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US 2026/0139438 A1Published application
Wet laid paper and paperboard products with high wet strength and method of making the same
AssigneeFirst Quality Tissue, LLC
InventorsJames E. Sealey, II, Kevin P. Brennan, Justin S. Pence, Richard James Riehle, Daniel Mark Henn
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Abstract
A method of making paper and paperboard products, including absorbent structures, is disclosed. The method includes mixing ultra-high molecular weight (“UHMW”) glyoxalated polyvinylamide (“GPVM”) adducts and high molecular weight (“HMW”) anionic polyacrylamide (“APAM”) with the furnish during stock preparation of a wet laid papermaking process. High wet strength paper and paperboard products are also disclosed.
Claims15
A paper or paperboard product, comprising:
- at least one of lignocellulosic or cellulosic fiber;
- a dichlororpropanol concentration of less than 50 ppb;
- a chloropropanediol concentration of less than 300 ppb;
- and
- from 0 to 0.09% by weight polyaminoamide-epihalohydrin,
- the paper or paperboard product having a Kappa number between 20 to 100.
3 more elements
Dependencies are inferred from the claim text.