Patent ID: 7976665
Filing Date: 2011-07-12
Classification: C08G,C08L,C09J,Y10T

Abstract:
1. A method comprising: providing a multilayer thermo-reversible dry adhesive comprising a first layer comprising a dry adhesive and a second layer comprising a shape memory polymer; forming a non-adhesive portion on the first layer; providing a substrate; positioning the first layer over the substrate with the non-adhesive portion facing the substrate but not adhering to the substrate; heating the multilayer thermo-reversible adhesive to a temperature higher than the glass transition temperature of the shape memory polymer; imposing a load on the multilayer thermo-reversible dry adhesive while cooling to a temperature below the glass transition temperature of the shape memory polymer, so that a strong adhesive bond is formed between the substrate and a portion of the multilayer thermo-reversible adhesive not including the non-adhesive portion; and releasing the multilayer thermo-reversible dry adhesive from the substrate by heating the multilayer thermo-reversible dry adhesive to a temperature above the glass transition temperature of the shape memory polymer, wherein the residue adhesion is approximately zero.