Wouldn't it be great if there was a universal adhesive tape that had excellent adhesion, cohesion and initial adhesion?
But in fact this perfect state is impossible to achieve, because the three forces are like the three angles of a triangle, holding each other in check.
Stick on relay
- The attraction between the tape and the object
- Adhesion is usually affected by the adhesive system, the surface of the adhesive, pressure, time and environmental conditions
- Apply pressure to the surface of the adhesive to produce adhesive force
- Usually the bonding will increase in the next few days after bonding
- is the most important indicator of each tape application
Force of cohesion
- Internal strength of glue
- This applies to cohesion correlation when external forces are applied in parallel directions
- High cohesion adhesives usually have better high temperature resistance; Lower initial adhesion, not easy to overflow glue; Higher retention
Initial adhesion force
- Describe the performance of the adhesive in the first contact with the adhesive and the infiltration of the surface
- is embodied under the minimum pressure and minimum contact time
- High initial adhesion is better for the adhesion of rough surfaces
The "finger test" is usually just a measure of initial adhesion. But that's not all there is to tape
According to different application requirements, only the most appropriate magic triangle ratio.
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