The Importance Of Private Label Diaper Backsheets

Jul 21, 2023 | News

The backsheet is a crucial component of any diaper as it acts as the outer layer barrier that helps keep wetness within the diaper and away from clothes. An efficient backsheet made of soft laminated diaper backsheet film is key to the performance, comfort and skin-friendliness of private label or branded diapers. Advanced backsheet materials and manufacturing technologies enable balancing key performance aspects like barrier properties, stretchability, breathability and softness as per requirements of private label and premium diaper brands.

Diaper backsheets are typically made of polymer films or nonwoven laminates that are designed to be impermeable to liquids while allowing respiration of air and moisture vapor. The backsheet material prevents leaks and keeps the inner absorbent layers dry. Advanced backsheet technologies offer features such as stretchability, skin-friendliness and breathability.

soft laminated diaper backsheet film

Common Types Of Korean Diaper Backsheet Materials

Plastic Film – Conventional polymers like polyethylene and polypropylene are the most widely used film materials for diaper backsheets due to their low cost and high barrier properties. However, they lack breathability and stretchability.

Breathable Film – Backsheet films made of polymers like Aloe or EVA incorporate tiny holes that allow moisture vapor to pass through while keeping liquids from leaking. They help prevent skin issues caused by trapped moisture.

Micro-porous Film – Films with micron-sized pores offer high levels of breathability along with excellent barrier properties for optimum diaper performance. They are commonly used in premium diapers.

Nonwoven Laminates – Combination of breathable polymer films laminated with stretchable nonwoven layers to provide better air circulation, superior stretchability and soft skin contact. Preferred for high-end diaper backsheets.

Elastic Laminates – Integration of elastic materials like spandex or elastane in the film or nonwoven laminate provides a stretchable outer cover that fits comfortably around baby’s legs.

Important Backsheet Properties For Diaper Performance

• Barrier Properties – Ability of the material to prevent liquid leaks while allowing airflow for optimal skin health.
• Stretchability – The extent to which the backsheet can expand and contract around baby’s movements for a comfortable and customized fit.
• Softness – Smooth, non-irritating surface that feels gentle against baby’s delicate skin.
• Breathability – Allowing flow of moisture vapor from inside the diaper to outside environment to avoid rashes and infections.
• Strength – Mechanical properties like tensile and puncture strength determine durability of the backsheet during use.
• Cost – Production costs play an important role in determining the price-point of private label diapers.

Backsheet suppliers utilize various technologies and material formulations to offer laminated film or nonwoven products that balance the above properties for high-performance diapers. Key manufacturing techniques include:

• Co-extrusion – Creating multi-layer films with a core layer for barrier properties and skin layers for softness and stretchability.
• Microporous Technology – Incorporating micropores in the film structure to achieve optimal levels of breathability.
• Ultrathin Film – Manufacturing extremely thin backsheet films below 20 microns for softness, comfort and less material usage.
• Elastic Lamination – Bonding elastic materials into the film or nonwoven substrate to provide efficient stretchability.