CA2593596A1

CA2593596A1 - Absorbent articles comprising a slow recovery stretch laminate

Info

Publication number: CA2593596A1
Application number: CA 2593596
Authority: CA
Inventors: Robin Lynn Mckiernan; Bryn Hird; Edward Joseph Urankar; Janet Neton
Original assignee: The Procter & Gamble Company; Robin Lynn Mckiernan; Bryn Hird; Edward Joseph Urankar; Janet Neton
Current assignee: Procter and Gamble Co
Priority date: 2005-01-10
Filing date: 2005-08-26
Publication date: 2006-07-20
Anticipated expiration: 2025-08-26
Also published as: WO2006076052A1; JP5107450B2; MX2007007995A; CA2593596C; AR054323A1; JP2011156388A; JP2008526358A; US20050273071A1; EP1835874A1; US7905872B2

Abstract

An absorbent article may comprise a topsheet, a backsheet joined with the topsheet, an absorbent core interposed between the topsheet and backsheet; and one or more article elements selected from the group consisting of an anal cuff, an elasticized topsheet, a fastening system, a leg cuff, a waist elastic feature, a side panel, an ear, and combinations thereof. The article elements may comprise a slow recovery stretch laminate exhibiting an unload force at 37 ~C of about 0.16N/(g/m) or greater and a percent of initial strain after 15 seconds of recovery at 22 ~C of about 10% or greater.

Claims

1. An absorbent article comprising:
a) ~a topsheet;
b) ~a backsheet joined with the topsheet;
c) ~an absorbent core interposed between the topsheet and backsheet;
wherein said absorbent article is characterized in that it further comprises d) ~an article element selected from the group consisting of an anal cuff, an elasticized topsheet, a fastening system, a leg cuff, a waist elastic feature, a side panel, an ear, and combinations thereof;
wherein said article element comprises a slow recovery stretch laminate exhibiting an unload force at 37 °C of about 0.16 N/(g/m) or greater and a percent of initial strain after 15 seconds of recovery at 22 °C of about 10% or greater;
preferably, about 20%
or greater; or more preferably, about 30% or greater.

2. The absorbent article of any of the preceding claims wherein the slow recovery stretch laminate exhibits a percent of initial strain after 15 seconds of recovery at 32 °C, wherein the difference of the percent of initial strain after 15 seconds of recovery at 22°C and the percent of initial strain after 15 second of recovery at 32 °C
is greater than or equal to about 5%.

3. The absorbent article of any of the preceding claims wherein the slow recovery stretch laminate comprises a) ~at least a first substrate having a first surface and a second surface b) ~at least one elastic member joined to the first surface of the substrate.

4. The absorbent article of Claim 3 wherein the slow recovery stretch laminate further comprises a second substrate having a first surface and a second surface, wherein the elastic member is joined to the first surface of the second substrate such that the elastic member is disposed between the first substrate and the second substrate.

5. The absorbent article of Claim 3-4 wherein the elastic member comprises a) ~about 20% to about 100% of at least one elastomeric polymer, b) ~optionally, about 0.0 1% to about 60% of at least one modifying resin; and c) ~optionally, about 0.01% to about 60% of at least one additive.

6. The absorbent article of Claim 5 wherein the elastomeric polymer is selected from the group consisting of styrenic block copolymers, natural and synthetic rubbers, polyisoprene, neoprene, polyurethanes, silicone rubbers, hydrocarbon elastomers, ionomers, and combinations thereof.

7. The absorbent article of Claim 5 wherein the modifying resin is selected from the group consisting of unhydrogenated C5 hydrocarbon resins or C9 hydrocarbon resins, partially and fully hydrogenated C5 hydrocarbon resins or C9 hydrocarbon resins; cycloaliphatic resins; terpene resins; polystyrene and styrene oligomers;
poly(t-butylstyrene) or oligomers thereof; rosin and rosin derivatives;
coumarone indenes; polycyclopentadiene and oligomers thereof; polymethylstyrene or oligomers thereof; phenolic resins; indene polymers, oligomers and copolymers; acrylate and methacrylate oligomers, polymers, or copolymers; derivatives thereof; and combinations thereof.

8. The absorbent article of any of the preceding claims wherein the elastic member is in a form selected from the group consisting of a film, a strand, a band, a cross-hatch array, a foam, and combinations thereof.

9. The absorbent article of Claims 3-8 wherein the first substrate is selected from the group consisting of nonwoven webs, woven webs, knitted fabrics, films, film laminates, apertured films, nonwoven laminates, sponges, foams, scrims, and combinations thereof.

11. The absorbent article of Claims 3-9 wherein the absorbent article is selected from the group comprising diapers, training pants, pull-on garments, refastenable pants, adult incontinence products, or feminine care products.

NOTE - In the US case, a set of claims was presented toward the laminate structure apart from the absorbent article. If slow recovery laminates become a commercial reality, it may be advisable to file a divisional or continuation with the following claim.

A slow recovery stretch laminate comprising a) ~at least a first substrate having a first surface and a second surface, and b) ~at least one elastic member joined to the first surface of the substrate;
wherein the slow recovery stretch laminate exhibits an unload force at 37 °C of about 0.16N/(g/m) or greater and a percent of initial strain after 15 seconds of recovery at 22 °C of about 10% or greater.