When using the strapping machine, we've always had different opinions and ideas about how to properly match the under tank and the under dryer. How can we achieve a more rational pairing? Today, let's discuss the issues between the two.

1. The function of the下水箱 is to ensure that the raw material polypropylene can immediately enter the water for cooling. The cooling process allows the initial mold to facilitate stretching in subsequent processes, as contact with air during the melting of raw materials at high temperatures can easily lead to oxidation and degradation. It is essential to cool it quickly to alter the molecular structure, which makes it more stretchable. The effectiveness of the cooling depends on factors such as the speed, water temperature, and the length of the water tank. 2. It is crucial to ensure that the material absorbs sufficient heat during the time it spends in the下烘箱. Otherwise, the surface will be difficult to soften, and the surface activation will be compromised, leading to uneven molecular orientation in the stretching process. The temperature the material experiences during this period should generally be below the melting point to ensure quality.

Here is the explanation of the matching issue.