Adhesive-back articles
Assignee3M Innovative Properties Company
InventorsHaruyuki Mikami, Mieczyslaw H. Mazurek, Patrick R. Fleming
Life of this patent
Estimating the term…
Abstract
An adhesive-backed article having a compliant film with a pressure sensitive adhesive bonded to one surface of the film. The pressure sensitive adhesive includes a microstructured surface opposite the compliant film. The microstructured surface defines channels in the adhesive. The channels create pathways for the egress of fluids. Upon application onto a substrate, the channels and structures wet out to render the microstructured surface substantially undetectable when viewed from the exposed surface of the article.
Claims19
An adhesive-backed article, comprising:
- (a) a compliant film having an upper surface and a lower surface;
- and
- (b) a pressure sensitive adhesive bonded to the lower surface of said film, said pressure sensitive adhesive having a microstructured surface, opposite said film, forming channels that define exit pathways, the channels define a volume of at least 1×103 μm3 per any 500 μm diameter circular area of the microstructured surface of said adhesive, each pathway providing a continuous fluid egress to a periphery of said article when said article is applied to a substrate, said adhesive-backed article being sealable as indicated by an initial percent wet out test result of at least 85%, and the channels being substantially undetectable on the upper surface of said compliant film, after final application of said article onto the substrate.
An adhesive-backed article, comprising:
- (a) a compliant film having an upper surface and a lower surface;
- (b) a pressure sensitive adhesive having a first surface and a second surface, said first surface bonded to the lower surface of said film;
- and
- (c) a release liner bonded to the second surface of said pressure sensitive adhesive, said release liner having a microstructured surface that defines a microstructured surface in the second surface of said pressure sensitive adhesive, the microstructured surface in said adhesive forming channels that define exit pathways, the channels define a volume of at least 1×103 μm3 per any 500 μm diameter circular area of the microstructured surface of said adhesive, each pathway providing a continuous fluid egress to a periphery of said article when said release liner is removed and said article is applied to a substrate, said adhesive-backed article being sealable as indicated by an initial percent wet out test result of at least 85%, and the channels being substantially undetectable on the upper surface of said compliant film, after removal of the release liner and final application of said article onto the substrate.
Dependencies are inferred from the claim text.