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US 2019/0211507 A1Published application
Paper substrates and articles containing antimicrobial components as well as methods of making and using the same
AssigneeInternational Paper Company
InventorsVICTOR P. HOLBERT, SANDEEP KULKARNI, RICHARD C. WILLIAMS, RICHARD D. FABER
Life of this patent
Estimating the term…
Abstract
The invention relates to the papermaking art and, in particular, to the manufacture of paper substrates, paper-containing articles such as file folders, having improved reduction or inhibition in the growth of microbes, mold and/or fungus.
Claims25
1) An paper substrate, comprising
- a web of cellulose fibers;
- an antimicrobial compound, wherein said antimicrobial compound is approximately dispersed evenly throughout from 100% to 5% of the web.
10) A paper substrate, comprising
- a first layer comprising a web of cellulose fibers;
- and
- a size-press applied coating layer in contact with at a portion of at least one surface of the first layer, wherein the coating layer comprises an antimicrobial compound and wherein from 0.5 to 100% of the coating layer interpenetrates the first layer.
21) A method of making a paper substrate, comprising
- contacting cellulose fibers with an antimicrobial compound during or prior to a papermaking process, wherein the cellulose fibers are contacted with the antimicrobial compound at the wet end of the papermaking process, thin stock, thick stock, machine chest, the headbox, size press, coater, shower, sprayer, steambox, or a combination thereof.
22) A method of making a paper substrate, comprising
- contacting cellulose fibers with an antimicotic or fungicide during or prior to a papermaking process, wherein the contacting occurs at the size press and produces a paper substrate comprising a first layer comprising a web of cellulose fibers and a size-press applied coating layer in contact with at a portion of at least one surface of the first layer so that from 25 to 75% of the size-press applied coating layer interpenetrates the first layer.
24) A method of making a paper substrate, comprising
- contacting cellulose fibers with an antimicrobial compound during or prior to a papermaking process, wherein the contacting occurs at the wet end of the papermaking process and produces a paper substrate comprising a web of cellulose fibers and an antimicrobial compound wherein the antimicrobial compound is approximately dispersed evenly throughout the web.
Dependencies are inferred from the claim text.