PURUI HDPE Polyester Plastic Granules Manufacturing Process

               High efficiency automatic pelletizing machine ML series from PURUI is designed for recycling plastic PP,PE,HDPE,LDPE, LLDPE,PA66,PC,PET,OPP,BOPET,ABS and etc. which are widely used in making bags, film rollers, stretch film, shrink film, muti-layer film, T-shirt bag cut-offs; Foamed PE, sheet, food container, fruit net, cover, fiber, raffia, silk, yarn, woven bag, jumbo bag. One pelletizing machine can produce more than 10 kinds of plastic material.

--Belt Conveyor

As standard design, plastic scraps such as film, filament, raffias conveyed into the compacting room through belt conveyor; to handle rolls’ scraps, roll hauling off device is an optional feeding method. Motor drives of conveyor belt and hauling device cooperate with ABB inverter. Feeding speed of conveyor belt or roll hauling off is fully automatic based on how full the compactor’s room is. Metal detector can be combined with belt conveyor, and can interlock with contrl system, to warn and stop the system, in case that metal is found in feeding.

--Compactor / Agglomerator

The rotatory blades of compactor will cut up incoming scraps. Frictional heating which caused by high speed rotatory blades will heat and let scraps shrinking just below their agglomerating point. Optimal designed guide structure compacts the material and directs it into extruder screw. Crushes, dries and compacts the material which enables a fast and stable feeding from the compactor directly into the extruder.

--Extruder

A specialized single screw extruder applied to gently melt the pre-compacted material. The plastic scraps will be well melted, plasticized in a 36D processing section. With double-zone vacuum degassing system, volatiles such as low molecular and moisture will be removed efficiency, especially suitable to heavy printed film and material with water content.

--Melt filtration

The requirements on the filter technology depend on the characteristics of the input material as well as the planned use of final granules. Regular single-plate/piston double-station screen changer or non-stop double-plate/ piston four-station can be installed on the end of the extruder to present significant filtration performance.  We also have Laser Filter for now.

--Water-ring Die-face cutting system

Water-ring die-face/Strand cutting methods are usually adopted. In water-ring die-face cutting system, the rotary cutting blades will be pneumatically fit completely and closely to the die-face surface to ensure efficient cutting. Rotary speed of the blades is automatically adjusted by module system according to melt pressure at the die face. 

--Vibration drying system

Advanced dewatering vibration sieve combing with horizontal-type centrifugal dewatering present high performance dried pellets and lower energy consumption.Combine crushing, compacting and plletizing steps in one system, less-labor cost.Higher efficiency feeding, suitable to film, filament, raffia, foaming materials;Higher output and lower energy consumption

--Electric control system

One button “START”,One button “STOP”, lEmergency Stop. lProtection switch. Every operation position and rotary parts are equipped with limit switches for safety protection. lPrecise temperature control, optimized plasticization design, ensure reliable quality of granules. lProtection from over-heat in the compactor.

-- Pellets sample

PURUI PLASTIC&RUBBER MACHINERY CO.,LTD, specialized in the production and research of plastic granulator, plastic washing crushing drying equipment. The main goal of PURUI plastic&rubber machinery is to supply products of a constant high quality. Many years of experience and modern testing facilities guaranteeour customers top quality products. PURUI meet all these requirements with qualified, experienced, at the service of satisfied customers and successful corporate development through sustainable realisation of profits. Respected customers, we will treat our requirements seriously.