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US 2018/0222173 A1Published application
Adhesive-backed articles
Assignee3M Innovative Properties Company
InventorsHaruyuki Mikami, Patrick R. Fleming, Mieczyslaw H. Mazurek
Life of this patent
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Abstract
Methods of preparing adhesive-backed articles and methods of applying adhesives backed articles are described. The adhesive-backed articles include a compliant film and a pressure-sensitive adhesive having a microstructured surface opposite the compliant film.
Claims15
An adhesive backed article comprising:
- a compliant film having a thickness in the range of 25 μm to 100 μm, and an inelastic deformation of at least 5% after being stretched once to 115% of its original length;
- a pressure sensitive adhesive layer bonded to a surface of the compliant film, having a thickness in the range of 10 μm to 50 μm;
- a release liner positioned on the surface of the pressure sensitive adhesive layer opposite the compliant film, the release liner having a microstructured release surface that include protrusions for forming a pattern of channels in the pressure-sensitive adhesive layer;
- wherein the channels are arranged at a pitch of about 400 μm or less and wherein the channels define a volume of at least 1×103 μm3 to 1×107 μm3 per a 500 μm diameter circular area of the adhesive backed article;
- wherein after the film is applied to a substrate, the pattern of channels is substantially undetectable on a planar upper surface of the compliant film when viewed with an unaided eye.
2 more elements
An adhesive backed article comprising:
- a compliant film having a thickness in the range of 25 μm to 100 μm, and an inelastic deformation of at least 5% after being stretched once to 115% of its original length;
- a pressure sensitive layer adhesive bonded to a surface of the compliant film, having a thickness in the range of 10 μm to 50 μm;
- a release liner positioned on the surface of the pressure sensitive adhesive opposite the compliant film, the release liner having a microstructured release surface that include protrusions for forming a pattern of channels in the pressure-sensitive adhesive layer;
- wherein the channels are arranged at a pitch of about 400 μm or less and wherein the channels define a volume of at least 1×103 μm3 to 1×107 μm3 per a 500 μm diameter circular area of the adhesive backed article;
- wherein after final application of said adhesive-backed film onto a contoured surface of a motor vehicle, the pattern of said channels is prevented from appearing on the surface of said compliant film.
2 more elements
Dependencies are inferred from the claim text.