Winged napkin having cross-channeling

• US 4,773,905 A
• Filed: 08/27/1987
• Issued: 09/27/1988
• Est. Priority Date: 08/27/1987
• Status: Expired due to Term

• Current Assignee: McNeil-PPC Incorporated (Johnson & Johnson)
• Original Assignee: Personal Products Co. (Johnson & Johnson)
• Inventors: Molee, Kenneth J., Wilson, Kenneth B.
• Primary Examiner(s): Yasko, John D.
• Application Number:
  US07/090,174
• Time in Patent Office: 397 Days
• Field of Search: 604/386, 604/387, 604/378, 604/399, 604/385.1
• US Class Current: 604/378
• CPC Class Codes: A61F 13/4704 having preferential bending zones, e.g. fold lines or grooves
• CPC Class Codes: A61F 13/4758 the means preventing fluid flow in a longitudinal direction
• CPC Class Codes: A61F 13/533 having discontinuous areas of compression
• CPC Class Codes: A61F 13/5616 using flaps, e.g. adhesive, for attachment to the undergarment leakage prevention means encirculing the crotch portion A61F13/476
• CPC Class Codes: A61F 2013/51078 being embossed

Abstract

A sanitary napkin having flaps extending laterally from each of the longitudinal edges of its central absorbent element is provided with at least one fluid retarding channel disposed transversely across the absorbent element for inhibiting the transmission of body fluid from a central portion of the absorbent element to at least one transverse end. The preferred construction employs the use of two spaced apart compressed portions of the absorbent element to define a central absorbent portion and delay the transmission of body fluid from the central portion into the transverse end portions of the absorbent element, thereby minimizing the incidence of leakage from the ends of the napkin.

Claims

1. A sanitary napkin comprising:

(a) an absorbent element having longitudinally extending sides and transverse ends;

(b) flaps extending laterally from each of said longitudinally extending sides of said absorbent element; and

(c) a fluid retarding means disposed transversely across said element for inhibiting the transmission of body fluid from a central portion of said absorbent element to one of said transverse ends of said absorbent element.

2. The sanitary napkin of claim 1 wherein said fluid retarding means comprises at least two compressed portions of said absorbent element, which defining a central portion and inhibiting the transmission of body fluid from said central portion of said absorbent element to each of said transverse ends.

3. The sanitary napkin of claim 2 wherein said flaps comprise absorbent material.

4. The sanitary napkin of claim 2 wherein said compressed portions are disposed along curvilinear paths, said paths having ends disposed on the longitudinally extending sides of said absorbent element.

5. The sanitary napkin of claim 3 further comprising body fluid sealing means disposed between said absorbent element and said flaps for preventing the transmission of body fluid from said absorbent element into said flaps.

6. The sanitary napkin of claim 5 wherein said body fluid sealing means is disposed along the entire boundary between said absorbent element and said flaps.

7. The sanitary napkin of claim 3 further comprising fluid tight seal means around the entire periphery of said sanitary napkin.

8. The sanitary napkin of claim 3 wherein said compressed portions have end points which lie on a pair of junction lines located between said absorbent element and said flaps.

9. The sanitary napkin of claim 8 wherein said flaps comprise a width that is greater than the length of said central portion of the absorbent element.

10. The sanitarY napkin of claim 2 wherein said napkin is folded along the compressed portions of the absorbent element to provide a better fit for said napkin.

11. The napkin of claim 10 wherein said absorbent element is folded along said compressed portions to provide a concave configuration for a body side surface of said napkin.

12. A sanitary napkin comprising:

(a) an absorbent element having longitudinally extending sides and transverse ends, and comprising an absorbent core, a liquid impermeable cover on one side of said absorbent core and a liquid impermeable barrier on the other side of said absorbent core;

(b) flaps comprising said cover and said barrier extending laterally from each of said absorbent element, and

(c) fluid retarding means disposed transversely across said absorbent element for inhibiting the transmission of body fluids from a central portion of said absorbent element to one of said transverse ends.

13. The sanitary napkin of claim 12 wherein said fluid retarding means comprises a compressed portion of said absorbent element defining a channel therein.

14. The sanitary napkin of claim 13 wherein said fluid retarding means comprises a pair of spaced apart channels defining a central portion and two end portions of said absorbent element.

15. The sanitary napkin of claim 12 comprising a further absorbent material disposed between said absorbent core and said barrier and extending into said flaps between said cover and said barrier.

16. The sanitary nakin of claim 15 comprising body fluid sealing means disposed between said absorbent element and said flaps for preventing the transmission of body fluids from said absorbent element into said flaps.

17. The sanitary napkin of claim 13 wherein said fluid retarding means comprises a portion of said absorbent core treated with a fluid repellent composition.

18. The sanitary napkin of claim 13 wherein said fluid retarding means are disposed on either side of the central portion of said absorbent element and extend between said flaps to define a central absorbent portion and two end portions of said absorbent element.

19. The sanitary napkin of claim 18 wherein said fluid retarding means are disposed along curvilinear paths to define a central absorbent portion having convex transverse ends.

20. The sanitary napkin of claim 19 wherein said absorbent element is hour-glass shaped and said central absorbent portion has concave longitudinal sides.