Nonwoven wiper having high oil capacity

Details Nonwoven wiper having high oil capacity Nonwoven wiper having high oil capacity

1990-08-10

1993-06-29

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

156252, 264119, 264154, 264280, 428171, 428903, 428913, 428224, 428219, B32B 310

Patent

active

052233197

ABSTRACT:
The present disclosure is directed to a nonwoven wiper having an oil capacity greater than about 500 percent by weight of oil to the weight of the web. The wiper includes a nonwoven web of fibers having at least one raised surface area which area has an aperture through the web. The fibers generally adjacent the aperture are substantially unconsolidated, i.e., not compacted together or fused.
The disclosure also deals with a method of forming such a nonwoven wiper. The method includes the steps of: a) providing a nonwoven web; b) providing a nip roller arrangement including a first roller having a plurality of unheated pins and a second roller having a plurality of corresponding orifices; and c) passing the web through the nip roller arrangement to form a plurality of raised surface areas on the web with each of the surface areas defining an aperture where the fibers generally adjacent the aperture are substantially unconsolidated.

REFERENCES:
patent: 3616157 (1971-10-01), Smith
patent: 4307143 (1981-12-01), Meitner
patent: 4588630 (1986-05-01), Shimalla
patent: 4612226 (1986-09-01), Kennette et al.
patent: 4614679 (1986-09-01), Farrington et al.
patent: 4629643 (1986-12-01), Curro et al.
patent: 4737394 (1988-04-01), Zafiroglu
patent: 4774124 (1988-09-01), Shimalla et al.
patent: 4886632 (1989-12-01), Van Iten
patent: 4950526 (1990-08-01), Singleton

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