Diapers, also known as nappies, are manufactured through a multi-step process that involves various materials and technologies. The manufacturing process may vary slightly depending on the type of diaper (disposable or cloth), but here is a general overview of how disposable diapers are typically made:
Absorbent Core Formation:
The absorbent core is the central part of the diaper responsible for soaking up and retaining moisture.
A mixture of superabsorbent polymer (SAP), wood pulp, and other absorbent materials is created. SAP is a key component that can absorb and retain large amounts of liquid.
The mixture is then formed into a thin layer and cut into individual absorbent cores.
Chassis Formation:
The chassis is the outer part of the diaper that includes the backsheet, topsheet, and elastic components.
The backsheet is typically made of a waterproof material to prevent leaks.
The topsheet is a soft and breathable material that comes in contact with the baby's skin.
Elastic components are added to provide a snug fit around the baby's legs and waist.
Assembly:
The absorbent core is placed between the backsheet and topsheet, and the elastic components are attached.
The components are cut into the desired shape and size.
Adhesive Application:
Adhesives are applied to various parts of the diaper to hold it together.
These adhesives secure the elastic components, attach the topsheet and backsheet, and create the final diaper structure.
