Method for the manufacture of a self-supporting test field material
First Claim
1. A method for manufacturing a self-supporting test field material, said method comprising the steps of:
- providing a reagent film mass, said reagent film mass including at least one reagent for performing an analysis of a liquid sample;
providing a carrier material comprising an open-pored fibre structure, and having a thickness of less than 0.1 mm;
pressing said reagent film mass into a first side of said carrier material wherein said reagent film mass substantially penetrates into pores of the open-pored fibre structure of the carrier material and wherein a portion of said reagent film mass penetrates through from the first side of the carrier material to a second side of the carrier material;
smoothing the reagent film mass on the second side of the carrier material by a relative motion of the carrier material and a smoothing tool wherein said pores are substantially filled by the reagent film mass wherein a resulting thickness of the test field material is less than 0.1 mm, and wherein the reagent film mass is distributed essentially symmetrically through the test field material; and
drying the carrier material in a non-contact manner.
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Accused Products
Abstract
Method for the manufacture of a self-supporting test field material of very small layer thickness. In a strip of test material (1) comprising an open-pored fibre structure a reagent film mass (6) is embedded from an application side (1a) in such a way that it extensively penetrates into the pores of the carrier material. The reagent film mass (6) is smoothed on the opposite side (1b) by the relative motion of the ribbon and a smoothing tool (4) in such a way that the pores of the composite fibre structure are spanned by the reagent film mass (6). Finally, the carrier material ribbon (10) thus produced is dried essentially free of contact.
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Citations
19 Claims
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1. A method for manufacturing a self-supporting test field material, said method comprising the steps of:
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providing a reagent film mass, said reagent film mass including at least one reagent for performing an analysis of a liquid sample; providing a carrier material comprising an open-pored fibre structure, and having a thickness of less than 0.1 mm; pressing said reagent film mass into a first side of said carrier material wherein said reagent film mass substantially penetrates into pores of the open-pored fibre structure of the carrier material and wherein a portion of said reagent film mass penetrates through from the first side of the carrier material to a second side of the carrier material; smoothing the reagent film mass on the second side of the carrier material by a relative motion of the carrier material and a smoothing tool wherein said pores are substantially filled by the reagent film mass wherein a resulting thickness of the test field material is less than 0.1 mm, and wherein the reagent film mass is distributed essentially symmetrically through the test field material; and drying the carrier material in a non-contact manner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14)
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13. A self-supporting test field material for a test carrier for the determination of an analyte in a body fluid, said test field material comprising:
a reagent film mass embedded in an open-pored fibre structure (19) wherein said reagent film mass spans and thus closes pores of said open-pored fibre structure, the reagent film mass including at least one reagent of an analysis reagent system and a polymer film former, said reagent film mass being pressed into the composite fibre structure and smoothed on first and second sides thereof, such that said test field material has substantially smooth first and second sides, and wherein a mean thickness of said test field material is less than 0.1 mm. - View Dependent Claims (15, 16)
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17. A self-supporting test field material for a test carrier for the determination of an analyte in a body fluid, said test field material comprising:
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an open-pored fibre structure of a single layer fabric having pores with an average pore size between 0.02 and 0.08 mm; a reagent film mass disposed upon and pressed through said fibre structure, wherein said reagent film mass spans and closes the pores of said fibre structure, said reagent film mass containing at least one reagent of an analysis reagent system and a polymer film former, wherein said reagent film mass is pressed into the fibre structure and smoothed on first and second sides thereof, such that the single layer fabric is covered by a thin layer of said reagent film mass wherein said test field material has a thickness of less than 0.1 mm and wherein the test field material has substantially smooth first and second sides which correspond to the first and second sides of the fibre structure. - View Dependent Claims (18, 19)
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Specification