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Sanitary napkin structure can be divided into surface layer, absorption core, the bottom.
Each layer of material is bonded with hot melt adhesive.
Surface is directly contact with the skin of the part, the material is soft, surface texture and indentation can affect the effect of sanitary napkin Reverse Osmosis (dry). PE perforated film surface and cotton surface is the most commonly used two kinds of materials, PE surface plus micro-hole design, can make menstrual not easy to return to infiltration, so that users have a dry feeling, but the material is hard, some users will cause allergic reactions; due to the improvement of the absorbent design of cotton and the advent of perforated and composite materials,
2001 years after the market share is gradually higher than the PE surface of the sanitary cotton. The inner layer is mainly composed of cotton, non-woven, pulp or the composite material formed by polymer and polymer composite paper, used to absorb the outflow of menstrual blood. The side of the design is mainly used to prevent side leakage, because the use of health cotton and the body present a certain angle, easier and groin flow friction, so the use of soft material side of the health cotton is more favored by women. Sanitary cotton gum is impervious material, you can keep the menstrual blood in the health of cotton, in the 70-80-year development from sticky gum, easy to fix the sanitary cotton on the underwear.