The reason why the PE protective film will be residual glue
Jul 19, 2021
No matter how high the surface gloss is, the surface of the object is scattered with many tiny holes that are difficult to see with the naked eye. Although the pressure-sensitive adhesive is cross-linked, it still has a certain degree of deformation and fluidity, especially the part of the polymer that has not participated in the cross-linking.
With the extension of time, the pressure-sensitive adhesive gradually penetrates into the gap, forming an "anchor". In addition, when attaching the pe protective film, although the pressure is high, the contact area between the pressure-sensitive adhesive and the surface of the data is not very large. With the extension of time, the contact area gradually increases, and the effect between the pe protective film and the protected surface Strength has also gradually improved. Both effects will increase the peel strength with time.
