Strapping tape is a product made primarily from materials like PET, PE, and PP, which are extruded and stretched to form a single layer. The PP strapping tape, in particular, is a lightweight, environmentally friendly option, primarily used with fully automatic, semi-automatic, and manual strapping machines. It is ideal for securing lightweight boxes or pallets weighing up to several hundred kilograms. Meanwhile, PET strapping tape has become a popular, versatile eco-friendly packaging material that can replace steel wire and heavy-duty PP strapping, now widely used in binding and packaging across various industries.

Using the production process of PP strapping as a case study, the first step is to control the extrusion exit temperature, which should neither be too high nor too low. Next comes the cooling phase, where the material exit temperature is relatively high and must be immediately immersed in water for cooling. This is because polypropylene forms an amorphous structure in cold water, which, when stretched, yields high-quality products. This enhances the longitudinal tensile strength of the strapping and reduces elongation. The stretching process should be carried out in boiling water, performed in one go. Subsequently, we apply a pattern. After stretching, the strapping passes through two patterned rollers, imparting the design. This increases friction and prevents slippage, while also being aesthetically pleasing from the outside.