Elastomeric laminate(s) for absorbent article donning

Patent metadata

Field	Value
Publication number	US-11944523-B2
Application number	US-201715846371-A
Country	US
Kind code	B2
Filing date	Dec 19, 2017
Priority date	Dec 20, 2016
Publication date	Apr 2, 2024
Grant date	Apr 2, 2024

Abstract

The present disclosure relates to absorbent articles comprising belts comprising 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, while providing adequate modulus of (between about 2 gf/mm and 15 gf/mm), resulting in a Donning-Ratio from about 1.0 and about 3 to make the article easy to apply and to comfortably maintain the article in place on the wearer.

First claim

The invention claimed is:

1. A package comprising absorbent articles, comprising:
a package material containing a plurality of absorbent articles;
each absorbent article of the plurality absorbent articles, comprising an Average Targeted Weight and:
a chassis comprising a topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet, wherein the chassis comprises a front end edge and a back end edge;
a back belt disposed in a back waist region overlapping and extending outboard of a back waist region of the chassis;
a front belt disposed in a front waist region overlapping and extending outboard of a front waist region of the chassis;
a longitudinal axis;
a lateral axis;
wherein the back belt comprises a first plurality of elastics comprising greater than about 40 elastic strands, and wherein the front belt comprises a second plurality of elastics comprising greater than about 40 elastic strands;
wherein the first plurality of elastics has an Average-Strand-Spacing of less than 4 mm, and wherein the second plurality of elastics has an Average-Strand-Spacing of less than 4 mm;
wherein the back belt is divided into 4 equal sections, wherein Section 4 comprises a proximal end edge of the back belt, Section 1 comprises a distal end edge of the back belt, Section 2 is proximate to Section 1 and Section 3 is proximate to Section 4;
wherein the front belt is divided into 4 equal sections, wherein Section 4 comprises a proximal end edge of the front belt, Section 1 comprises a distal end edge of the front belt, Section 2 is proximate to Section 1 and Section 3 is proximate to Section 4; and
wherein the absorbent article has a Donning-Ratio between about 1.0 and 1.5, wherein
Donning-Ratio=Target-Hip/[2*Relaxed-Product-Waist-Width],

and wherein
Target-Hip(mm)=102.48574+108.62219*Average Targeted Weight(kg){circumflex over ( )}0.5.

2. The package of claim 1 , wherein the front and back belts are discrete and joined to a garment-facing surface of the chassis.

3. The package of claim 1 , wherein one or more of the sections of the back belt has a Section-Modulus of from about 2 gf/mm to about 15 gf/mm, and wherein one or more of the sections of the front belt has a Section-Modulus of from about 2 gf/mm to about 15 gf/mm.

4. The package of claim 1 , wherein the Donning-Ratio is between about 1.1 and about 1.4.

5. The package of claim 1 , wherein one or both of the first plurality of elastics and the second plurality of elastics has an Average-Strand-Spacing of from about 0.25 mm to about 4 mm.

6. The package of claim 1 , wherein one or both of the first plurality of elastics and the second plurality of elastics has an Average-Dtex from about 10 to about 600.

7. The package of claim 1 , wherein one or both of the first plurality of elastics and the second plurality of elastics has an Pressure-Under-Strand of from about 0.1 to about 1 psi.

8. The package of claim 1 , wherein one or both of the first plurality of elastics and the second plurality of elastics has an Average-Strand-Spacing of from about 0.5 mm to about 3 mm, an Average-Dtex from about 20 to about 500, and an Pressure-Under-Strand from about 0.2 to about 0.8 psi.

9. The package of claim 1 , wherein the Relaxed Product Waist Width is from about 80 mm to about 270 mm and wherein the Average Targeted Weight is from about 6 kg to about 50 kg.

10. The package of claim 1 , wherein the Relaxed Product Waist Width is from about 230 mm to about 400 mm and wherein the Average Targeted Weight is from about 60 kg to about 135 kg.

11. A package comprising absorbent articles, comprising:
a package material containing a plurality of absorbent articles;
each absorbent article of the plurality absorbent articles, comprising an Average Targeted Weight and:
a chassis comprising a topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet, wherein the chassis comprises a front end edge and a back end edge;
a back belt disposed in a back waist region overlapping and extending outboard of a back waist region of the chassis;
a front belt disposed in a front waist region overlapping and extending outboard of a front waist region of the chassis;
a longitudinal axis;
a lateral axis;
wherein the back belt comprises a first plurality of elastics comprising greater than about 40 elastic strands, and wherein the front belt comprises a second plurality of elastics comprising greater than about 40 elastic strands;
wherein the first plurality of elastics has an Average-Strand-Spacing of less than 4 mm, and wherein the second plurality of elastics has an Average-Strand-Spacing average elastic strand spacing of less than 4 mm;
wherein the back belt is divided into 4 equal sections, wherein Section 4 comprises a proximal end edge of the back belt, Section 1 comprises a distal end edge of the back belt, Section 2 is proximate to Section 1 and Section 3 is proximate to Section 4;
wherein the front belt is divided into 4 equal sections, wherein Section 4 comprises a proximal end edge of the front belt, Section 1 comprises a distal end edge of the front belt, Section 2 is proximate to Section 1 and Section 3 is proximate to Section 4;
wherein the absorbent article has a Donning-Ratio between about 1.0 and 1.5, wherein
Donning-Ratio=Target-Hip/[2*Relaxed-Product-Waist-Width],

and wherein
Target-Hip(mm)=102.48574+108.62219*Average Targeted Weight(kg){circumflex over ( )}0.5;

wherein the modulus of one or more of the sections of the back belt has a Section-Modulus of from about 3 gf/mm to about 12 gf/mm; and wherein one or more of the sections of the front belt has a Section-Modulus of from about 3 gf/mm to about 12 gf/mm; and
wherein one or more of the sections of the back belt has a Pressure-Under-Strand from about 0.2 to about 0.8 psi; and wherein one or more of the sections of the front belt has a Pressure-Under-Strand from about 0.2 to about 0.8 psi.

12. The package of claim 11 , wherein the Donning-Ratio is between about 1.1 and about 1.4.

13. The package of claim 11 , wherein the front and back belts are discrete and joined to a garment-facing surface of the chassis.

14. The package of claim 11 , wherein the front and back belts are integral with the chassis.

15. The package of claim 11 , wherein the Section-Modulus of one or more sections of the back belt is from about 4 gf/mm to about 10 gf/mm, and wherein the modulus of one or more sections of the front belt is from about 4 gf/mm to about 10 gf/mm.

16. The package of claim 11 , wherein one or more sections of the back belt has an Average-Strand-Spacing of from about 0.5 mm to about 2.5 mm; and wherein one or more sections of the front belt has an Average-Strand-Spacing of from about 0.5 mm to about 2.5 mm.

17. The package of claim 11 , wherein one section of the back belt has a greater number of elastic strands versus the other sections of the back belt, and wherein one section of the front belt has a greater number of elastic strands versus the other sections of the front belt.

18. The package of claim 11 , wherein the first plurality of elastics of the back belt and the second plurality of elastics of the front belt have an Average-Dtex from about 40 to about 400.

19. The package of claim 11 , wherein at least a portion of the most distal elastic strands in Section 1 of the back belt are colored differently and/or a nonwoven overlapping them is colored or comprises a graphic which differentiates the at least a portion of the most distal elastics from the el

Assignees

• Procter & Gamble

Inventors

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

Classifications

• B29C66/00

  General aspects of processes or apparatus for joining preformed parts (means for handling the parts to be joined B29C65/78; testing the joint B29C65/82) · CPC title

• B32B37/22

  involving the assembly of both discrete and continuous layers · 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

• B32B37/12

  characterised by using adhesives · CPC title

• B32B37/0053

  Constructional details of laminating machines comprising rollers; Constructional features of the rollers · CPC title