Application of Facial Tissue Paper

Toilet paper must maintain integrity when dry (for handling) and wet (during use). Dry strength relies on fiber bonding via refining processes, while wet strength involves additives like polyamide-epichlorohydrin to resist tearing. Overly strong paper may clog plumbing, whereas weak sheets frustrate users. The "ply" system (1-ply to 4-ply) denotes layered constructions that enhance durability. Industry tests measure tensile strength and perforation resistance, ensuring products meet regional standards (e.g., 2-ply for heavy-duty use).