Basic structure and substrate design technology of high temperature protective film

Some high temperature resistant films such as PI film, PEN film and PEEK film, etc., and the common protective film substrate in the market is PET and PE film.

1, its main structure: outer layer: PET release film Middle layer: PET electrostatic ion adsorption raw material Inner layer: PET release film.

2, product features: anti-scratch strengthening, -, through hardening treatment, really useful protection liquid crystal, block reflection, - useful to eliminate glare, visual effect is more clear, electrostatic adsorption, electrostatic ion adsorption, there will be no residual glue, nor damage the screen, good light transmission, -, because the substrate selection of crystal point and transparency is very good, when used is simply no different from the screen effect.

3, the common abnormal phenomena and the causes of the presentation summary: in the process of gluing the protective film, the glue leveling is good, the coating is uniform, the product appearance is delicate and transparent, but it may also cause various ills for other reasons, most of these phenomena are related to the surface tension.

In the tape protective film, the film coated with adhesive is called the "substrate" or "backing".

The substrate plays an important role in achieving the desired function in the tape as well as enhancing its strength, so there are many different kinds and substrate design techniques that play an important role in the overall development of the tape.

In packaging applications, hand tear performance is a priority, when the adhesive should be used with the paper substrate, and in electrical applications, insulation and transparency need to be emphasized, polyester film (PET film) should be used, when high heat resistance is required, such as the use of polyimide in welding shielding, when taking into account wear resistance and smoothness. Polytetrafluoroethylene (PTFE) film should be used, and polyolefin film should be used in surface protective film requiring flexibility as the main performance, while metal foil has electrical conductivity and is suitable for connecting various objects, foam is used for the sealing of mobile phones.

A polyolefin film with an undulating surface is a good example of a substrate that is not only strong, but also hand-torn, suitable for construction applications.

A manufacturer of surface PET protective film for deep drawing of items such as sinks is an example of substrate design, which gives full play to the characteristics of the substrate.

Cutting strips for silicon wafers are an example of substrate design, in which the tensile properties of plastic film are exploited so that after cutting, although the cutting strips used to hold the chip in place during pickup are stretched, they remain within the designed pressure.