Dual-sided adhesive tapes with on-demand adhesion
Assignee3M Innovative Properties Company
InventorsAnne C.F. Gold, Silvia G.B. Guttmann, Audrey A. Sherman, Jonah Shaver, Thomas R. Corrigan
Life of this patent
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Abstract
Adhesion on demand articles include a layer of adhesive and a backing layer in contact with the adhesive layer. The backing layer includes a plurality of cuts, where the plurality of cuts are gaps but the gaps are not visible to the naked eye when the adhesive article is in an unstressed state, but in a stressed state, at least some of the cuts become gaps that permit adhesion of the first major surface of the adhesive layer to a substrate surface.
Claims21
An adhesive article comprising:
- a layer of adhesive with a first major surface and a second major surface;
- and
- a first backing layer with a first major surface and a second major surface, wherein the first major surface of the first backing layer is in contact with the second major surface of the adhesive layer, and wherein the first backing layer comprises a plurality of cuts, wherein the plurality of cuts are gaps but the gaps are not visible to the naked eye when the adhesive article is in an unstressed state, but in a stressed state, at least some of the cuts become gaps that permit adhesion of the second major surface of the adhesive layer to a substrate surface.
An adhesive construction comprising:
- a first substrate surface;
- and
- an adhesive article attached to the first substrate surface, wherein the adhesive article comprises:
- a layer of adhesive with a first major surface and a second major surface;
- and
- a first backing layer with a first major surface and the second major surface,
- wherein the first major surface of the first backing layer is in contact with the second major surface of the adhesive layer, and wherein the first backing layer comprises a plurality of cuts, and wherein the cuts are gaps, but at least some of the gaps are not visible to the naked eye when the adhesive article is in a first state, and at least some of the gaps that are not visible to the naked eye in the first state become gaps when the adhesive article is in a second state,
- wherein the second state is a state of higher stress of bending, stretching or a combination thereof, wherein the first major surface of adhesive layer is in contact with the first substrate surface;
- and
- wherein the gaps in the first backing layer permit adhesion of the second major surface of the adhesive layer to the surface of a second substrate.
A method of preparing an adhesive article comprising:
- providing a first backing layer with a first major surface and a second major surface;
- modifying the first backing layer by cutting a plurality of cuts into the first backing layer without substantially removing material from the first backing layer, such that in an unstressed state the cuts are gaps, but the gaps are not visible to the naked eye but in a stressed state at least some of the gaps become visible to the naked eye;
- providing an adhesive;
- and
- forming a layer of adhesive on the first major surface of the first backing layer such that the adhesive layer has a first major surface and a second major surface and the second major surface of the adhesive layer is in contact with first major surface of the first backing layer.
Dependencies are inferred from the claim text.