Hot melt adhesive in baby diapers and adult incontinence products plays a crucial role in material bonding, structural fixation, and functional realization, making it one of the core materials ensuring stable product performance.
As a non-toxic, odorless, and environmentally friendly plastic adhesive, hot melt adhesive is indispensable in the automated production of disposable hygiene products. It melts upon heating and is applied between different materials, then rapidly solidifies upon cooling, bonding the diaper. The entire process is solvent-free and pollution-free, meeting the high safety requirements of infant and adult care products.
Structural Bonding (Layer Lamination): Diapers consist of multiple layers, including a non-woven fabric outer layer, absorbent core, PE bottom film, and leak-proof sides. These materials need to be firmly bonded using hot melt adhesive. Hot melt adhesive ensures that the layers do not separate or delaminate during use, maintaining product integrity.
Elastic Band Fixation (Leak-Proof Design): Used to fix the leg elastics and waistband, making the diaper fit the body better and effectively preventing side and back leaks. This type of "elastic band adhesive" needs to possess high elasticity and creep resistance, maintaining its resilience even after prolonged stretching.
Adhesive Backing and Waist Tape Bonding: The adhesion of the lumbar Velcro (front waist tape) relies on hot melt adhesive, requiring strong initial tack and moderate peel strength, allowing for repeated pasting and adjustment without damaging the skin or clothing.