PE/PP/ABS/PC/PVC/PS/PBT Nitridged Steel Mini Twin Screw Extruder Lab Plastic Pelletizing Machine
 
Yongjie laboratory mini extruder SJSL20 is widely used among our customers of universities, research center, and factory R&D department for the testing of formula, compounding etc.

There are two electric control type, PID centralized contrial and SIEMENS PLC touch screen control.

Quick details
Power:5.5kw
Screw diameter:21.7mm
Screw material:38CrMoAL
Barrel diameter:22mm
Barrel material:38CrMoAL
Output:around2-15kg/h

Dryer:0.26kw

Pelletizer:0.75kw
Cutting way: water strand, air cooling strand also available
Warranty:one year
Lead time:45 days after deposit
Heating power:16kw
Heating zones: 7zones
Barrel length:120*7=840mm
Control type:PID or PLC

Screw
Diameter:￠21.7mm
L/D:40:1
Direction of rotation: Co-rotating
Screw & elements: W6Mo5Cr4V2 (6542#) high speed tool steel that had been treated by the vacuum hardening process with the hardness of the surface is HRC58-62.Molding through dedicated grinding machine. The cleanliness is much better than products out of traditional process.
Core axle: High quality alloy steel 40CrNiMo that with high tenacity and durability. It had been treated by the hardening and tempering process.
 
Barrel
1). Structure: The first section works for main feeding, and the sixth section is set up for vacuum venting, the others are blocked.
2). Material: The material of the barrel 38CrMoAlA, surface hardness: HV950-1050, depth 0.5-0.7mm 3). Heating: Adopt multiple step format electric heating. All zones are cast copper heater. The total heating power is 16KW and the max heating capacity every section can reach
500℃.
4). Cooling: Adopt soft water cooling system in the barrel and tap water cooling way outside barrel. The circulation pipes are made of stainless steel and the water inflow regulating valves are stainless valves.
The brand of electromagnetic valve is DANFOSS.
5). Length: 120*7=840mm

 World famous brands of electronic components

1). Temperature control meter is Japanese RKC meter, intelligent type, double channel;

2). The inverter of extruder is ABB;

3). The low-voltage apparatus and the button adopt SCHNEIDER product;

4). AC contactor adopt SIEMENS product;

5). The main motor is SISMENS BEIDE;

6). The air switch adopts CHINT products. The solid-state relays are from American joint venture brand;

7). The electromagnetic valve: adopt Denmark DANFOSS product.

 Scope of supply 

Photo of Laboratory Mini Extruder 

Main technical data of various model of twin screw extruder pelleitizing machine