Granted Patent B2

US 12,274,607 · App. 17/884,913 · Granted Apr 15, 2025

Inventors: Marcus Schonbeck (Versmold, DE); Henner Sollmann (Gronau, DE); Georg Baldauf (Laer, DE); Urmish Popatlal Dalal (Milford, OH); Miguel Alberto Herrera (Loveland, OH); Erica Lynne Locke (Cincinnati, OH)

Assignee: The Procter & Gamble Company

A61F13/4902A61F13/15203A61F13/15699A61F13/49015A61F13/49019A61L15/24A61F2013/49022A61F2013/49023

Abstract

Claims (38)

1. An absorbent article comprising:

i) a chassis comprising a topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet; and

ii) at least one elastically elongatable panel joined to the chassis, wherein the elastically elongatable panel comprises a stretch laminate comprising:

a. at least one cover layer;

b. an elastomeric film attached to the cover layer, the elastomeric film having two surfaces and a skin on at least one of the surfaces; and

wherein the elastomeric film is attached to the cover layer by ultrasonic bonding;

wherein the stretch laminate has at least one anchoring zone and at least one stretch zone; wherein the stretch zone of the stretch laminate is elastically extensible along a stretch direction;

wherein the anchoring zone of the stretch laminate is attached to the chassis or a fastener; and

wherein the skin of the elastomeric film that is located in the anchoring zone has a plurality of wrinkles and the wrinkles have furrows.

2. The absorbent article of claim 1 , wherein the elastomeric film comprises a polyolefin elastomer.

3. The absorbent article of claim 2 , wherein the polyolefin elastomer is a propylene based homopolymer or co-polymer, or ethylene based homopolymer or co-polymer selected from the group consisting of: an elastic random poly(propylene/olefin) copolymer, an isotactic polypropylene containing stereoerrors, an isotactic/atactic polypropylene block copolymer, an isotactic polypropylene/random poly(propylene/olefin) copolymer block copolymer, a stereoblock elastomeric polypropylene, a syndiotactic polypropylene block poly(ethylene-co-propylene) block syndiotactic polypropylene tri-block copolymer, an isotactic polypropylene block region-irregular polypropylene block isotactic polypropylene tri-block copolymer, a polyethylene random (ethylene/olefin) copolymer block copolymer, a reactor blend polypropylene, a very low density polypropylene, a metallocene polypropylene, metallocene polyethylene, and combinations thereof.

4. The absorbent article of claim 1 , wherein the elastomeric film is a blown film.

5. The absorbent article of claim 1 , wherein the elastomeric film is between about 20 μm and about 60 μm thick.

6. The absorbent article of claim 5 , wherein the elastomeric film is about 40 μm thick.

7. The absorbent article of claim 1 , wherein the skin comprises a polyolefin selected from the group consisting of: metallocene polyethylene, low density polyethylene, high density polyethylene, linear low density polyethylene, very low density polyethylene, a polypropylene homopolymer, a plastic random poly(propylene/olefin) copolymer, syndiotactic polypropylene, metallocene polypropylene, polybutene, an impact copolymer, a polyolefin wax, and combinations thereof.

8. The absorbent article of claim 1 , wherein the elastomeric film is attached to the cover layer with a peel force, as measured by the T-Peel Test, of 0.5N or more.

9. The absorbent article of claim 1 , wherein the elastomeric film has a % set, as measured by the Hysteresis Test, of 30% or more.

10. The absorbent article of claim 1 , wherein the absorbent article is a diaper.

11. An absorbent article comprising:

i) a chassis comprising a topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet; and

ii) at least one elastically elongatable panel joined to the chassis, wherein the elastically elongatable panel comprises a stretch laminate comprising:

a. a first cover layer;

b. a second cover layer; and

c. an elastomeric film disposed between the first cover layer and the second cover layer, the elastomeric film having a first skin on a first surface closest to the first cover layer and a second skin on a second surface closest to the second cover layer;

wherein the elastomeric film is attached to the first cover layer by ultrasonic bonding and attached to the second cover layer by ultrasonic bonding;

wherein the stretch laminate has at least one anchoring zone and at least one stretch zone; wherein the stretch zone of the stretch laminate is elastically extensible along a stretch direction;

wherein the anchoring zone of the stretch laminate is attached to the chassis or a fastener;

wherein the first skin and the second skin of the elastomeric film that are located in the anchoring zone each have a plurality of wrinkles;

wherein the wrinkles have furrows.

12. The absorbent article of claim 11 , wherein the elastomeric film comprises a polyolefin elastomer.

13. The absorbent article of claim 12 , wherein the polyolefin elastomer is a propylene based homopolymer or co-polymer, or ethylene based homopolymer or co-polymer selected from the group consisting of: an elastic random poly(propylene/olefin) copolymer, an isotactic polypropylene containing stereoerrors, an isotactic/atactic polypropylene block copolymer, an isotactic polypropylene/random poly(propylene/olefin) copolymer block copolymer, a stereoblock elastomeric polypropylene, a syndiotactic polypropylene block poly(ethylene-co-propylene) block syndiotactic polypropylene tri-block copolymer, an isotactic polypropylene block region-irregular polypropylene block isotactic polypropylene tri-block copolymer, a polyethylene random (ethylene/olefin) copolymer block copolymer, a reactor blend polypropylene, a very low density polypropylene, a metallocene polypropylene, metallocene polyethylene, and combinations thereof.

14. The absorbent article of claim 11 , wherein the elastomeric film is a blown film.

15. The absorbent article of claim 11 , wherein the elastomeric film is between about 20 μm and about 60 μm thick.

16. The absorbent article of claim 15 , wherein the elastomeric film is about 40 μm thick.

17. The absorbent article of claim 11 , wherein the first skin and second skin comprise a polyolefin selected from the group consisting of: metallocene polyethylene, low density polyethylene, high density polyethylene, linear low density polyethylene, very low density polyethylene, a polypropylene homopolymer, a plastic random poly(propylene/olefin) copolymer, syndiotactic polypropylene, metallocene polypropylene, polybutene, an impact copolymer, a polyolefin wax, and combinations thereof.

18. The absorbent article of claim 11 , wherein the elastomeric film is attached to the cover layer with a peel force, as measured by the T-Peel Test, of 0.5N or more.

19. The absorbent article of claim 11 , wherein the elastomeric film has a % set, as measured by the Hysteresis Test, of 30% or more.

20. The absorbent article of claim 11 , wherein the absorbent article is a diaper.

Continuity (6)

References Cited (400)