ADSORPTION and adsorption theory the theory of adsorption holds that the adhesive force mainly results from the molecular interaction with the adhesive system, and there are two stages. 

The first stage is the diffusion of the liquid adhesive molecules to the surface of the substrate by means of the thermal Brownian motion, bring all polar groups or links of the two close to each other. The second stage is the generation of adsorption force, when the distance between the adhesive and the stickies reaches 1-0.9 mm, the two molecules will have adsorption until the distance between them reaches the maximum stable state, the bond strength is related to the polarity of the adhesive, but mainly depends on the density of the adhesive molecules in the contact zone.