Bond pattern

Patent metadata

Field	Value
Publication number	US-2023233384-A1
Application number	US-202318191947-A
Country	US
Kind code	A1
Filing date	Mar 29, 2023
Priority date	Mar 20, 2018
Publication date	Jul 27, 2023
Grant date	—

Abstract

A composite includes a first substrate and a second substrate joined in a bonding region, wherein the first substrate comprises a first Peak Force Tensile Strength and the second Peak Force Tensile Strength. The first Peak Force Tensile Strength is greater than or equal to the second Peak Force Tensile Strength. The bonding region has a Bond Density of about 10% to about 22%; and a Composite Tensile Strength at Peak Force that is within about 15% of the second Peak Force Tensile Strength.

First claim

What is claimed is:

1 . An absorbent article comprising:
a topsheet, a backsheet, and absorbent core disposed between the topsheet and backsheet; a waist feature comprising a first substrate and a second substrate joined in a bonding region, wherein the first substrate comprises a first Average Peak Force Tensile Strength and the second substrate has a second Average Peak Force Tensile Strength, wherein the first Average Peak Force Tensile Strength is greater than the second Average Peak Force Tensile Strength, and wherein the bonding region comprises:
a plurality of discrete bonds disposed in a pattern, wherein the pattern has a repeat unit comprising from about 5 bonds to about 15 bonds; and
a Bond Density of about 10% to about 22%,
and wherein the waist feature comprises an Average Composite Tensile Strength that is within about 15% of the second Average Peak Force Tensile Strength.

2 . The absorbent article of claim 1 , wherein the plurality of discrete bonds comprises a plurality of mechanical bonds.

3 . The absorbent article of claim 2 , wherein the bonding region comprises adhesive bonding.

4 . The absorbent article of claim 1 , wherein the bonding region comprises discrete bonds oriented off-axis.

5 . The absorbent article of claim 1 , wherein the bonding region comprises a Discrete Bond Size Ratio of not more than about 7.

6 . The absorbent article of claim 1 , wherein a majority of the discrete bonds comprise a major dimension of less than 3.5 mm.

7 . The absorbent article of claim 1 , wherein the bonding region comprises a Minimum Bond Spacing of about 0.9 mm or greater.

8 . The absorbent article of claim 1 , wherein the bonding region comprises at least one of a longitudinally interlocking bond pattern and a laterally interlocking bond pattern.

9 . The absorbent article of claim 1 , wherein the plurality of discrete bonds comprise bonds having different sizes.

10 . The absorbent article of claim 1 , wherein the bond region comprises a Minimum Discrete Bond Area Ratio of from about 20 to about 105.

11 . The absorbent article of claim 1 , wherein the bond region comprises a Maximum Discrete Bond Area Ratio of from about 8 to about 25.

12 . The absorbent article of claim 1 , wherein the plurality of discrete bonds comprises one or more bonds having a major dimension of 3.5 mm or greater.

13 . The absorbent article of claim 1 , wherein the bonding region comprises a Ratio of Larger to Smaller Bonds of 2 or less.

14 . An absorbent article comprising:
a topsheet, a backsheet, and absorbent core disposed between the topsheet and backsheet; an ear comprising a first substrate and a second substrate joined in a bonding region, wherein the first substrate comprises a first Average Peak Force Tensile Strength and the second substrate has a second Average Peak Force Tensile Strength, wherein the first Average Peak Force Tensile Strength is greater than the second Average Peak Force Tensile Strength, and wherein the bonding region comprises:
a plurality of discrete bonds disposed in a pattern, wherein the pattern has a repeat unit comprising from about 5 bonds to about 15 bonds; and
a Bond Density of about 10% to about 22%,
and wherein the ear comprises an Average Composite Tensile Strength that is within about 15% of the second Average Peak Force Tensile Strength.

15 . The absorbent article of claim 14 , wherein the bonding region comprises an Average Longitudinal Peel Strength of about 1.0 N or greater.

16 . The absorbent article of claim 14 , wherein the bonding region comprises adhesive bonds and the Average Longitudinal Peel Strength is about 4.0 N or greater.

17 . The absorbent article of claim 14 , wherein the bonding region comprises an Average Lateral Peak Peel Strength of at least about 1.75 N/cm.

18 . The absorbent article of claim 14 , wherein the bonding region comprises bonds oriented off-axis.

19 . The absorbent article of claim 14 , wherein the bonding region comprises at least one of a longitudinally interlocking bond pattern and a laterally interlocking bond pattern.

20 . An absorbent article comprising:
a composite comprising at least one of an ear, a leg cuff, a waist feature, and a chassis, wherein the composite comprises a first substrate and a second substrate joined in a bonding region, wherein the first substrate comprises a first Average Peak Force Tensile Strength and the second substrate has a second Average Peak Force Tensile Strength, wherein the first Average Peak Force Tensile Strength is greater than the second Average Peak Force Tensile Strength, and wherein the bonding region comprises:
a plurality of discrete bonds disposed in a pattern, wherein the pattern has a repeat unit comprising from about 5 bonds to about 15 bonds; and
a Bond Density of about 10% to about 22%,
and wherein the composite comprises an Average Composite Tensile Strength that is within about 15% of the second Average Peak Force Tensile Strength.

Assignees

• Procter & Gamble

Inventors

• Dria Ray Dennis
• Page Michael Joseph
• Grolmes Joseph Leslie
• King Scott Alan
• Ritter Matthew Steven
• Arp Christopher Colin

Classifications

• A61F13/515 Primary

  characterised by the interconnection of the topsheet and the backsheet · CPC title

• A61F13/511

  Topsheet, i.e. the permeable cover or layer facing the skin · CPC title

• A61F13/514

  Backsheet, i.e. the impermeable cover or layer furthest from the skin {(A61F13/15211, A61F13/15252 take precedence)} · CPC title

• A61F13/55115

  characterized by the features before use, e.g. how are the diapers folded or arranged in a package · CPC title

• A61F13/53

  characterised by the absorbing medium (A61F13/20 takes precedence) · CPC title