The synthetic fiber lifting belt is made of high-strength polyester or polypropylene industrial filament as raw materials, woven by an industrial loom. Due to its low moisture absorption, its wet strength is fundamentally the same as its dry strength. Its impact strength is 4 times higher than nylon and 20 times higher than viscose fiber. Good heat resistance, polyester suspender is made by melt spinning method, and the formed fibers can be melted by heating again, belonging to thermoplastic fibers. Polyester has a relatively high melting point, so polyester fibers have higher heat resistance and insulation properties. Good elasticity, with elasticity close to wool and wrinkle resistance surpassing other fibers, meaning the fabric does not wrinkle and has good dimensional stability. Polyester fabric has high strength and elastic recovery ability, making it sturdy, durable, wrinkle resistant, and wrinkle free.

When using synthetic fiber lifting belts near welding work, maintenance measures should be taken to avoid sparks and thermal radiation damage caused by welding and lifting belts. Maintenance should be carried out on lifting belts for rough or sharp edged loads. The lifting round belt and lifting flat belt cannot be knotted or tied together. Due to the damage caused by sharp objects and the inability to withstand high temperatures, it is recommended to use steel wire ropes for lifting operations in areas with dense steel reinforcement or welding attachments. Do not hang unsecured circular or flat lifting straps on the hooks of the crane to avoid the load falling off due to the slippage of the lifting circular or flat straps. Lifting straps should not be kneaded, and multiple lifting circular straps or lifting flat straps should be dispersed onto several hooks. Round lifting straps are a type of hanging equipment that can be loosened and wrapped around crane hooks. The prerequisite for doing so is that the lifting straps do not overlap and the hooks have sufficient space for use. The bundling and tying of lifting straps can effectively control heavy objects with proper sling usage.

If the synthetic fiber sling is severely worn, punctured, cut, or torn during use. The fibers of the lifting belt soften, age, reduce elasticity, and weaken strength. The rough surface of the fiber is prone to detachment. The lifting belt shows a dead knot. The surface of the lifting belt has excessive point like looseness, corrosion, acid and alkali burning, as well as thermal melting or burning. Lifting straps with red warning lines and exposed warning lines should be scrapped if any of the above situations occur.