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US 9,540,546 B2Granted
Composite reusable adhesive
AssigneeIndian Institute of Technology Kanpur
InventorsAshutosh Sharma, Sandip Patil
Life of this patent
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Abstract
A pressure-sensitive adhesive material including a visco-elastic layer and an elastic layer is provided. In some embodiments, a reusable pressure-sensitive adhesive material exhibiting high adhesive strength after repeated cycles of adhesion and detachment is provided. In some embodiments, methods of making a pressure sensitive adhesive material are provided.
Claims33
A pressure-sensitive adhesive material, the material comprising:
- a visco-elastic layer including a weakly or partially cross-linked first elastomer;
- an elastic layer placed over the visco-elastic layer, the elastic layer including a second elastomer exhibiting a higher degree of cross-linking than first elastomer and a thickness that is less than one quarter of a thickness of the visco-elastic layer;
- and
- an adhesive surface on the elastic layer on a surface thereof opposite the visco-elastic layer, wherein the adhesive surface has an adhesive strength of at least 200 mJ/m2.
1 more element
A method of making a pressure-sensitive adhesive material, the method comprising:
- providing a visco-elastic layer;
- applying an elastic layer over a surface of the visco-elastic layer, where the elastic layer has a thickness that is less than one quarter of a thickness of the visco-elastic layer;
- and
- curing the visco-elastic layer and the elastic layer, thereby making a pressure-sensitive adhesive material;
- wherein the cured elastic layer includes an adhesive surface on a surface thereof opposite the visco-elastic layer, wherein the adhesive surface has an adhesive strength of at least 200 mJ/m2.
2 more elements
A pressure-sensitive adhesive material, the material comprising:
- a visco-elastic layer including a weakly or partially cross-linked first elastomer;
- an elastic layer placed over the visco-elastic layer, the elastic layer including a second elastomer exhibiting a higher degree of cross-linking than first elastomer and a thickness of 100 micrometers or less;
- and
- an adhesive surface on the elastic layer on a surface thereof opposite the visco-elastic layer, wherein the adhesive surface has an adhesive strength of at least 200 mJ/m2.
1 more element
Dependencies are inferred from the claim text.