As one of the core bonding materials in sanitary pad manufacturing, center-seam adhesive is primarily used to join the left and right body sections of the pad or to secure the folded wings. This ensures that the product maintains its structural integrity when unused and achieves a stable, secure fit once unfolded. Compared to other bonding methods, center-seam adhesive offers the following distinct advantages:
Precise Positioning to Prevent Misalignment
The central seam adhesive is applied with high precision using automated equipment, ensuring that the alignment error between the left and right sheets remains under 0.5 mm during the lamination process. This prevents the absorption zone from shifting due to misalignment, thereby safeguarding against any compromise to leak-proof effectiveness.
Easy-Tear Design for User Convenience
Utilizing a hot-melt pressure-sensitive adhesive with controlled peel strength, the design allows users to effortlessly tear open the central seam prior to use-without damaging the product's core structure or leaving behind any adhesive residue.
Enhanced Sealing and Leak Protection
The adhesive bond along the central seam forms a continuous seal line, effectively blocking the lateral spread of menstrual fluid along the center. Combined with the three-dimensional side guards, this significantly enhances overall leak-proof performance.
Maintaining Structural Stability
For sanitary pads featuring three-dimensional side guards or contoured flow channels, the central adhesive effectively maintains the 3D molded structure. This prevents flattening or deformation during transport and storage, thereby ensuring a rapid and precise fit against the body's contours during use.