The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 1981
Filed:
Jul. 22, 1980
Yoshimi Tsuchiya, Utsunomiya, JP;
Hiroshi Mizutani, Yachiyo, JP;
Kao Soap Co., Ltd., Tokyo, JP;
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.