The selection of hot melt adhesive for sanitary napkins requires comprehensive consideration of bonding performance, production compatibility, safety and hygiene standards, and cost-effectiveness. The following is a purchasing guide based on industry practices and standards.
Sanitary napkin adhesive is a hot melt pressure-sensitive adhesive. Its core performance lies in peel strength, meaning the adhesive force must strike a balance between "strong adhesion" and "easy peeling."
Insufficient adhesion can easily lead to product shifting and detachment during use.
Current national standards specify quantitative parameters for the peel strength of the adhesive backing to ensure that the product is firmly bonded without leaving adhesive residue on underwear. When purchasing, suppliers should be asked to provide test reports that comply with current national standards (GB 15979-2024, etc.), and attention should be paid to their actual test data on common underwear materials such as cotton and blended fabrics.
Hygiene and Safety Standards: Meets Disinfection Grade Requirements
For products with higher hygiene standards (such as disinfection-grade sanitary napkins), the hot melt adhesive used must meet relevant specifications.
Material Safety: Disinfection-grade sanitary napkins must undergo sterilization treatment with ethylene oxide or ionizing radiation to achieve strict microbiological indicators such as "zero fungi."
The hot melt adhesive used must be able to withstand such sterilization processes and not produce interfering or harmful residues.
Biocompatibility: As a component of the product, the safety of the hot melt adhesive needs to be assessed through vaginal mucosal irritation tests, skin sensitization tests, etc.
When purchasing, suppliers should be requested to provide relevant Material Safety Data Sheets (MSDS) and biocompatibility test reports.