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Sanitary Napkin with Braid

a technology of sanitary napkin and braid, which is applied in the field of sanitary napkin, can solve the problems of reducing the absorbency of the cloth, and not being able to prevent the pad from bunching, etc., and achieves the effects of minimizing bulk, maximizing absorbency, and minimizing bulk

Inactive Publication Date: 2012-06-28
MERIMONT US
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]The invention provides a sanitary napkin which achieves a dynamic body fit because the pad is securely held in place by a braid positioned toward the middle of the pad. An intergluteal strip or “braid” of absorbent material maximizes absorbency, while minimizing bulk. The braid allows the pad to be comfortably held in place during use, in much the same way that the popular thong underwear are held, and provides a secure yet comfortable fit. Further, the braid has superior absorbency and improves the functioning of the pad.
[0011]By “braid” or “braided” what is meant is that one or more separate strands of material are knitted, braided, plaited or woven to form a series of “interlocking loops.” This provides maximum strength and absorbency, while minimizing bulk.
[0013]Fibers may be constructed of natural, manufactured, synthetic or blended materials. Fibers may be fabrics, threads, yams or other formed materials. Natural materials include, but are not limited to, cotton, hemp, wool, wood-pulp or other natural materials. Manufactured fibers like cellulose may be processed to increase absorbency or change the texture of the material. Synthetic materials may include polyacrylate, polypropylene, polyester, polyethylene, polyurethane, and LYCRA™. In one embodiment a super-absorbent is incorporated into the material. In another embodiment a wicking material is incorporated to facilitate the movement of moisture.

Problems solved by technology

However, despite the importance of fit to sanitary protection, most prior art napkins are secured either by adhesion to an undergarment or rely on the use of belts, safety pins or clips and other attachment means.
Typically the undergarment itself doesn't fit well, and even if it does, nothing prevents the pad from bunching and minimizing the absorbent surface area.
Further, the adhesives often fail, and the pad shifts and fails in its primary task.
Belts provide greater security, but they are bulky, restrictive, uncomfortable, and few women use them.
However, each of these suffers from the same disadvantage, in that the protrusion is either too bulky for comfort, or if sufficiently slender for comfort, then it lacks sufficient absorbency.

Method used

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  • Sanitary Napkin with Braid
  • Sanitary Napkin with Braid
  • Sanitary Napkin with Braid

Examples

Experimental program
Comparison scheme
Effect test

example 1

Pad Structure

[0033]FIG. 1A shows a side view of the pad (1), illustrating the braid (3) attached to the pad (2) roughly in the center of the elongated pad. FIG. 1B-D demonstrate attachment to the inner liner (6), the absorbent core (7) and the outer liner (8). FIG. 2A shows a top view of the inner side of the pad with the braid (3) attached in the middle of the pad (2). FIG. 2B shows the braid attached in the rear portion of the pad. FIG. 2C shows a braid attached to the end of a “thong” shaped pad. FIG. 3 shows a perspective view.

example 2

Pad Manufacture

[0034]In one embodiment, the pad of the invention is manufactured using a sanitary napkin pad, and incontinence pad machine. Production can easily run a wide range of raw materials and produce sanitary napkins with various manufacturing structures because the machine has been designed to assure simple and rapid size changes. In one embodiment, ultrathin cores with binders provide a number of fluff layers with an integrated SAP powder layered with non-woven airlaid transition layers. Braided attachments are incorporated with adhesive on the topsheet prior to folding, stacking and packing Thong pantyliners with a 180 degree turn are woven directly into the braided string. After the braid is incorporated, the napkins enter a tri-folding, stacking and packing unit, which completes the production process.

example 3

Ultrasonic Sealing

[0035]The braided attachment can be added after the sanitary napkin or incontinence pad is assembled. In one embodiment, a braid with three threads made of cotton and lined with a man-made absorbent material are sewn or sealed by ultrasound to the inner liner of the absorbent pad. The cotton braid is pressed using a press at 7000 kg for 15 minutes. The braid is placed in the middle of the sanitary napkin. In one embodiment using a 24-cm sanitary napkin the braid is placed at 12 cm. The braid was fixed to the sanitary napkin using ultrasound. Briefly, the braid is unwound at one end to create “roots” about 2 cm long inside the sanitary napkin through the inner liner and into the absorbent pad. The un-braided “roots” are heated by ultrasound and adhered to the inner liner leaving the “roots” embedded in the absorbent pad. In one embodiment the braid is 12 cm long. In a preferred embodiment the braid is 15 cm long. A loose braid can be used to keep the material soft a...

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Abstract

The present invention relates to a sanitary napkin whose securing means includes a braid of absorbent material. The braid structure maximizes absorbency, while minimizing bulk and thus allows the pad to be comfortably held in place during use, in much the same way that the popular thong underwear are held.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a Continuation Application of U.S. application Ser. No. 12 / 440,920 filed Mar. 11, 2009, which is a 35 U.S.C. Section 371 of PCT / US2007 / 078171 filed Sep. 11, 2007, which claims priority to U.S. Provisional Application No. 60 / 825,244 filed Sep. 11, 2006, which are incorporated herein by reference in their entirety.FEDERALLY SPONSORED RESEARCH[0002]Not applicable.REFERENCE TO MICROFICHE APPENDIX[0003]Not applicable.FIELD OF THE INVENTION[0004]The invention relates to sanitary napkins improved with an extending braid, to be worn like a thong. The braid provides much improved absorbency protection and fit, and yet is comfortable to wear.BACKGROUND OF THE INVENTION[0005]The effectiveness of external feminine sanitary protection products such as sanitary napkins depends upon a good fit, which serves to minimize discomfort and provide the maximum absorbent surface area. However, despite the importance of fit to sanitary protec...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F13/51A61L15/28A61L15/46A61L15/20
CPCA61F13/47227A61F13/47254A61F2013/4706A61F13/491A61F13/5605A61F13/4758
Inventor ROCHE DEL AYALA, GABRIELA
Owner MERIMONT US
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