Let's explain in detail the basic material selection methods for PET release films!

Different appearances require different stickiness. Depending on the appearance and pressure, the speed of viscosity increase varies. Generally, the protective film should be peeled off after a certain time to determine whether the viscosity is suitable. The use of rubber and acrylic protective films has different effects. Rubber is relatively soft, while acrylic is relatively hard. Generally, rubber type protective film is considered first, followed by acrylic type protective film.

We recommend at least 80um of protective film for boards that need to be twisted or thick; The thicker the protective film, the higher the viscosity required. During twists and turns, the pressure cannot be concentrated in one direction, otherwise the protective film will be damaged. It is necessary to adjust things based on the thickness of the material. When punching holes, it is important to prevent the use of oil, otherwise residual adhesive may be left.

In addition to stickiness, users also need to test the tensile strength and elongation of the protective film to ensure that its flexibility and strength meet the requirements.

Because each user requires a different appearance and method of using protective film, they need to test the product and try it out before formally using the protective film. The release film manufacturer reminds us to select the most suitable adhesive based on the structure of the surface to be applied and subsequent processing technology. The inspection standard is: within a given time, when the protective film is torn off, no residual adhesive should be left; Workers can easily tear off the protective film.

Residual adhesive treatment: Through strict selection and laboratory testing, the protective film will not have residual adhesive, but if the protective film is applied for too long or too much pressure is applied on the surface of the protective film, residual adhesive will also be left. So choose an organic solvent that will not damage the coating and can effectively dissolve the colloid for cleaning. We do not recommend toluene because it is harmful to health.

Conclusion: Due to users' poor understanding of protective film, they often choose or use the wrong protective film. With strict testing and professional supervision, they can accurately grasp the temperament of the protective film. The surface of the protective film aluminum plastic composite board does not add any troubles, and the medium rough surface is selected with a medium adhesive protective film with a viscosity of 1.2N/cm; Highly viscous protective film is used for a very rough surface, with a viscosity of 1.5N/cm; If laser cutting is required, because the protective film shrinks short due to heat, an extra high viscosity protective film with a viscosity of 1.9N/cm should be selected. The fundamental principle is: 'Appropriate stickiness is sufficient'.

The above is a complete introduction organized by the Reechas. For more relevant information, please keep an eye on the news updates on our website.