Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Patent
1996-02-15
1997-03-11
Raimund, Christopher W.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Shaping by extrusion
2642108, 26421114, 26421117, B29C 4908
Patent
active
056098090
ABSTRACT:
A method of making a nonwoven fabric having biodegradability which can be advantageously used as a biodegradable material for general disposable-type household supplies represented by such items as sanitary materials, wiping cloths, and packaging materials. The nonwoven fabric is formed of a fiber material made of poly-.epsilon.-caprolactone and/or poly-.beta.-propiolactone. The nonwoven fabric contains not less than 20% by weight of such a fiber material having a filament fineness of 0.8 to 6 denier. This provides sufficient tensile strength and soft hand which enable the nonwoven fabric to be advantageously used in practical applications. Where the nonwoven fabric is formed of a superfine fiber of the above noted type having a filament fineness of less than 0.8 denier, it has particularly remarkable soft hand.
REFERENCES:
patent: 3800006 (1974-03-01), Katayama et al.
patent: 4306552 (1981-12-01), Gregory
patent: 4496508 (1985-01-01), Hartmmann et al.
patent: 5066231 (1991-11-01), Oxman et al.
patent: 5100435 (1992-03-01), Onwumere
patent: 5147712 (1992-09-01), Miyahara et al.
patent: 5171308 (1992-12-01), Gallagher et al.
patent: 5196247 (1993-03-01), Wu et al.
International Search Report Form PCT/ISA/210 Dated 14 January 1993 and Mailed 26 Jan. 1993.
Database WPIL, Section Ch, Week 2490, Derwent Publications Ltd., London, GB: Class A96, AN 90-182403 and JP-A-2 119 866 (Teijin), 7 May 1990.
Database WPIL, Section Ch, Week 1289, Derwent Publications Ltd., London, GB: Class A94, AN 89-090040 and JP-A-1 040,655 (Kuraray KK), 10 February 1989.
English Translation for DE-A-4 016348.
Esaki Kouji
Inoue Takashi
Kasetani Satoshi
Miyahara Yoshiki
Nishimura Shigetaka
Raimund Christopher W.
Unitika Ltd
LandOfFree
Method of manufacturing biodegradable nonwoven fabrics does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of manufacturing biodegradable nonwoven fabrics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing biodegradable nonwoven fabrics will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-440904