Stretch-Release Adhesive Articles with a Pattern of Slits
Stretch-release adhesive articles with tunable mechanical properties are provided. The articles include a stretchable carrier extending along a first direction and including a first major surface and a second major surface opposite the first major surface. At least one of the first and second major surfaces of the stretchable carrier is a stretch-releasable adhesive surface, and the stretchable carrier includes a pattern of slits distributed thereon and configured to deform upon a stretch on the stretchable carrier to elongate the stretchable carrier.
1 . A stretch-releasable adhesive article comprising:
a stretchable carrier extending along a first direction and including a first major surface and a second major surface opposite the first major surface,
wherein at least one of the first and second major surfaces of the stretchable carrier is a stretch-releasable adhesive surface, and
wherein the stretchable carrier includes a pattern of slits distributed thereon and configured to deform upon a stretch on the stretchable carrier to elongate the stretchable carrier.
2 . The stretch-releasable adhesive article of claim 1 , further comprising a tab disposed at one end of the stretchable carrier to facilitate a stretch release.
3 . The stretch-releasable adhesive article of claim 2 , wherein the tab includes an extension of the stretchable carrier.
4 . The stretch-releasable adhesive article of claim 1 , wherein the stretchable carrier includes a polymeric foam, a polymeric film, or a combination thereof.
5 . The stretch-releasable adhesive article of claim 1 , wherein the stretchable carrier has a lengthwise elongation at break of from about 50% to about 1200%.
6 . The stretch-releasable adhesive article of claim 1 , wherein the stretch-releasable adhesive surface includes a first stretch-releasable adhesive layer disposed on at least a portion of the first major surface of the stretchable carrier and a second stretch-releasable adhesive layer disposed on at least a portion of the second major surface.
7 . The stretch-releasable adhesive article of claim 1 , wherein the pattern of slits includes an array of slits each extending along a direction substantially perpendicular to the first direction.
8 . The stretch-releasable adhesive article of claim 7 , wherein the slits each deforms to an opening on the stretchable carrier upon the stretch.
9 . The stretch-releasable adhesive article of claim 7 , wherein the slits each includes a pair of holes at opposite ends of the respective slits.
10 . The stretch-releasable adhesive article of claim 1 , wherein the pattern of slits includes an array of slits each extending along a direction substantially parallel to the first direction.
11 . The stretch-releasable adhesive article of claim 1 , wherein the pattern of slits includes a plurality of slit unit cells in a periodic arrangement.
12 . The stretch-releasable adhesive article of claim 1 , wherein the pattern of slits includes one or more through slits each extending through the stretchable carrier in a thickness direction.
13 . The stretch-releasable adhesive article of claim 1 , wherein the pattern of slits includes one or more slits each extending partially into the stretchable carrier in a thickness direction.
14 . The stretch-releasable adhesive article of claim 1 , wherein the pattern of slits includes one or more slits each extending partially into the stretchable carrier from the first major surface and a second set of slits each extending partially into the stretchable carrier from the second major surface.
15 . The stretch-releasable adhesive article of claim 1 , wherein the pattern of slits includes a hierarchical structure.
16 . A method of making a stretch-releasable adhesive tape comprising:
providing a stretchable carrier, the stretchable carrier extending along a first direction and including a first major surface and a second major surface opposite to the first major surface, at least one of the first and second major surfaces of the stretchable carrier being a stretch-releasable adhesive surface; and
providing a pattern of slits distributed on the stretchable carrier, the slits each configured to deform upon a stretch on the stretchable carrier to elongate the stretchable carrier.
17 . The method of claim 16 , further comprising providing a tab disposed at one end of the stretchable carrier to facilitate a stretch release of the stretch-releasable adhesive article from a substrate surface.
18 . The method of claim 17 , wherein the tab includes an extension of the stretchable carrier.
19 . The method of claim 16 , wherein the stretchable carrier includes a polymeric foam, a polymeric film, or a combination thereof.
20 . The method of claim 16 , wherein the pattern of slits includes an array of slits each extending along a direction substantially perpendicular to the first direction.
21 - 26 . (canceled)