readhesive

Readhesive refers to the property of a substance to regain its adhesive capabilities after an initial bonding or application. This phenomenon is particularly relevant in the context of certain types of adhesives, such as pressure-sensitive adhesives (PSAs), which can be repeatedly attached and detached from surfaces without significant loss of tack.

The ability to be readhesive is often dependent on the chemical composition and physical structure of the adhesive material. For instance, polymers with specific viscoelastic properties can deform under pressure to create intimate contact with a surface, forming a bond. When the force is removed, these polymers can recover their original shape, allowing the adhesive to be repositioned or reapplied. This reversibility is key to readhesive properties.

Readhesive materials find applications in various fields. Examples include reusable tapes, labels designed for frequent repositioning, temporary mounting solutions, and certain types of medical dressings. The ability to adhere and then release without leaving residue or damaging the substrate is a significant advantage in these uses. Factors influencing readhesion include surface energy of the substrate, temperature, and the presence of contaminants.