plastic PVC sheet board extrusion line

1, SJZ80/156 conical twin screw extruder 1 unit
Screw diameter: 80mm, 156mm
Screw design special for PVC blend, Max. extrusion capacity 350kg/h
Screw and barrel material are 38CrMoAlA with nitrided treatment
Screw nitrided layer thickness is 0.4-0.6mm, hardness is 740-940, surface roughness is less than 0.8um
Barrel nitrided layer thickness is 0.5-0.7mm, hardness is 940-1100, inner wall roughness is less than 1.6um

Barrel heating by ceramic heaters with stainless steel shield, 4 zones, total 36kw, cooling by fan with medium air, screw inner cooling by cycling oil system

Gearbox, transmission by helical gears, material 20CrMoTi, carburized and grinded, gears in distribution box material 38CrMoAlA, nitride, shaft material 40Cr, bearings by NSK, Japan

AC motor by Siemens , made in China, power 55kw
Inverter by ABB

Temperature control by Japan RKC, temperature surveying by thermocouple, with pressure indication, main electric components by imported name brand, like contactors by Schneider

Vacuum venting system
Vacuum pump power: 2.2kw

Automatic urgency stop protections:
1, overcurrent, overload
2, photoelectricity protection when screw displacing
3, oil shortage

Dosing feeder
Motor power 0.55kw, governor

Screw loader

Central height: 1100mm

2, T-die 1 unit
T type die head, clothes-hanger type melt flow sprue
Sheet width 1400mm, thickness 0.2-1mm

3, Roll stack 1 unit
Vertical type
Rollers
Roller 1 Φ1500mm*400mm
Roller 2 Φ1500mm*400mm
Roller 3 Φ1500mm*400mm
Type: two shells, with spiral flow channel inside
Material: 45# steel
Surface heat treatment: chrome plated, polished
Chrome layer thickness: 0.10mm
Surface hardness (after chrome-plated): HRC52-55
Surface roughness: Ra<=0.025um
Bearings NSK, Japan
Drive
Gearbox: Rexnord
AC motor, power 1.5kw
Gap adjustable between rollers
Up and down adjustment by hydraulic, slight adjustment by worm wheel and worm (manual)
Gap indication: micrometer
The clender to be installed on the rails, longitudinally moveable (by worm wheel and worm(manual or electric drive))
Rotational joint

4, Temperature control system for roll stack 1 unit
3 units individually
Cooling medium: soft water
Temperature control range: 35℃-100℃
Heating power: 12kw*3
Pump power: 3kw
Electromagnetic valve control

5, Roller bracket 1 unit
Length: 6m
Aluminum rollers, Φ70×1500㎜, with their surface oxidized, polished
Side trimming: three blades, opposite distance, position adjustable

6, Haul-off unit 1 unit
One pair of rubber rollers, size Φ250×1500㎜
Gearbox: Rexnord
AC motor, power 1.5kw
Inverter: Danfoss
Synchronization control with roll stack

7, Winder 1 unit
Type: by friction
Air shaft 3”

8, Electric control system
Electric cabinet vertical type
With vent
Main electric components are imported name brand
Extruder ABB
Temperature control RKC
Roll stack, haul off unit Danfoss
Contactors Schneider
Contactors(heating sections) Omron, SSR
Air switch schneider