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Construction of<br />
a Conventional<br />
Sanitary Pad<br />
In order to ga<strong>in</strong> knowledge on the construction of<br />
conventional sanitary pads, a variety of models and<br />
brands of pads were looked upon. Their different design<br />
solutions, materials, sizes, thicknesses, number of layers,<br />
and price were observed. All the exam<strong>in</strong>ed sanitary<br />
pads functioned more or less <strong>in</strong> the same manner, only<br />
diverg<strong>in</strong>g <strong>in</strong> details. The materials used were also rather<br />
similar, except for a biodegradable pad, which ma<strong>in</strong>ly<br />
consisted of cotton and bio-plastic. Follow<strong>in</strong>g is a<br />
general and abbreviated list of layers and materials:<br />
- Surface layer: Nonwoven or perforated film of<br />
polyethylene or polypropylene. Allows the liquid<br />
to pass through and is meant to give the user a dry<br />
feel<strong>in</strong>g.<br />
- Transfer layer: Loosely packed cellulose or a nonwoven<br />
material made from polyethylene or polypropylene.<br />
Transfers and absorbs the liquid quickly to the<br />
absorbent layer.<br />
- Absorbent layer: Compressed cellulose, sometimes<br />
comb<strong>in</strong>ed with superabsorbent polymers. Absorbs<br />
and holds liquid.<br />
- Barrier layer: Plastic sheet of polyethylene or<br />
polypropylene. Possesses a hydrophobic quality <strong>in</strong><br />
terms of prevent<strong>in</strong>g liquid from leak<strong>in</strong>g through.<br />
- Adhesive layer: Adhesive of natural or synthetic res<strong>in</strong>.<br />
Glues the pad to the underwear dur<strong>in</strong>g use.<br />
- Release paper: Plastic sheet of polyethylene or<br />
polypropylene. Protects the adhesive (sometimes <strong>in</strong><br />
comb<strong>in</strong>ation with the wrapp<strong>in</strong>g paper).<br />
- Wrapp<strong>in</strong>g paper: Plastic sheet of polyethylene<br />
or polypropylene. Protects the pad from its<br />
surround<strong>in</strong>gs.<br />
- Secondary packag<strong>in</strong>g: Plastic bag of polyethylene<br />
or polypropylene. Keeps the s<strong>in</strong>gle packed pads<br />
together.<br />
Dissection of a conventional sanitary pad<br />
Reality Studio 09 - <strong>New</strong> <strong>Sense</strong> <strong>in</strong> <strong>Nuisance</strong><br />
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