PETD Mesh 4135 is a food-grade woven polyester (PET) single-silk mesh for pyramid tea bags in 41 mesh/cm, engineered for long-term value. Its near-zero 0.0013% water absorption keeps the film clean and stable, and its high melting point (230–250 degC) suits high-speed ultrasonic sealing on well-tuned machines. Best for granule and granular tea. Sold by the metre in rolls of 800–1,200 m; MOQ 1,000 m. Food-grade, BRC-certified factory; width, thread length and tag spacing customisable.