Introduction to the production process and characteristics of PP strappingIntroduction to the production process and characteristics of PP strapping
PP packing belt production process is as follows:
The first is the temperature control of the extruder (generally 250℃～280℃). The next step is cooling. After the material is taken out of the machine head, the temperature is very high. It is necessary to immediately enter the water to cool, because the isotactic polypropylene is prone to generate a crystalline structure under the condition of rapid cooling, and the molecular structure of the crystalline is relatively loose. It is easy to stretch the orientation and obtain high quality products. Then the stretching, the purpose of stretching is to increase the longitudinal strength of the strapping and reduce the elongation. Stretching must be carried out in boiling water, generally using a stretch. The last is embossing. The stretched packing belt is pressed onto the pattern through two patterned pressure rollers. Its function is to increase friction during use without slipping. It looks beautiful from the outside. The dust-free cloth manufacturer is You introduce.
1. Polypropylene (PET packing belt) is the main raw material, material: polypropylene wire drawing grade resin, because of its good plasticity, strong tensile strength at break, bending fatigue resistance, small density, good tensile impact performance, easy to use and other advantages, has now In various fields
is widely used. The characteristics of PP strapping are as follows:
2. Applicable to all kinds of strapping machines in all walks of life (semi-automatic, fully automatic, manual baler)
3. Dust-free cloth, strong adhesion, high tensile force, light weight, corrosion resistance, beautiful appearance and high grade
5. Bright color, with a variety of colors such as yellow and white ink, you can choose
6. According to customer requirements and samples, we can produce special packaging tapes such as printing and icon printing
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