surface indefinitely. We have all experienced the annoyance of trying to remove a so-called temporary price tag from a new gadget, only to have the tag torn into strips and/or left behind a sticky residue. This is very undesirable for protective films.

Protective Films

Protective Films

The most common types of plastic used in protective films are


LDPE (Low-Density Polyethylene).

Co-Ex (co-extruded low-density polyethylene)

PET (polyethylene terephthalate)

PP (Polypropylene, BOPP, CPP).


Film thickness is often described as the combined thickness of the plastic and the adhesive. The film is usually measured in microns or millimeters. The thicker the film, the more protection it offers against scuffs, scratches, etc. Thicker films tend to be tougher and more difficult to apply to contoured surfaces.


The type of adhesive is also an important consideration. Textured surfaces usually require a thicker, softer adhesive. If the adhesive is only touching the 'peaks' of the surface, it may touch less than 5% of the total surface area and tend to come off the surface. Adhesives used for textured surfaces also tend to have higher tack values.

 Protective Film

 Protective Film    

Tackiness, or adhesive tackiness, is measured in grams or Newtons per 25 mm. For best performance, it is best to use the lowest tack value that gives sufficient adhesion to keep the film on the surface for its lifetime. Using a higher tack value than necessary increases the risk of the film being difficult to remove or leaving adhesive residues. For example, protective films used to protect mobile phone LCD screens have a tackiness of approximately 30g/25mm. whereas films used to protect carpets have a tackiness of 700g/25mm or higher. Using a carpet film on an LCD display may pull the display apart when the film is removed.


Whatever your surface, manufacturing process, or end application, NB Technology can help you find the processing and protective film to meet your needs.


Many solutions are available to maintain the added value of your products.


Please browse our website to see all the possibilities available, and feel free to contact us.


Are you interested in learning more about the best protective film for sale and how they can benefit you? Contact us today to secure an expert consultation!

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