Raw Materials for Sanitary Napkins -sanahygiene.com

 Conventional structure and material used in sanitary napkin

In order to classify the raw material for sanitary pad, first we have to understand the basic mechanism how a sanitary pad works, what are their requirements and accordingly we have to select the same. Sanitary pad comprises of multilayered structure in which each layer have specific function to perform. It consists of three main layers the top sheet, absorbent core and barrier sheet .

a) Top sheet: It is designed to transfer fluid quickly from the top sheet to secondary layers. The top sheet contains thermoplastic fibers to prevent capillary collapse of this layer, and small amount of hydrophilic absorbent fibre to allow fluid to absorb. Commercially available top sheet are made up of polypropylene fibre.

Raw material for top sheet: Organic cotton as top sheet is one the commonly advised raw material for sanitary napkin because of its non-irritant, skin friendly and superior liquid retention properties. It is soft and breathable which gives comfort and dryness. Cotton wicks away moisture and keeps skin dry and its pH compatibility makes it skin friendly. Organic cotton are cultivated from non-treated Genetically Modified (GMO) seed and is grown using method and materials having low impact on environment that is without any use of synthetic agricultural chemical such as fertilizer and pesticides. The crop needs to be certified by a certifying body or the USDA. As cotton fibre comes directly from nature, it degrade when disposed.

More, non-woven fabrics are also widely used for top sheet of sanitary napkins, such as hot air-through non-woven fabric, Thermal Bond Non woven Fabric etc. Those are also the most popular raw materials for acquisition distribution layer(ADL) of sanitary pads/menstrual pads. You can check Sana non woven fabric series products.

b) Absorbent core: It is interposed between top sheet and barrier layer main function is to absorb and retain the fluid. Moreover, to have comfort, absorbent core need to be thin, soft and pliable. The core was made up of wood pulp traditionally but there is constant effort to replace it by air laid wood pulp and SAP to improve its absorption efficiency. SAP turns the absorbed liquid into a jelly-like state so that it would not retract back.

Raw material for absorbent core: Wood pulp, super absorbent polymer, tissue paper, air-laid paper etc. Sana is able to provide all kind of absorbent solution for all our customers.

c) Barrier/back sheet: It seals the fluid from staining or leakages. It is a breathable but fluid impermeable film made up of polyethylene.

Raw material for barrier/back sheet: Widely used protective film in hygiene products are polyethylene and polyurethane, which are non-biodegradable plastic. This plastic material can be replaced by bio-based plastic prepared from starch.