Absorbent article(s) chassis comprising beamed elastics

Patent metadata

Field	Value
Publication number	US-2024293265-A1
Application number	US-202418663163-A
Country	US
Kind code	A1
Filing date	May 14, 2024
Priority date	Dec 20, 2016
Publication date	Sep 5, 2024
Grant date	—

Abstract

The present disclosure relates to absorbent article's chassis that may comprise one or more pluralities of tightly spaced (less than 4 mm, less than 3 mm, less than 2 mm, and less than 1 mm) and/or low decitex (less than 300, less than 200, less than 100 dtex) and/or low strain (less than 300%, less than 200%, less than 100%) elastics to deliver low pressure less than 1 psi (according to the conditions defined by the Pressure-Under-Strand Test in the Method below) under the elastics. The elastics in the chassis may be oriented parallel or transverse to the longitudinal axis.

First claim

What is claimed is:

1 . An extensible article, comprising:
a front waist edge; a back waist edge; a longitudinal axis extending from the midpoint of the front waist edge to the midpoint of the back waist edge; a lateral axis extending perpendicular to the longitudinal axis through the midpoint of the longitudinal axis; a first belt comprising a first elastomeric laminate in a first waist region, the first elastomeric laminate comprising a first plurality of elastics; a second belt comprising a second elastomeric laminate in a second waist region, the second elastomeric laminate comprising a second plurality of elastics, the first belt either permanently or refastenably joined with the second belt; a third elastomeric laminate formed by two substrate layers forming at least a portion of the chassis in a crotch region, the third elastomeric laminate comprising a third plurality of elastics; wherein the first plurality of elastics comprises greater than about 40 elastic strands, and the second plurality of elastics comprises greater than about 40 elastic strands; wherein each of the first plurality of elastics, second plurality of elastics, and third plurality of elastics have an Average-Strand-Spacing from about 0.25 mm to about 4 mm; wherein the Average-Pre-Strain of each of the first plurality of elastics, second plurality of elastics and third plurality of elastics is from about 50% to about 400%; wherein the Average-Dtex of each of the first plurality of elastics, second plurality of elastics, and third plurality of elastics is from about 10 to about 500; wherein the third plurality of elastics has one or more of: a) an Average-Strand-Spacing that is greater than one or both of the first and second plurality of elastics, b) an Average-Dtex that is lower than one or both of the first and second plurality of elastics, c) an Average-Pre-Strain that is lower than one or both of the first and second plurality of elastics, and d) a number of elastics that is lower than one or both of the first and second plurality of elastics; wherein the elastic strands of each of the first plurality of elastics and second plurality of elastics are disposed substantially parallel to the lateral axis; and wherein the elastic strands of the third plurality of elastics is disposed substantially parallel to the longitudinal axis.

2 . The extensible article of claim 1 , wherein the third elastomeric laminate comprises 4 equal sections: a first section, a second section, a third section, and a fourth section, wherein the Sectional-Modulus of the second and/or third sections is lower than the Sectional-Modulus of each of the first and fourth sections.

3 . The extensible article of claim 1 , wherein one or both of the first plurality of elastics and the second plurality of elastics comprise from about 50 to about 1000 elastic strands.

4 . The extensible article of claim 1 , wherein the third plurality of elastics comprise from about 10 to about 400 elastic strands.

5 . The extensible article of claim 1 , wherein at least a portion of one or both of the first plurality of elastics and second plurality of elastics overlap with at least a portion of the third plurality of elastics.

6 . The extensible article of claim 1 , wherein one or more of the first plurality of elastics, the second plurality of elastics and the third plurality of elastics have an Average-Strand-Spacing from about 0.5 mm to about 3.5 mm.

7 . The extensible article of claim 1 , wherein the Average-Dtex of one or more of the first plurality of elastics, the second plurality of elastics and the third plurality of elastics is from about 10 to about 350.

8 . The extensible article of claim 1 , wherein the Average-Pre-Strain of each of the first plurality of elastics, second plurality of elastics and third plurality of elastics is from about 75% to about 300%.

9 . The extensible article of claim 1 , wherein the first plurality of elastics are disposed at least partially in the crotch region and wherein a second plurality of elastics are at least partially disposed in the crotch region, and wherein the first plurality of elastics and the second plurality of elastics are spaced apart from each other.

10 . The extensible article of claim 9 , wherein the third plurality of elastics is disposed between the first and second pluralities of elastics.

11 . An extensible article, comprising:
a front waist edge; a back waist edge; a longitudinal axis extending from the midpoint of the front waist edge to the midpoint of the back waist edge; a lateral axis extending perpendicular to the longitudinal axis through the midpoint of the longitudinal axis; a first belt comprising a first elastomeric laminate in a first waist region, the first elastomeric laminate comprising a first plurality of elastics; a second belt comprising a second elastomeric laminate in a second waist region, the second elastomeric laminate comprising a second plurality of elastics, the first belt either permanently or refastenably joined with the second belt; a third elastomeric laminate formed by two substrate layers forming at least a portion of the chassis in a crotch region, the third elastomeric laminate comprising a third plurality of elastics; wherein the first plurality of elastics comprises greater than about 40 elastic strands, and the second plurality of elastics comprises greater than about 40 elastic strands; wherein each of the first plurality of elastics, second plurality of elastics, and third plurality of elastics have an Average-Strand-Spacing from about 0.25 mm to about 4 mm; wherein the Average-Pre-Strain of each of the first plurality of elastics, second plurality of elastics and third plurality of elastics is from about 50% to about 400%; wherein the Average-Dtex of each of the first plurality of elastics, second plurality of elastics, and third plurality of elastics is from about 10 to about 500; wherein the third plurality of elastics has one or more of: a) an Average-Strand-Spacing that is greater than one or both of the first and second plurality of elastics, b) an Average-Dtex that is lower than one or both of the first and second plurality of elastics, c) an Average-Pre-Strain that is lower than one or both of the first and second plurality of elastics, and d) a number of elastics that is lower than one or both of the first and second plurality of elastics; wherein the elastic strands of each of the first plurality of elastics, second plurality of elastics and third plurality of elastics are disposed substantially parallel to a lateral axis.

12 . The extensible article of claim 11 , wherein the third elastomeric laminate comprises 4 equal sections: a first section, a second section, a third section, and a fourth section, wherein the Sectional-Modulus of the second and/or third sections is lower than the Sectional-Modulus of each of the first and fourth sections.

13 . The extensible article of claim 11 , wherein one or both of the first plurality of elastics and the second plurality of elastics comprise from about 50 to about 1000 elastic strands.

14 . The extensible article of claim 11 , wherein the third plurality of elastics comprise from about 10 to about 400 elastic strands.

15 . The extensible article of claim 11 , wherein at least a portion of one or both of the first plurality of elastics and second plurality of elastics overlap with at least a portion of the third plurality of elastics.

16 . The extensible article of claim 11 , wherein one or more of the first plurality of elastics, the second plurality of elas

Assignees

• Procter & Gamble

Inventors

• Lavon Gary Dean
• Schneider Uwe
• Seitz Bret Darren
• Wade Sarah Marie
• Eckstein Joseph Allen

Classifications

• A61F2013/51322

  being elastomeric or stretchable · CPC title

• A61F13/49061

  the diaper having one or two waist members forming the diaper waist region and an independent absorbent structure attached to the one or two waist members forming the crotch region · CPC title

• B32B37/22

  involving the assembly of both discrete and continuous layers · CPC title

• A61F13/5622

  specially adapted for diapers or the like · CPC title

• D04H3/12

  with filaments or yarns secured together by chemical or thermo-activatable bonding agents, e.g. adhesives, applied or incorporated in liquid or solid form · CPC title