Kenneth Mechanical Engineering Technology(Suzhou) Co., Ltd

Kenneth has more than 20 years of experience on PVC compounding system. Our twin screw extruder is especially designed for processing PVC. We provide different size of screw&barrel, diameter is from 55 to 130mm. The durable and high efficient Kenneth PVC compounding pelletizing extrusion line is able to produce rigid PVC, soft PVC, medical grade PVC, uPVC, cPVC, with additives of foam or wood powders. We are pound to say the automatic PVC compounding line made by Kenneth is for sure the best choice for worldwide customers.
Processed Materials
uPVC, cPVC, Medical grade PVC, Soft PVC, Rigid PVC, Foam and wood powder additives.

Process Flow Diagram :
①Automatic dosing system ➜ ②Hot mixer ➜ ③Cold mixer ➜ ④Screw loader ➜ ⑤Buffer silo ➜ ⑥Force feeding hopper ➜ ⑦PVC extruder ➜ ⑧Die-face pelletizing system ➜ ⑨Cyclone ➜ ⑩Vibrating cooler ➜ ⑪Storage silo 

PVC resins and other raw materials are well mixed by hot/cold mixer combination. The free flowing dry blends are delivered by screw conveyor to PVC extruder for melt compounding and extrusion. The vacuum system of PVC extruder removes waste gas during extrusion. Melt streams are extruded from the die and been cut into pellets by a rotary cutter of the die face pelletizing system. Pellets are transported by air to cyclone and cooled by vibrating cooler. All cooled pellets are stored by storage tank.
Automatic Dosing System
The system consists of dumping stations for PVC resins and other compositions, pneumatic transportation system, weighting&metering unit, dust collectors etc. The automatic dosing system can weight&meter each micro ingredient precisely with an accuracy of 0.5% which ensure the formula dosing quality. The fully automated process not only saves labor cost but eliminates manual negligence during production.
Hot Mixer
Hot mixer is used as a pre-compounding equipment for blending PVC resins and additives to have a hot free flowing dry blends. The dry blends are then discharged to a cold mixer to cool the temperature to 40 degree C before going to the next procedure. The mixing speed of hot mixer and the feeding sequence of each raw material composition is adjustable according to different formula processing requirements.
Cold Mixer
Cold mixer is used as a batch cooler for hot mixer. The main function of a cold mixer is to cooling down the hot dry blends from hot mixer while ensure any agglomerations via low speed agitation. When the temperature of PVC dry blends dropped to the required level, cold mixer perform discharge. And screw loader will automatically transport the dry blends into a buffer silo for extrusion or storage.
Screw Loader
Screw loader is the most popular mechanical conveyor used to transportation of bulk materials. Here, the screw loader transports dry blends from buffer silo to the force feeding hopper. The rotating speed of screws is stable which makes materials feeding more smoothly.
Force Feeding Hopper
Force feeding hopper have a vertical agitator and a twin screw feeding mechanism which can actively keep dry blends flowing which effectively avoid bridging during material feeding. And the twin screw ensure the feeding efficiency of material.
Extruder Screw&Barrel
Kenneth selects the most suitable extruder screw&barrels according to customers’ material formulations. From alloy steel selection, machining accuracy to quality management, we have strict standard procedures to ensure good quality and long service life of these key parts.
Die
Kenneth estimates material properties and characteristics for selecting appropriate die material in combination with optimized runner design, that effectively avoids destruction on material properties due to excessive die temperature, uneven material flow rate, material jamming, excessive die pressure, decomposition and carbonization, etc. The die of the PVC extruder is designed with quick clamping in combination with linear guideway, making die open/close and die cleaning easy and fast.
Die-face Pelletizing System
The PVC pelletizing machine has a specially cutter hub, providing convenient cutter head dismantling and calibration.
Cyclone
Cyclone can separate air and pellets and perform initial cooling for pellets.
Vibrating Cooler
Vibrating cooler removes adhesive dusts and cools plastic pellets evenly and rapidly by mechanical vibration.
Storage Silo
The material of storage silo is stainless steel 304. There are different capacities of the silo available. Big bag filling system is also available as per request.
Features
1. Equipped with Automatic Dosing system
Kenneth developed automatic dosing system to satisfy requests of full line automation. It greatly saves labor and shortens production cycle while minimizing manual omits.
2. One-stop Full Aspect Service
Kenneth integrates complete plastic extrusion lines for customers worldwide. Our services include technical consulting, system integration, machine manufacturing, machine installation& maintenance. We simplify the process of building an extrusion line to make your work become easier and efficient.
3. Continuous Automation Control System
The PVC extrusion system is equipped with an advanced high level human-machine interface control system combined with the use of specific modules, including program detection control and synchronized proportional speed control to achieve continuous automatic control function.
4. High Throughput Performance
The screws&barrels of Kenneth’s twin screw PVC extruders are designed according to formulations. That’s why our machine not only can bring superb mixing behavior but also high throughput. The production capacity for soft PVC can be up to 1200kg/hr, and for rigid PVC can be up to 1400kg/hr. We are proud that our machines can let customers have a rapid return on investment.
5. Durable and Stable
The SHJ series PVC extrusion lines have become one of the most popular models among Kenneth’s pelletizing lines. The stable extrusion systems and outstanding capacity have earned good reputation from global customers.
6. Diverse Options
There are 9 models of our SHJ series co-retating twin screw extruders for different throughout requirements from low to high. Please contact us immediately for more product information.
Specification
Model Screw Diameter (mm) Screw L/D Ratio Screw Speed (RPM) Motor Power (kW) Single Screw Torque (N.m) Output (kg/hr)
SHJ-35 35.6 24-68 600 18.5 141 10~90
SHJ-40 41 24-68 600 30 229 90~150
SHJ-52 51.4 24-68 600 55 420 165~275
SHJ-65 62.4 24-68 600 110 840 330~550
SHJ-75 71 24-68 600 160 1222 480~800
SHJ-85 81 24-68 600 200 1834 800~1000
SHJ-95 93 24-68 600 280 2567 840~1400
SHJ-115 115.5 24-68 500 500 4584 1000~2500
SHJ-135 133 24-68 400 650 7449 1950~3250