Liquid-retaining absorbent garment and method of manufacture

• US 5,476,458 A
• Filed: 12/22/1993
• Issued: 12/19/1995
• Est. Priority Date: 12/22/1993
• Status: Expired due to Term

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Corporation
• Inventors: Popp, Robert L., Glaug, Frank S., Kuen, David A.
• Primary Examiner(s): Green, Randall L.
• Assistant Examiner(s): ZUTTARELLI, ANTHONY
• Application Number:
  US08/171,578
• Time in Patent Office: 727 Days
• Field of Search: 604/358, 604/369, 604/373, 604/378, 604/385.1, 604/385.2, 604/393, 604/394, 604/396, 604/401, 604/402
• US Class Current: 604/378
• CPC Class Codes: A61F 13/15203 Properties of the article, e.g. stiffness or absorbency chemical aspects A61L15/00
• CPC Class Codes: A61F 13/49009 with elastic means
• CPC Class Codes: A61F 13/49015 the elastic means being elastic panels
• CPC Class Codes: A61F 13/4942 the barrier not being integral with the top- or back-sheet
• CPC Class Codes: A61F 13/496 in the form of pants or briefs
• CPC Class Codes: Y10T 156/1002 with permanent bending or reshaping or surface deformation of self sustaining lamina
• CPC Class Codes: Y10T 156/1051 by folding
• CPC Class Codes: Y10T 156/1089 of discrete laminae to single face of additional lamina

Abstract

An absorbent garment includes a three-dimensional pant body defining a waist opening, two leg openings, and a crotch region. A containment trough formed of liquid,impermeable material has a base portion bonded to the crotch region and integral retaining walls positioned transversely outward from the base portion. The retaining walls are freestanding from the pant body and include elastic members so as to define freestanding, elasticized flaps. An absorbent structure and liner are disposed between the elasticized flaps. To retard liquid movement away from the absorbent structure, the liner is wrapped around the side edges and partly beneath the absorbent structure. Further, an inwardly-directed face of each flap has a first Wicking Value while the liner has a second Wicking Value that is at least 2 times greater than the first Wicking Value on a gram per gram basis.

Claims

1. An absorbent garment having longitudinal and transverse axes, the garment comprising:

a three-dimensional pant body defining a waist opening, two leg openings, and a crotch region;

a containment trough having a liquid impermeable base portion bonded to the crotch region and integral retaining walls transversely outward from the base portion, each retaining wall .;

being liquid impermeable and freestanding from the pant body;

elastic members operatively joined to the retaining walls to define freestanding elasticized flaps, each flap comprising on of the liquid impermeable walls and having an inwardly-directed face that is adapted to transport liquid in the plane of the inwardly directed face as defined by a first Wicking Value greater than zero;

an absorbent structure disposed between the flaps, the absorbent structure having upper and lower surfaces, longitudinally spaced end edges, and side edges extending between the end edges; and

a liner bonded to the containment trough and formed of a liquid permeable material that is adapted to transport liquid in the plane of the liquid permeable material as defined by a second Wicking Value, the liner covering the upper surface, wrapped over the side edges, and covering at least part of the lower surface of the absorbent structure;

wherein the second Wicking Value is at least 2 times greater than the first Wicking Value on a gram per gram basis.

2. The absorbent garment of claim 1, wherein the pant body is formed of a gas permeable material, and the garment transversely outward from the flaps is gas permeable.

3. The absorbent garment of claim 1, wherein the first Wicking Value is less than about 0.25 gram per gram and the second Wicking Value is more than about 0.5 gram per gram.

4. The absorbent garment of claim 1, wherein the absorbent structure has a width of less than about 150 millimeters and is located within about 10 millimeters of each flap.

5. The absorbent garment of claim 4, wherein each flap has a height of from about 25 to about 75 millimeters.

6. The absorbent garment of claim 1, wherein the absorbent structure is completely wrapped by the liner.

7. The absorbent garment of claim 6, wherein the liner is releasably bonded to the base portion.

8. The absorbent garment of claim 1, wherein the pant body comprises a center panel and side panels.

9. The absorbent garment of claim 8, further comprising a pair of support members, each support member having an inner segment bonded to one of the retaining walls and an outer segment bonded to the pant body.

10. The absorbent garment of claim 9, wherein a portion of each side panel is sandwiched between the center panel and the outer segment of one of the support members.

11. The absorbent garment of claim 10, wherein the pant body and support members are each formed of a gas permeable material, and the garment transversely outward from the flaps is gas permeable.

12. The absorbent garment of claim 8, further comprising first and second support members, the first support member bonded to the center panel with a portion of at least one side panel sandwiched between the first support member and the center panel, the second support member bonded to the containment trough.

13. An absorbent garment having longitudinal and transverse axes, the garment comprising:

a three-dimensional pant body defining a waist opening, two leg openings, and a crotch region;

a containment trough having a liquid impermeable base portion bonded to the crotch region and integral retaining walls transversely outward from the base portion, each retaining wall being liquid impermeable and freestanding from the pant body;

elastic members operatively joined to the retaining walls to define freestanding elasticized flaps, each flap comprising on of the liquid impermeable walls and having an inwardly-directed face that is adapted to transport liquid in the plane of the inwardly directed face as defined by a first Wicking Value greater than zero;

an absorbent structure disposed between the flaps, the absorbent structure having upper and lower surfaces, longitudinally spaced end edges, and side edges extending between the end edges; and

a liner bonded to the containment trough and formed of a liquid permeable material that is adapted to transport liquid in the plane of the liquid permeable material as defined by a second Wicking Value, the liner covering the upper surface, wrapped over the side edges, and covering at least part of the lower surface of the absorbent structure;

wherein the second Wicking Value is at least 3 times greater than the first Wicking Value on a gram per gram basis.

14. An absorbent garment having longitudinal and transverse axes, the garment comprising:

a three-dimensional pant body defining a waist opening, two leg openings, and a crotch region;

a containment trough having a liquid impermeable base portion bonded to the crotch region and integral retaining walls transversely outward from the base portion, each retaining wall being liquid impermeable and freestanding from the pant body;

elastic members operatively joined to the retaining walls to define freestanding elasticized flaps, each flap comprising on of the liquid impermeable walls and having an inwardly-directed face that is adapted to transport liquid in the plane of the inwardly directed face as defined by a first Wicking Value greater than zero;

an absorbent structure disposed between the flaps, the absorbent structure having upper and lower surfaces, longitudinally spaced end edges, side edges extending between the end edges, and a width in the crotch region of less than about 150 millimeters; and

a liner bonded to the containment trough and formed of a liquid permeable material that is adapted to transport liquid in the plane of the liquid permeable material as defined by a second Wicking Value, the liner covering the upper surface, wrapped over the side edges, and covering at least part of the lower surface of the absorbent structure;

wherein the second Wicking Value is at least 3 times greater than the first Wicking Value on a gram per gram basis.

15. An absorbent garment having longitudinal and transverse axes, the garment comprising:

an outer cover formed of a gas permeable material and defining front and back waist regions with a crotch region therebetween;

a containment trough having a liquid impermeable base portion bonded to the crotch region and integral retaining walls transversely outward from the base portion, each retaining wall being liquid impermeable and freestanding from the outer cover;

elastic members operatively joined to the retaining walls to define freestanding elasticized flaps, each flap comprising on of the liquid impermeable walls and having an inwardly-directed face that is adapted to transport liquid in the plane of the inwardly directed face as defined by a first Wicking Value greater than zero;

an absorbent structure disposed between the flaps, the absorbent structure having upper and lower surfaces, longitudinally spaced end edges, and side edges extending between the end edges; and

a liner formed of a liquid permeable material that is adapted to transport liquid in the plane of the liquid permeable material as defined by a second Wicking Value, the liner completely wrapping the absorbent structure and bonded to the containment trough;

wherein the second Wicking Value is at least 2 times greater than the first Wicking Value on a gram per gram basis.

16. The absorbent garment of claim 15, wherein the first Wicking Value is less than about 0.25 gram per gram and the second Wicking Value is more than about 0.5 gram per gram.

17. The absorbent garment of claim 15, wherein the absorbent structure has a width of less than about 125 millimeters and is located within about 10 millimeters of each flap, each flap having a height of from about 25 to about 75 millimeters.

18. An absorbent garment having longitudinal and transverse axes, the garment comprising:

a three-dimensional pant body defining a waist opening, two leg openings, and a crotch region;

a containment trough having a liquid impermeable base portion bonded to the crotch region and integral retaining walls transversely outward from the base portion, each retaining wall being fluid impermeable and freestanding from the pant body;

elastic members operatively joined to the retaining walls to define freestanding elasticized flaps, each flap comprising on of the liquid impermeable walls and having an inwardly-directed face that is adapted to transport liquid in the plane of the inwardly directed face as defined by a first Wicking Value greater than zero, each flap having a height of from about 25 to about 75 millimeters;

an absorbent structure disposed between the flaps, the absorbent structure having a width of less than about 150 millimeters and being located within about 10 millimeters of each flap, the absorbent structure having upper and lower surfaces, longitudinally spaced end edges, and side edges extending between the end edges; and

a liner bonded to the base portion and formed of a liquid permeable material that is adapted to transport liquid in the plane of the liquid permeable material as defined by a second Wicking Value, the liner covering the upper surface, wrapped over the side edges, and covering at least part of the lower surface of the absorbent structure;

wherein the second Wicking Value is at least 2 times greater than the first Wicking Value on a gram per gram basis.

19. The absorbent garment of claim 18, wherein the pant body is formed of a gas permeable material, and the garment transversely outward from the flaps is gas permeable.

20. The absorbent garment of claim 18, wherein the first Wicking Value is less than about 0.2 gram per gram and the second Wicking Value is more than about 0.6 gram per gram.

21. The absorbent garment of claim 18, wherein the liner completely wraps the absorbent structure.

22. The absorbent garment of claim 21, wherein the liner is releasably bonded to the base portion.

23. The absorbent garment of claim 18, wherein the pant body comprises a center panel and side panels.

24. The absorbent garment of claim 23, further comprising a pair of support members, each support member having an inner segment bonded to one of the retaining walls and an outer segment bonded to the pant body, a portion of each side panel being sandwiched between the center panel and the outer segment of one of the support members.

25. The absorbent garment of claim 24, wherein the pant body and support members are each formed of a gas permeable material, and the garment transversely outward from the flaps is gas permeable.

26. The absorbent garment of claim 23, further comprising first and second support members, the first support member bonded to the center panel with a portion of at least one side panel sandwiched between the first support member and the center panel, the second support member bonded to the containment trough.

27. An absorbent garment having longitudinal and transverse axes, the garment comprising:

a three-dimensional pant body formed of gas permeable materials and defining a waist opening, two leg openings and a crotch region, the pant body comprising a center panel and at least two side panels bonded to the center panel;

a containment trough having a liquid impermeable base portion bonded to the center panel and integral retaining walls transversely outward from the base portion, each retaining wall being liquid impermeable and freestanding from the pant body;

elastic members operatively joined to the retaining walls to define freestanding elasticized flaps, each flap comprising on of the liquid impermeable walls and having an inwardly-directed face that is adapted to transport liquid in the plane of the inwardly directed face as defined by a first Wicking Value greater than zero;

a pair of support members formed of a gas permeable material, each support member having an inner segment bonded to one of the retaining walls and an outer segment bonded to the pant body, a portion of each side panel being sandwiched between the center panel and the outer segment of one of the support members;

an absorbent structure disposed between the flaps, the absorbent structure having upper and lower surfaces, longitudinally spaced end edges, and side edges extending between the end edges; and

a liner bonded to the base portion and formed of a liquid permeable material that is adapted to transport liquid in the plane of the liquid permeable material as defined by a second Wicking Value, the liner covering the upper surface, wrapped over the side edges, and covering at least part of the lower surface of the absorbent structure;

wherein the second Wicking Value is at least 2 times greater than the first Wicking Value on a gram per gram basis, and the garment transversely outward from the flaps is gas permeable.

28. The absorbent garment of claim 27, wherein the first Wicking Value is less than about 0.25 gram per gram and the second Wicking Value is more than about 0.5 gram per gram.

29. The absorbent garment of claim 27, wherein the absorbent structure is located within about 10 millimeters of each flap and each flap has a height of from about 30 to about 50 millimeters.

30. The absorbent garment of claim 27, wherein the liner completely wraps the absorbent structure and is releasably bonded to the pant body.