Sanitary Napkins Raw Material: Key Components and Their Functions

# Sanitary Napkins Raw Material: Key Components and Their Functions

Sanitary napkins are essential personal care products designed to provide comfort and hygiene during menstruation. Understanding the raw materials used in their production is crucial for ensuring quality and functionality. This article explores the key components of sanitary napkins and their respective functions.

## 1. Absorbent Core

The absorbent core is the heart of a sanitary napkin, responsible for absorbing menstrual fluid. It is typically made from a blend of wood pulp and superabsorbent polymers (SAP). The wood pulp provides bulk and structure, while the SAP enhances absorption capacity by turning liquid into gel.

## 2. Top Sheet

The top sheet is the layer that comes into direct contact with the skin. It is usually made from non-woven fabric or perforated film, designed to be soft, breathable, and quick-drying. The top sheet allows menstrual fluid to pass through to the absorbent core while keeping the surface dry and comfortable.

## 3. Back Sheet

The back sheet is the outermost layer of the sanitary napkin, providing a barrier to prevent leakage. It is commonly made from polyethylene film or a breathable microporous film. The back sheet ensures that the absorbed fluid remains contained within the napkin, offering protection against stains and leaks.

## 4. Adhesive Strip

The adhesive strip is located on the underside of the back sheet and is used to secure the sanitary napkin to the underwear. It is typically made from a pressure-sensitive adhesive that is strong enough to hold the napkin in place but gentle enough to be removed without leaving residue.

## 5. Release Paper

The release paper covers the adhesive strip before use. It is usually made from silicone-coated paper or film, which allows for easy removal when the napkin is ready to be used. The release paper ensures that the adhesive remains effective until the napkin is applied.

## 6. Wings (Optional)

Some sanitary napkins come with wings, which are additional flaps that fold over the sides of the underwear to provide extra security and prevent shifting. Wings are typically made from the same material as the back sheet and are equipped with adhesive strips to keep them in place.

## Conclusion

The raw materials used in sanitary napkins play a vital role in their performance and comfort. From the absorbent core to the adhesive strip, each component is carefully selected and engineered to meet the needs of users. Understanding these materials helps in making informed choices and appreciating the technology behind this essential product.