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US4196045A
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Method and apparatus for texturizing and softening non-woven webs
Assignee: Beloit Technologies Inc
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Filing: 1978-04-03
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Granted: 1980-04-01
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Expires: 1998-04-03
Abstract
Abstract A method and apparatus for texturing, softening and building bulk into a non-woven fabric web, such as tissue or toweling paper, wherein the paper is passed through a plurality of nipped rolls while interposed between a pair of screens. In the preferred embodiment, each screen is comprised of metal and plastic shute and warp strands, respectively. The web is passed through a first texturing nip while wet and then dried before passing through subsequent nips to effect the texturing and softening of the web.
Inventors
- 👤 William L. Ogden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:30
CPC Classifications
D; D21; D21F; D21F11/00; D21F11/006
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
126 words
A method of texturing a non-woven web whereby the web attains a breaking length strength of about 200 meters or more, a bulk of about 5.5 cm 3 /g or more and a softness of about 25-35 g or less, HOM, comprising the steps: 1. passing the web in contact with at least one texturing screen member between a pair of nipped rolls when the web has a moisture content of between about 40%-80% to wet texture the web; 2. drying the web to substantially air dry; 3. passing the web between a pair of nipped rolls while interposed between a pair of texturing wire screens a plurality of times between about 3-14 passes at a roll nip pressure each time less than about 35 PLI.
Claim 2
Independent Claim
126 words
A method of texturing a non-woven web whereby the web attains a breaking length strength of about 200 meters or more, a bulk of about 5.5 cm 3 /g or more and a softness of about 25-35 g or less, HOM, comprising the steps: 1. passing the web in contact with at least one texturing screen member between a pair of nipped rolls when the web has a moisture content of between about 40%-80% to wet texture the web; 2. drying the web to substantially air dry; 3. passing the web between a pair of nipped rolls while interposed between a pair of texturing wire screens a plurality of times between about 3-14 passes at a roll nip pressure each time less than about 35 PLI.
Claim 3
Dependent Claim
52 words
The method as set forth in claim 1, wherein: the nip pressure in the initial nip while the web is wet is less than about 50 PLI; the pressure of the nipped rolls through which the web passes after it has been dried ranges from about 5 PLI to about 35 PLI.
Claim 4
Dependent Claim
41 words
The method as set forth in claim 1, wherein: the web in step (1) is passed between the pair of nipped rolls while interposed between a pair of screens, the roll nip pressure being between about 5 PLI and 50 PLI.
Claim 5
Dependent Claim
27 words
The method as set forth in claim 1, further including the step of: separating at least one screen from the web in step (3) between roll nips.
Claim 6
Dependent Claim
31 words
The method as set forth in claim 1, wherein: at least one of the pair of texturing screen members comprises a composite screen having metal warp wires and plastic shute wires.
Claim 7
Dependent Claim
19 words
The method as set forth in claim 1, wherein: the web in step (3) is supported between successive nips.
Claim 8
Dependent Claim
119 words
Apparatus for texturing an initially moist non-woven web comprising, in combination: a first pair of nipped rolls; at least one first screen member for traveling through the first pair of nipped rolls once while in contact with the web when the web has a moisture content of between about 40% and 80% to thereby wet texture the web; drying means for receiving the wet textured web and drying it to substantially air dry; a plurality of nipped roll couples for successively receiving the dried web between their nips; at least one second texturing screen arrayed to pass successively between the nips of the plurality of roll couples from about 3 to about 14 passes together with the dry web.
Claim 9
Dependent Claim
119 words
Apparatus for texturing an initially moist non-woven web comprising, in combination: a first pair of nipped rolls; at least one first screen member for traveling through the first pair of nipped rolls once while in contact with the web when the web has a moisture content of between about 40% and 80% to thereby wet texture the web; drying means for receiving the wet textured web and drying it to substantially air dry; a plurality of nipped roll couples for successively receiving the dried web between their nips; at least one second texturing screen arrayed to pass successively between the nips of the plurality of roll couples from about 3 to about 14 passes together with the dry web.
Claim 10
Dependent Claim
66 words
Apparatus for texturing a non-woven web as set forth in claim 7, further including: means separating each of the second texturing screen or screens from the web between successive nips whereby the screen or screens re-engage the web at a slightly different location as they travel through the next nip together, whereby the web is textured and attains the desired degree of strength, softness and bulk.
Claim 11
Dependent Claim
43 words
Apparatus for texturing a non-woven web as set forth in claim 7, wherein: the first and second texturing screens have a mesh size of from about 18×18 to about 50×50 with a wire diameter of from about 0.010 inch to about 0.020 inch.
Claim 12
Dependent Claim
33 words
Apparatus for texturing a non-woven web as set forth in claim 7, wherein: at least one of the second texturing screen or screens comprises warp wires of plastic and shute wires of metal.
Claim 13
Dependent Claim
33 words
Apparatus for texturing a non-woven web as set forth in claim 10, wherein: the composite metal plastic texturing screen or screens are about 31×27 mesh size with wire of about 0.013 inch diameter.
References Cited (Backward Citations)
US768353A
Cited
US3020168A
Cited
US3301746A
Cited
US3230136A
Cited
US3481830A
Cited
USRE28459E
Cited
US3629056A
Cited
USRE27453E
Cited
US3812000A
Cited
US3821068A
Cited
US3994771A
Cited
US4087319A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |