PP PS Sheet Extrusion Line

GWELL, as China Plastic Extruder Supplier, PP PS Sheet Extrusion Line is commonly used as single extruder single-layer sheet extrusion line and double-extruder co-extrusion three-layer sheet extrusion line. There is also a multi-extruder co-extrusion multi-layer extrusion line that can process up to 7-9 layers of composite sheets, such as a high-barrier EVOH multi-layer co-extrusion line.


In the current market, the PP PS sheet extrusion line is mainly based on single-screw models, and the equipment cost is much lower than that of twin-screw models. China Plastic Extruder manufacturer- GWELL, a single-screw model of PP PS Sheet Extrusion Line, stable feeding under various formulas, and good plasticizing properties of raw materials, which not only ensures the toughness of the sheet but also avoids the later thermoforming of the sheet. Cracked, uneven color.


China PP PS sheet extrusion line twin-screw model, although the cost is higher, other aspects are excellent compared to single-screw. With the twin screw, the design flexibility of its thread structure is more flexible, which ensures the feeding of the extruder, and at the same time makes the formula material have better dispersion in the barrel, and the sheet will be more uniform.


PP/PS sheet extrusion line is common for single-extruder single-layer sheet extrusion line and double-extruder co-extrusion three-layer sheet extrusion line. There is also a multi-extruder co-extrusion multi-layer extrusion line, which can process 7-9 layers of the composite sheet at most, such as a high-barrier EVOH multi-layer co-extrusion extrusion line. This type of extrusion line can process PP, PS, PE, and other polyolefin materials.

pp ps extrusion line 3

Introduction of PP PS sheet extrusion line

  • PP sheet


PP sheet is made of PP (polypropylene) resin through extrusion, calendering, trimming and other processes.


PP sheet has the characteristics of lightweight, bright and stable surface, good heat resistance, high mechanical strength, excellent chemical stability, electrical insulation and non-toxicity. After thermoforming, it can be made into drinking cups, food boxes and other daily necessities.


  • PS table


PS (polystyrene) sheet is a new type of environmentally friendly packaging material developed in recent years. With its excellent thermoforming performance, good protection performance, environmental protection performance and hygienic performance, it is widely used in blister packaging of medicine, food, toys, electronics and clothing.


main feature:


  • Low static electricity generation, suitable for packaging products with low static electricity requirements.
  • Easy to vacuum form, the product has good impact resistance.
  • It has good hygienic properties and can come into direct contact with food without harm or benefit.
  • Easy to color, can be made into different colors of materials, produced into different colors of vacuum cover.
  • Good hardness, this kind of plate is better than other plates of the same thickness. Thermoformed cups can be used as hot and cold beverage cups.
  • PP PS sheet extrusion line products meet environmental protection requirements and can be recycled. When its waste is incinerated, it will not produce harmful substances that harm the environment.


PP PS Sheet Extrusion Line Process Flows

Extruder —- Screen changer —– Melt pump —– T-die —— Calender —– Cooling bracket —– Haul-off—- Winder


Gwell PP PS sheet extrusion line

Multi-extruder co-extrusion technology is adopted to produce multi-layer co-extrusion composite PP and PS sheets, such as ABA, ABCBA, ABCDCBA, and other multi-layer structure, which is widely used in heat forming, printing, hardware packaging, electronic tray, flocking, food, clothing, tools, toys, stationery pieces, decorative pieces and so on.

  • equipped with the precise distributor, evenly layered, the adjustable proportion of each layer, digital precise control.
  • inclined horizontal structure, easy to operate and maintain.
  • roller independent power, linear speed, and extruder speed synchronous closed-loop control.
  • the whole machine adopts PLC control to realize automatic control of parameter setting, data operation, feedback, alarm, and other functions.
  • Gwell independently wrote the electronic control operating system.
  • PP PS sheet extrusion line screw adopts specially designed mixing and plasticizing function.
  •  Hanger type die head, double throttle valve design, can accurately adjust the thickness of the plate.
  • Sheet thickness is adjusted by screw and pressing roller.
  • Separating roller temperature control system to make the thickness of the plate uniform.
  • PP PS sheet extrusion line winder adopts large torque motor to adjust speed and tension.
  • Automatic measuring device can preset product length.


PP PS sheet extrusion line main components


  • Single extruder
  • Screen changer
  • Melt pump
  • Three-roll calender
  • Cooling conveyor
  • Trimming unit
  • Crimping machine
  • Take off
  • Winding machine

pp ps extrusion line 1

Type of extrusion


PP PS sheet single-screw venting or not extrusion line


There are two kinds of PP/PS single-screw extrusion line venting or not.

One of the keys that finished sheet crystal point has or not is moisture content. Extrusion line with venting+drying, venting or both not, Moisture content ranking will be venting+drying<venting<both not.

Choose which type of single-screw extrusion line, which the important point is the raw material moisture. China Gwell needs customer requirements, finished product net width、thickness、output capacity, etc and conditions, used raw material、factory condition, so that design for our customers.


PP PS sheet twin-crew venting extrusion line


Twin-screw extruder is more suitable for kinds of raw material, no matter what the form of materials. So if customers doesn’t make sure the type of the raw material or later want to change different types of the PP/PS raw material.

We will introduce the twin-screw PP/PS sheet extrusion line. And moreover, China Gwell

GWELL as China Plastic Extruder manufacturer designed the twin-screw extruder that has the advantages of lower power and high capacity. It can improve the profit for customers.


Extrusion type


Mono extruded to make a single-layer PP/PS sheet, this is a simple and normal PP/PS sheet. Gwell will provide the specification according to the used raw material.

Co-extruded to make a Three-layer pet sheet or multi-layer PP/PS sheet, like the three-layer sheet, which is composed of PP/PS+CaCo3+PP/PS. It can decrease the cost but also environmental. Multi-layer like PP PS EVOH sheet extrusion line, this kind of machine for high barrier packaging.like Jelly, cheese, medical packing, etc.


Main applications of PP PS sheet


  • PP/PS blister sheet
  • PP/PS single-layer sheet, PP/PS co-extruded two-color sheet, PP double-sided high-transparency sheet, etc. Sheet used in the blister packaging industry.
  • PP stationery sheet
  • PP transparent sheet, frosted sheet (coarse sand, fine sand), two-color sheet used in stationery packaging industry sheet.
  • PP foam sheet, PP foam sheet has unique advantages, PP foam sheet with a density of over 0.45g/m3 has good bending resilience, not easy to deformation, so it has a broad prospect in the field of folders; PP foam sheet with a density of 0.6g/m3 has good mechanical properties and has a very broad future in the field of automobile interior decoration. It can be processed into carpet support materials, shade board, sound insulation board, luggage rack, interior decoration, cover, box, etc. PP foam sheet with the density of 0.3g/m3 has good flexibility and resilience, suitable for packaging, partition board and other fields.


pp ps extrusion line 2



Whether single-screw or twin-screw PP PS sheet extrusion lines, there are designs for PP and PS production. The length-diameter ratio of the single screw has been lengthened, and the vacuum exhaust has been increased; for the twin-screw model, China Plastic Extruder manufacturer – GWELL has developed and designed a vacuum system suitable for the twin-screw main engine to ensure that the moisture of the material is fully discharged, thereby ensuring the PP PS sheet. performance.



Type of extrusion line single screw venting or not PP/PS sheet extrusion line twin screw venting PP/PS sheet extrusion line
Extrusion type Mono extruded or co-extruded
Finished Product Single layer, double-layer or multi-layer PET sheet
Raw material PP/PS vergin ,flake and crushed material
Net width 600mm-1220mm and more
Thickness range 0.15mm-2mm and more
Capacity 200kg/h-1200kg/h and more
   Application Food and fruit packing,Stationery pieces,Printing, hardware packing,electronic tray,flocking,clothing,decorative pieces,high barrier packing and more
Type of extrusion line PP/PS single-extruder extrusion line PP/PS double-extruder Co-extrusion line PP/PS multi-extruder co-extrusion multi-layer sheet extrusion line
Can produce single layer sheet Can produce double-layer or three-layer sheet Can produce multi-layer sheet, which usually has 5 layers, 7 layers or 9 layers
Type of extruder Single screw extruder or parallel twin screw extruder
Width of Products 600mm-1220mm
Thickness of Products 0.15mm-3mm
Output 200kg/h-1000kg/h



  • PP/PS sheet is flexible in processing, transparent, non-toxic, environmentally friendly and easy to be recycled.
  • Vacuum Moulding: food packing, fruit packing, toy box, gift box, etc.
  • Obstructing Application: Electronic components packaging.
  • General Application: stationery pieces,hardware packing,decoration materials,etc.
  • Special Application: High barrier packaging(PP PS EVOH multi-layer).


1 副本


PP PS Sheet Extrusion Line Video


About Gwell

Plastic extrusion equipment production plant

Innovation drives enterprise progress. Relying on the group’s strong technology, equipment strength and innovation spirit, Gwell is committed to the development of high-tech products and the international market. Gwell also actively exchanges and cooperates with world-class scientific research institutions. The new technologies, new processes and new products developed by Gwell are widely used in building materials(PP hollow sheet extrusion machine, PC optic extrusion machine), home appliances(SPC floor extrusion machine), packaging(PET sheet extrusion machine, EVOH film extrusion machine), 

medical treatment(PVC rigid sheet extrusion machine), automobiles(TPU film extrusion machine, PVB film extrusion machine), new energy(EVA solar film extrusion machine), aerospace(TPU film extrusion machine), rail transit(waterproof film extrusion machine) and other fields, which are closely related to human life.

Related Product


International Commercial Terms(Incoterms): FOB, CFR, CIF, EXW.

Terms of Payment: LC, T/T

Delivery date:1-4 months

We are committed to produce sheet,film,board extrusion machine.Sheet extrusion machine includes PET sheet, PP、PS sheet, PLA biodegradeble sheet, PETG sheet extrusion machine, PVC soft sheet, PMMA、GPPS sheet extrusion line and so on.Film extrusion machine includes EVA、POE solar film, PVB film, TPU film, PETG film, ASA film and so on.Board extrusion machine includes PC solid board, PP、PE board ,etc.and other extrusion machine like floor, hollow, waterproof , foaming, non-woven fabric extrusion making machine.

Our Trading capacity is about 1,000 extrusion lines every year,and Gwell has exported to over 60 countries and regions for nearly 15 years.

It will take 1-4 months to produce,which caused by different reqiurements of customers and design for each extrusion line.

Yes,Gwell sale teams will provide specification according to customer’s requirements,meanwhile we can give the technical support to customers. Beacause we are not only sales but also technicians.If you are interested in our extrusion machine,please contact us.

Yes,Gwell is complete set of customized turn-key engineering project which include hardware& software design, technology commissioning and after-sales service.Otherwise we can provide formula support.

Cindy Liu:Email:cindy@gwell.cn  Whatsapp/phone:+86 15906228639

Lucy Lu:   Email:zl@gwell.cn      Whatsapp/phone:+86 18861956208

24 hours/7 days available

The whole extrusion line that we often adopt ocean shipping for saving cost,The nearest port of departure is China Shanghai,but if urgent cases like small spare parts,we will send to customer factory by air. Otherwise you can either use your own assigned shipping agent or our cooperative forwarder.

Are there any technical supports for extrusion machine that you need?​

Our service will be always at your disposal over the entire extrusion line life.So if you want to know about any other technical supports.Please contact us as soon as possible.

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