PP, Evoh Multi-Layer barrier sheet extrusion line

pp, evoh multi-layer barrier sheet extrusion line: Due to the increasingly stringent requirements of the market for products, the advanced five-layer symmetric and seven-layer asymmetric distribution technology has been developed, so that the products produced by this equipment have better barrier performance. At present, GWELL can integrate EVOH into 7-layer, 9-layer or 11-layer structure through multi-layer co-extrusion process.


 Pp evoh multi-layer barrier sheet extrusion line introduction


pp evoh multi-layer barrier sheet extrusion line: Due to the increasingly stringent requirements of the market for products, the advanced five-layer symmetric and seven-layer asymmetric distribution technology has been developed, so that the products produced by this equipment have better barrier performance.


At present, GWELL can integrate EVOH into 7-layer, 9-layer, or 11-layer structure through multi-layer co-extrusion process. Multilayer coextrusion is a process in which two or more plastic materials are extruded as one material. In a standard single-layer sheet extrusion process, one material is fed and extruded through a die. The co-extrusion process involves multiple extruders and multiple materials (depending on the structure), laminar flow of molten material through melt pipes for co-extrusion feed blocks, and die technology to weld the extrudates into a unitary structure.

GWELL factory workshop real shot

The structure of multi-layer co-extrusion sheet can be divided into two types, namely symmetrical structure (A/B/A) and asymmetrical structure (A/B/C). Most of them are on the 5th, 7th, 8th, and 9th floors. The structural layers of multilayer coextruded sheets consist of three types of functional layers: barrier layer, adhesive layer, and support layer.


pp evoh multi-layer barrier sheet extrusion line, this series of plastic sheet extrusion line is mainly used to produce extruded sheets of PE, EVOH, PA, EVA, PS, PP and other materials. It is equipped with a single-screw extruder that heats, shears and conveys the material to extrusion dies and other forming and cooling equipment to achieve the final shape and size. Depending on the type of material to be extruded, different screw designs with specific length-to-diameter ratios are selected, as well as suitable extrusion dies.


 Pp evoh multi-layer barrier sheet extrusion line process


  1. Extrude
  2. Molding using an extrusion die
  3. Cooling and shaping under vacuum or normal operating conditions to obtain the final shape
  4. Delivery
  5.  Cutting
  6.  Discharge


 Pp evoh multi-layer barrier sheet extrusion line part


Conical twin-screw extruder, vacuum calibrating table, conveyor belt, cutter, film laminating machine, tilting frame, etc.




  • The optimized design of pp evoh multi-layer barrier sheet extrusion line equipment is very important to the production operation. The extruded sheet production line is manufactured by the world’s new technology, which has many advantages such as uniform plasticization, low shear rate, high productivity, and long service life.
  • The sheet production line equipment has the characteristics of compact structure, superior performance, high degree of automation, and stable operation.
  • The main extrusion equipment is driven by imported AC or DC speed regulation. Adopt Japanese RKC temperature controller for temperature control. Auxiliary equipment is equipped with famous brand vacuum pump and traction motor.
  • All these parts are easy to maintain and repair.
  • The produced PP and PE boards are impact-resistant, corrosion-resistant, high heat-resistant, non-toxic, tasteless, smooth and beautiful, and the processing procedures are easy to operate. The produced boards will not produce poisonous gas during welding.
  •  The resulting 5-layer or 7-layer PE, EVOH, PV, EVA, PS or pp ps sheet extrusion line PP sheet provides good air and a moisture-proof layer for the food wrapped in it. It traps air between the layers, providing the best possible protection for the food.

China gwell pp hollow board extrusion line

Pp evoh multi-layer barrier sheet extrusion line application


  • Store fresh meat at room temperature
  • Frozen stored meat
  • Other fresh food
  • Snacks
  • Some industrial products
  • Medical device packaging


What is EVOH


EVOH stands for ethylene vinyl alcohol copolymer and is a flexible, crystal clear, glossy thermoplastic copolymer. This material has excellent flex crack resistance and high resistance to hydrocarbons, oils, and organic solvents. EVOH is known for having the best barrier properties against gases such as oxygen, nitrogen, and carbon dioxide, and EVOH is considered to have excellent barrier properties compared to other common films. However, EVOH loses its good gas barrier properties when exposed to moisture. Therefore, EVOH is often used in multi-layer co-extruded film structures together with materials such as HDPE, PP, and PET, all of which have excellent moisture-proof properties.


Why Choose EVOH Plastic Sheet


The remarkable feature of EVOH high barrier plastic sheet is its excellent barrier performance to gas. In addition, it also has excellent transparency, gloss, mechanical strength, stretchability, abrasion resistance, cold resistance and surface strength. In the field of packaging, EVOH is made into a composite sheet intermediate barrier layer for all rigid and flexible packaging.


Application of EVOH plastic sheet


The EVOH high barrier film under pp evoh multi-layer barrier sheet extrusion line is mainly used for modified atmosphere preservation. Such as fruit packaging, cooked food, fresh meat, dairy products, condiments, etc. Also used for packaging of non-food items such as chemicals and electronic components.


It is widely used in the packaging of jelly, high-grade meat products, instant rice, medicine, cosmetics, and other industries.


Product Name High barrier packaging films
Production Technology Water quenched technology
Color Transparent or Printing
Quality Standard Food Grade; Medical Grade; SGS; FDA
Size Thickness: 55um-300um

Width: 100mm-1200mm

Features 1) Excellent barrier properties of Oxygen and Moisture.
2) Leakage Resistant and High Moisture Proof.
3) High puncture and tear resistance.4) Easy open top film can be produced
Application It can adopt vacuum automatic packaging thermoforming machine, used for meat, sausage, bacon, beef, cheese, egg packaging
Others Packaging: Roll in carton or Customer requirements.


China pp evoh-multi-layer barrier sheet extrusion line


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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