Teflon Belts Band Sealer is made by Teflon coated fabric, normally there are two types of belts used in this industry: PTFE sealing belt with overlap joint and two-ply PTFE belts. The with joint type made by one layer of Teflon coated fabric in thickness of 0.08mm, 0.13mm or 0.25mm, two ends of the belt are overlap by hot sealed to make the belt endless, normally overlap part is in 25mm and the joint area will be thicker. Two-ply belt is also called laminated belt which is made by two layer of fabric laminated together, the belt will be more durable, higher tensile strength and longer lifetime, the joint part is the same thickness as other parts of belt.