Adhesive articles which contain at least one hydrophilic or hydrophobic layer, method for making and uses for same
First Claim
1. An article for fluid transport comprising:
- a substrate having at least one fluid transport structure;
at least one adhesive article, the adhesive article comprising;
a base layer having a first and second surface; and
at least one coating layer on at least one surface of a base layer, the coating layer comprising;
(A) at least one adhesive resin and (B) at least one hydrophilic polymer, at least one surfactant or a combination of at least one hydrophilic polymer and at least one surfactant, with the proviso that when (B) is only a surfactant, then the coating layer contains less than about 40% by weight polyurethane; and
wherein the hydrophilic polymer is selected from cellulosic polymers, polyvinyl alcohol, polyvinyl pyrrolidone, dextran, nylons, polyamides, hydroxyethyl methacrylate, starches and gelatins; and
wherein the at least one adhesive article is heat sealed to the substrate and covers the at least one fluid transport structure and the coating layer is positioned to contact fluid of the fluid transport structure.
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Accused Products
Abstract
The present invention relates to an adhesive article which can be used as a layer in or a cover for various articles in which a hydrophilic or hydrophobic surface is desired. The adhesive article includes a base layer having a first surface and a second surface and a coating layer formed on the first surface of the base layer, where the coating layer contains at least one adhesive resin and at least one hydrophilic polymer; at least one adhesive resin (which can be a hydrophobic polymer) and at least one surfactant; or at least one adhesive resin, at least one hydrophilic polymer and at least one surfactant. Given the application, the coating layer can be formulated to provide either a hydrophilic or hydrophobic surface. The polymer portion of the coating provides the coating layer with sufficient hydrophilic properties to increase the rate fluid transport across (or in the area near) the coating layer.
83 Citations
22 Claims
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1. An article for fluid transport comprising:
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a substrate having at least one fluid transport structure; at least one adhesive article, the adhesive article comprising; a base layer having a first and second surface; and at least one coating layer on at least one surface of a base layer, the coating layer comprising;
(A) at least one adhesive resin and (B) at least one hydrophilic polymer, at least one surfactant or a combination of at least one hydrophilic polymer and at least one surfactant, with the proviso that when (B) is only a surfactant, then the coating layer contains less than about 40% by weight polyurethane; and
wherein the hydrophilic polymer is selected from cellulosic polymers, polyvinyl alcohol, polyvinyl pyrrolidone, dextran, nylons, polyamides, hydroxyethyl methacrylate, starches and gelatins; andwherein the at least one adhesive article is heat sealed to the substrate and covers the at least one fluid transport structure and the coating layer is positioned to contact fluid of the fluid transport structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 19, 20, 21, 22)
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8. A biosensor comprising:
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a base plate having an electrode system; a sample space formed on the base plate, the sample space being formed in such a manner as to enable the input of a sample; a reaction layer located in the sample space; and a cover for covering the top portion of the sample space, the cover being formed from an adhesive article, wherein the adhesive article comprises; a base layer having a first and second surface; and at least one coating layer on at least one surface of a base layer, the coating layer comprising;
(A) at least one adhesive resin and (B) at least one hydrophilic polymer, at least one surfactant or a combination of at least one hydrophilic polymer and at least one surfactant, with the proviso that when (B) is only a surfactant, then the coating layer contains less than about 40% by weight polyurethane. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification