What are the raw materials used in sanitary napkins?

The primary raw materials for producing sanitary napkins include: nonwoven fabric, pulp, highly absorbent polymer (SAP), polyethylene (PE) film, hot melt adhesive, elastic materials (including elastic rubber bands and elastic nonwoven fabrics), absorbent liner paper, dry paper, and release paper (release film). Each raw material plays a distinct role in the product. Among them, pulp and highly absorbent polymer (SAP) serve as the primary components responsible for liquid absorption and storage, making them the most critical raw materials in sanitary napkins.

What is the structural composition of sanitary napkins?

The sanitary napkin is structured in four distinct layers from top to bottom: the surface layer, which directly contacts the intimate area to facilitate rapid absorption of menstrual blood; the drainage layer, which channels and disperses the blood downward; the absorbent core, which stores the menstrual blood; and the leak-proof base layer, which prevents leakage. Auxiliary components include three-dimensional protective edges and anti-adhesive release paper. For women's sanitary pantyliners (pantyliners), additional features like elastic waistbands and leg bands are incorporated. To ensure the absorbent core's integrity, the product typically features a wide sealing edge around the perimeter. Together with the internal absorbent core, these elements form an integral part of the sanitary napkin, playing a critical role in absorption and leak prevention. Each component is essential for effective menstrual blood absorption and leakage control, with none being dispensable.