Conformable adhesive articles

Patent metadata

Field	Value
Publication number	US-11472156-B2
Application number	US-201816499115-A
Country	US
Kind code	B2
Filing date	Mar 26, 2018
Priority date	Mar 28, 2017
Publication date	Oct 18, 2022
Grant date	Oct 18, 2022

Abstract

The present disclosure generally relates to conformable adhesive articles that are capable of attaching or adhering to a substrate and that can be removed from the substrate without causing damage to the substrate. The present disclosure also generally relates to methods of making and using such adhesive articles. In some embodiments, the adhesive article includes (1) a releasable layer having a first major surface and a second major surface; the second major surfaces including a pressure sensitive adhesive capable of adhering the adhesive article to a surface; and (2) a compliant layer having a first major surface and a second major surface; the second major surface of the compliant layer adjacent to the first major surface of the releasable layer. In some embodiments, the releasable layer debonds from both the surface and the compliant layer when the adhesive article is stretch released at an angle of less than 35 degrees.

First claim

What is claimed is:

1. An adhesive article, comprising:
a stretch-releasable layer having a first major surface and a second major surface;
the second major surfaces including a first pressure sensitive adhesive capable of adhering the adhesive article to a surface;
a compliant layer having a thickness between 10 mils and 30 mils and consisting of a second pressure sensitive adhesive sandwiched between a first and a second polymeric film;
the compliant layer having a first major surface defined by the first polymeric film and a second major surface defined by the second polymeric film, with the second major surface of the compliant layer adjacent to the first major surface of the releasable layer; and
a hardgood attached to the first major surface of the compliant layer, wherein the releasable layer debonds from both the surface and the compliant layer when the stretch-releasable layer is stretch released at an angle of less than 35 degrees, and wherein the hardgood does not debond from the compliant layer when the stretch-releasable layer is stretch released from the surface at an angle of less than 35 degrees, and wherein the adhesive article removes from an adherend damage-free.

2. The adhesive article of claim 1 , wherein the second pressure sensitive adhesive including a (meth)acrylic polymer.

3. The adhesive article of claim 1 , wherein the stretch-releasable layer has a thickness of between about 10 microns and about 1500 microns.

4. The adhesive article of claim 1 , wherein the stretch-releasable layer is a single layer.

5. The adhesive article of claim 4 , wherein the stretch-releasable layer is the first pressure sensitive adhesive.

6. The adhesive article of claim 1 , wherein the stretch-releasable layer is a multilayer construction.

7. The adhesive article of claim 1 , wherein the stretch-releasable layer includes a stretch releasable portion.

8. The adhesive article of claim 1 , wherein the stretch-releasable layer includes a stretch releasable portion positioned between the first pressure sensitive adhesive layer and a third pressure sensitive adhesive layer.

9. The adhesive article of claim 7 , wherein the stretch releasable portion includes at least one of a single layer of film, a single layer of foam, multiple layers of film, multiple layers of foam, multiple layers of foam and film, and single or multiple layers of adhesive.

10. The adhesive article of claim 1 , wherein the compliant layer is attached to the hardgood via a third pressure sensitive adhesive.

11. The adhesive article of claim 1 , wherein the compliant layer increases the area of adhesive contact to the surface by at least 10% according to the Percent Adhesive Surface Contact Test Method.

12. The adhesive article of claim 1 , wherein the stretch-releasable layer has an elongation at break of greater than 50%.

13. The adhesive article of claim 1 , wherein the first pressure sensitive adhesive comprises at least one of natural rubber, polyisoprene, polybutadiene, polyurethane, styrene-isoprene-styrene, styrene-butadiene-styrene, styrene-ethylene/butylene-styrene, styrene-ethylene/propylene-styrene acrylic copolymer, acrylic block copolymer, silicone elastomeric polymers, and mixtures thereof.

14. The adhesive article of claim 1 , wherein the adhesive article exhibits a shear strength of greater than 10,000 minutes as measured according to ASTM D3654-82.

15. The adhesive article of claim 1 , wherein the adhesive article has a tensile strength at break sufficiently high so that the stretch-releasable layer will not rupture prior to being stretched and removed from an adherend at an angle of 35° or less.

Assignees

• 3M Innovative Properties Co

Inventors

• Lehmann Megan P
• Yarusso David J
• Cowman-Eggert Christina D
• Schmotter Barbara K
• Lipscomb Corinne E

Classifications

• B32B27/306

  comprising vinyl acetate or vinyl alcohol (co)polymers · CPC title

• B32B2405/00

  Adhesive articles, e.g. adhesive tapes · CPC title

• B32B27/08

  of synthetic resin · CPC title

• B32B2270/00

  Resin or rubber layer containing a blend of at least two different polymers · CPC title

• B32B2307/54

  Yield strength; Tensile strength · CPC title