US5023124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbent article
Assignee: Kao Corp
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Filing: 1990-08-21
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Granted: 1991-06-11
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Expires: 2010-08-21
Abstract
Abstract An absorbent article comprising a surface material, a liquid-impermeable backing material and an absorbent located therebetween, wherein said surface material comprises a liquid-retentive structure body with a three-dimensional skeleton structure having an average interskeleton distance of from 150 to 700 μm and a hydrophobic film being integrally provided with the liquid-retentive structure body so as to form a skin-contact face, and have openings penetrating through the liquid-retentive structure body and the hydrophobic film is disclosed. An absorbent article comprising an absorbent and the above-mentioned surface material is also disclosed. The absorbent article of the present invention may be processed into, for example, a sanitary napkin which can rapidly introduce a liquid into the absorbent via the openings, shows no turn back of the absorbed liquid toward the body even under the application of pressure, gives an excellent feel at use, maintains a dryness on the surface and can completely inhibit leakage of the liquid.
Inventors
- 👤 Takatoshi Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:46
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/512; A61F13/513; A61F13/51305; A61F13/5116; A61F13/53; A61F13/531; A61F13/15203; A61F2013/15284; A61F2013/15357; A61F2013/51059; A61F2013/51061; A61F2013/51078; A61F13/51121; A61F2013/5113; A61F2013/51152; A61F2013/51165; A61F2013/5127; A61F2013/51355; A61F13/514; A61F13/51474; A61F13/51478; A61F2013/51482; A61F2013/530007; A61F2013/530481; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/23; Y10T428/239; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/249921; Y10T428/249953; Y10T428/249981
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
81 words
An absorbent article comprising: a surface material; a liquid-impermeable backing material; and an absorbent being located between the surface material and the backing material, wherein the surface material comprises: (A) a liquid-retentive structure body with a three-dimensional skeleton structure having an average interskeleton distance of from 150 to 700 μm; (B) a hydrophobic film being integrally provided with said liquid-retentive body so as to form a skin-contact face; and (C) openings penetrating through said liquid-retentive structure body and said hydrophobic film.
Claim 2
Dependent Claim
81 words
An absorbent article comprising: a surface material; a liquid-impermeable backing material; and an absorbent being located between the surface material and the backing material, wherein the surface material comprises: (A) a liquid-retentive structure body with a three-dimensional skeleton structure having an average interskeleton distance of from 150 to 700 μm; (B) a hydrophobic film being integrally provided with said liquid-retentive body so as to form a skin-contact face; and (C) openings penetrating through said liquid-retentive structure body and said hydrophobic film.
Claim 3
Dependent Claim
32 words
An absorbent article as claimed in claim 1, wherein said surface material has an absorbing face, sides and a back face, and said openings (C) are exclusively provided at the absorbing face.
Claim 4
Dependent Claim
27 words
An absorbent article as claimed in claim 2, wherein said hydrophobic film is provided concaves at the absorbing face and said openings are located in said concaves.
Claim 5
Dependent Claim
21 words
An absorbent article as claimed in claim 1, wherein said surface material is wound around the absorbent and the backing material.
Claim 6
Dependent Claim
27 words
An absorbent article as claimed in claim 1, wherein said liquid-retentive structure body has open cells and said open cells are connected each other through penetrating pores.
Claim 7
Dependent Claim
22 words
An absorbent article as claimed in claim 5, wherein an open cell rate of said liquid-retentive structure body is 40% or above.
Claim 8
Dependent Claim
22 words
An absorbent article as claimed in claim 5, wherein an average diameter of said penetrating pores is from 20 to 200 μm.
Claim 9
Dependent Claim
28 words
An absorbent article as claimed in claim 1, wherein a compression stress at 50% deformation of said liquid-retentive structure body is from 10 to 200 g/cm 2 .
Claim 10
Dependent Claim
18 words
An absorbent article as claimed in claim 1, wherein the surface of said liquid-retentive structure body is hydrophilic.
Claim 11
Dependent Claim
73 words
An absorbent article comprising: an absorbent; and a surface material being wound around the absorbent; wherein said surface material comprises: (A) a liquid-retentive structure body with a three-dimensional skeleton structure having an average interskeleton distance of from 150 to 700 μm; (B) a hydrophobic film being integrally provided with said liquid-retentive structure body so as to form a skin-contact face; and (C) openings penetrating through said liquid retentive-structure body and said hydrophobic film.
Claim 12
Dependent Claim
73 words
An absorbent article comprising: an absorbent; and a surface material being wound around the absorbent; wherein said surface material comprises: (A) a liquid-retentive structure body with a three-dimensional skeleton structure having an average interskeleton distance of from 150 to 700 μm; (B) a hydrophobic film being integrally provided with said liquid-retentive structure body so as to form a skin-contact face; and (C) openings penetrating through said liquid retentive-structure body and said hydrophobic film.
Claim 13
Dependent Claim
31 words
An absorbent article as claimed in claim 10, wherein said surface material has an absorbing face, sides and a back face, and said openings are exclusively provided at the absorbing face.
Claim 14
Dependent Claim
27 words
An absorbent article as claimed in claim 11, wherein said hydrophobic film is provided concaves at the absorbing face and said openings are located in said concaves.
Claim 15
Dependent Claim
27 words
An absorbent article as claimed in claim 10, wherein said liquid-retentive structure body has open cells and said open cells are connected each other through penetrating pores.
Claim 16
Dependent Claim
22 words
An absorbent article as claimed in claim 13, wherein an open cell rate of said liquid-retentive structure body is 40% or above.
Claim 17
Dependent Claim
22 words
An absorbent article as claimed in claim 13, wherein an average diameter of said penetrating pores is from 20 to 200 μm.
Claim 18
Dependent Claim
28 words
An absorbent article as claimed in claim 10, wherein a compression stress at 50% deformation of said liquid-retentive structure body is from 10 to 200 g/cm 2 .
Claim 19
Dependent Claim
16 words
An absorbent article as claimed in claim 10, wherein said liquid-retentive structure body has hydrophilic surface.
Claim 20
Dependent Claim
31 words
An absorbent article as claimed in claim 10, wherein said absorbent is a liquid-retentive structure with a three-dimensional skeleton structure and have an average interskeleton structure of 50 to 700 μm.
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) | 1994-06-10 | 1994-12-10 | 1995-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-10 | 1998-12-10 | 1999-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-10 | 2002-12-10 | 2003-06-11 | $7700.00 | Window Closed / Lapsed |