IP Library Granted Patent US 8,716,549
Granted Patent B2
US 8,716,549 · App. 13/024,858 · Granted May 6, 2014

Absorbent article with bonded web material

Inventors: Calvin Hoi Wung Cheng (Cincinnati, OH); Rajeev Chhabra (Mason, OH); Olaf Erik Alexander Isele (West Chester, OH); DeeAnn Ling Nelson (Mooresville, NC)
Assignee: The Procter & Gamble Company
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Quick Facts
Patent No.
US 8,716,549
App. No.
13/024,858
Granted
May 6, 2014
Kind
B2
Abstract

An absorbent article to be worn the lower torso is provided. The absorbent article comprises a chassis comprising a topsheet, a backsheet, an absorbent core, and a pair of longitudinal barrier cuffs attached to the chassis. Each of the longitudinal barrier cuffs comprises a web of material. The web of material comprises a first nonwoven component layer, and a second nonwoven component layer. Each of the longitudinal barrier cuffs comprises a longitudinal zone of attachment where each of the longitudinal barrier cuff attaches to the chassis, a longitudinal free edge, and a plurality of mechanical bonds disposed between the longitudinal zone of attachment and the free edge. The plurality of mechanical bonds attach one of a first portion of the web of material to a second portion of the web of material, and the web of material to a portion of the absorbent article.

Claims (58)

1. An absorbent article to be worn about the lower torso, the absorbent article comprising:

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

a pair of longitudinal barrier cuffs attached to the chassis, each longitudinal barrier cuff formed of a web of material, the web of material comprising:

a first nonwoven component layer comprising fibers having an average diameter in the range of about 8 microns to about 30 microns; and

a second nonwoven component layer comprising fibers having a number-average diameter of less than 1 micron, a mass-average diameter of less than 1.5 microns, and a ratio of the mass-average diameter to the number-average diameter less than 2;

wherein the web of material has a local basis weight variation less than 10%;

wherein each of the longitudinal barrier cuffs comprises:

a longitudinal zone of attachment where the longitudinal barrier cuff attaches to the chassis;

a longitudinal free edge; and

a plurality of mechanical bonds disposed between the longitudinal zone of attachment and the free edge, wherein the plurality of mechanical bonds attach one of:

a first portion of the web of material to a second portion of the web of material; and

the web of material to a portion of the absorbent article;

wherein each of the plurality of mechanical bonds has an area of less than 4 mm 2 .

2. The absorbent article of claim 1 , wherein each of the pair of longitudinal barrier cuffs comprises an elastic material, and wherein the elastic material is disposed at least partially intermediate the plurality of mechanical bonds and the longitudinal free edge.

3. The absorbent article of claim 1 , wherein the second nonwoven component layer comprises fibers having a number-average diameter of less than 1 micron, a mass-average diameter of less than 1 micron, and a ratio of the mass-average diameter to the number-average diameter less than 1.5.

4. The absorbent article of claim 1 , wherein the web of material has a local basis weight variation less than 7%.

5. The absorbent article of claim 1 , wherein each of the plurality of mechanical bonds has an area less of than 2 mm 2 .

6. The absorbent article of claim 1 , comprising a grommet ring formed around a periphery of each of the plurality of mechanical bonds.

7. The absorbent article of claim 1 , wherein the web of material comprises a third nonwoven component layer comprising fibers having an average diameter in the range of about 8 microns to about 30 microns, and wherein the second nonwoven component layer is disposed intermediate the first nonwoven component layer and the third nonwoven component layer.

8. The absorbent article of claim 1 , wherein the web of material comprises:

a third nonwoven component layer comprising fibers having an average diameter in the range of about 8 microns to about 30 microns; and

a fourth nonwoven component layer comprising fibers having an average diameter in the range of about 1 micron to about 8 microns;

wherein the second and fourth nonwoven component layers are disposed intermediate the first nonwoven component layer and the third nonwoven component layer.

9. The absorbent article of claim 1 , wherein the web of material has an air permeability of at least 20 m 3 /m 2 /min.

10. The absorbent article of claim 1 , wherein the low surface tension fluid strikethrough time of the web of material is at least 19 seconds.

11. The absorbent article of claim 1 , wherein the total basis weight of the web of material is less than 15 gsm, wherein the web of material does not comprise a film, and wherein the web of material has an air permeability of at least 40 m 3 /m 2 /min.

12. An absorbent article to be worn about the lower torso, the absorbent article comprising:

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

a pair of longitudinal barrier cuffs attached to the chassis, each longitudinal barrier cuff comprised of a first layer and a second layer, wherein the a first layer and a second layers have a combined basis weight of less than 30 gsm, and wherein the first and second layers are each a web of material comprising:

a first nonwoven component layer comprising fibers having an average diameter in the range of about 8 microns to about 30 microns; and

a second nonwoven component layer comprising fibers having a number-average diameter of less than 1 micron, a mass-average diameter of less than 1.5 microns, and a ratio of the mass-average diameter to the number-average diameter less than 2;

wherein at least one of the longitudinal barrier cuffs comprises:

a longitudinal zone of attachment where the longitudinal barrier cuff attaches to the chassis;

a longitudinal free edge; and

a plurality of mechanical bonds, wherein the plurality of mechanical bonds attach the first and second layers, and wherein the plurality of mechanical bonds have a defect occurrence rate of less than 0.9%,

wherein each of the plurality of mechanical bonds has an area of less than 4 mm 2 .

13. The absorbent article of claim 12 , wherein the plurality of mechanical bonds are disposed along the longitudinal zone of attachment and have a defect occurrence rate of less than 0.54%, and wherein the first layer and a second layers have a combined basis weight of less than 25 gsm.

14. The absorbent article of claim 12 , wherein the plurality of mechanical bonds attach at least one of the first and second layers to a portion of the absorbent article.

15. The absorbent article of claim 12 , wherein the web of material has:

a local basis weight variation less than 10%;

an air permeability at least 20 m 3 /m 2 /min; and

a low surface tension fluid strikethrough time of at least 19 seconds.

16. An absorbent article to be worn about the lower torso, the absorbent article comprising:

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

a pair of longitudinal barrier cuffs attached to the chassis, each longitudinal barrier cuff formed of a web of material, the web of material comprising:

a first nonwoven component layer comprising fibers having an average diameter in the range of about 8 microns to about 30 microns; and

a second nonwoven component layer comprising fibers having a number-average diameter of less than 1 micron, a mass-average diameter of less than 1.5 microns, and a ratio of the mass-average diameter to the number-average diameter less than 2;

wherein the web of material has a local basis weight variation less than 10%; and

wherein at least one of the longitudinal barrier cuffs comprises:

a zone of attachment where the barrier cuff attaches to the chassis;

a longitudinal free edge; and

a plurality of mechanical bonds disposed between the zone of attachment and the free edge, wherein the plurality of mechanical bonds attach one of a first portion of the web material to a second portion of the web of material and the web of material to a portion of the absorbent article to form a laminate, wherein the laminate of the first portion of the web of material and the second portion of the web of material has a total basis weight less than 25 gsm, and wherein at least most of the plurality of mechanical bonds have a peel strength that is greater than 50% of the tensile strength of the bonded material.

17. The absorbent article of claim 16 , wherein each of the plurality of mechanical bonds has an area less than 2 mm 2 .

18. The absorbent article of claim 16 , wherein each of the plurality of mechanical bonds has an area less than 4 mm 2 .

19. The absorbent article of claim 16 , wherein the web of material has:

a local basis weight variation less than 10%;

an air permeability of at least 20 m 3 /m 2 /min; and

a low surface tension fluid strikethrough time of at least 19 seconds.

Assignments (4)
RELEASE OF SECURITY INTEREST Recorded Nov 5, 2024
From: BANK OF AMERICA, N.A.; UBS AG, STAMFORD BRANCH (AS SUCCESSOR TO CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH)
To: AVINTIV INC.; AVINTIV SPECIALTY MATERIALS, LLC (F/K/A AVINTIV SPECIALTY MATERIALS INC.; F/K/A POLYMER GROUP, INC.); PGI POLYMER, LLC (F/K/A PGI POLYMER, INC.); CHICOPEE, LLC (F/K/A CHICOPEE, INC.)
Reel/Frame 069307/0922 →
SECOND LIEN SECURITY AGREEMENT Recorded Oct 7, 2015
From: AVINTIV INC. (INDIVIDUALLY AND AS SUCCESSOR BY MERGER TO BERRY PLASTICS ACQUISITION CORPORATION IX); PGI POLYMER, INC.; CHICOPEE, INC.
To: U.S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 036799/0627 →
FIRST LIEN SECURITY AGREEMENT Recorded Oct 6, 2015
From: AVINTIV INC. (INDIVIDUALLY AND AS SUCCESSOR BY MERGER TO BERRY PLASTICS ACQUISITION CORPORATION IX); AVINTIV SPECIALTY MATERIALS, INC.; PGI POLYMER, INC.; CHICOPEE, INC.
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS TERM COLLATERAL AGENT; BANK OF AMERICA, N.A., AS ABL COLLATERAL AGENT
Reel/Frame 036788/0041 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 10, 2011
From: CHENG, CALVIN HOI WUNG; CHHABRA, RAJEEV; ISELE, OLAF ERIK ALEXANDER; POLYMER GROUP, INC.; NELSON, DEEANN LING
To: PROCTER & GAMBLE COMPANY, THE; POLYMER GROUP, INC.
Reel/Frame 025953/0827 →
Continuity (2)
Provisional Application 61303187 · Feb 10, 2010
Related Publication 20110196332A1 · Aug 11, 2011