The main function of hot melt adhesive used in baby diapers (including adult incontinence products) is to bond various material layers, ensuring the integrity of the product structure, a comfortable fit, and leak-proof breathability.
Interlayer bonding: Securely bonds different materials such as non-woven fabric, PE bottom film, elastic bands, and Velcro to form a complete diaper structure.
Improved fit and comfort: Precise application of hot melt pressure-sensitive adhesive allows the diaper edges (such as leak-proof edges) to fit the skin flexibly, reducing side leakage.
Ensuring production efficiency: Hot melt adhesive cures quickly and has high bonding strength, suitable for high-speed automated production lines, improving manufacturing efficiency.
Controlling breathability: Proper control of hot melt adhesive usage and coating method reduces clogging of the bottom film pores, maintaining the diaper's breathability.