Adhesive force refers to the viscous force between protective film base film and
Adhesion refers to the peel strength after the film is applied.
Cohesion refers to the cohesive force of glue itself.
By knowing the meanings of these forces, we can understand the performance
of protective film better, in order to give full play to different kinds of protective
1, Adhesive force
It refers to the viscous force between glue and thin film. If adhesion is stronger
than adhesive force, when the film is peeled off, the linkages between glue and
thin film will break so residue is caused.
It refers to the force that is required to peel the protective film off the surfaces
after the film has been applied for a while. Adhesion relates to the protected
material, applying pressure, applying time, angles during peeling off and
temperature. Normally with the increase of time and pressure, the adhesion
will also increase. The adhesion of protective film can not increase too much in
order to make sure that no residue is left after removal. Normally the adhesion
is tested by peeling the film at the angel of 180 degree.
If refers to the internal strength of glue. As the glue specified for protective film,
the cohesion must be very high. Otherwise, the internal cracking of glue during
removal of protective film will cause residue. The method to measure the
cohesion: apply the protective film on the stainless steel surface, hang a certain
weight on the protective film, then test how much time it requires for the weight
to pull off the protective film. If adhesion is stronger than cohesion, the linkages
among glue molecules will break while peeling off the film, so residue is caused.
Isaac professional team will help you to find and create the most suitable protective film.
Contact person: Ruby
Whatsapp/Mobile: 86 15106175635