Surgery – Respiratory method or device – Ozone or ion generation
Patent
1980-07-22
1981-12-29
Rosenbaum, C. Fred
Surgery
Respiratory method or device
Ozone or ion generation
428212, 428298, A61F 1316
Patent
active
043077218
ABSTRACT:
There is disclosed a non-woven fabric suitable as the envelope for a sanitary napkin which has an integrated three-layer structure including a first layer forming the surface falling in contact with the skin, a third layer forming the back face and a second layer interposed between said two layers, said envelope being characterized in that (a) the first layer is composed of rayon fibers having 1.5 to 3 deniers and thermoplastic fibers, the weight ratio of the rayon fibers to the thermoplastic fibers is in the range of from 40/60 to 70/30 and the rayon fibers and thermoplastic fibers are densely compacted (b) the second layer is composed of rayon fibers having a fineness of 3 to 7 deniers and thermoplastic fibers, the weight ratio of the rayon fibers to the thermoplastic fibers is in the range of from 60/40 to 90/10 and the rayon fibers and thermoplastic fibers are loosely compacted, (c) the third layer is composed of rayon fibers having a fineness of 1.5 to 3 deniers and thermoplastic fibers and the weight ratio of the rayon fibers to the thermoplastic fibers is in the range of from 40/60 to 90/10, and (d) the entire basis weight of the three layers is 15 to 30 g/m.sup.2.
REFERENCES:
patent: 2862251 (1958-12-01), Kalwaites
patent: 3420235 (1969-01-01), Harmon
patent: 3695269 (1972-10-01), Malaney
patent: 3804092 (1974-04-01), Tunc
patent: 4129132 (1978-12-01), Butterworth et al.
patent: 4145464 (1979-03-01), McConnell et al.
Mizutani Hiroshi
Tsuchiya Yoshimi
Kao Soap Co. Ltd.
Rosenbaum C. Fred
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