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Compounding extrusion pelletiz

All kinds of cable compounding granulating line Wire cable PVC compounding extrusion production line HFFR cable compounding extrusion pelletizing Semicon Shield cable compounding extrusion pelletizing XLPE cable compounding extrusion pelletizing Silane XLPE cable compounding extrusion pelletizing PE Communication cable compounding extrusion pelletizing

Engineering plastic modifying compounding pelletizing line Alloy modification---ABS/PC;PA/ABS;PPO/PS, etc compounding extrusion pelletizing production line. Reinforcement modification--PP, PA/GF (glass fiber), carbon fiber compounding extrusion pelletizing production line. Filling modification--PP, PA/talcum powder, CaCO3, Mica barium sulfate, etc compounding extrusion pelletizing production line Toughness modification--PC, ABS/elastomer, rubber, etc compounding extrusion pelletizing production line. Function modification co-compounding extrusion pelletizing production line.

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Compounding Extrusion Forming

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Upgraded One Step Process film casting forming line PVC Functional Film Compounding Extrusion Casting Forming Production Line EVA Solar Usage Functional Film Compounding Extrusion Casting Forming Production Line PP, PE Air permeable Film Compounding Extrusion Casting Stretch Forming Production Line Functional Film Compounding Extrusion Casting/ Leaching/Coating Forming Production Line

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Reactive Polymerization Devolatilization line

PVC Functional Film Compounding Extrusion Casting Forming Production Line

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Case description


Introduction:

PVC Casting film is produced by casting forming system with evenly compounded PVC polymer resin, plasticizer, stabilizer and etc. additives, and it is wildly applied in Various  packing material areas. Normal forming equipment for this PVC casting film is conical twin screw extruder or single screw extruder, yet each of the above extruders has its limitation:

  1. Conical twin screw extruder can provide certain compounding effect and can produce the film by direct extrusion. However, its compounding ability is weak, cannot produce high quality casting film and usually be used for low level product. For improving the final product quality, better formulation with higher cost can be applied but the final profit is reduced.

  2. Sigle screw does not possess compounding effect for PVC polymer resin and the additives, so it can only be used with compounded PVC polymer pellet and form the film by melting extrusion. PVC is a thermosensitive materials, multiple times melting will increase its decomposition, thusly lowering the casting film product performance. This single extruder method can only be applied for high plasticizer content non-transparent film product, less scope of application

 

Characteristics of the PVC casting film produced by CENMEN:

Regarding the compounding effect is the key for producing high quality PVC casting film, CENMEN using two stages extrusion technic to complete the compounding process for PVC polymer resin and additives. This method is capable of applying Various  PVC film formulation, and the final film product has a wide range of applications.

  1. Up stage twin screw extruder for heating the raw material to melt, and through the interaction of screw, the components are dispersed sufficiently and evenly, and finally a melt with good plasticization is formed. Fine compounding effect of the twin screw extruder improves the physical properties of the final casting film product, the exhaust vacuum system is also equipped with the extruder for effectively removing water vapor and volatile matter.

  2. Lower stage single screw extruder mainly provides transition and compress effect for the compounded melt from the up stage, then the melt will be extrusion casting formed to film by the forming system. Cooling water through the screw core shaft and the barrel provide temperature control for the melt, preventing high temperature causing material decomposition, effectively increasing the performance and appearance for the final film product.



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