What Materials Can Be Used for Diaper Manufacturing?

Diaper Raw Materials

Non-Woven Fabric

Non-woven fabric is a crucial component of diapers. Common types include:

  • Spunlace Non-Woven Fabric: Formed by high-pressure micro water jets that entangle fibers to create a fabric with certain strength.
  • Thermal Bonded Non-Woven Fabric: Involves adding fibrous or powdery hot melt adhesive reinforcement materials to the web, which is then heated, melted, and cooled to solidify into fabric.
  • Hydrophilic Non-Woven Fabric: Mainly used for medical and sanitary materials, it features a better hand feel and does not scratch the skin, commonly used for the diaper’s top layer.

When choosing non-woven fabric, factors such as absorbency, breathability, softness, and durability need to be considered.

SAP (Super Absorbent Polymer)

SAP is a key absorbent material in diapers, capable of quickly absorbing and locking in large amounts of liquid. Specific types are not detailed in this conversation, but when selecting SAP, attention should be paid to its absorbency, absorption speed, retention capacity, and cost-effectiveness.

Adhesives

In the manufacturing process of diapers, adhesives are used to bond different layers of non-woven fabric and other materials. Common types of adhesives include:

  • Hot Melt Glue: Can be categorized based on raw materials, such as EVA hot melt adhesives and polyamide hot melt adhesives. Hot melt adhesives feature rapid curing, suitable for high-speed production lines.
  • Polyurethane Adhesives: Capable of bonding various materials and maintaining the physical and chemical properties of the materials at low or ultra-low temperatures.

When choosing adhesives, factors like bonding strength, curing speed, water resistance, and skin-friendliness need to be considered.

Elastic Materials

Elastic materials are typically used in the waist and leg areas of diapers to provide a snug and comfortable fit. Common elastic materials include:

  • Elastic Bands: Traditional elastic materials that offer good elasticity and recovery.
  • Elastic Non-Woven Fabric: Composite materials combining non-woven fabric and elastic fibers, offering the softness and breathability of non-woven fabric along with elasticity.

When selecting elastic materials, considerations should include elasticity, durability, comfort, and cost-effectiveness.

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