USE OF THINNINGS AND OTHER LOW SPECIFIC GRAVITY WOOD FOR LYOCELL PRODUCT METHOD

Japanese Patent JP3965154

B2

PROBLEM TO BE SOLVED: To provide a method for economically producing lyocell products from a pulp containing hemicellulose usually removed.
SOLUTION: The method for producing lyocell products comprises making a dope from the pulp and forming lyocell products from the dope, wherein the pulp is obtained from low specific gravity wood provided by thinning operations and unbleached, comprises at least 7% by weight hemicellulose and has a viscosity less than about 32cP, a copper number less than about 2, a weighted average fiber length less than 2.7mm and a coarseness less than 23mg/100 m. The products are produced by one of meltblowing, centrifugal spinning, spun bonding and dry-jet wet.

WO/2020/252683	METHOD AND SYSTEM FOR RECOVERING FIBERS FROM FIBROUS PRODUCTS
WO/2017/182877	FIBRES COMPRISING MICROFIBRILLATED CELLULOSE AND METHODS OF MANUFACTURING FIBRES AND NONWOVEN MATERIALS THEREFROM
WO/1998/002602	METHOD FOR THE MANUFACTURE OF LYOCELL FIBRE

James E. Seeley
W Harvey Persinger, Junior
Kent Robage
Meng Kui Luo

JP2003433949A

August 29, 2007

December 26, 2003

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WEYERHAEUSER COMPANY

D01F2/00; C08B1/00; D01D5/098; D01D5/18; D04H1/4258; D21C3/00; D21C3/02; D21C9/00; D21C9/10; (IPC1-7): D01F2/00

JP2002506931A
JP7102079A
JP10158925A
JP11508332A
JP2001501260A
JP2004211281A
JP10501851A
JP2003533602A
JP61138790A

Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Tatsuo Tomizu

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