Method for modifying the surface of a substrate
First Claim
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1. A method of modifying a surface of a substrate comprising:
- providing a substrate having a surface;
digitally applying a first fixable fluid material to at least a portion of the surface of the substrate;
fixing the first fixable fluid material to provide a first fixed coating on at least a portion of the surface of the substrate, wherein the first fixed coating has a first average receding contact angle with water;
digitally applying a second fixable fluid material to at least one of a portion of the surface of the substrate and a portion of the first fixed coating; and
fixing the second fluid material to provide a second fixed coating, wherein the second fixed coating is adjacent to the first fixed coating, wherein the second fixed coating has a second average receding contact angle with water, wherein the magnitude of the difference between the first and second average receding contact angles is at least 30 degrees.
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Abstract
At least two fixable fluid materials are digitally applied adjacent to each other on a surface of a substrate and fixed to provide fixed coatings having different surface energies. The coated substrates are useful for controlling the flow of fluids.
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Citations
41 Claims
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1. A method of modifying a surface of a substrate comprising:
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providing a substrate having a surface;
digitally applying a first fixable fluid material to at least a portion of the surface of the substrate;
fixing the first fixable fluid material to provide a first fixed coating on at least a portion of the surface of the substrate, wherein the first fixed coating has a first average receding contact angle with water;
digitally applying a second fixable fluid material to at least one of a portion of the surface of the substrate and a portion of the first fixed coating; and
fixing the second fluid material to provide a second fixed coating, wherein the second fixed coating is adjacent to the first fixed coating, wherein the second fixed coating has a second average receding contact angle with water, wherein the magnitude of the difference between the first and second average receding contact angles is at least 30 degrees. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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- 28. An article comprising a substrate having a surface, and first and second fixed coatings, wherein the first fixed coating has a first receding contact angle with water and contacts the substrate, wherein the second fixed coating has a second receding contact angle with water and contacts at least one of the substrate and the first fixed coating, wherein the first and second fixed coatings are adjacent, wherein the magnitude of the difference between the first and second receding contact angles is at least 30 degrees, and wherein at least one of the first and second fixed coatings comprises an array of dots having a resolution in at least one dimension of greater than or equal to 300 dots per inch.
Specification