CURABLE COATING MATERIAL FOR NON-IMPACT PRINTING
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Accused Products
Abstract
Coating material (237) for generating a coating layer by non-impact printing wherein the coating layer represents an image and wherein a resolution of the image is at least 100 DPI, the coating material comprising a curable resin; wherein the coating material (237) exhibits a minimum viscosity when being heated from room temperature with a heating rate of 5 Kelvin per minute up to a temperature where curing of the coating material occurs, wherein the minimum viscosity is in a range between 3 Pascal seconds to 20000 Pascal seconds, in particular in a range between 50 Pascal seconds and 10000 Pascal seconds and further in particular in a range between 250 Pascal seconds and 7000 Pascal seconds; and wherein a pill flow length is below 350 mm at a potential curing temperature which may be used to cure the coating material.
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Citations
32 Claims
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1-15. -15. (canceled)
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16. Coating material for generating a coating layer by non-impact printing wherein the coating layer represents an image and wherein a resolution of the image is at least 100 DPI, the coating material comprising a curable resin;
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wherein the coating material exhibits a minimum viscosity when being heated from room temperature with a heating rate of 5 Kelvin per minute up to a temperature where curing of the coating material occurs, wherein the minimum viscosity is in a range between 3 Pascal seconds to 20000 Pascal seconds, in particular in a range between 50 Pascal seconds and 10000 Pascal seconds and further in particular in a range between 250 Pascal seconds and 7000 Pascal seconds; and wherein a pill flow length is below 350 mm at a potential curing temperature which may be used to cure the coating material, and wherein the pill flow length is determined by the following method; (i) pressing an amount of 0.75 grams of the coating material into a cylindrical pill with a diameter of 13 mm at a force of 20 kilo Newton for at least 5 seconds; (ii) putting the pill of coating material on a metal sheet at room temperature; (iii) putting the metal sheet with the pill into a furnace preheated to the potential curing temperature and tempering the pill on the metal sheet in a horizontal position for half a minute if the resin includes an acrylic resin component and for one minute if the resin does not include an acrylic resin component; (iv) tilting the metal sheet to a flowing down angle of 65° and
maintaining the metal sheet in this position for 10 minutes at the potential curing temperature;(v) removing the metal sheet from the furnace, cooling down the metal sheet and the coating material in a horizontal position, measuring a maximum length of pill on the metal sheet and taking this maximum length as the pill flow length. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification