PP / PS / EVOH Sheet Extrusion Line

The PP PS sheet extrusion line developed by Jwell is used to produce multi-layer composite environmentally friendly sheets. The sheet mainly blisters various food containers and packaging, such as trays, noodle bowls, lunch boxes, cake boxes, and fruit trays.

The equipment can effectively use the proportion of stone powder, reduce the cost of sheet material, improve the degradability of the sheet, and ensure the comprehensiveness of the sheet.

PP PS feature introduction and industrial application

PP——polypropylene is a kind of lightweight thermoplastic synthetic resin with excellent performance, chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties, and good wear-resistant processing properties.

After PP undergoes chemical modification, physical modification, and transparency modification, the colorability, processability, and impact resistance will become better.

PP has a wide range of applications: fiber products (clothing, blankets), auto parts, chemical containers, food, and drug packaging, etc.

PS-polystyrene, including ordinary polystyrene, expanded polystyrene (EPS), high-impact polystyrene (HIPS), and syndiotactic polystyrene (SPS).

Ordinary polystyrene is a colorless and transparent particle with excellent heat insulation, insulation, and transparency, and easy to color.

Application areas: building materials industry, automobile industry, packaging industry, etc.

PP sheet has high transparency, good barrier properties, low density, non-toxic and hygienic, and can be recycled and will not produce toxic and harmful gases when heated and burned.

Mainly used for packaging and stationery of food, medicine, medical equipment, etc., such as processed jelly boxes, dairy product packaging boxes, cold drink containers, fast food boxes, microwave oven appliances, stationery tablets, folders, etc.

PS is similar to PP in performance, and it also performs well in food packaging. Because of its low static electricity generation, it is mostly used in electronic product packaging.

PP PS sheet extrusion line model selection

In the current market, the PP PS sheet extrusion line is mostly single-screw models, because the equipment cost is much lower than that of twin-screw models.

Jwell’s PP/PS single-screw model has stable feeding and can plasticize the raw materials well under a variety of different formulations, ensuring the toughness of the sheet and avoiding the easy heat forming of the sheet in the later stage. Problems such as cracking and uneven color.

In the production of PP sheets, the Jwell single-screw model is currently capable of stable production up to 1.5 tons per hour.

Although the cost of the twin-screw model is higher, it is better than the single-screw in other aspects.

Twin-screw, the design flexibility of its thread structure is stronger, which ensures the extruder’s feeding, and at the same time makes the formula material have better dispersion in the barrel, and the sheet material will be more uniform.

PP PS sheet extrusion line equipment features

1.Whether it is a single screw or a twin screw, there is a design that meets the production of PP and PS at the same time.

The single-screw machine lengthens the ratio of length to diameter and increases the vacuum exhaust;

The twin-screw machine adds a vacuum system to ensure the full discharge of material water vapor and ensure the performance of the sheet.

2.The winding adopts two structures of traditional winding machines or a fully automatic winding machine to meet the needs of customers for ordinary small-volume production and large-capacity production, and directly help customers reduce labor costs.

In addition, the fully automatic winding machine has no jamming in the cutting of thick sheets, and there is no phenomenon that it cannot be wound.

3.The efficient and stable control system makes the pressure and speed of the PP PS sheet extrusion line more stable.

The precise control system makes the equipment more comfortable in improving the output and performance of the equipment.

PP PS sheet extrusion line control system

The PP PS sheet extrusion line adopts Siemens frequency conversion, servo control, and Ethernet transmission technology control to achieve high efficiency, high precision, high stability, and high safety.

The 100M/s high-speed network transmission reduces the error caused by the transmission between the control system and the drive and makes the equipment more efficient.

HMI man-machine interface, centralized control system, realizes one-screen browsing of the whole machine system parameters, such as current, pressure, speed, temperature, etc., making the operation easier.

Structure composition of PP PS sheet extrusion line

J-type three-roll stand-alone sheet machine production line:

The unit is mainly composed of a host, a screen changer, a melt pump, a mold, a tablet press, a conveyor table, a tractor, a cutting machine or a winder, etc.;

The reduction box body is made of cast steel, the gears are made of alloy steel, and have been ground teeth. The lubrication points in the box body are all forced to lubricate. The lubricating oil is equipped with a cooling water system.

The screw material is made of 38CrMOA1A nitrided steel, which has been nitrided, and the surface is sprayed with alloy.

The material of the barrel is 38CrMOA1A nitrided steel, which has been nitrided, and the surface is sprayed with alloy.

The raw materials that can be processed are PP, PE, PS, ABS, etc.;

J-type three-roll multi-machine co-extrusion sheet production line:

The unit is mainly composed of a host, a screen changer, a mold, a three-layer distributor, a tablet press, a conveyor table, a tractor, a cutting machine or a coiler, etc.;

The reduction box body is made of steel castings. The gears are made of alloy steel and have been ground teeth. All lubrication points in the box body are forced to lubricate. The lubricating oil is equipped with a cooling water system.

The screw material is made of 38CrMOA1A nitrided steel, which has been nitrided, and the surface is sprayed with alloy.

The material of the barrel is 38CrMOA1A nitrided steel, which has been nitrided, and the surface is sprayed with alloy.

The raw materials that can be processed are PET, PP, PE, PS, etc.

Hierarchical structure: AB, ABA, ABBA, etc.

Mainly applicable to stationery (such as folders), blister products (such as blister cups, blister boxes, etc.), advertising (such as billboards, etc.)

PP/PS/EVOH Sheet Extrusion Line Main technical parameter

PP/PS/EVOH Sheet Extrusion Line Application

PP Barrier (EVA, EVOH) Sheet Co-Extrusion Line

The multi-layer sheet is used for creating high barrier packaging containers commonly used in Aseptic, Hot Fill, and Retort packaging applications. With the capability to extrude up to 7-layers, it can create both roll stock and containers with very strong oxygen and moisture vapor transmission protection for product sensitive and long-term shelf life applications.

PP/EVA/EVOH multi-layer sheet co-extrusion line
To meet the market’s high request for products, Suzhou JWELL developed advanced technology of five layers symmetrical distribution and seven layers asymmetrical distribution, which makes the produced sheets having better barrier performance,
excellent anti-oxygen, and anti-humidity. Mainly used for Jelly packing, meat packing, snack food packing and etc, medicine and cosmetic packing.

PP/PS package sheet 、stationery decoration sheet extrusion lines
PP/PS sheet is widely used for food, electrical component package；differehnt kinds of sand, transparent, inclined grain decoration sheet. We are able to supply multilayers sheet extrusion machines as the customer’s requirements, the output range is from 100-1200kg/h for option.

Aplicație și fotografie a mașinii

PP/PS/EVOH Sheet Extrusion Line Technical Specification

Model: JWS120-1000  1 layer Extrusion Sheet Line

General：

1.Material adecvat: PP/PS  pellet

2.Utility source：

Electric Power Supply:(All Cabinets including main cabinet and control cabinets and all internal cables will be supplied by the seller, buyer’s responsibility is for external cables and cable frame to main panel/input power position of sheet extrusion machine)

Mains input              3×380V (Volt)

Fluctuation max          ≦+/-15%

Frequency               50HZ

Fluctuation max           +/-1.5HZ

Cooling water supply: used on machinery in closed or open-loop circuits must have the general requirement: clean filtered and free of sediments.

Supply temperature        30℃

Supply pressure           4-6bar

Pressure variation         +/-0.5bar

Return pressure average   1.5bar

Consumption capacity      20-25m³/h

Compressed air supply: clean, free of oil, dust, and water.

Supply pressure at the point of use  ≧7bar

Pressure variation             +/-1%

Consumption capacity          0.9 m³/h

3.Technical Data:

Extruder (JWS120/33)：

Max output：              300-400KG/H

Product width              1000mm

Final sheet thickness       0.2-1.2mm

Effect width of die          1150mm

Effective width of roller     1200mm

Roller diameter         Φ400/500/400mm

Equipment list：

1. JWS120/33 feeding system             1set
2. JWS120/33single screw extruder             1set
3. Hydraulic screen changer             1set
4. Melting Pump             1set
5. T-die(Jwell brand)             1set
6. Three-roller calender             1set
7. Roller temperature controller             1set
8. Cooling bracket             1set
9. Side trimming unit             1set
10. Haul off unit             1set
11. Double position Winder             1set
12. Electric control system             1set
13. Spare parts list                    1set

Specification:

1.JWS120/33feeding system  

500kg vertical stirrer              1 unit

600kg/h vacuum loader           2 units

1000kg/h hot air dryer             1 unit

150kg hopper                    1 unit

vertical stirrer2.JWS120/33Uzura anormală a șurubului și a cilindrului va apărea când șurubul este blocat de noduri de inel și obiecte străine. Un nod de inel înseamnă că materialul condensat blochează șurubul. Dacă extruderul de șurub nu are un dispozitiv adecvat de protecție, forța puternică de conducere poate săture. Dacă șurubul este blocat, va produce o rezistență colosală, cauzând daune grave la suprafața șurubului și zgârieturilor severe pe cilindru.

screw and barrel：Domestic famous brand JINHAILUO®, founded in the year 1978.

Material：        38CrMoAlA

Nitrided layer thickness：0.5-0.7mm

screw hardness： HV>=740

barrel hardness： HV>=940

L/D：            33:1

Screw diameter： 120mm

Heating zones：  7 zones

Total power：     About 50KW

Heating method： Ceramic heater

Cooling method:   Air cooling

Drive Motor：     Siemens Beide AC motor

Inverter：         ABB inverter

Drive Power：     132KW

Gearbox origin:  High quality, made in China, with cooling.

Gears type：    Helical gears

Heat treatment： Carburized and grind

Connection method of motor and gearbox：Direct power-transmission via the elastic clutch.

3.Hydraulic screen changer

Using plate type double-position structure, automatically change nets

Using a high-quality alloy changer, stainless steel net changer, the heating element is overflow.

Between the connection of changer and barrel are equipped with the pressure sensor.

Use one hydraulic valves, power: 4kg, both oil pump and electric are chosen high brand.

4.Melting Pump

Jwell product

Motor: local Gearbox and motor and a universal shaft connecting, motor power: 7.5KW.Danfoss inventor.

Max pressure: 25Mpa, heating by stainless steel heating robs. Before the pump is the Italian Gefron pressure sensor, can adjust the screw rmp with close loop control, keep output smoothly.

5.T-die

High-quality alloy 5CrNiMo forging die bodies materials, Clothes hanger channel, Chromium plating cavity surface polishing, processing, Ra0.02um，0.03-0.05mm HRC60-65.

Die using stainless steel heating robs, fully

integrated wiring, socket. 100mm deck is equipped

width of the die：    L=1150mm

product width：     L=1000mm

product thickness：  δ=0.2-1.2mm

6.Three -roller calinder

Roller diameter：Φ400/Φ500/Φ400mm

Roller Length：  L=1200mm

Surface roughness：Ra<=0.025um

Surface hardness：HRC55-60

Chromium coated layer thickness：0.1mm

Roller roundness and straightness：<0.01mm

Transmission type：Separate driving for 3 rollers.

Transmission：local reducer and Innovance Servo motor

Separate driving power：2.9kw*3

Gap adjustment between rollers：Open and close by mechanical, manual adjust both sides, roller distance show by a dial indicator.

Bearings for three rollers：Japan NSK

Calendar type：L type

Rotational joint：High quality, used for high temperature

Equip with a protection device, when the operator touches the button, three rollers will stop.

7.Roller temperature controller

Cooling medium：water

Temperature range：35-100℃

Temperature control precision：<=+/-1℃

Heating unit：electric heater

Water pump：Stainless steel multistage Pumps.

Water power：3×4Kw

Electromagnetic valve：pneumatic valve with angle.

Be with alarm function for pressure, temperature, and water shortage, etc.

8.Cooling supporting frame, side trimming unit

Length：6m

Cooling supporting frame：aluminum rollers, oxidized, polished.

Specification：Ф70x1200mm

9.Side trimming unit

Type: blade cutting

Edge trim cutter：2 pieces of knives

10.Haul off unit

Rubber roller material：Steel+Nitride rubber

Roller material: 45# steel with plating treatment

Roller Number：1 Pair

Specification：Ф250mm×1200mm

Power：3kw

Transmission：local reducer and Inovance Servo motor

It can be controlled synchronously with the three rollers or separately.

Trimming winding system  1set

With tension control

11. Doubleposition Winder

Type: adopt servo motor type winder

Auto meter counter: Korea brand

Air shaft: 3 inches

Max. winder diameter: 600mm

12. Electricity control

HMI                   SIEMENS

PLC:                  SIEMENS

Button, switch, indicator: Schneider or Chint brand

Air switch:             Schneider brand

Relay ：      IDEC/ABB/Schneider brand

Contactor：         Schneider brand

Spare part list

1. Screw Knock-down tool       1set
2. Mould knock-down tool       1set
3. 3M Thermal couples       5 pairs
4. 5M Thermal couples       5 pairs
5. 120 extruder heating band       1pc
6. 120 extruder cooling fan       1pc
7. Brass ruler       2pcs
8. Heating band for roller       3pcs
9. Mould heating band       4pcs
10. Heating band for screen changer       4pcs
11. edge cutting knives       10pcs
12. Contacts       2pcs
13. Air switches       2pcs
14. Non-force alu. Roller       1pc
15. hex wrench       1set
16. metal hose       3pcs

After-sale service

1. The guarantee period is 1 year and service is available lifelong.
2. Our expert will answer any inquiry within 24-48 hours and it will be solved as soon as possible.
3. The customer can send the engineer to our JWELL with training.
4. The Seller supplies the complete technical support documents and the relative drawings of the electric components written in Chinese and English.
5. 5. List of the spare parts (Please see the list of spare parts)

Video

PP/PS/EVOH Sheet Extrusion Line running in Turkey customer factory