The raw materials named above are also known as airlaid cores. Airlaid cores are used in the manufacture of feminine hygiene products (pads) and are the component which provides the essential character of feminine hygiene pads. The airlaid core is mainly composed of paper pulp which provides for the essential character of the material.

The absorbent core structure is called the airlaid core and is the subject of this analysis. Bodily fluids are acquired through the topsheet of feminine hygiene articles and subsequently stored in the airlaid core. The airlaid core is the material component which provides the essential character of the feminine hygiene article as this core performs the primary function / purpose of the product. The airlaid core is considered to be a composite material. Its structure includes three layers of materials.