Nonwoven wiper having high oil capacity
US5223319A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1990 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Aug 10, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24603
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.