Conformable, stretch releaseable adhesive articles
The present disclosure generally relates to conformable stretch release adhesive and/or stretch-releasable, 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.
1. A stretch releasable adhesive article, comprising:
a multilayer carrier including a first major surface and a second major surface, the multilayer carrier including two or more polymeric film layers and a core layer comprising a pressure sensitive adhesive disposed between at least two of the two or more polymeric film layers, and wherein the adhesive article has a compression stress relaxation between about 30% and about 100% after 10 seconds as measured by texture analysis; and
a stretch releasable adhesive directly adjacent to at least a portion of the first major surface of the multilayer carrier,
wherein the pressure sensitive adhesive includes a (meth)acrylic polymer.
2. The stretch releasable 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.
3. The stretch releasable adhesive article of claim 1 , wherein the pressure sensitive adhesive includes a crosslinked or crosslinkable (meth)acrylic polymer.
4. The stretch releasable adhesive article of claim 1 , wherein the core layer further includes tackifiers, plasticizers, crosslinker, or rheology modifiers.
5. The stretch releasable adhesive article of claim 1 , wherein the polymeric film includes at least one of a vinylaromatic copolymer, a linear low density polyethylene, a low density polyethylene, a high density polyethylene, a copolymer of ethylene and (meth)acrylate monomers, a copolymer of ethylene and (meth)acrylate monomers containing acid modifications, a copolymer of ethylene and vinyl acetate, a copolymer of ethylene and vinyl acetate containing acrylate, polymers from olefin monomers with between 2 and 16 carbons, a copolymer of two or more olefin monomers, polymers from olefin monomers with atactic, syndiotactic, or isotactic stereochemistry, a copolymer of one or more olefin monomers polymerized using a metallocene catalyst, vinyl copolymers, and combinations thereof.
6. The stretch releasable adhesive article of claim 1 , wherein the multilayer carrier has a thickness of between about 0.4 mils and about 60 mils.
7. The stretch releasable adhesive article of claim 1 , wherein the stretch releasable adhesive directly adjacent to at least a portion of the first major surface of the multilayer carrier is a first stretch releasable adhesive, and further comprising:
a second stretch releasable adhesive directly adjacent to at least a portion of the second major surface of the multilayer carrier.
8. The stretch releasable adhesive article of claim 1 , wherein the stretch releasable adhesive article has an area of adhesive contact with the substrate of between about 15% and about 100%.
9. The stretch releasable adhesive article of claim 1 , wherein the adhesive article exhibits stretch debonding of between about 20 and about 170 oz/0.625 inch.
10. The stretch releasable adhesive article of claim 1 , wherein at least one of the adhesive article and/or the multilayer carrier has a tensile strength at break sufficiently high so that the multilayer carrier will not rupture prior to being stretched and removed from an adherend at an angle of 35° or less.
11. The stretch releasable adhesive article of claim 1 , wherein the stretch releasable adhesive has a glass transition temperature of about −125° C. to 15° C., as determined by dynamic mechanical analysis of the tan δ peak value.
12. The stretch releasable adhesive article of claim 1 , wherein the stretch releasable adhesive has a storage modulus of about 400,000 Pa or less at 25° C., as determined by dynamic mechanical analysis.
13. The stretch releasable adhesive article of claim 1 , wherein at least one of the adhesive article or the multilayer carrier has a light transmission of at least about 75% and a haze of no greater than 40%.
14. The stretch releasable adhesive article of claim 1 , having a shear strength of greater than 100,000 minutes as measured according to ASTM D3654-82.
15. The stretch releasable adhesive article of claim 1 , wherein the stretch releasable adhesive article has an area of adhesive contact with the substrate of between about 40% and about 90%.
16. A method of using a stretch releasable adhesive article, comprising:
contacting the stretch releasable adhesive article of claim 1 with an adherend surface.