What are the testing methods in using release membranes? Let's take a look at the difference between ordinary plastic film and release film. Cut a section of adhesive tape, stick it to these films respectively, and then peel it off. It is easy to peel off the film. In the process of peeling off, there is no noise. It is the release film coated with silicon, but it is difficult to peel off. In the process of peeling off, it is the ordinary plastic film without silicon that makes a chirping sound.

　　This method can also be used to distinguish whether it is a single silicon release film coated with silicon on one side or a double silicon release film coated with silicon on both sides. It can even compare the amount of silicon coated on which side and the peeling rate.

　　To detect with a water pen, if you scratch on the film surface, no ink can be scratched on the release film surface, while ordinary films will have ink marks of different depths. The plastic release paper and coated paper of the same specification can not be seen from the appearance, but the above methods can also distinguish the difference between them. The appearance of glossy ordinary paper and coated paper is sometimes very similar, but if you tear them apart by hand, ordinary paper only has fiber hairs at the tear edge, and coated paper also has some small films in addition to wooden fibers.

　　If the adhesive tape is used for testing, the coated paper will make a noise during the process of removing the adhesive tape, but nothing will be stuck on the adhesive tape, while the glossy ordinary paper will stick the coating and wood fiber on the paper surface.

　　Due to the existence of paper wool and fiber on the paper surface, there is a risk of penetration when silicone oil is coated. In order to ensure a stable peeling force, plastic coating treatment (commonly known as coating) is generally carried out before coating.

　　Special reminder: When selecting release paper, the die cutting manufacturer should remember to ask the supplier in advance whether the release paper is made of kraft paper or straw pulp paper. Kraft paper is not easy to break edges and has less paper scraps during die cutting.