HY-670B Double-Layer PP/PS Sheet Extrusion Line

II. MAIN PARAMETERS:

Target material	PP/HIPS/GPPS
Efficient width of sheet	680mm(adjustable)
Thickness of sheet	0.25～2.0mm
Tolerance of thickness	±0.01mm
Size of press roller	Φ350×780mm
Size of forming roller	Φ350×780mm
Size of fixed roller	Φ350×780mm
Maximum output	250-280kg/hr
General power	～110KW
Measurement of the entire machine	～12500×1850×2200mm

III.Configuration and specification:

1.       No.1 Main Extruder: one

a.       #250 model Hard-tooth Gearbox: one.

The body of the gearbox is made from cast steel. The teeth deal with grinding and peeling eventually, which provides different characteristics of damping, antifriction, low-noise, long using period etc.

b.      The screw

Material: high quality nitrided steel-38CrMoAlA

Nitration depth: 0.4-0.7mm, hardness≥940HV, fragility is 2 grades.

c.       Barrels

Material: high quality nitrided steel-38CrMoAlA

Nitration depth: 0.4-0.7mm, hardness≥940HV, fragility is 2 grades.

d.      Heating zones: 5 zones

e.       Barrel Heaters: The electric heater is made of casting aluminum with cooling fan. Every electric heater has a specially designed tunnel for heat radiating.

f.        Main motor power: 55KW, 6-gear, FC; rotary speed: 980r/min

g.       AC motor with an inverter control

h.      Screw diameter: 110mm

i.         L/D: 33:1

  
No.2 Sub Extruder: one

a.       #200 model Hard-tooth Gearbox: one.

The body of the gearbox is made from cast steel. The teeth deal with grinding and peeling eventually, which provides different characteristics of damping, antifriction, low-noise, long using period etc.

b.      The screw

Material: high quality nitrided steel-38CrMoAlA

Nitration depth: 0.4-0.7mm, hardness≥940HV, fragility is 2 grades.

c.       Barrels

Material: high quality nitrided steel-38CrMoAlA

Nitration depth: 0.4-0.7mm, hardness≥940HV, fragility is 2 grades.

d.      Heating zones: 4zones

e.       Barrel Heaters: The electric heater is made of casting aluminum with cooling fan. Every electric heater has a specially designed tunnel for heat radiating.

f.        Main motor power: 37KW, 6-gear, FC; rotary speed: 980r/min

g.       AC motor with an inverter control

h.      Screw diameter: 90mm

i.         L/D: 33:1

2.       Automatic Hydraulic Fast screen changer with double-sieve: one set

a.       Its special internal structure provides a excellent seal effect

b.      The parts of Screen Changer consisting the mould are made of alloy steel, which experienced heat treatment strictly.

c.       Control Method: by hydraulic station

d.      Motor Power: 2.2KW

             

  3.       Die-Head

a.       Material: super heat resistance alloy steel

b.      Structure: T-shaped, Clothes bracket flow channel, polished inner mold surface.

c.       The flows are plated chrome. And the flow surface is polished until it like mirror.

d.      The outlets of the mould can be adjusted with the adjustable screws slightly.

e.       There are 3 heating zones in the mould and 1 heating zones on the connections

f.        The heat means: heating inside by bar heaters

g.       The effective width of the die head: 800mm

4.       Vertical Three-Roller Calender Set: one

a.  Structure: the three-rollers calender lay on the round with 45° slantways

b.  Roll number: 3

c.  Diameter of roll: 350mm

d.  Roll length: 780mm

e.  Wall thickness of the roll: ≥25mm

f.  Roll surface treatment: 14 grade super treatment of mirror polishing.

g.  Gap adjustment between rollers: Diagonal block of screw adjustment

h.  Clamping and open-close: Controlled by Hydraulic Stati 
i.  Speed control method: by inverter

Temperature Controller (Thermostat) 2 sets

    It controls temperature of the three rolls separately. The temperature of the three rolls can be adjusted individually.

 

k.  Media: water

l.  The three rollers are controlled separately, that is, the rotation speed of the three rollers could be adjusted separately. Each roller is controlled by motor with gear box. The motor power: 2.2KW, rotation speeds: 940r/min. Gear box: 57.79  (Optional 2)

m.  Each motor with an inverter

n.  Self-lock style forward and backward movement system of the calender, which is controlled by 3-phase induction Motor(Output: 1HP, 750W)

o.  Sheet thickness checking meter

 

5.       Air cooling stand: one

a.       Number of the transmission rollers: 7

b.      Diameter of the rollers: 55mm*7pieces; 110mm*1piece

c.       Roller length: 780mm

d.      Roller surface treatment: plated chrome and half-mirror polishing

6.       Trimming unit: one

Slitting knife: 2pcs

7.       Haul off unit: one

a.       Haul off steel roller: one

Diameter of the roller: 180mm

Length of the roller: 780mm

Surface treatment: plated chrome and half-mirror polishing

b.      Haul off rubber roller: one

Diameter of the roller: 180mm

Length of the roller: 780mm

Surface treatment: coated erosion resistance, heat resistance and friction resistance rubber and polished.

c.       Motor: One unit (6-gear, 2.2kw, FC)

d.      AC motor with an inverter

8.       Double Working-Position Winder (One set)

Shaft number: two

   3" and 2" winding shaft,

   Control by a high-grade torque motor

9.       Electronic Control Cabinet: one set

10.   Waste Scrap Rewinder: 1 set

Machine Configuration

Machine Running Control	Frequency inverters	Rongxing, China
Temperature Control	Multipoint Temperature Control System	Yatai, China
Mini Relay			IDEC, Japan
Voltage Adjuster			Aoyi, China
Air Switch			SCHNEIDER, French
AC Contactor			CHNT, China
Button			Hongbo, China
Machine Running Control	Normal Motor		Gongtai, China
Gear Pump			Bate, China

Auxiliary Equipment of Extruder

No.	Name	Pictures	Parameter
1	Raw Material Autoloader		Feeding capacity:300kg/hr
			Tank volume:120kg
			Motor power: 1.1kw
			Pole length:3~5m
			Dimension : 0.95*0.66*0.84m
			weight:150kg
			Usage: auto-load raw material to hopper of extruder
2	110 mixer		hopper:1100mm
			output:700~800kg/h
			Motor power:2.2kw
			dimension:1.1*1.1*1.05m
			weight:125kg
			Usage: It is used to mix plastic granule or powder evenly.
3	650 crusher		Rotating blade :6pcs
			Fixed blade :4pcs
			Screen eperture: Φ12mm
			Effective caliber: 650*400mm
			Crushing capacity :750~850kg/h
			Motor power: 15kw
			dimension:1.35*1.7*1.9m
			weight:900kg
			Usage: It is mainly used to pulverize the waster and inferior.
4	25T water cooling tower		height:2.1m
			diameter:1.4m
			Water Discharge:2Inch
			Motor Power:0.55kw
			Weight:110kg
			Usage: cool the three rollers
5	Thermostat	1 set  (Only use for making PS sheet)	Heating power:6kw
			Heating rate:≥90%
			Temp. range: common ~100℃
			Temp. control error limit: ±2℃
			Water pressure:≥0.05MPa
			Pumping flow:4m3/h
			Pump power:0.75kw
			Dimension:0.8*0.42*0.95m
			Usage:The temperature of the three rolls can be adjusted individually