Beamed elastic laminate properties

Patent metadata

Field	Value
Publication number	US-2024415703-A1
Application number	US-202418815968-A
Country	US
Kind code	A1
Filing date	Aug 27, 2024
Priority date	Dec 20, 2016
Publication date	Dec 19, 2024
Grant date	—

Abstract

The present disclosure relates to one or a combination of an absorbent article's chassis, inner leg cuffs, outer leg cuffs, ear panels, side panels, waistbands, and belts that may comprise one or more pluralities of tightly spaced and/or low Average-Dtex and/or low Average-Pre-Strain elastics to deliver low Pressure Under Strand, while providing adequate Section-Modulus to make the article easy to apply and to comfortably maintain the article in place on the wearer, even with a loaded core, to provide for the advantages described above. Further, the elastomeric laminates of the present disclosure outperform existing laminates currently used for disposable absorbent articles as it relates to one or more key parameters (including Percent Contact Area, 2-98% Height Value, Pressure-Under-Strand, Air Permeability, Water Vapor Transmission Rate, Caliper, Caliper Retention Value, Cantilever Bending, Open Area, Section-Modulus, Rugosity Wavelength, Rugosity Frequency, Graphic Distortion Ratio).

First claim

What is claimed is:

1 . An absorbent article, comprising:
a chassis comprising a topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet; an elastomeric laminate forming at least a portion of an article component selected from the group consisting of a belt, waistband, waistcap, inner leg cuff, outer leg cuff, a transverse barrier, and combinations thereof; wherein the elastomeric laminate comprising a first substrate layer and a second substrate layer and a plurality of elastics disposed between the first substrate layer and the second substrate layer; wherein the plurality of elastics comprises from about 10 to about 400 elastic strands, an Average-Strand-Spacing from about 0.25 mm to about 4 mm, an Average-Dtex from about 10 to about 500, and an Average-Pre-Strain from about 50% to about 400%; at least one of the first substrate layer and second substrate layer comprising a Basis Weight of less than about 30 grams per square meter; wherein the elastomeric laminate has a 2%-98% Height Value of <3.0 mm.

2 . The absorbent article of claim 1 , wherein the plurality of elastics comprises from about 20 to about 225 elastic strands.

3 . The absorbent article of claim 1 , wherein the plurality of elastics comprises an Average-Strand-Spacing from about 0.5 mm to about 3.0 mm.

4 . The absorbent article of claim 1 , wherein the plurality of elastics comprises an Average-Dtex from about 30 to about 400.

5 . The absorbent article of claim 1 , wherein the plurality of elastics comprises an Average-Pre-Strain from about 75% to about 300%.

6 . The absorbent article of claim 1 , wherein the elastomeric laminate has an Average Pressure Under Strand from about 0.1 psi to about 1 psi.

7 . The absorbent article of claim 1 , wherein the elastomeric laminate has an Air Permeability of at least one of: a) greater than about 40 cubic meters/square meter/minute Air Permeability at 0 gf/mm (no extension); b) greater than about 60 cubic meters/square meter/minute Air Permeability at 3 gf/mm (slight extension); and c) greater than about 80 cubic meters/square meter/minute Air Permeability at 7 gf/mm (moderate extension).

8 . The absorbent article of claim 1 , wherein the elastomeric laminate has a Water Vapor Transmission Rate of greater than 4000 g/m2/24 hrs.

9 . The absorbent article of claim 1 , wherein the elastomeric laminate has a Caliper of at least one of: a) from about 0.5 mm to about 4 mm Caliper at 0 gf/mm (no extension); b) from about 60% to about 95% Caliper Retention Value at 3 gf/mm (slight extension); and c) from about 40% to about 90% Caliper Retention Value at 7 gf/mm (moderate extension).

10 . The absorbent article of claim 1 , wherein the elastomeric laminate has a Cantilever Bending of less than about 40 mm.

11 . The absorbent article of claim 2 , wherein the elastomeric laminate has a Rugosity Frequency of from about 0.2 mm −1 to about 1 mm −1 and a Rugosity Wavelength of from about 0.5 mm to about 5 mm.

12 . The absorbent article of claim 1 , wherein the plurality of elastics comprises from about 30 to about 400 elastic strands.

13 . The absorbent article of claim 1 , wherein the each of the elastic strand comprises a plurality of individual fibers.

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