IP Library Granted Patent US 9,365,977
Granted Patent B2
US 9,365,977 · App. 14/608,969 · Granted Jun 14, 2016

Cellulosic product forming process and wet formed cellulosic product

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Quick Facts
Patent No.
US 9,365,977
App. No.
14/608,969
Granted
Jun 14, 2016
Kind
B2
Abstract

According to the disclosure, a wet form cellulosic product forming process and a wet formed cellulosic product are disclosed. The process includes providing a slurry, forming the slurry into a cellulosic product, dewatering the cellulosic product, and drying the cellulosic product. Further dewatering of the cellulosic product occurs through a non-mechanical mechanism.

Claims (23)

1. A wet form cellulosic product forming process comprising:

providing a slurry comprising:

cellulosic fibers comprising recycled wood pulp that are treated with butylamine and ammonia,

water, and

a surfactant consisting essentially of a cationic surfactant having a C12 to C18 carbon chain;

forming the slurry into a cellulosic product;

dewatering the cellulosic product, wherein the dewatering comprises a non-mechanical mechanism provided by the cationic surfactant; and

drying the cellulosic product;

wherein the surfactant is present in an amount ranging from 0.1 wt. % to 1 wt. %, based on the weight of the cellulosic fibers.

2. The process of claim 1 , wherein the dewatering the cellulosic product further comprises pressing the cellulosic product.

3. The process of claim 1 , wherein the drying comprises passing the cellulosic product over heated rolls.

4. The process of claim 1 , wherein the surfactant is present in an amount ranging from about 0.3 wt. % to about 1 wt. % based on the weight of the cellulosic fiber.

5. A wet form cellulosic product forming process, the process comprising:

a) providing a slurry comprising:

recycled wood fibers treated with butylamine and ammonia;

water; and

a cationic surfactant;

b) forming a cellulosic product from the slurry;

c) dewatering the cellulosic product by a non-mechanical mechanism provided by the cationic surfactant; and

d) drying the cellulosic product,

wherein the cationic surfactant is present in the amount ranging from about 0.3 wt. % to about 1 wt. %, based on the weight of the recycled wood fibers.

6. The process of claim 5 , wherein the cationic surfactant comprises a C12 to C18 carbon chain.

7. The process of claim 5 , wherein the dewatering of step c) further comprises a mechanical mechanism that includes pressing the cellulosic product.

Assignments (4)
CHANGE OF NAME Recorded Jun 14, 2016
From: AWI LICENSING COMPANY
To: AWI LICENSING LLC
Reel/Frame 039068/0833 →
NOTICE OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Apr 11, 2016
From: AWI LICENSING LLC
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 038403/0566 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 2, 2015
From: BEAUPRE, JAMES J.; NEIVANDT, DAVID J.; KEHRER, KENNETH P.
To: ARMSTRONG WORLD INDUSTRIES, INC.; THE UNIVERSITY OF MAINE SYSTEM BOARD OF TRUSTEES
Reel/Frame 034862/0275 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 2, 2015
From: ARMSTRONG WORLD INDUSTRIES, INC.
To: AWI LICENSING COMPANY
Reel/Frame 034862/0285 →