Wipe material with nanofiber layer

Inactive Publication Date: 2004-05-13
DONALDSON CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

0009] One important characteristics of the wipe is the flexibility of the wipe and the flexibility of the fine fiber layer. While the polymers of the invention display flexural properties similar to unfilled polymer, the small fiber diameter gives the fiber on the wipe a unique flexibility and improved cleaning/polishing character. Cleaning pressure can bring the fine fiber into intimate contact with the soil, the surface regardless of its complexity. In contact with the soils, the unique nature of the fine fiber causes the fiber to combine with the soils and trap or accumulate soils as the fiber layer is mechanically stretched, wrapped and changed. In a polishing mode, the fiber small size can form an improved surface coating due to the coating having a reduced defect character due th

Problems solved by technology

The wipes often fail to substantially remove small particulate in a cleaning mode.
The large fib

Method used

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  • Wipe material with nanofiber layer
  • Wipe material with nanofiber layer
  • Wipe material with nanofiber layer

Examples

Experimental program
Comparison scheme
Effect test

Example

[0036] Examples 1, 2 and 3 show the preparation of a nanofiber layer on a wipe substrate. The wipe is tested for cleaning properties on automotive surfaces to test the cleaning properties of the material with organic and inorganic particulate soil.

[0037] The wipe substrate material used for the following examples was made from a blend of cellulose and polypropylene fibers, blended in such a way as to make one side of the material predominantly cellulose, while the other side of the material is predominantly polypropylene. The composite material has a basis weight of approximately 58 grams per square meter and a thickness of approximately 0.016 inch.

Example 1

[0038] Polyamide fibers were electrospun onto the polypropylene-rich side of a blended fiber wipes material (blend of polypropylene and cellulose). The fiber size was 0.25 micron having a basis weight of the nanofiber application was approximately 0.21 g-m.sup.-2. The resulting material was then used to wipe the dash panel of a 1...

Example

Example 2

[0039] Polyamide fibers were electrospun onto the polypropylene-rich side of a blended fiber wipes material (blend of polypropylene and cellulose). The basis weight of the nanofiber application was approximately 0.21 g-m.sup.-2, with a fiber size of approximately 0.25 microns. The resulting material was then used to wipe the interior windshield of a 1995 Ford Contour (nanofiber side in contact with the windshield), by wiping in a circular motion (approximate 8" diameter circle) 3 times, followed by wiping back and forth over the same area of the windshield 3 times, in a 10" path. The SEM's and analysis associated with this test are FIGS. 5-11.

Example

Example 3

[0040] Polyamide fibers were electrospun onto the cellulose-rich side of a blended fiber wipes material (blend of polypropylene and cellulose). The basis weight of the nanofiber application was approximately 0.21 g-m.sup.-2, with a fiber size of approximately 0.25 microns. The resulting material was then used to wipe the dash panel of a 1995 Ford Contour (nanofiber side in contact with the windshield), by swiping the material across the dash panel, back and forth, 3 times in an approximate 14" path. The scanning electro micrographs and analysis associated with this test are shown in FIGS. 12-17.

Automotive Dash Testing FIGS. 1-4

[0041] Nanofibers were applied to the polypropylene side of the two layer cellulosic / polypropylene material. The wipe was tested by its use in an automobile and was wiped on a vehicle dash.

[0042] In FIG. 1, at .times.200 magnification, we see dirt, particulate 10 sized as 50-70 .mu.m, with many much smaller particulate in the nanofiber web 11. Fabric ...

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Abstract

A flexible wipe comprising at least one conformable non-woven layer and at least one adhered nanofiber layer can be used to remove a variety of particulate soils from planar, curved or complex surfaces. The nanofiber layer is configured onto the flexible non-woven in a fashion such that particulate of a broad particle size range is trapped by the nanofiber layer and efficiently removed from the contaminated surface. The nanofiber layer comprises a web of spun fibers that can incorporate and trap soil particles for efficient soil removal.

Description

[0001] The invention is embodied in a surface shape conformable and flexible wipe having at least two layers of material. The wipe comprising a nanofiber layer and a flexible fabric substrate, can remove soils in the form of inorganic or organic particulate, oily or greasy soils, or dispersions of particulate in liquid. The wipe has a layer specifically designed to incorporate finely divided small particle size soil for efficient removal from a variety of contaminated surfaces. The layer can also absorb oily or greasy soils onto the fiber substrate. Further, when used with appropriate liquid (aqueous or organic) cleaning, dusting or other such compositions, the fine fiber layer can obtain an improved surface appearance due to the reduced size of any structure formed from cleaning compositions.[0002] Both woven and non-woven fabrics have been used for many years for cleaning and polishing purposes. Such fabrics are typically manufactured by forming fiber into a woven or non-woven str...

Claims

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Application Information

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IPC IPC(8): A45D34/00A47L13/16B08B1/00B32B5/26C11D17/04D04H1/728D04H13/00
CPCA45D34/00A45D2200/1018A45D2200/1036A47L13/16D04H13/002B32B5/26C11D17/049D04H1/728B08B1/00B32B5/08B32B2262/0261B32B2432/00D04H1/4374D04H1/559Y10T442/2041Y10T442/2049Y10T442/2139Y10T442/2402Y10T442/2508Y10T442/277Y10T442/3065Y10T442/614Y10T442/615Y10T442/626
Inventor GRAFE, TIMOTHY H.GRAHAM, KRISTINE M.
Owner DONALDSON CO INC
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