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:
Oct. 19, 1993
Filed:
Dec. 18, 1991
Mitsubishi Paper Mills Limited, Tokyo, JP;
Abstract
A nonwoven fabric having excellent sheet formation comprises fibers of which diameter is 7 .mu.m or less and of which ratio of fiber length to fiber diameter (L/D) is in the range of 2000<L/D.ltoreq.6000, and optionally thermalbonding fibers, and the fibers being three-dimensionally entangled. A nonwoven fabric having excellent sheet formation comprises 10-90% by weight based on the weight of the nonwoven fabric of fibers of which diameter is 7 .mu.m or less and of which L/D is 2000 or less, 90-10% by weight based on the weight of the nonwoven fabric of fibers of which diameter is 7 .mu.m or less and of which ratio of fiber length to fiber diameter (L/D) is in the range of 2000<L/D.ltoreq.6000, and optionally thermalbonding fibers, the maximum pore size of the nonwoven fabric being 5 times the mean pore size or less, and the fibers being three-dimensionally entangled.