For the owners of the works, they hope that the works framed by the framers are both beautiful and protective, especially the precious works. They also hope to protect their works in the most suitable way.

The structure of a common framed work generally includes picture frame, acrylic, cardboard, work, back card and back plate. However, some framers will omit the back card and face card and paste the work on the KT board, making the work a one-time viewing object.

In the protection level mounting, the framer will usually pad a layer of PET polyester film between the acid free backing cardboard and the back plate as the isolation layer. This approach provides a barrier between art and the environment.

PET film, also known as pet Mylar, is a kind of packaging film with comprehensive performance. It has good mechanical properties, tensile strength and impact strength are 3-5 times that of other films, and good folding resistance.

It has the advantages of good air tightness and fragrance retention, strong insulation performance and chemical corrosion resistance. As a mounting isolation layer, it can prevent the acid of the back plate from migrating to the cardboard and works.

At the same time, it has low gas and water vapor permeability, moisture-proof, mold proof, heat-resistant, cold resistant, moisture-resistant and water-resistant, which helps prevent moisture and other pollutants from damaging the works.

In addition to the excellent physical and mechanical properties of ordinary films, it also has excellent optical properties, such as good transparency, low haze, high gloss, and can block ultraviolet rays.

Moreover, it is puncture resistant, friction resistant, stable and straight in size, and high in tear resistance. Besides mounting, it is also suitable for secondary processing such as printing and paper bags, as well as advertising film base, digital inkjet, magnetic card, label, film switch support and other industries. It is non-toxic, tasteless and has good health and safety. It can also be directly used for food packaging.

Therefore, if an artist brings a piece of work and wants to do protective mounting, in addition to using protective mounting materials, the mounting artist has better add PET polyester film as the isolation layer.