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1. (WO2002027092) METHOD OF PREPARING WATER-SOLUBLE NONWOVEN FABRIC
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2002/027092    International Application No.:    PCT/KR2001/000437
Publication Date: 04.04.2002 International Filing Date: 20.03.2001
Chapter 2 Demand Filed:    25.04.2002    
IPC:
D06M 13/11 (2006.01), D04H 1/04 (2012.01), D04H 1/42 (2012.01), D04H 1/425 (2012.01), D04H 1/4258 (2012.01), D06M 11/11 (2006.01), D06M 11/40 (2006.01), D06M 13/21 (2006.01), D21H 25/02 (2006.01)
Applicants: TEX-TECH CO., LTD. [KR/KR]; San 12-17, Yami-ri, Youngbuk-myun Pochun-gun Kyeongki-do 487-891 (KR)
Inventors: SHIN, Jae-kyun; (KR)
Agent: CHOI, Duk, Kyu; Chunwoo Bldg. 5th Floor 736 Yoksam-dong Kangnam-ku Seoul 135-080 (KR)
Priority Data:
2000/57474 29.09.2000 KR
Title (EN) METHOD OF PREPARING WATER-SOLUBLE NONWOVEN FABRIC
(FR) PROCEDE DE PREPARATION D'UNE STRUCTURE NON TISSEE HYDROSOLUBLE
Abstract: front page image
(EN)The water soluble nonwoven fabric according to the present invention is prepared by (a) preparing a nonwoven fabric with cellulose fibers, (b) mercerizing the nonwoven fabric with aqueous sodium hydroxide in a solvent in a bath, (c) carrying out etherification of the mercerized fabric by adding monochloro acetic acid solution, (d) neutralizing the fabric with a hydrochloric acid solution to be a pH of about 6.0 to 9.0 in the bath, and (e) post-treating the fabric through dehydration and drying. The dissolving time of the nonwoven fabric can be controlled depending on the amounts of the solid monochloro acetic acid, solid sodium hydroxide and hydrochloric acid to be used.
(FR)la toile non tissée hydrosoluble selon l'invention s'obtient de la façon suivante : (a) préparation d'une structure non tissée à partir de fibres de cellulose, (b) mercerisation de la toile non tissée avec de la soude caustique dans un bain de solvant, (c) éthérification de la toile mercerisée par adjonction d'une solution d'acide monochloro acétique, (d) neutralisation de la toile au moyen d'une solution d'acide chlorhydrique présentant un pH de 6,0 à 9,0 environ dans le bain, et (e) post-traitement de la toile par déshydratation et séchage. Le temps de dissolution de la toile non tissée peut être modulé en fonction des doses d'acide monochloro acétique solide, d'l'hydroxyde de sodium solide et d'acide chlorhydrique à utiliser.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)