US3611919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for multiple embossing of continuous webs
Assignee: Kimberly Clark Corp
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Filing: 1968-12-20
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Granted: 1971-10-12
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Expires: 1988-12-20
Abstract
Abstract A method and apparatus of forming two or more embossments repeated continuously along the length of a flexible web and out of register with each other. The embossments are formed by passing the web through two or more embossing stations on the surface of a single embossing roll, and drawing the web away from the surface of the embossing roll between successive embossing stations. The flexible web may be made of cellulosic tissue or other substantially nonresilient material, and reinforced with resilient threads or other elements extending continuously in the longitudinal direction of the web so as to maintain a constant web length between pairs of successive embossing stations. The resulting product is also disclosed.
Inventors
- 👤 Gordon D Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:25
CPC Classifications
B; B44; B44B; B44B5/00; B44B5/0047; D; D04; D04H; D04H5/00; D04H5/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
180 words
A web-embossing method comprising the steps of passing a flexible web through two or more embossing stations spaced around a single rigid metal embossing roll with the web being pressed continuously against the embossing surface of said roll at each of said stations to form repetitive superimposed continuous embossments in the web at each station, said web comprising a material including at least two layers of cellulosic tissue which is stretchable and nonresilient at the pressures applied thereto at said embossing stations and an open-mesh web of crossed threads interposed between the layers of cellulosic tissue with at least the machine direction threads in the crossed-thread web being made of a material which is resilient at the pressures applied thereto at said embossing stations so that a substantially constant web length is maintained between each pair of successive embossing stations, and drawing the web away from the surface of said embossing roll between each pair of successive embossing stations so that the repetitive embossments formed in said web at each pair of successive embossing stations are offset from each other.
Claim 2
Dependent Claim
180 words
A web-embossing method comprising the steps of passing a flexible web through two or more embossing stations spaced around a single rigid metal embossing roll with the web being pressed continuously against the embossing surface of said roll at each of said stations to form repetitive superimposed continuous embossments in the web at each station, said web comprising a material including at least two layers of cellulosic tissue which is stretchable and nonresilient at the pressures applied thereto at said embossing stations and an open-mesh web of crossed threads interposed between the layers of cellulosic tissue with at least the machine direction threads in the crossed-thread web being made of a material which is resilient at the pressures applied thereto at said embossing stations so that a substantially constant web length is maintained between each pair of successive embossing stations, and drawing the web away from the surface of said embossing roll between each pair of successive embossing stations so that the repetitive embossments formed in said web at each pair of successive embossing stations are offset from each other.
Claim 3
Dependent Claim
27 words
A web-embossing method as set forth in claim 1 wherein the thread count of said machine direction threads is between about two or three threads per inch.
Claim 4
Dependent Claim
190 words
A web-embossing method comprising the steps of passing a flexible web through two or more embossing stations spaced around a single rigid metal embossing roll with the web being pressed continuously against the embossing surface of said roll at each of said stations to form repetitive superimposed continuous embossments in the web at each station, said web comprising a material including at least two layers of cellulosic tissue which is stretchable and nonresilient at the pressures applied thereto at said embossing stations and an open-mesh web of crossed threads interposed between the layers of cellulosic tissue with at least the machine direction threads in the crossed-thread web being made of a material which is resilient at the pressures applied thereto at said embossing stations so that a substantially, constant web length is maintained between each pair of successive embossing stations, drawing the web away from the surface of said embossing roll after each embossing station and then returning the web to the surface of the embossing roll at the next embossing station so that the repetitive embossments formed in said web at successive embossing stations are offset from each other.
Claim 5
Dependent Claim
190 words
A web-embossing method comprising the steps of passing a flexible web through two or more embossing stations spaced around a single rigid metal embossing roll with the web being pressed continuously against the embossing surface of said roll at each of said stations to form repetitive superimposed continuous embossments in the web at each station, said web comprising a material including at least two layers of cellulosic tissue which is stretchable and nonresilient at the pressures applied thereto at said embossing stations and an open-mesh web of crossed threads interposed between the layers of cellulosic tissue with at least the machine direction threads in the crossed-thread web being made of a material which is resilient at the pressures applied thereto at said embossing stations so that a substantially, constant web length is maintained between each pair of successive embossing stations, drawing the web away from the surface of said embossing roll after each embossing station and then returning the web to the surface of the embossing roll at the next embossing station so that the repetitive embossments formed in said web at successive embossing stations are offset from each other.
Claim 6
Independent Claim
212 words
A method of forming two or more embossments in a flexible web using a single rigid metal embossing roll, said web including at least two layers of cellulosic tissue which is stretchable and nonresilient at the pressures applied thereto on said embossing roll and an open-mesh web of crossed threads interposed between the layers of cellulosic tissue with at least the machine direction threads in the crossed-thread web being made of a material which is resilient at the pressures applied thereto on said embossing roll, said method comprising the steps of continuously advancing the web into engagement with the single embossing roll where the web is pressed firmly and continuously against the embossing surface of said embossing roll to form a first repetitive continuous embossment in the web, continuously withdrawing the embossed web from said first embossing station and drawing the web away from the surface of said embossing roll, and continuously returning the embossed web to the surfacE of said single embossing roll and into engagement with said roll at a second embossing station where the web is again pressed firmly and continuously against the embossing surfaces of said roll to form a repetitive continuous embossment in the web, said second embossment being offset from and superimposed on said first embossment.
Claim 7
Independent Claim
212 words
A method of forming two or more embossments in a flexible web using a single rigid metal embossing roll, said web including at least two layers of cellulosic tissue which is stretchable and nonresilient at the pressures applied thereto on said embossing roll and an open-mesh web of crossed threads interposed between the layers of cellulosic tissue with at least the machine direction threads in the crossed-thread web being made of a material which is resilient at the pressures applied thereto on said embossing roll, said method comprising the steps of continuously advancing the web into engagement with the single embossing roll where the web is pressed firmly and continuously against the embossing surface of said embossing roll to form a first repetitive continuous embossment in the web, continuously withdrawing the embossed web from said first embossing station and drawing the web away from the surface of said embossing roll, and continuously returning the embossed web to the surfacE of said single embossing roll and into engagement with said roll at a second embossing station where the web is again pressed firmly and continuously against the embossing surfaces of said roll to form a repetitive continuous embossment in the web, said second embossment being offset from and superimposed on said first embossment.
Claim 8
Dependent Claim
94 words
A method as set forth in claim 4 which includes the further steps of continuously withdrawing the embossed web from said second embossing station and drawing the web away from the surface of said embossing roll, and continuously returning the embossed web to the surface of said single embossing roll and into engagement with said roll at a third embossing station where the web is again pressed firmly against the surface of said roll to form a third continuous embossment in the web, said third embossment being offset from said first and second embossments.
Claim 9
Dependent Claim
177 words
Apparatus for forming two or more embossments in a flexible web, said apparatus comprising the combination of a single rigid metal embossing roll, a first resilient roller for continuously advancing the web into engagement with the single embossing roll at a first embossing station and pressing the web firmly against the surface of said embossing roll so that said roll continuously forms in said web a first continuous embossment in the web, a second resilient roller for continuously advancing the embossed web and pressing said web into engagement with said roll at a second embossing station where the web is again pressed firmly against the surface of said roll so that the same roll continuously forms in said web a second continuous embossment whereby the entire length of said web is doubly embossed, and means for continuously drawing the embossed web away from the surface of said embossing roll between said first and second embossing stations so that the embossment formed at said first and second embossing stations are offset from each other in the machine direction.
Claim 10
Dependent Claim
177 words
Apparatus for forming two or more embossments in a flexible web, said apparatus comprising the combination of a single rigid metal embossing roll, a first resilient roller for continuously advancing the web into engagement with the single embossing roll at a first embossing station and pressing the web firmly against the surface of said embossing roll so that said roll continuously forms in said web a first continuous embossment in the web, a second resilient roller for continuously advancing the embossed web and pressing said web into engagement with said roll at a second embossing station where the web is again pressed firmly against the surface of said roll so that the same roll continuously forms in said web a second continuous embossment whereby the entire length of said web is doubly embossed, and means for continuously drawing the embossed web away from the surface of said embossing roll between said first and second embossing stations so that the embossment formed at said first and second embossing stations are offset from each other in the machine direction.
Claim 11
Dependent Claim
80 words
Apparatus as set forth in claim 6 which includes means for continuously withdrawing the embossed web from said second embossing station and drawing the web away from the surface of said embossing roll, and a third resilient roller for continuously returning the embossed web to the surface of said single embossing station where the web is again pressed firmly against the surface of said roll to form a third continuous embossment which is offset from said first and second embossments.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |