Absorbent article with visually and tactilely distinctive outer cover

• US 6,140,551 A
• Filed: 04/29/1998
• Issued: 10/31/2000
• Est. Priority Date: 09/29/1997
• Status: Expired due to Fees

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Inventors: Sperl, Michael Donald, Niemeyer, Jean Feyen, Moster, Steven Walter, McManus, Jeffrey Lawrence, Peterson, Dale Arthur, Sudduth, Gregory Todd, Eby, Thomas Allan, Heyn, David Willis, Shaw, Gordon Allen, Schleinz, Alan Francis, Zoromski, Paula Kay, Leak, Allen Todd
• Primary Examiner(s): Weiss, John G.
• Assistant Examiner(s): Peppers, III, Miley Craig
• Application Number:
  US09/067,803
• Time in Patent Office: 916 Days
• Field of Search: 604/358, 604/365, 604/367, 604/373, 604/374, 604/384, 604/385.1, 604/383, 604/378, 604/380, 604/385.01
• US Class Current: 604/367
• CPC Class Codes: A61F 13/15203 Properties of the article, e.g. stiffness or absorbency chemical aspects A61L15/00
• CPC Class Codes: A61F 13/51462 being defined by a value or parameter
• CPC Class Codes: A61F 13/51476 being three-dimensional, e.g. embossed, textured, pleated, or with three-dimensional features, like gathers or loops
• CPC Class Codes: A61F 13/5148 having an impervious inner layer and a cloth-like outer layer
• CPC Class Codes: A61F 13/51496 having visual effects

Abstract

An absorbent article, such as the shown diaper (10), has a front waistband portion (14), a back waistband portion (12) and an intermediate portion (16) interconnecting said front and back waistband portions. The article includes a backsheet member (30), a liquid permeable topsheet layer (28), and an absorbent body (32) sandwiched between the topsheet layer (28) and backsheet member (30). The backsheet member includes an air permeable, polymer sheet layer (96), and a first, outward nonwoven fibrous web (94) attached to or otherwise operatively joined with a major facing surface (78) of the polymer sheet layer (96) at a plurality of individual, spaced apart thermal bonds (98). The outward nonwoven web (94) includes a plurality of fibers having substantially unbonded lengths which extend substantially continuously between at least an adjacent pair of the bonds, and the substantially unbonded fiber lengths are arched away from an outward surface of the thermal bonds by arch heights (60) which provides a distinctive embossing element depth value. In addition, the fibers of the outward nonwoven web can have a selected denier, and the outward nonwoven web (94) can have a selected basis weight.

Claims

1. An absorbent article having a front waistband portion, a back waistband portion and an intermediate portion interconnecting said front and back waistband portions, said article comprising:

a backsheet member;

a liquid permeable topsheet layer; and

an absorbent body sandwiched between said topsheet layer and backsheet member;

said backsheet member including;

an air permeable, polymer sheet layer having a WVTR value of at least about 500 g/m² per 24 hr;

an outward nonwoven fibrous web joined with a major facing surface of said polymer sheet layer at a plurality of individual, spaced apart thermal bonds;

said outward nonwoven web including a plurality of fibers having substantially unbonded lengths which extend substantially continuously between at least an adjacent pair of said bonds, said substantially unbonded fiber lengths lofted away from an outward surface of said thermal bonds to provide an embossing element depth value of at least about 160 μ

m, said fibers of said outward nonwoven web having a denier of not more than about 3 dpf, said outward nonwoven web having a basis weight of not more than about 55 g/m².

2. An article as recited in claim 1, wherein said outward nonwoven fibrous web is directly attached to said polymer sheet layer at said plurality of thermal bonds.

3. An article as recited in claim 1, wherein said outward nonwoven fibrous web is indirectly attached to said polymer sheet layer at said plurality of thermal bonds.

4. An article as recited in claim 3, wherein said outward nonwoven fibrous web is directly attached to a first major facing surface of an intermediate nonwoven fibrous web at said plurality of thermal bonds, and said polymer sheet layer is attached to a second major facing surface of said intermediate nonwoven web.

5. An article as recited in claim 4, wherein said fibers provide an embossing element depth value of at least about 175 μ

m.

6. An article as recited in claim 4, wherein said outward nonwoven fibrous web has a basis weight of about 13.6 g/m².

7. An article as recited in claim 6, wherein intermediate nonwoven fibrous web has a basis weight of about 13.6 g/m².

8. An article as recited in claim 4, wherein thermal bonds provide a bonding area of at least about 11% of a total area of said backsheet member.

9. An article as recited in claim 4, wherein thermal bonds provide a bonding area of up to about 45% of a total area of said backsheet member.

10. An article as recited in claim 4, wherein said polymer sheet layer is a composite laminate composed of a core layer sandwiched between a pair of skin layers;

said core layer including a linear-low-density-polyethylene.

11. An article as recited in claim 4, wherein said topsheet layer and said absorbent body are substantially nonelastomeric and are attached to restrain excessive stretching of said backsheet member.

12. An article as recited in claim 4, wherein at least a majority of adjacent thermal bonds are spaced apart by a distance which is at least about 1 mm, and up to about 25 mm.

13. An article as recited in claim 1, wherein said fibers provide an embossing element depth value of at least about 175 μ

m.

14. An article as recited in claim 1, wherein outward nonwoven fibrous web has a basis weight of about 27 g/m².

15. An article as recited in claim 1, wherein thermal bonds provide a bonding area of at least about 11% of a total area of said backsheet member.

16. An article as recited in claim 1, wherein thermal bonds provide a bonding area of up to about 45% of a total area of said backsheet member.

17. An article as recited in claim 1, wherein said polymer sheet layer includes an adhesive attachment to said outward nonwoven web.

18. An article as recited in claim 1, wherein said topsheet layer and said absorbent body are substantially nonelastomeric and are attached to restrain excessive stretching of said backsheet member.

19. An article as recited in claim 1, wherein a majority of adjacent thermal bonds are spaced apart by a distance which is at least about 1 mm and up to about 25 mm.

20. An absorbent article having a front waistband portion, a back waistband portion and an intermediate portion interconnecting said front and back waistband portions, said article comprising:

a backsheet member;

a liquid permeable topsheet layer; and

an absorbent body sandwiched between said topsheet layer and backsheet member;

said backsheet member including;

an air permeable, polymer sheet layer having a WVTR value of at least about 500 g/m² per 24 hr, wherein said polymer sheet layer is a composite laminate composed of a core layer sandwiched between a pair of skin layers, with said core layer including a linear-low-density-polyethylene; and

an outward nonwoven fibrous web joined with a major facing surface of said polymer sheet layer at a plurality of individual, spaced apart thermal bonds;

said outward nonwoven web including a plurality of fibers having substantially unbonded lengths which extend substantially continuously between at least an adjacent pair of said bonds, said substantially unbonded fiber lengths lofted away from an outward surface of said thermal bonds to provide an embossing element depth value of at least about 160 μ

m, said fibers of said outward nonwoven web having a denier of not more than about 3 dpf, said outward nonwoven web having a basis weight of not more than about 55 g/m².