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Soft plastic pelletizing line

01 — Project introduction

Plastic film can be recycled and reprocessed into small pellets that are used to make plastic containers, crates, pipes, new plastic bags, and pallets.

Plastic film recycling is good for the environment and can generate economic income as a win-win solution.

02 — Applicable materials

Shopping mall shopping bags, vest bags, inner packaging bags, outer packaging bags, heat shrink film, plastic wrap, printed film, etc.

Raw materials: Printed and non-printed plastic film, plastic bag, non-woven fabric, plastic raffia, washed and squeezed films, materials with water content, and post-consumer waste materials, plastic flakes, etc. 

Pelletizing way: water-ring cutting, cold strand cutting, under water cutting all available from POLYTEC to meet different conditions of materials. Below use water-ring cutting as an example.

03 — Processing Flow

Conveyor belt, agglomerator/ compactor, extruder, pelletizing unit, water cooling unit, drying unit, storage silo.

04 — Technical characteristics


Screw diameter


Output (kg/h)

Power consumption





Rotating speed



05 — Advantages

06 — Unit Introduction

Belt conveyor

Transfer plastic waste such as films, silk, woven bags to the pellet; the feeding speed of the conveyor belt according to the fullness of the compactor by the inverter.


  1. The rotary blades at the bottom of the compactor and fixed blades on the wall cut plastic material into small flakes,Friction heat dries and pr-heats the flakes and makes them shrink .
  2. This combined process of cutting drying and compacting enable stable and effective feeding for small bulk density plastics .
  3. Inverter for compactor to adjust rotary speed of compactor ,meanwhile saves energy 10-15%.

Single screw extruder

High efficiency barrel and screw used for extruder with excellent plasticizing result and high output capacity. Adopt high wear resistant alloy material to ensure 1.5 times service life of normal one.


Comparative advantages of large area net changer and plate type net changer:

  1. larger filtration area 2-4 times, particle quality greatly improved
  2. lower energy consumption :40-70 per cent lower energy consumption
  3. the true meaning of no stop network without pressure fluctuations, water ring particles thickness more uniform.
  4. higher durability and tightness
  5. reduce filter mesh cost by 20% effectively
  6. effectively prolong the time of network exchange, save manpower, reduce waste of raw materials


New European design water ring pelletizer, cutting speed of pelletizer controlled automatically by PLC according to the pressure of die head, which could achieve the uniform size for output pellets.

Drying system

Centrifugal dryer match with hot air drying system

Smart Control cabinet

HMI PLC control: ergonomic touch screen, easy operation, high stability, low late maintenance cost

Recipe memory

Remote diagnosis and data transmission

High safety protection: to protect personnel safety and equipment safety

Emergency stop protection (equipment stop in emergency situations)

limit switch

Protect the shell

High-speed transmission parts warning reminder (yellow paint, sign)

07 — Customer case

PTC120 Compacting pelletizing machine in Sri Lanka

PTC100 Compacting pelleting line for HDPE bags in Gansu province, China

PTC185 Compacting pelletizing line 1000kghr for hdpe bags In Guangzhou city, China

Sinopec branch company Shanghai installed hdpe bag pelletizing line

08 — Why POLYTEC more suitable for your investment?

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