Patent EP0205286A2 successfully refreshed from Google Patents.
EP0205286A2
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EP
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Macroscopically expanded three-dimensional polymeric web for transmitting both dynamically deposited and statically contacted fluids from one surface to the other and an absorbent bandage containing said web
Assignee: Procter and Gamble Co
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Filing: 1986-05-30
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Granted: —
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Expires: 2006-05-30
Abstract
Abstract A macroscopically expanded, three-dimensional fluid-handling polymeric web having first and second surfaces located in substantially parallel planes which are remote from one another. The web includes a multiplicity offluid-handling capillary networks of macroscopic cross-section for rapidly transmitting fluids which are dynamically deposited on the first surface of said web to the second surface of said web using the dynamic and gravitational head of the fluid as a primary driving force. Each of the macroscopic cross-section capillary networks originates as an aperture in the first surface of the web and has a continuously interconnected sidewall extending in the direction of the second surface of said web. The continuously interconnected sidewall terminates to form at least one aperture in the second surface of said web, whereby the bulk of the dynamically deposited fluid is transmitted from the first surface to the second surface of said web by the macroscopic cross-section capillary networks. The first surface of the web in which the macroscopic cross-section capillary networks originate further includes a multiplicity of fluid-handling capillary networks which are substantially smaller in cross-section than the macroscopic cross-section fluid-handling capillary networks. The smaller fluid-handling capillary networks exhibit a degree of capillary suction sufficient to transmit static fluid contained on the surface of objectswhich contact the first surface of said web generally in the direction of the second surface of said web by capillary attraction. In a preferred embodiment the smaller fluid handling capillary networks are oppositely oriented from the macroscopic cross-section capillary networks to provide improved visual and tactile impression as well as to enhance the volume of dynamically deposited fluid which flows into the macroscopic cross-section capillary networks.
Inventors
- 👤 William Robert Ouellette
- 👤 John Joseph Curro
- 👤 David Stephen Alcombright
- 👤 E. Kelly Linman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 19:00
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/512; A61F13/5123; A61F13/5121; A61F13/53; A61F13/534; A61F13/537; A61F2013/51186; A61F13/513; A61F2013/51355; A61F2013/51372; A61F13/53708; A61F2013/53721; A61F2013/53765; A61F2013/53782; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
231 words
1 A macroscopically expanded, three-dimensional fluid-handling polymeric web having first and second surfaces located in substantially parallel planes which are remote from one another, said web including a multiplicity of fluid-handling capillary networks of macroscopic cross-section for rapidly transmitting fluids which are dynamically deposited on said first surface of said web to said second surface of said web using the dynamic and gravitational head of the fluid as a primary driving force, each of said macroscopic cross-section capillary networks originating as an aperture in said first surface of said web and having a continuously interconnected sidewall extending in the direction of said second surface of said web, said continuously interconnected sidewall terminating to form at least one aperture in said second surface of said web, whereby the bulk of said dynamically deposited fluid is transmitted from said first surface to said second surface of said web by said macroscopic cross-section capillary networks, said first surface of said web in which said macroscopic cross-section capillary networks originate further including a multiplicity of fluid-handling capillary networks which are substantially smaller in cross-section than said macroscopic cross-section fluid-handling capillary networks, said smaller fluid-handling capillary networks exhibiting a degree of capillary suction sufficient to transmit static fluid contained on the surface of objects which contact said first surface of said web generally in the direction of said second surface of said web by capillary attraction.
Claim 2
Dependent Claim
231 words
1 A macroscopically expanded, three-dimensional fluid-handling polymeric web having first and second surfaces located in substantially parallel planes which are remote from one another, said web including a multiplicity of fluid-handling capillary networks of macroscopic cross-section for rapidly transmitting fluids which are dynamically deposited on said first surface of said web to said second surface of said web using the dynamic and gravitational head of the fluid as a primary driving force, each of said macroscopic cross-section capillary networks originating as an aperture in said first surface of said web and having a continuously interconnected sidewall extending in the direction of said second surface of said web, said continuously interconnected sidewall terminating to form at least one aperture in said second surface of said web, whereby the bulk of said dynamically deposited fluid is transmitted from said first surface to said second surface of said web by said macroscopic cross-section capillary networks, said first surface of said web in which said macroscopic cross-section capillary networks originate further including a multiplicity of fluid-handling capillary networks which are substantially smaller in cross-section than said macroscopic cross-section fluid-handling capillary networks, said smaller fluid-handling capillary networks exhibiting a degree of capillary suction sufficient to transmit static fluid contained on the surface of objects which contact said first surface of said web generally in the direction of said second surface of said web by capillary attraction.
Claim 3
Dependent Claim
86 words
A web according to claim 1, wherein said substantially parallel planes are separated by a distance of at least 0.178 mτ and wherein each of said macroscopic cross-section capillary networks is defined by a major axis which coincides with the maximum cross-sectional dimension of said network and a minor axis which coincides with the minimum cross-sectional dimension of said network, as measured perpendicular to the axis of said network, and wherein said macroscopic cross-section capillary networks have a minor axis dimension of at least 0.71 mm.
Claim 4
Dependent Claim
70 words
A web according to either one of claims 1 and 2, wherein said smaller cross-section capillary networks originate as an aperture in said first surface of said web and have a continuously interconnected sidewall extending in a direction opposite said second surface of said web, said continuously interconnected sidewall terminating to form at least one aperture in a third surface remote from the first and second surfaces of said web.
Claim 5
Dependent Claim
27 words
A web according to claim 3, wherein said apertures in said third surface of said web from volcano-like cusps which exhibit a soft and silky tactile impression.
Claim 6
Dependent Claim
28 words
A web according to any one of claims 1-4, wherein the perpendicular distance between said first and said second surfaces of said web is at least 0.38 nm.
Claim 7
Dependent Claim
80 words
A web according to any one of claims 1-5, wherein the cross-sectional shape of each of said smaller capillary networks is defined by a major axis which coincides with the maximum cross-sectional dimension of said network and a minor axis which coincides with the minimum cross-sectional dimension of said network, as measured perpendicular to said major axis of said network, and wherein the maximum dimension of said minor axis is less than 0 .5 mm, preferably less than 0.25 nm.
Claim 8
Dependent Claim
20 words
A web according to any one of the preceding claims, wherein said macroscopic cross-section capillary networks are irregular in shape.
Claim 9
Dependent Claim
19 words
A web according to any one of the preceding claims, wherein said smaller capillary networks are of irregular cross-section.
Claim 10
Dependent Claim
21 words
A web according to any one of the preceding claims, wherein said macroscopic cross-section capillary networks are of dissimilar cross-sectional area.
Claim 11
Dependent Claim
20 words
A web according to any one of the preceding claims, wherein said smaller capillary networks are of dissimilar cross-sectional area.
Claim 12
Dependent Claim
34 words
An absorbent bandage comprising an absorbent element having a wearer contacting topsheet secured in superposed relation thereto, said topsheet comprising a macroscopically expanded, three-dimensional fluid-handling polymeric web according to any one of claims 1-10.
Claim 13
Dependent Claim
42 words
An absorbent bandage according to claim 11, wherein said absorbent element exhibits a greater degree of capillary suction than the smaller capillary networks in said topsheet, whereby said static fluid is drawn through said smaller capillary networks and into said absorbent element.
Claim 14
Dependent Claim
22 words
An absorbent bandage according to claim 12, including a moisture-impervious backsheet secured adjacent the surface of said absorbent element opposite said topsheet.
Claim 15
Dependent Claim
238 words
A macroscopically expanded, three-dimensional fluid-handling polymeric web having first and second surfaces located in substantially parallel planes which are remote from one another, said web including a multiplicity of dual purpose fluid-handling capillary networks, said dual purpose capillary networks having a macroscopic cross-section portion for rapidly transmitting fluids which are dynamically deposited on said first surface of said web to said second surface of said web using the dynamic and gravitational head of the fluid as a primary driving force, each of said dual purpose capillary networks originating as an aperture in said first surface of said web and having a continuously interconnected sidewall extending in the direction of said second surface of said web, said continuously interconnected sidewall terminating to form at least one aperture in said second surface of said web, whereby the bulk of said dynamically deposited fluid is transmitted from said first surface to said second surface of said web by said macroscopic cross-section portion of said dual purpose capillary networks, the perimeter of each of said dual purpose capillary networks also including at least one fluid-handling capillary network portion of substantially smaller cross-section than said macroscopic cross-section portion, said smaller fluid-handling capillary network portion exhibiting a degree of capillary suction sufficient to transmit static fluid contained on the surface of objects which contact said first surface of said web generally in the direction of said second surface of said web by capillary attraction.
Claim 16
Dependent Claim
238 words
A macroscopically expanded, three-dimensional fluid-handling polymeric web having first and second surfaces located in substantially parallel planes which are remote from one another, said web including a multiplicity of dual purpose fluid-handling capillary networks, said dual purpose capillary networks having a macroscopic cross-section portion for rapidly transmitting fluids which are dynamically deposited on said first surface of said web to said second surface of said web using the dynamic and gravitational head of the fluid as a primary driving force, each of said dual purpose capillary networks originating as an aperture in said first surface of said web and having a continuously interconnected sidewall extending in the direction of said second surface of said web, said continuously interconnected sidewall terminating to form at least one aperture in said second surface of said web, whereby the bulk of said dynamically deposited fluid is transmitted from said first surface to said second surface of said web by said macroscopic cross-section portion of said dual purpose capillary networks, the perimeter of each of said dual purpose capillary networks also including at least one fluid-handling capillary network portion of substantially smaller cross-section than said macroscopic cross-section portion, said smaller fluid-handling capillary network portion exhibiting a degree of capillary suction sufficient to transmit static fluid contained on the surface of objects which contact said first surface of said web generally in the direction of said second surface of said web by capillary attraction.
Claim 17
Dependent Claim
17 words
A web according to claim 14, wherein said dual purpose capillary networks exhibit a star shaped cross-section.
Claim 18
Dependent Claim
17 words
A web according to claim 14, wherein said dual purpose capillary networks exhibit a snowflake shaped cross-section.
Claim 19
Dependent Claim
17 words
A web according to claim 14, wherein said dual purpose capillary networks exhibit a dogbone shaped cross-section.
Claim 20
Dependent Claim
19 words
A web according to claim 15, wherein the points of said star comprise said smaller fluid-handling capillary network portion.
References Cited (Backward Citations)
No citation records indexed.
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