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Ruian Huarui Plastic Machinery Co., Ltd.

Heat Shrinkable Film Extruder, Shrinkable Film Extruder, Heat Shrinkable Film Machine manufacturer / supplier in China, offering Blown PE Heat Shrinkable Film Extruder with Inverter Motor and Friction Rewinding Machine, PVC Heat Shrink Film Blowing Machine, PE Heat Shrink Film Extruder and so on.

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Supplier Homepage Product Film blowing machine Blown PE Heat Shrinkable Film Extruder with Inverter Motor and Friction Rewinding Machine

Blown PE Heat Shrinkable Film Extruder with Inverter Motor and Friction Rewinding Machine

FOB Price: US $80,000-100,000 / Set
Min. Order: 1 Set
Min. Order FOB Price
1 Set US $80,000-100,000/ Set
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Production Capacity: 120 Kg/H
Transport Package: Wooden Packing of Sea Transportation
Payment Terms: L/C, T/T, Western Union, Paypal, Money Gram, Weixin pay

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Basic Info
  • Model NO.: HRSJ50-80
  • Plastic Processed: PE
  • Feeding Mode: One Feed
  • Screw: Single-Screw
  • Screw Channel Structure: Deep Screw
  • Automation: Automatic
  • Film Shaping Guide Rolle Sheft: Air Ventilation Controller
  • Screw and Barrel: 38CrMoAl Nitride Finished
  • Heating System: Cr20ni80 Mica Stainless Steel Heater
  • Switch or Contactor: Solid State Relay(SSR)
  • Air Ring: Rotating Air Ring
  • Trademark: Wity
  • Origin: Zhejiang
  • Type: Sheet Extruder
  • Product Type: Extrusion Molding Machine
  • Assembly Structure: Integral Type Extruder
  • Engagement System: Full Intermeshing
  • Exhaust: Don′t Exhaust
  • Computerized: Computerized
  • Temperature Controller: K Type Thermocouple
  • Winding System: Double Winding
  • Blowing PE Film Width: 600-2000mm
  • Die Head: Rotation Type
  • AC Motor: Inverter Motor
  • Specification: CE ISO
Product Description
Blown PE shrinkable film machine
 

 Part 1. Gearbox of blown PE shrink film machine

 
Blown PE Heat Shrinkable Film Extruder with Inverter Motor and Friction Rewinding Machine

Overview of blown PE shrink film machine gearbox:

Our gearbox of blown film extruder series is designed for screw extrusion equipment of high precision, hard tooth face with thrust transmission device.Product design USES various technical specifications provided by JB/T9050.1-1999.

Gearbox of blown PE shrink film machine main features:

1, the gear reducer of blown PE shrink film machine for high strength steel alloy & carburizing steel, gear grinding after carburizing and quenching heat treatment processing, 6 levels of precision, high precision gear, gear hardness HRC54-62, low transmission noise.

2, gearbox of blown PE shrink film machineequipped with high bearing capacity of thrust, reliable performance and can bear big axial thrust.

3, in addition to the individual small specifications products, all configuration has forced lubrication and water cooling system.

4, series gear box body are processed in the six sides.

5, the gearbox of blown PE shrink film machine transmission efficiency, low noise, can run for a long time.

6, blown PE shrink film machine bearing adopt chinese famous Wafangdian brand almost 100 years brand.

Part 2. Screw/barrel of blown PE shrink film machine


Blown PE Heat Shrinkable Film Extruder with Inverter Motor and Friction Rewinding Machine
Overview of screw and barrel 
of blown PE shrink film machine:

Production of all kinds of screw, barrel, strict selection of high quality alloy steel as raw material, using the latest technology and elaborate processing and testing equipment, to ensure the production of precision and quality, and has long service life and good abrasion resistance, corrosion resistance.The barrel is equipped with water cooling system.

Screw and barrel of blown PE shrink film machine main features:

The screw material of blown PE shrink film machine: 38CrMoAl Nitride / 42CrMo intermediate frequency quenching + electroplating
42CrMo bimetallic PTA + electroplating.

Barrel material: 38CrMoAl Nitride / 42CrMo bimetallic alloy PTA inner hole casting.

Surface roughness:Ra0.4 um

Nitriding hardness: HV 900 , alloy layer thickness 2 mm

Hardness: HRC58, Nitriding depth: 0.5-0.8 mm

Nitride brittleness2 level, Chrome plating layer thickness: 0.03-0.05 mm

Part 3. Heater of blown PE shrink film machine


1. Cast aluminum heater of blown PE shrink film machine features:

Conditions: the environment temperature 20 ºC ~ + 60 ºC; relative humidity< 80%

Electric strength: passed by 1500V50HZ sinusoidal AC voltage withstand voltage test, when the pressure reach to 1M1N, no breakdown phenomenon.

Leakage current: < 0.5 MA

Insulation resistance: 2MΩ

Grounding resistance: < 0.1 Ω

Power deviation: + 5% ~ -10%

Heat resistance: installed on the machine surface temperature almost up to 400 ºC.

 
2.          2. Stainless steel heater 
of blown PE shrink film machine features:

1. Cr20Ni80 mica heater or thermal system is the heating element, adopt natural mica powder or synthetic mica plate for insulation, outer metal is stainless steel.

2. It is portable mica heater but warming faster.

3. Mica heater shell is made of 0.3 ~ 0.5 mm stainless steel plate, and the middle core the is made of high insulation resistance and anti-high-temperature mica plate, in which evenly around a variety of standard specifications of nickel-chromium alloy resistance wire as a heating element, be processed into various shape by the molding machine.
 
4.According to the connection mode of user demand, voltage from 110 v, 180 v, 220 v, 380 v, the highest power load reach to 3.5 W per square cent meter.

5. The sintering infrared radiating surface save electricity 35%. Mica stainless steel heater Is ring type.

6. It is simple, reliable and easy to use, feature fast temperature rise, high thermal efficiency, small power consumption and long service life etc.

3. Cooling fans of blown PE shrink film machine barrel


2nd and the 3rd zones of the screw and barrel are equipped with cooling fans as below picture.

Part 4. Rotating die head  of  blown PE shrink film machine


Blown PE Heat Shrinkable Film Extruder with Inverter Motor and Friction Rewinding Machine

Rotating die head 
of blown PE shrink film machine features


1.Temperature control sensor: 2 points

2. Material: it is made of medium carbon steel S45

3. Adopt strict and tempering heat treatment process and the CNC lathe precision machining, to ensure that each part of die head processing precision is high.

4. Electroplating: the whole die head with environmentally friendly alloy electroplating, plating is more uniform, ensure that the die no dead Angle, die flow easier to clean up, die head is more durable, and the production of thin film surface brighter and higher quality (or according to customer requirements, the hard chromium electroplating).
 
Rotating die head 
of blown PE shrink film machine process


Blown PE shrink film machine die head is made up of die bodies (die core, die barrel and die ring) and heater (heating coil).

1. select right material, it is to choose the corresponding materials, for example middle carbon steel S45 .

2. forging, forging the ingredients into a mold of coarse embryos, as part of the more compact the molecular structure of the forging parts of the embryo.

3. The lathe processing, according to the die design drawings of the die head, a lathe processing, as far as possible with high precision lathe, and master skilled lathe technicians.

4. polished the flow way part of the mould after machining by lathe, the better smooth of surface of flow way, the better blown film quality, and the less the defect lines of film.

5. hard chrome electroplating in flow way after polishing, which increase the wear resistance and corrosion resistance, and make the mould is not easy to damage and not easily get stranded.

6. finally, install the die head, combined with heating coil parts.
Blown film co-extruder die head contrast test many times to choose optimal shapes, feature large inner pressure, uniform extrusion stability, better performance of strength of film, no slot with extruder etc. And changes of the proportion of mixture and the recycle material, blown film extruder do not need to replace the die head.
The below pictures are our rotating die head, and rotating die head diameter is ¢850mm .

How to adjust the die head of blown PE shrink film machine

1. If the die head is covered from top to bottom, loose or release the screw on the thick edge, and tight the screw on the thin side.

2. If the die head open under bigly, and put the die head in above, loose the screw on the thin side, and tight the screw on the thick edge.

3. Die head with four or six adjustment bolt which generally is hex socket, adjust on the edge of upper part of the die head.

Part 5. Rotating air ring  of blown PE shrink film machine 


The rotating die head and air ring of blown PE shrink film machine:

Rotating die head with double tuyere air ring, wind pressure is very strong, the wind ring is cooling fast, so you can speed up the main motor and increase production, also has benefit of thickness deviation.

The rotating die head diameter is ¢850mm .

How to adjust the die head of blown PE shrink film machine

1. If the die head is covered from top to bottom, loose or release the screw on the thick edge, and tight the screw on the thin side.

2. If the die head open under bigly, and put the die head in above, loose the screw on the thin side, and tight the screw on the thick edge.

3. Die head with four or six adjustment bolt which generally is hex socket, adjust on the edge of upper part of the die head.

How to clean the die head of blown PE shrink film machine

Step No. 1. Paint the die head with available paraffin or methyl silicone oil.

Step No. 2. Wipe the paste waste material gently with 1000 mesh sand paper until clean.

Step No. 3. According to the material property, adjust temperature while changing different material because of heating temperature difference of virgin and recycle material, increasing extrusion amount to extrude paste material after replacement of the filtering screen.

Step No. 4. The key is to add methyl silicone oil into the hopper in the process of production within a week, which lubricates the screw, barrel and die head, also clear die head meanwhile.

The rotating die head and air ring of blown PE shrink film machine:


   Rotating die head with double tuyere air ring, wind pressure is very strong, the wind ring is cooling fast, so you can speed up the main motor and increase production, also has benefit of thickness deviation.

Part 6. Film shaping guide roller of blown PE shrink film machine

Film shaping guide roller of blown PE shrink film machine

Film shaping guide roller of blown PE shrink film machine is made up of shaping ring and shaping bar. And shaping bar of shaping guide roller is adjustable , and stabilizing bubble frame structure has big adjusting range. It is convenient to operate and adjust, with stable bubble tubular film, create conditions for winding roller.


Part 7. Film winding system of blown HDPE or LDPE film extruder 

Overview of film winding system of blown PE shrink film machine:

Film thickness is controlled by changing the proportion of the speed of the motor, inverter steady speed is precision, leading to speed stability, and uniform film thickness. Two clip roller and winding roller adopt tension control, the tension of different materials requirements is different, the tension of the rollers should be adjusted independently. Rewinding axis is leaning on the winding roller, relying on the winding roller's friction to drive the rewinding axis rotation, thus the material tension has nothing to do with the coil diameter

Benefit of film winding system of blown PE shrink film machine:

The tension is produced by differential speed and frequency converter work under the mode of open loop vector control speed, fast dynamic response, overcome the smaller torque motor speed tension and larger deceleration tension.

The motor constant torque output as speed control. While the linear velocity and tension is constant, the winding roller speed keep constant too, will not be changed by the changing of coil diameter and load line, so overcome faults of constantly adjusting the motor output torque from empty to full volume process, in order to maintain a constant tension.

System is easy to manipulate.

Part 8. Main motor of blown PE shrink film machine  

If your motor overheat phenomenon occur, I think that it might be caused by 2 reasons:

1. The motor is overload, power is not enough.

2.  The motor of blown PE shrink film machine fan wiring is wrong, the fan motor correct wiring is separated from the main motor wiring, whenever the main motor speed is low or high, the fan power is strong power enough, otherwise, if the fan motor wiring is from the same connection of power supply, fan motor speed and main motor speed work synchronously, the main motor certainly overheat.

All of our fan motor wiring is separated from the main motor.

Benefit of blown PE shrink film machine:

The tension is produced by differential speed and frequency converter work under the mode of open loop vector control speed, fast dynamic response, overcome the smaller torque motor speed tension and larger deceleration tension.

The motor constant torque output as speed control. While the linear velocity and tension is constant, the winding roller speed keep constant too, will not be changed by the changing of coil diameter and load line, so overcome faults of constantly adjusting the motor output torque from empty to full volume process, in order to maintain a constant tension.

System is easy to manipulate.

Part 9. Clip board or nip bar of blown PE shrink film machine
 
Tractors of blown PE shrink film machine is made up of towing, clip board or nip bar, traction roller and traction motor, the unit of traction adopts electromagnetic slip type mechanism, driven two pairs of drawing roller through gear parts, and the rewinding roller meanwhile. Clip board or nip bar is fixed on the shelf, the adjustment of inclined angle of clip board or nip bar can be adjusted freely according to the blown film thickness.

Part 10. Rubbe roller of blown HDPE or LDPE film extruder 

The roller which will have deep lines so that it opens LDPE film during work. It is equipped with a few such rollers on my machine. If the film is very thin and it can not get together during work.

Two pairs of traction roller of blown PE shrink film machine consists of rubber roller and alloy steel roller, can effectively prevent the air to escape and ensure the smooth progress of the coil rewinding. Traction frame adopts assembly structure, outfit is convenient to tear open, which is advantageous to the transportation loading and unloading.

Take-up device of blown PE shrink film machine adopts the center winding of the effective mechanism, and keeping the constant tension, friction piece is driven by sprocket, and the big gear is driven by friction piece, to drive the winding shaft, so as to ensure the re-winder works smoothly while the winding diameter changes from small to big, the friction force can be controlled by adjusting the spring-loaded of edge.

We adopt nitrile rubber roller, also you can choice the Polyurethane and Silicone rubber roller, but we recommend nitrile rubber, because it is of high quality and inexpensive.

The motors of blown PE shrink film machine have separate cooling fans with 380V. These are more powerful motors of fans. They are of high quality.

Our fan motor wiring is separated from main motor.      
        

Part 11. Inverter of blown PE shrink film machine
 
Inverter of blown film extruder feature:

1. Inverter of blown PE shrink film machine can smooth speed regulation in a certain range, by adjusting the rotational speed of main motor, traction motor to produce different film products;

2. Smooth start and stop, because the plastic extruder is the constant torque load, smooth start and stop is to avoid too much of a mechanical shock, on the other hand also can reduce the start-up process of unqualified products;

3. Run a single direction of motor;

4. Stable performance, reliable work.

Part 12. Electrical components of blown PE shrink film machine

1. K type thermocouple refer to nickel chrome - nickel silicon thermocouple, which is a type of inexpensive thermocouple to measure high temperature.Because of this alloy has good high temperature oxidation resistance, can be applied to oxidizing or neutral medium.It can measure the high temperature of 1000 degrees for a long time, short-term measurable to 1200 degrees.

It cannot be used for reducing property medium, otherwise, it will be corroded soon, in this case can only be used under 500 degree measurement.

It is much cheaper than other thermocouple, its repeatability is very good, the thermoelectric potential is large, thus the sensitivity is high, and it has a good linear property. Although the measuring accuracy is slightly low, but can satisfy completely the requirements of industrial temperature measurement, so it is the most commonly used on industrial thermocouple.

2. Solid state relay(SSR) of blown PE shrink film machine

Our switch adopt Chint and Delixi. 

Solid state relay (SSR)with isolation function that is non-contact electronic switch, no mechanical contact parts in the process of switch, so solid state relay is also compatible with logic circuit besides has the same function as electromagnetic relay, resistance to vibration and mechanical shock, install location is unrestricted, has the good performance of moisture-proof, mildew corrosion resistance, the performance in terms of explosion-proof and prevent ozone pollution is also good, small input power, high sensitivity, small control power, good electromagnetic compatibility, low noise and high working frequency etc.

Advantages of solid state relay

(1) Solid state relay feature high life and high reliability. There are not mechanical parts or mobile parts in solid-state relay contact, so they can work stably in high shock, vibration environment, due to the inherent characteristics of composition of the solid state relay components, determines that they are long life and high reliability of the solid state relay.

(2) The solid state relay feature high sensitivity, small control power and good electromagnetic compatibility. Since solid state relay has featured wide input voltage range, low driving power, solid state relay can be compatible with most of the logic integrated circuit which does not need to add buffer or drive.

(3) Rapid transformation: solid state relay switching speed can be from a few milliseconds to a few microseconds because of using solid state relay.

(4) The electromagnetic interference is small.

3. DC motor regulator and DC motor. We can offer the high quality DC motor and DC motor regular.

Part 13. Air ventilation controller of blown PE shrink film machine

Air ventilation controller of blown PE shrink film machine

Micro mobile parts of air ventilation of blown PE shrink film machine controller is fixed on the bubble shelf which is equipped a lot of film shaping guide roller, air ventilation controller is connected with main motor of wind ring. Micro sensor is fixed on the top of the blown film. Micro mobile parts of air ventilation controller need to get a fixed pole.
Film air bubble size is related with internal inflatable pressure of tubular film, and has nothing to do with external cooling.

Cooling air volume is related with the position of blown film air bubble which located up and down. The bigger of cooling air volume, the blown film air bubble down the farther. The smaller of cooling air volume, the blown film air bubble up the farther.

Part 14. Optional device of blown PE shrink film machine

1. Auto loader of blown PE shrink film machine

This is blown PE shrink film machine Auto material feeder loader, which will mix HDPE, LLDPE, Pigment well and will load.

 
Configuraton list 
  
Temperature controlK type thermocouple7units
Painted colorGreen/whiteGreen/white
Traction system Embossing rubber roller2 unit
Traction structureFixed typeFixed type
Rewinding roller length3200mm600-1500mm
Traction motor3.0Kw inverter1 unit
Traction speed(m/min)0~1000~100
Clip board or nip barPaling type1 unit
Film shaping guide roller moduleVentilation controller1 unit
Roller guide roller diameter450mm1 unit
Rewinding structureDouble rewinding1 unit
Rewinding wayFriction torque rewind2 units
Die headRotation type 2 layers1 unit
Air ring Rotating double tuyere 1 unit
Blower5.5kw1 unit
Barrel cooling wayRecycle water cooling1 units
Electrical componentsChint or DELIXIParts of these
Switch boxIndependent distributorset
Forming ringAdjustable1 set
Hex socket wrenchAll kind of size1set
Tool kitPackage kitset
Filtering screen1000 mesh5 piece
Plastic soft pipe12 piece1 set
OilerGeneral1 set
Open wrenchVaries size1 set
 
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