Functional paper for electronics printing and methods of making
AssigneesNorth Carolina State University, Domtar Paper Company, LLC
InventorsLokendra Pal, Manoj Kumar Dixit, Sachin Agate, Brian Watson Ranson
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Abstract
Provided herein is an uncoated functional paper formed from a slurry comprising about 10 wt % to 90 wt % cellulosic fibers and about 1% to 25% sizing solution per total weight of the fibers. The sizing solution can be applied during papermaking and/or applied in a size press or coater. The paper can be calendered at a temperature greater than 50° C. Methods of making are also provided. Also provided are flexible electronics including a functional paper substrate printed with a conductive ink.
Claims6
A method of making a functional paper comprising:
- forming a paper from a slurry, the slurry comprising about 10 wt % to 90 wt % cellulosic fibers and about 1% to 25% sizing solution per total weight of the fibers;
- calendering the paper at a temperature greater than 50° C. and a pressure between 100 psi and 1500 psi;
- printing on the paper with a conductive ink wherein the calendering can be performed before printing, after printing, or both;
- applying an internal sizing agent at a wet end of a paper machine;
- and
- applying a surface sizing solution at a dry end of the paper machine using a size press,
- wherein the surface sizing solution is selected from an aqueous solution comprising 10% solids by weight, wherein the solids comprise about 90 wt % ethylated starch and 10 wt % NaCl or wherein the solids comprise about 85 wt % ethylated starch, 10 wt % NaCl and 5 wt % acrylic copolymer.
Dependencies are inferred from the claim text.