Non-woven BOPP/PP Zipper Bags

Strength, durability, cost, and stretch make polyester material the most widely used in fabric structures. Polyesters that are laminated or coated with PVC films are usually the least expensive option for longer-term fabrications.
Laminates generally consist of vinyl films over woven or knitted polyester meshes (called scrims or substrates), while vinyl-coated polyesters usually have a high-count, high-tensile base fabric coated with a bondable substance that provides extra strength. Precontraint fabric is made by placing the polyester fabric under tension both before and during the coating process. This results in a weave that has increased dimensional stability.