1.  Prepare the required masterbatch: Determine the granulation formula  according to the requirements of the product → Weigh the PE and the  auxiliary agent according to the proportion of the granulation formula →  Mix the mixing sequence according to the process requirements and the  mixing time in the internal mixer Mixing  → Put the mixed mass into the hopper of the granulator, extrude  according to the required extrusion process parameters and process flow →  air-cooled die face pelletizing, two-stage cyclone cooling → vibrating  screen screening and further cooling → Enter the storage tank → weighing → packing → labeling → storage. The  types of commonly used masterbatch are roughly classified into  crosslinked masterbatch, foamed masterbatch, filled masterbatch, flame  retardant masterbatch, conductive masterbatch, masterbatch, and the  like.

Second,  the preparation of the required master film: according to the  requirements of the product to determine the master production formula →  the weight of PE and the required masterbatch according to the  proportion of the production formula → into the mixer, mixing and  mixing, according to the requirements of the extrusion process  parameters and process Process  plasticizing extrusion → three-roll calendering → cooling trimming →  traction → winding → weighing → packaging → labeling → storage.

3.  Step heating foaming: Select the master piece according to the  production requirements → set the relevant parameters and process flow  according to the requirements of the foaming process → the mother piece  is first cross-linked through the preheating section of the foaming  furnace, and then foamed through the foaming section. →Cooling and setting → Correction → trimming → traction → static elimination → fixed length winding.

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