EP0426235A2
Expired / Lapsed
EP
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Sanitary napkin having laterally extensible means for attachment to the undergarment of the wearer
Assignee: Procter and Gamble Co
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Filing: 1990-10-23
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Granted: —
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Expires: 2010-10-23
Abstract
Abstract An improved sanitary napkin is disclosed. The sanitary napkin has a laterally extensible flap which extends outwardly from one of the longitudinal edges of the sanitary napkin or a laterally extensible backsheet. The backsheet or flap may be laterally extended from the neutral, retracted position and will return to the retracted position upon release of the disturbing force. This arrangement provides the advantage that any adhesive strips or patches associated with the flaps or backsheet more easily move with the undergarment of the wearer and are less likely to be stressed or become detached from the undergarment of the wearer due to the forces encountered during typical wearer movements.
Inventors
- 👤 Thomas Ward Osborn Iii
- 👤 Richard George Coe
- 👤 George Stephen Reising
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 16:09
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/47; A61F13/472; A61F13/47218; A61F13/47227; A61F13/476; A61F13/51; A61F13/515; A61F13/56; A61F13/5605; A61F13/5611; A61F13/5616; A61F13/53; A61F13/534; A61F13/53409; A61F13/537; A61F13/514; A61F13/51401; A61F2013/51409; A61F2013/51429; A61F2013/530007; A61F2013/530036; A61F2013/530058; A61F2013/530094; A61F2013/530109; A61F2013/530131; A61F2013/53016; A61F2013/530167; A61F2013/530335; A61F2013/530343; A61F2013/53035; A61F2013/530437; A61F2013/530445; A61F2013/530452; A61F2013/530459; A61F2013/530481; A61F2013/53051; A61F2013/530547; A61F2013/530583; A61F2013/5307; A61F2013/530802; A61F2013/530868; A61F2013/530875; A61F2013/530927; A61F2013/530934; A61F2013/53445; A61F13/53708; A61F2013/53721; A61F2013/53726; A61F13/539; A61F2013/53908; A61F2013/53916; A61F2013/53925; A61F2013/5395; A61F2013/53966; A61F2013/53975; A61F13/58; A61F2013/583; A61F2013/586
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
81 words
A sanitary napkin attachable to an undergarment of a wearer, having mutually orthogonal longitudinal and lateral axes, and two spaced apart longitudinal edges, said sanitary napkin comprising: a liquid pervious topsheet; a liquid impervious backsheet; an absorbent core intermediate said topsheet and said backsheet; and a means for attaching the sanitary napkin to the undergarment of the wearer, said means for attaching the sanitary napkin to the undergarment being joined to a surface which is elastically extensible in the lateral direction.
Claim 2
Dependent Claim
81 words
A sanitary napkin attachable to an undergarment of a wearer, having mutually orthogonal longitudinal and lateral axes, and two spaced apart longitudinal edges, said sanitary napkin comprising: a liquid pervious topsheet; a liquid impervious backsheet; an absorbent core intermediate said topsheet and said backsheet; and a means for attaching the sanitary napkin to the undergarment of the wearer, said means for attaching the sanitary napkin to the undergarment being joined to a surface which is elastically extensible in the lateral direction.
Claim 3
Dependent Claim
57 words
A sanitary napkin having mutually orthogonal longitudinal and lateral axes, and two spaced apart longitudinal edges, said sanitary napkin comprising: a liquid pervious topsheet; a liquid impervious backsheet; an absorbent core intermediate said topsheet and said backsheet; and at least one flap extending outwardly from said sanitary napkin, said flap being elastically extensible in the lateral direction.
Claim 4
Dependent Claim
57 words
A sanitary napkin having mutually orthogonal longitudinal and lateral axes, and two spaced apart longitudinal edges, said sanitary napkin comprising: a liquid pervious topsheet; a liquid impervious backsheet; an absorbent core intermediate said topsheet and said backsheet; and at least one flap extending outwardly from said sanitary napkin, said flap being elastically extensible in the lateral direction.
Claim 5
Dependent Claim
130 words
A sanitary napkin having mutually orthogonal longitudinal and lateral axes, and two spaced apart longitudinal edges, said sanitary napkin comprising: a liquid pervious topsheet; a liquid impervious backsheet; an absorbent core intermediate said topsheet and said backsheet; and at least one flap joined to at least one of said topsheet and said backsheet, said flap having proximal edge where said flap is joined to said at least one of said backsheet and said topsheet, said flap having a distal edge at the portion of said flap furthest from said longitudinal axis, at least a portion of said at least one of said topsheet and said backsheet being elastically extensible in the lateral direction, whereby the distal edge of said flap may be elastically extended laterally outwardly from said longitudlnal axis.
Claim 6
Dependent Claim
130 words
A sanitary napkin having mutually orthogonal longitudinal and lateral axes, and two spaced apart longitudinal edges, said sanitary napkin comprising: a liquid pervious topsheet; a liquid impervious backsheet; an absorbent core intermediate said topsheet and said backsheet; and at least one flap joined to at least one of said topsheet and said backsheet, said flap having proximal edge where said flap is joined to said at least one of said backsheet and said topsheet, said flap having a distal edge at the portion of said flap furthest from said longitudinal axis, at least a portion of said at least one of said topsheet and said backsheet being elastically extensible in the lateral direction, whereby the distal edge of said flap may be elastically extended laterally outwardly from said longitudlnal axis.
Claim 7
Dependent Claim
173 words
A sanitary napkin having mutually orthogonal longitudinal and lateral axes, and two spaced apart longitudinal edges, said sanitary napkin comprising: a liquid pervious topsheet; a liquid impervious backsheet; an absorbent core intermediate said topsheet and said backsheet; at least one flap joined to at least one of said topsheet and said backsheet, said flap having a proximal edge where said flap is joined to said at least one of said backsheet and said topsheet; a longitudinally oriented pleat joining the proximal edge of said pleat to said central portion; and at least one spring having a laterally oriented vector component spanning said pleat, characterized in that said flap is elastically extensible in the lateral direction, preferably characterized in that said laterally oriented spring is a generally linear elastic strand having two ends, one said end joined to said flap and the other said end joined to a portion of said sanitary napkin laterally inboard of said flap, and more preferably characterized in that said spring has an orientation generally parallel said lateral axis.
Claim 8
Dependent Claim
173 words
A sanitary napkin having mutually orthogonal longitudinal and lateral axes, and two spaced apart longitudinal edges, said sanitary napkin comprising: a liquid pervious topsheet; a liquid impervious backsheet; an absorbent core intermediate said topsheet and said backsheet; at least one flap joined to at least one of said topsheet and said backsheet, said flap having a proximal edge where said flap is joined to said at least one of said backsheet and said topsheet; a longitudinally oriented pleat joining the proximal edge of said pleat to said central portion; and at least one spring having a laterally oriented vector component spanning said pleat, characterized in that said flap is elastically extensible in the lateral direction, preferably characterized in that said laterally oriented spring is a generally linear elastic strand having two ends, one said end joined to said flap and the other said end joined to a portion of said sanitary napkin laterally inboard of said flap, and more preferably characterized in that said spring has an orientation generally parallel said lateral axis.
Claim 9
Dependent Claim
141 words
A sanitary napkin attachable to an undergarment of a wearer, and having mutually orthogonal longitudinal and lateral axes, said sanitary napkin comprising: a liquid pervious topsheet; a backsheet, at least a portion of said backsheet being elastically extensible in the lateral direction; an absorbent core intermediate said topsheet and said backsheet; and a means for attaching said backsheet to the undergarment of the wearer, said means for attaching said backsheet being laterally offset from the longitudinal axis, said sanitary napkin being preferably characterized in that said means for joining said sanitary napkin to the undergarment of the wearer comprises two strips of adhesive, one said strip of adhesive disposed on each side of the longitudinal axis and at least one said strip of adhesive being disposed within a portion of said backsheet which is elastically laterally extendable from the longitudinal axis.
Claim 10
Dependent Claim
141 words
A sanitary napkin attachable to an undergarment of a wearer, and having mutually orthogonal longitudinal and lateral axes, said sanitary napkin comprising: a liquid pervious topsheet; a backsheet, at least a portion of said backsheet being elastically extensible in the lateral direction; an absorbent core intermediate said topsheet and said backsheet; and a means for attaching said backsheet to the undergarment of the wearer, said means for attaching said backsheet being laterally offset from the longitudinal axis, said sanitary napkin being preferably characterized in that said means for joining said sanitary napkin to the undergarment of the wearer comprises two strips of adhesive, one said strip of adhesive disposed on each side of the longitudinal axis and at least one said strip of adhesive being disposed within a portion of said backsheet which is elastically laterally extendable from the longitudinal axis.
Claim 11
Dependent Claim
57 words
A sanitary napkin according to Claim 3 having two flaps, one joined to each said longitudinal edge, and a central portion intermediate said proximal ends of flaps, wherein said at least one of said topsheet and said backsheet is made from a material elastically extensible in the lateral direction substantially throughout the width of said central portion.
Claim 12
Dependent Claim
21 words
A sanitary napkin according to Claims 2 and 3 characterized in that said flap is elastically extensible in the longitudinal direction.
Claim 13
Dependent Claim
19 words
A sanitary napkin according to Claim 4 characterized in that said backsheet is elastically extensible in the longitudinal direction.
Claim 14
Dependent Claim
95 words
A sanitary napkin according to Claims 1, 2, 3, 4, and 5 characterized in that said sanitary napkin has a resultant tensile force of not more than 900 grams at 15 percent lateral extension and recovers to within 5 percent of the original gage length, and more preferably characterized in that said resultant force is at least 25 grams and not more than 750 grams at 15 percent lateral extension, and most preferably characterized in that said resultant force is at least 25 grams and not more than 500 grams at 16 percent lateral extension.
Claim 15
Dependent Claim
28 words
A sanitary napkin according to Claims 2, 3 and 4 characterized in that the distal end of said flap is elastically laterally extensible at least about 0.5 centimeter.
References Cited (Backward Citations)
No citation records indexed.
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