coated films

Breathable backsheet film is a critical raw material for diapers and sanitary pads, serving to block liquids while allowing moisture to escape. Manufacturers often encounter issues such as skin irritation and moisture retention, film breakage, or failure to meet breathability standards—problems usually stemming from incorrect selection of raw material parameters. To evaluate the quality of breathable film, focus on three core indicators: Water Vapor Transmission Rate (WVTR), hydrostatic pressure, and tensile strength. A high WVTR allows for the rapid dissipation of internal heat and moisture, helping to prevent diaper rash in infants and reduce the discomfort of stuffiness during menstruation. Adequate hydrostatic pressure is essential to prevent side leakage, making it a mandatory standard for sanitary pads and overnight diapers. High tensile strength ensures the film withstands the rigors of high-speed production lines without breaking, thereby boosting manufacturing efficiency. Breathable films on the market generally fall into "high-breathability" and "standard" categories. Lightweight sanitary pads are best suited for thinner films with moderate-to-high breathability, whereas infant diapers and extended-length overnight products require a balance of high hydrostatic pressure and strong tensile performance. Some low-cost raw materials achieve higher breathability by reducing film thickness, which increases the risk of pinhole leaks; in the long run, this leads to higher post-sales losses and ultimately raises total production costs. We specialize in supplying breathable films, coated films, and wrapping films for hygiene products. We offer customization of basis weight, breathability, and waterproofing parameters based on the positioning of the client's end products. Every batch undergoes comprehensive testing for breathability, waterproofing, and tensile strength. Our products are compatible with domestic and international high-speed hygiene product lines, and we support everything from small-batch sampling to stable, long-term volume supply—providing a one-stop solution for raw material procurement challenges regarding diaper and sanitary pad backsheets.