What's the production process of plastic extrusion line?

Raw material mixing: The automatic feeding and mixing system can accurately complete the feeding, weighing, and mixing processes, which replaces the traditional manual feeding and improves accuracy. After mixing, the materials can be added to the hopper of the extruder after they are cooled to a certain temperature. Extrusion of plastic pipe products: The screw rotates in the barrel, and the mixture is plasticized and pushed to the machine head. After compacting, melting, mixing and other procedures, the purpose of exhausting dehydration is realized, and then it is extruded through the die forming. Vacuum shaping: the vacuum shaping water tank is used for pipe shaping and cooling. Traction: Continuously and automatically haul out the shaped and cooled pipe. Cutting: According to the length set in advance, it can realize automatic fixed-length cutting. 6. Rewinding or stacker: equipped with automatic unloading device, greatly reducing manual labor.

What is an extrusion line?

A sheet extrusion line consists of an Extruder (single or twin screw), equipped with a Screen Changer and a Gear Pump, followed by a Static Mixer (sometimes feeding a Coextrusion Feedblock that is preceded by one or more additional extruders sets as described above), feeding a flat sheet die.

What is plastic extrusion?

Plastic extrusion is a continuous process in which solid plastic pellets or powder are melted into an homogeneous mass through a combination of applied heat and friction heat generated by the extrusion screw or screws transporting the material through a barrel. The mass or polymer melt is pushed through an extrusion die to produce a shape, tube or sheet. The extrudate is then cooled by various means into its final form and cut to length using various cut-off devices.

What is extrusion tooling?

Extrusion tooling costs of a die, downstream calibration, and fabrication equipment. Molten plastic enters the die at an enlarged opening that gradually narrows (much like a funnel) as the plastic nears the exit point of the die. Next, the plastic passes through a series of sizes that hold the plastic in shape until it has cooled. The shape is cut to length with a cutter or saw. Fabrication equipment, including punches or embossing rolls, can be used during this process to finish the product.

What Is Your Standard Stock Extrusion Length?

Most stock extrusions are available in 96' lengths but we will also cut to size.

Are you trading company?

No. We are a factory, we are the source.

Plastic Extruder Machine For Sale, China Plastic Extrusion Machine Manufacturer

Plastic Extruder Machine Manufacturer

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Types of Plastic Extruder Machine For Sale

SJ Series High Efficiency Single Screw Extruders

High production capacity and high-velocity extrusion on high-quality bas2. Low-temperature plasticization design guarantees two stages styles unitary design.

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SJSZ Conical Twin Screw Extruder

Gentle moulding design guarantees the quality of the matter. Very dependable valid design theory guaranteed the dependable operation of extruding.

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Principle of Plastic Extruder Machine

The principle of the plastic extruder machine is to melt and plasticize solid plastic under the conditions of heating and screw rotation of the extruder, and form a continuous plastic product with the same cross-section and shape as the mold through a mold with a specific shape. Manufacturing materials of the China extruder machine mainly include carbon structural steel, alloy tools, etc. Some extrusion dies are also embedded with wear-resistant materials, such as diamond, which need to be wear-resistant.

The extrusion process is usually only suitable for the production of thermoplastic products, which are structurally different from injection molds and compression molds.

How does A Plastic Extruder Work?

The operation of the extruder machine may be complicated, but the whole process is relatively simple. The core of the extruder machine is a screw, sometimes called an auger. The screw is turned by the gearbox, and the gearbox is powered by an electric motor. It is enclosed in a closed heating barrel, which helps provide friction.

The thermoplastic pellets are transported to the extruder machine through the hopper. The hopper is located at the rear of the barrel/screw assembly, from where the pills fall into the barrel. As the screw rotates, it slowly drags the thermoplastic pellets forward. The frictional heat generated when the screw rotates inside the barrel and external heating can cause the plastic to melt as it moves forward in the barrel. The molten plastic is pushed into a section used to meter the plastic for use in the next stage of the process. It can also be pumped under pressure at this stage of the process.