Patent US5223319A successfully refreshed from Google Patents.
US5223319A
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US
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Nonwoven wiper having high oil capacity
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1990-08-10
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Granted: 1993-06-29
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Expires: 2010-08-10
Abstract
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.
Inventors
- 👤 James D. Cotton
- 👤 Paul J. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:42
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/10; D04H3/16; D04H1/00; D04H1/70; D04H1/76; D04H3/105; D06; D06C; D06C23/00; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10S428/913; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24479; Y10T428/24595; Y10T428/24603
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
50 words
A nonwoven wiper having an oil capacity greater than about 500 percent by weight of oil to the weight of the web consisting essentially of: a nonwoven web of fibers having at least one raised surface area defining an aperture where the fibers generally adjacent the aperture are substantially unconsolidated.
Claim 2
Dependent Claim
50 words
A nonwoven wiper having an oil capacity greater than about 500 percent by weight of oil to the weight of the web consisting essentially of: a nonwoven web of fibers having at least one raised surface area defining an aperture where the fibers generally adjacent the aperture are substantially unconsolidated.
Claim 3
Dependent Claim
15 words
A wiper as recited in claim 1, wherein the nonwoven web is a spunbonded web.
Claim 4
Dependent Claim
26 words
A wiper as recited in claim 2, wherein the nonwoven web has a basis weight of from about 0.5 to about 5.0 ounces per square yard.
Claim 5
Dependent Claim
22 words
A wiper as recited in claim 3, wherein the nonwoven web has a basis weight of about 1.89 ounces per square yard.
Claim 6
Dependent Claim
21 words
A wiper of claim 1, having a plurality of raised surface areas with both surfaces of the wiper having raised areas.
Claim 7
Dependent Claim
45 words
A wiper as recited in claim 1, wherein the raised area has an average height, measured from the base plane of the web in the z-direction of the web to the most extended fibers of the raised area from about 0.0075 to about 0.125 inches.
Claim 8
Dependent Claim
26 words
A wiper as recited in claim 1, wherein the number of raised areas averages from about 6 per square inch to about 400 per square inch.
Claim 9
Dependent Claim
19 words
A wiper as recited in claim 1, wherein the number of raised areas averages about 100 per square inch.
Claim 10
Dependent Claim
108 words
A high capacity nonwoven comprising thermoplastic fibers and having a basis weight generally in the range of from about 0.5 ounces per square yard to about 5.0 ounces per square yard and comprised of an average of about 6 to about 100 raised surface areas per square inch, said raised surface areas having an average height in the range of from about 0.0075 inch to about 0.125 inch and being defined by an aperture which may be partially closed by fibers extending across the aperture and which has adjacent fibers that are substantially unconsolidated and not fixed in position with respect to the other fibers in the web.
Claim 11
Dependent Claim
108 words
A high capacity nonwoven comprising thermoplastic fibers and having a basis weight generally in the range of from about 0.5 ounces per square yard to about 5.0 ounces per square yard and comprised of an average of about 6 to about 100 raised surface areas per square inch, said raised surface areas having an average height in the range of from about 0.0075 inch to about 0.125 inch and being defined by an aperture which may be partially closed by fibers extending across the aperture and which has adjacent fibers that are substantially unconsolidated and not fixed in position with respect to the other fibers in the web.
Claim 12
Independent Claim
93 words
A method of forming a nonwoven wiper having an oil capacity of greater than about 500 percent by weight of the wiper, comprising the steps of: providing a nonwoven web; 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; 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.
Claim 13
Independent Claim
93 words
A method of forming a nonwoven wiper having an oil capacity of greater than about 500 percent by weight of the wiper, comprising the steps of: providing a nonwoven web; 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; 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.
Claim 14
Dependent Claim
26 words
A method as recited in claim 10, wherein each of the pins has a shaft diameter of from about 0.030 to about 0.250 of an inch.
Claim 15
Dependent Claim
22 words
A method as recited in claim 10, wherein the diameter of the shaft of the pins is about 0.072 of an inch.
Claim 16
Dependent Claim
30 words
A method as recited in claim 10, wherein each of the pins has a chamfered end with a chamfer angle which ranges from about 45 degrees to about 90 degrees.
Claim 17
Dependent Claim
28 words
A method as recited in claim 10, wherein the depth of penetration of the pins through the web ranges from about 0.015 to about 0.220 of an inch.
Claim 18
Dependent Claim
15 words
A method as recited in claim 10, wherein the pins are comprised of a metal.
Claim 19
Dependent Claim
13 words
A method as recited in claim 10, wherein the pins are stainless steel.
Claim 20
Dependent Claim
25 words
A method as recited in claim 10, wherein the orifice diameter is at least 0.010 inch greater than the diameter of the corresponding pin shaft.
Claim 21
Dependent Claim
19 words
A method as recited in claim 10, wherein the raised areas extend outwardly from both surfaces of the web.
Claim 22
Dependent Claim
29 words
A nonwoven wiper having an oil capacity greater than about 500 percent by weight of oil to the weight of the web, formed by the method of claim 10.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-06-28 | 1996-12-28 | 1997-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-28 | 2000-12-28 | 2001-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-28 | 2004-12-28 | 2005-06-29 | $7700.00 | Window Closed / Lapsed |