Double stage pelletizing line is especially good for the raw material which contain high moisture, high impurities.
The first stage extruder adopts exhaust type barrel screw, which can effectively de-gassing and eliminate the moisture and contamination;
And the second extruder usually adopts small L/D extruder, further plasticizing the material and filter contamination which can achieve stable extrusion.
Conveying feeding→ Metal detector →Film Agglomerator /Compactor →1# Degassing screw extruder →1# Hydraulic filer exchanger→2# screw extruder →2# Hydraulic filer exchanger→ Mould head →water ring cutting →Dewatering machine→ Air dryer Blowing system→ Storage hopper→ Finished product packing.
Detailed description of each items:
1. Conveyor: convey PP PE film or flakes into compactor.
2. PE film Agglomerator /Compactor: crushing and compress film, and feed compressed film into extruder forced, to make the production capacity high and stable.
3. 1# Extruding system: plasticizing material and exhausting gas.
4. 1# High speed Net exchanging system: filter material impurity, to make production more stable.
5. 2# Extruding system: plasticizing material.
6. 2# High speed Net exchanging system and Die-head: Second filter material impurity, to make production more stable.
7. water ring pelletizing machine: cutting pellets in water.
8. Water tank: cooling pellets.
9. Dewater machine: make pellets dry.
10. Vibration sieve: remove bad pellet and keep good pellet.
11. Air Blower: convey good pellets into silo.
12. Storage silo: keep pellet.
1. Allow free assembling of the screw component, based on raw material type.
2. Using the suitable die head for palletizing, such as water ring cutting, under-water cutting and hot face cutting.
3. High efficient force feeder ensures stable high capacity material feeding, low power consumption.
4. Main screw has vacuum exhaustion.
5. Water ring granulator machine, attached with dryer. 6. Single screw extruder, with specially designed screw, barrel, venting system, ensure the good quality of the final products.
7. Pelletizing style: standard cutting with extrusion mould. Even cutting ensures with good shape.
PP PE Film Double Stage Granulating Machine Applications:
Applicable plastic materials: PE, HDPE, LDPE, PP, BOPP, PET,PA/Nylon, etc
Material shapes: film, bag,fiber,rope scrap
Material types: rolls, loose, bundled
Material comes from offcut, industry defective materials, washed materials and printed materials .
Note: depending on different material properties, various downstream equipments are needed.