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US 5,254,399 AGranted
Nonwoven fabric
AssigneeMitsubishi Paper Mills Limited
InventorsYasuyuki Oku, Takeshi Yamasaki, Masanobu Matsuoka
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AssigneeMitsubishi Paper Mills Limited
InventorsYasuyuki Oku, Takeshi Yamasaki, Masanobu Matsuoka
Estimating the term…
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.
A nonwoven fabric having good sheet formation comprising fibers whose diameter is 7 .mu.m of less, whose length (L) to diameter (D) ratio is within the range of 2000<L/D.ltoreq.6000, and wherein the fibers are three-dimensionally entangled.
A nonwoven fabric having good sheet formation comprising fibers whose diameter is 7 .mu.m or less and which are three-dimensionally entangled, and wherein the size of the pores in the nonwoven fabric is such that the maximum pore size is 5 times or less the mean pore size.
Dependencies are inferred from the claim text.