Reduced leakage menstrual pad with built-in fold lines

• US 4,655,759 A
• Filed: 09/19/1985
• Issued: 04/07/1987
• Est. Priority Date: 09/19/1985
• Status: Expired due to Term

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Corporation
• Inventors: Ryan, Lenore S., Romans-Hess, Alice Y., Guenther, Frederick M.
• Primary Examiner(s): Yasko, John D.
• Application Number:
  US06/777,887
• Time in Patent Office: 565 Days
• Field of Search: 604/385, 604/379-380, 604/383, 604/386-387, 604/400, 604/385 A, 604/358
• US Class Current: 604/385.21
• CPC Class Codes: A61F 13/4756 the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level
• CPC Class Codes: A61F 13/51108 the top sheet having corrugations or embossments having one axis relatively longer than the other axis, e.g. forming channels or grooves in a longitudinal direction
• CPC Class Codes: A61F 13/534 having an inhomogeneous composition through the thickness of the pad A61F13/538, A61F13/539 take precedence; homogeneous cores with tissue wrapping A61F13/53
• CPC Class Codes: A61F 2013/51078 being embossed
• CPC Class Codes: A61F 2013/530131 being made in fibre but being not pulp
• CPC Class Codes: A61F 2013/53445 from several sheets
• CPC Class Codes: A61F 2013/5395 with thermoplastic agent, i.e. softened by heat

Abstract

A sanitary napkin is provided which minimizes the probability of side staining or side leakage by using embossed channels which are located adjacent to the longitudinal edges of the napkin. These embossed channels are activated during use by the thighs, allowing the sides of the napkin to fold upwards during use, thus forming an occlusive container.

Claims

1. A samitary napkin comprising a flexible, fluid impermeable backing sheet, a layer of absorbent material on said backing sheet and a fluid permeable cover having embossed in the absorbent on the user side face surface thereof a pair of embosed channels, said embossed channels located on each side of the longitudinal axis of said sanitary napkin with each of the neds of said embossed channels spaced apart from the edge of said sanitary napkin at least 1/8 inch, said channels in use being spaced apart from the napkin wearer'"'"'s body and allowing said napkin edges to fold upward at said embossed channels to form an occlusive volume between said napkin and the wearer'"'"'s body.

2. A sanitary napkin according to claim 1 wherein said cover is embossed with a plurality of pairs of embossed channels.

3. The napkin of claim 1 wherein the longitudinal edges are linear and said channels are arcuate whereby said napkin conforms with wearer'"'"'s body.

4. A sanitary napkin comprising a flexible fluid impermeable backing sheet, a layer of absorbent material on said backing sheet, and a fluid permeable cover having embossed on the user side face surface thereof at least one pair of embossed channels extending into said cover and said absorbent, said embossed channels being arcuate in a mirror image configuration with the closest points of the arcs in the middle of said napkin, said embossed channels having their ends spaced inward from the edge of said napkin at least 1/8 inch, and adapted to allow the edges to turn upward when in use to form an occlusive volume in between said napkin and the wearer'"'"'s body, wherein the upward folded edges are absorbent and are provided with said fluid-impervious backing sheet and wherein during use of said napkin the embossed channels are adapted to be activated by the thighs of the wearer to allow the absorbent edges to fold upwards to form said occlusive volume between the wearer'"'"'s body and said napkin.

5. The napkin of claim 4 wherein said embossed channels are between about 0.020 inch and about 0.250 in width.

6. The napkin of claim 4 wherein said napkin is provided with one pair of embossed channels.