Method for the production of an analytical element
View Patent ↗A method is provided for producing an analytical element comprising at least one test field for analyzing a liquid sample, wherein provision is made for a carrier on which a polymer fabric is arranged. At least one portion of the polymer fabric is irradiated with UV laser light and thereby hydrophobized.
1. A method for producing an analytical element with at least one test field for analyzing a liquid sample, comprising providing a carrier on which a polymer fabric is arranged, coating the polymer fabric with a detergent, irradiating at least one portion of the polymer fabric with UV laser light to thereby hydrophobize the at least one portion, and at least partly removing the detergent at the at least one portion of the polymer fabric by the irradiating with UV laser light.
2. The method as claimed in claim 1 , wherein the polymer fabric is a monophilic fabric comprising threads which run generally parallel or generally perpendicular to one another, wherein the threads are spaced apart by between about 1 μm and about 0.5 mm.
3. The method as claimed in claim 1 , wherein the detergent comprises at least one detergent selected from the group consisting of sodium dioctylsulfosuccinate (DONS), octanoyl-N-methylglucamide and polyethylene glycol [4-(1,1,3,3-tetramethylbutyl)phenyl]ether.
4. The method as claimed in claim 1 , wherein the at least one portion of the polymer fabric where the detergent is at least partly removed by UV laser light is super-hydrophobized.
5. The method as claimed in claim 1 , wherein providing the analytical element comprises producing a test element for determining an analyte in a liquid sample, the test element comprising an application zone for the liquid sample, wherein the irradiating of the at least one portion of the polymer fabric with UV laser light is performed in a region around the application zone.
6. The method as claimed in claim 5 , wherein producing the test element comprises applying a detection film to the carrier whilst keeping edges of the carrier uncovered, the detection film being covered by the polymer fabric, the polymer fabric projecting beyond the detection film in lateral regions and covering the uncovered edges of the carrier, wherein the irradiating of the at least one portion of the polymer fabric with UV laser light is also performed in the lateral regions.
7. The method as claimed in claim 6 , wherein the carrier comprises an adhesive tape by means of which the test element is transferred onto a transportation tape as a self-adhesive test label.
8. The method as claimed in claim 1 , wherein the method for producing the analytical test element generally comprises a roll-to-roll process.
9. An analytical element produced by the method as claimed in claim 1 , comprising at least one test field for analyzing a liquid sample, wherein the analytical element comprises a carrier on which a polymer fabric is arranged, and wherein at least one portion of the polymer fabric is hydrophobized by irradiation with UV laser light.
10. The analytical element as claimed in claim 9 , wherein the analytical element comprises an analytical tape with a multiplicity of test elements spaced apart in the direction of the tape.