A wet strength agent is a chemical additive used in the papermaking industry to enhance the strength and durability of paper when it is wet. These agents form bonds between the fibers within the paper, significantly increasing its wet tensile strength, which is essential for paper products that are exposed to moisture or liquid during use (e.g., paper towels, napkins, sanitary products). Wet strength agents are particularly useful in improving the performance of paper products in wet conditions, preventing tearing and maintaining integrity when wet.
