Modification of surfaces in order to increase the surface tension
First Claim
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1. Method of increasing the surface tension of at least one solid object, the method comprising the steps of:
- providing at least a portion of an analytical test element that is formed to transport a sample liquid from a sample application site to a determination site, the test element including a polyester foil having a surface of an element that can be oxidized with water or an alloy that can be oxidized with water that defines the at least one solid object having a surface,depositing a layer of at least one element that can be oxidized with water or an alloy that can be oxidized with water on the surface of the polyester foil that defines the solid object to form a deposited layer, andsubsequently applying boiling water or water vapour on the deposited layer, whereby the resulting deposited layer is solid and more hydrophilic than the surface of the polyester foil that defines the solid object.
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Abstract
A process is provided for the production of a surface coating as well as the use of surface coatings to increase the surface tension of objects. The surface coating is obtained by depositing a layer of at least one element that can be oxidized with water or an alloy that can be oxidized with water. Subsequently, the deposited layer is subjected to boiling water or water vapor. The element is generally derived from the following group of elements: Al, Si, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, Ga, Ge, Zr, Nb, Cd, In, Sn, Sb.
24 Citations
23 Claims
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1. Method of increasing the surface tension of at least one solid object, the method comprising the steps of:
- providing at least a portion of an analytical test element that is formed to transport a sample liquid from a sample application site to a determination site, the test element including a polyester foil having a surface of an element that can be oxidized with water or an alloy that can be oxidized with water that defines the at least one solid object having a surface,
depositing a layer of at least one element that can be oxidized with water or an alloy that can be oxidized with water on the surface of the polyester foil that defines the solid object to form a deposited layer, and subsequently applying boiling water or water vapour on the deposited layer, whereby the resulting deposited layer is solid and more hydrophilic than the surface of the polyester foil that defines the solid object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- providing at least a portion of an analytical test element that is formed to transport a sample liquid from a sample application site to a determination site, the test element including a polyester foil having a surface of an element that can be oxidized with water or an alloy that can be oxidized with water that defines the at least one solid object having a surface,
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18. Method of increasing the surface tension of at least one solid object, the method comprising the steps of:
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providing at least a portion of an analytical test element that is formed to transport a sample liquid from a sample application site to a determination site, the test element including a polyester foil having a surface of an element that can be oxidized with water or an alloy that can be oxidized with water that defines the at least one solid object having a surface, depositing on the surface of the polyester foil a layer of at least one element that can be oxidized with water or an alloy that can be oxidized with water and subsequently applying superheated water vapour to the deposited layer, whereby the resulting deposited layer is solid and more hydrophilic than the surface of the polyester foil the defines the solid object. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification