Stock material or miscellaneous articles – Structurally defined web or sheet – Weight per unit area specified
Patent
1996-02-15
1997-03-25
Ryan, Patrick
Stock material or miscellaneous articles
Structurally defined web or sheet
Weight per unit area specified
428357, 428397, 428903, 442389, 442401, B32B 506, B32B 2700
Patent
active
056142986
ABSTRACT:
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.
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Esaki Kouji
Inoue Takashi
Kasetani Satoshi
Miyahara Yoshiki
Nishimura Shigetaka
Ryan Patrick
Unitika Ltd.
Weisberger Rich
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