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Absorbent Article Having Surface Visual Texture

Inactive Publication Date: 2012-04-19
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]An absorbent article comprising an apertured topsheet having a body-facing side and a garment-facing side, a backsheet, an absorbent core positioned between the topsheet and the backsheet, and a colored area viewable through a topsheet by a user viewing the body-facing side is provided. The absorbent article comprises a visual texture composed of less than about 65 objects per cm2 having an average mean areas greater than about 0.35 mm2
[000

Problems solved by technology

However, much of this technology is often hidden and therefore not viewable by a user.
Even when viewable, absorbent components often do not readily or visually communicate to a user the existence of this enhanced technology.
One problem with such topsheets, however, is that the total amount of liquid capable of passing through the topsheet under usual usage conditions depends on the amount of open area of the apertures, which in turn depends upon the number, size, and shape of the individual apertures.
Exceptionally large apertures increase the liquid passage rate but pose the problem of poor masking because liquids such as menses remain visible to the wearer through the apertures, which is considered undesirable.
In addition, large apertures promote a backflow of absorbed liquid, so called rewet, which is also undesirable.
Small individual apertures, on the other hand, cannot provide the liquid passage characteristics required to let liquids of high viscosity and / or solids content to pass through, resulting in too low a rate of liquid flow.

Method used

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  • Absorbent Article Having Surface Visual Texture
  • Absorbent Article Having Surface Visual Texture
  • Absorbent Article Having Surface Visual Texture

Examples

Experimental program
Comparison scheme
Effect test

example 1

Measure of Visual Texture

[0151]Example 1 shows the visual texture of the following sanitary napkin products:

TABLE 1Products testedProductNameDate of PurchaseCountryFIGURE1Inventive Sample 112Always Ultrathin2010Russia5with DriWeave3Always Ultrathin2010U.S.A.9with DriWeave4StayFree DryMax2009U.S.A.13Ultrathin5U by Kotex Regular2010U.S.A.176Kotex Supreme2007Colombia217Nosotras Invisible2008Colombia258ABC with Supsoft2006China29Topsheet9Femline Maxi Long2009Canada3310Inventive Sample 237

[0152]Each product was tested as set forth in the visual texture method above. For samples 1-6 and 9-10, five duplicate samples were tested. For samples 7 and 8, three duplicate samples were tested.

[0153]The data were collected from ROIs which were 400×1,000 pixels in size at a resolutions of 39 microns per pixel, covering 15.6 mm×39 mm of the topsheet in each image, (which is 608.4 square mm or 6.084 square cm).

TABLE 2Visual texture measurement of Products 1-10Average Number ofAverage Mean% Total Objec...

example 2

Sample Parameters

[0155]Aperture, microtexture, thickness, open area, land area, porosity, titanium dioxide level, and land area width for samples 1, 2, 3, and 10 were determined as set forth in Table 3.

TABLE 3Sample ParametersParameter / TopsheetSample 10Sample 1Sample 2Sample 3Macro Aperture DimensionsHeight0.8-1.1mm0.6mm0.65mm1.40mmMaximum diameter in top1.6 mm-1.9 mm1.2 mm-1.4 mm0.8-0.9mmHard to definesurfaceSpacing (Center-to-Center)2.2mm1.8mm1.0mm2.1mm# / sq in 160   225   625 150Microtexture DimensionsHeight0.060mm0.060mm0.020-0.025mm0.100-0.150mmAspect ratio  0.6  0.60.3-0.41.1-2(height / diameter)Spacing (Center-to-Center)0.20mm0.20mm0.12mm0.25mm# / sq in16000  16000  4600010000Film Thickness (gauge)0.9mil0.9mil1.0mil1.05milOpen Area 3%20%24%Not DeterminedLand Area37%34%31%Not DeterminedPorosity (ASTM 737-96)100-220m3 / m2 / min154-265m3 / m2 / min275m3 / m2 / min184m3 / m2 / minTiO2 Level 4% 4% 4%4%Land Area Width21mil18mil7milNot Determined

[0156]Dimension measurements were made by computer aided ...

example 3

Measure of Open Area and Land Area

[0157]The open area and land area of formed-film topsheets was measured using light microscopy and image analysis.

[0158]Samples 1, 2, and 10 of Example 1 were analyzed. A portion of topsheet from the feminine pad having an area of 2 to 5 cm2 was removed without damaging or deforming the structure. Areas of the topsheet with thermal bond sites were avoided. The topsheet sample was placed flat with the body-facing surface upward on the glass stage of a stereo zoom light microscope (Nikon SMZ-U). The microscope was fitted with a camera for digital image acquisition of a 5 megapixel or greater (2560×1920 pixels) image, and the microscope magnification was adjusted so that the field of view to the camera was approximately 7 mm by 10 mm as shown in FIG. 47.

[0159]For measurements of open area, the topsheet was backlit so that the apertures were bright and all the rest of the topsheet area is dark. The image was focused and the lighting was adjusted to maxi...

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PUM

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Abstract

An absorbent article comprising an apertured topsheet having a body-facing side and a garment-facing side, a backsheet, an absorbent core positioned between the topsheet and the backsheet, and a colored area viewable through a topsheet by a user viewing the body-facing side is provided. The absorbent article comprises a visual texture composed of less than about 65 objects per cm2 having an average mean areas greater than about 0.35 mm2.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of U.S. Provisional Application No. 61 / 393,863 filed Oct. 15, 2010.FIELD OF THE INVENTION[0002]The present invention relates to absorbent articles. More particularly, the present invention relates to a sanitary napkin having an improved surface visual texture.BACKGROUND OF THE INVENTION[0003]Absorbent articles such as sanitary napkins, pantiliners, tampons, absorbent interlabial devices, disposable diapers, incontinence products, and bandages are designed to absorb and retain liquid and other discharges from the human body and to prevent body and clothing soiling.[0004]Through the use of innovative topsheet materials, secondary topsheet materials, absorbent gelling materials and breathable backsheets, the technology in absorbent articles, and particularly sanitary napkins, has drastically advanced to provide women with products that absorb menses and other fluids away from a woman's body. However, much o...

Claims

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Application Information

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IPC IPC(8): A61F13/45
CPCA61F13/512A61F13/51394A61F13/513A61F13/5123A61F13/51104A61F13/5116A61F13/472A61F13/5121A61F13/515Y10T428/24331Y10T428/24612Y10T428/24826A61F13/15
Inventor VISSCHER, RONALD BOSMANRAWAT, DIGVIJAYZINK, KATHRYN REBECCASTONE, KEITH JOSEPHCECCHETTO, PIETROGIBSON, FREDRICK WILLIAM
Owner THE PROCTER & GAMBLE COMPANY
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