HF Blister packing machine sales.Overview of PP packaging belt production line process for embossing machine

　　(1) The temperature control of the extruder body is from the first section to 120 ℃, from the second section to 170 ℃, from the third section to 220 ℃, and from the machine head to 250 ℃ to 280 ℃.

　　(2) The temperature of the cooling belt material after being discharged from the machine head is very high, and it should be immediately cooled in water because isotactic polypropylene is prone to forming a crystal structure under rapid cooling, and the crystal molecular structure is relatively loose. Easy to stretch orientation to obtain high-quality products. The cooling water temperature is generally controlled between 30 ℃ and 40 ℃, and the distance between the mold mouth and the water surface is preferably between 15 and 45 mrn.

　　(3) The purpose of stretching is to improve the longitudinal strength of the packaging belt and reduce elongation. Stretching must be carried out in boiling water, usually using one stretching, with a stretching ratio of 8-10 times.

　　(4) After embossing and stretching, the packaging belt passes through two patterned rollers and is then embossed with flowers

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