It is called liquid sanitary towel because it is different from the cotton wadding fiber used in traditional sanitary towels. Absorbing material is a new type of liquid material, FlexFoamTM, which is liquefied by pure water and nano-molecular polymer through emulsification technology, similar to the porous morphology of memory cotton.
The test results show that the surface of liquid sanitary towel is drier. Better absorption performance, no side leakage. The liquid sanitary towel has the phenomenon of re-infiltration after being subjected to slightly the same pressure, but the amount is small, and its menstrual blood absorption time is short, with an average of only 3 seconds.
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Sanitary napkins are divided into three layers, namely, surface layer, absorbent core and bottom layer.
The inner layer is mainly made of cotton, non-woven fabric, paper pulp or polymer composite paper, which is used to absorb menstrual blood.
The back glue of sanitary napkin is made of impermeable material, which can leave menstrual blood in sanitary napkin. In 1970s and 1980s, self-adhesive adhesive was developed to fix sanitary napkins on underwear.