physically setting
All physically setting adhesives are characterized by their long molecular chains, the polymer structure. The polymer form is already present before bonding and is therefore the typical feature of physically setting adhesives.
Only polymers that can either be liquefied or melted are suitable for physically setting adhesives (thermoplastics).
The long molecular chains are dissolved in solvents, dispersed in water or melted.
Physically setting adhesives achieve their strength through the escape of solvents or dispersing agents or through cooling after previous heating.
In this regard, one speaks of the process of binding.
Distinction:
- Cooling adhesives include hot melt adhesives.
- We count among the adhesives from which the liquid content has to escape during the setting process:
- Dispersion adhesives
- solvent-based wet adhesives
- Contact adhesives.