Method and reagent for producing narrow, homogenous reagent stripes
First Claim
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1. An analytic test element comprising:
- a polymer web as a first solid support material; and
a reagent stripe coated onto said first solid support material wherein said reagent stripe is coated on said support material as a shear thinning, at least slightly thixotropic composition having a viscosity between about 70 and 130 mPa−
s and a surface tension of between about 33 and 42 mN/m.
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Abstract
The present invention concerns a reagent coating mass which can be used in slot-die-coating of flat support materials in the manufacturing processes of test strips. Advantageously, the reagent mass of the invention exhibits certain superior rheological properties such as viscosity, surface tension and thixotropy. The reagent mass is preferably used to coat thin, narrow and homogeneous stripes of reagent material onto flat web material.
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Citations
40 Claims
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1. An analytic test element comprising:
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a polymer web as a first solid support material; and a reagent stripe coated onto said first solid support material wherein said reagent stripe is coated on said support material as a shear thinning, at least slightly thixotropic composition having a viscosity between about 70 and 130 mPa−
s and a surface tension of between about 33 and 42 mN/m. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An analytic test element comprising:
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a polymer web as a first solid support material; and a reagent stripe deposited onto said first support material by a slot-die-coating process including the steps of; moving said solid support relative to a slot-die-coating head; maintaining a defined distance between said solid support material and said slot-die-coating head; and depositing said reagent stripe as a shear thinning at least slightly thixotropic reagent composition having a viscosity between about 70 and 130 mPa−
s and a surface tension of between 33 and 42 mN/m, on said solid support material. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification