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Used HDPE Pipe Extruder Machine

Why Choose Us

Qingdao Confortune Machinery Co., Ltd. is a professional second-hand profile supplier with 20 years of industry experience. The company has introduced from Europe a number of multi-station processing centers and CNC lathes, CNC milling machines and a large number of advanced high-precision processing equipment. We specialize in producing Second Hand Extruder Machine, Second Hand PVC Extruder Machine, Second Hand Twin Screw Extruder, Used 45mm Single Screw Extruder, Second Hand Plastic Extrusion Machine, Used Extruder Machine, and other Second Hand Extruder.

Wide Product Range

We mainly sell all kinds of plastic different profile production line, all kinds of auxiliary plastic plate, sheet production line, plastic recycling (crushing, washing, granulation) line, centralized feeding system, such as plastic extrusion processing machinery and other products.

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Our product are exported to Egypt, Pakistan, Poland, India, Turkey, Brazil, Peru, Mexico, Romania and other more than 20 countries and regions. Trusted and praised by customers.

 

 

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With rich experience and one-to-one service, we can help you choose products and answer technical questions.

 

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We cooperate with professional sea shipping, air and logistics companies to provide you with the best transportation solution.

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What is Used HDPE Pipe Extruder Machine

 

 

The HDPE pipe extruder machine is engineered for crafting pipes with precision, adhering to the required specifications. On the other hand, the HDPE extrusion machine caters to the production of films and sheets, serving industries like food packaging. For research and development purposes, smaller, versatile extruders are utilized in laboratory settings. These machines generally fall into single or double screw configurations, with the latter being recognized for its enhanced efficiency and output. If you want to know the specifications and prices of Used HDPE Pipe Extruder Machine, please contact us!

Advantages of Used HDPE Pipe Extruder Machine

 

Good Self-Cleaning
There is a speed difference in the meshing between the twin screws. Under mutual friction, the occurrence of material stagnation can be reduced, and the self-cleaning property of the same-rotating twin screws is stronger.


Convenient to Observe
The twin-screw extruder machine is easy to open, so that the degree of wear of the threaded elements, the inner liner of the barrel and other components can be observed at any time, so that timely and effective replacement can be performed to avoid product waste caused by component damage.


Reduce Production Costs
The openable processing area makes the doube screw extruder have greater advantages in product color change and material change. And the mixing process can be analyzed by observing the melt profile on the entire screw. Ordinary twin-screw extruders need to use a large amount of cleaning material to clean the machine, but in some split twin-screw extruders, the barrel can be quickly opened for manual cleaning, which reduces the use of cleaning materials.


Improve Labor Efficiency
When performing mechanical maintenance, the heating and cooling system of the ordinary twin-screw extruder usually needs to be removed first. In the twitch screw and split twin-screw extruder, it is only lifted by removing the necessary bolts and turning the turbine box handle device. The upper half of the barrel can be opened to repair. It not only saves time and reduces the labor intensity of maintenance workers, but also reduces production interruptions caused by equipment wear.


High Speed
By observing the development trend of twin-screw extruders, we can see that this field is currently developing in the direction of high torque, high speed, and low energy consumption. For example, the increase in productivity brought about by high speed is especially reflected in the split twin-screw extruder, making it more suitable for the production and processing of high-viscosity, heat-sensitive materials.


High Yield and High Quality
Compared with the single-screw extruders, the twin-screw extruder, especially the intermeshing twin-screw extruder, performs better in the solid and melt conveying of the material, and due to the joint operation of the twin screw, the mixing of the material is more sufficient. Therefore, it has the advantages of high output, high quality and high efficiency.

 
 
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Packaging
In the packaging industry, plastic extrusion plays an essential role. It's used in the creation of various packaging materials, including heat-shrinkable film, food-grade plastic wrap, and moisture-resistant plastic bags. These materials provide the necessary protection and extend the shelf life of numerous products.


Pipes and Tubing
The process is widely used in the production of plastic pipes and tubing. These pipes and tubes come in different sizes and are used in various applications, from small medical tubes to large diameter pipes used in irrigation and sewage systems.


Window Profiles
Extrusion is an important process in the production of window profiles. These extruded profiles are durable, easy to install, and can withstand various weather conditions, making them an excellent choice for construction and home improvement projects.


Wire and Cable Coating
Plastic extrusion is also extensively used for wire and cable coating. The extruded plastic provides electrical insulation and protection against environmental factors, enhancing the longevity and performance of wires and cables.

 

Seals and Gaskets
Seals and gaskets produced through the extrusion process are used in many industries, including automotive and construction. These seals are resistant to high temperatures and various chemicals, ensuring the secure functioning of different systems.


Filaments for 3D Printing
With the rise of 3D printing technology, plastic extrusion has found a new application. Filaments used in 3D printers are typically made through the plastic extrusion process.


Sheet and Film Production
Plastic sheets and films used in many industries, including agriculture, construction, and electronics, are typically made using plastic extrusion. These products can be customized to meet specific thickness and transparency requirements.


Synthetic Fibers
The textile industry utilizes plastic extrusion in the production of synthetic fibers. These fibers are then used in the creation of various fabrics and textiles.

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What is the Step-by-Step Process of Used HDPE Pipe Extruder Machine?
 

Material Preparation
Raw plastic, usually in the form of pellets or granules, is prepared for the extrusion process. You choose a material based on what properties you expect in the final product. Some plastics emphasize strength, flexibility, color, or other properties. Raw plastic material is typically stored in a hopper. It is introduced into the extruder through the feeding opening at the rear end of the barrel. As the plastic pellets descend into the barrel and contact the screw, they also begin to melt.

 

Melting and Mixing
The plastic material is introduced into an extruder, a machine comprising a heated barrel and a rotating screw. The screw within its barrel rotates in a controlled manner but can operate at speeds as high as 120 rpm. As the screw rotates, it advances the plastic beads within the barrel, subjecting them to heat generated by the barrel itself. This heat, combined with the friction induced by the screw's movement, causes the plastic material to melt. Most extrudable plastics melt at around 200 to 275 °C.
Upon leaving the screw, the molten plastic passes through a screen pack designed to eliminate contaminants. To withstand pressures that can surpass 34 MPa, a breaker plate reinforces the screens.

 

Extrusion Process
Following the thorough mixing and uniform melting facilitated by the extruder, the molten plastic is pushed through a specially designed die or mold located at the extruder's end. This will give the plastic its final dimensions.

 

Cooling and Sizing
As the plastic material exits the die, it enters a cooling zone. Air- or water-cooling systems often assist during this stage. This removal of heat solidifies the plastic into its final shape. Additionally, sizing tools or equipment may be used to ensure it meets the required dimensions.

 

Hauling and Cutting
The extruded plastic material is pulled or "hauled" through the process using rollers or other mechanisms. This keeps the extrusion moving at the proper speed and tension. After hauling, the continuous extruded profile is cut into specific lengths using cutting tools or saws.

 

Additional Processing
Some extruded items need additional processing. This could include: surface treatments, printing, markings, or attaching other components to the extruded profile.

 

Inspection and Quality Control
The extruded plastic profiles are inspected for defects, dimensional accuracy, and other quality criteria. Any profiles that do not meet the required standards may be rejected or sent for further processing.

Materials used for Used Plastic Extruder Machine

 

 

Polyethylene (PE)
This is one of the most commonly used plastics in extrusion due to its excellent toughness and low cost. There are various types of polyethylene, including low-density PE (LDPE), high-density PE (HDPE), and linear low-density PE (LLDPE). Polyethylene is often used for extruding film, bags, and containers. You can find more about our polyethylene capabilities here.


Polypropylene (PP)
Known for its high melting point and resistance to chemicals, PP is widely used in food packaging, automotive parts, and textiles. More about our polypropylene machining services can be found here.


Polyvinyl Chloride (PVC)
PVC is used extensively in construction for pipe and profile extrusions due to its durability and cost-effectiveness. Worthy Hardware provides a range of PVC machining services that you can check out here.


Polystyrene (PS)
This material is often used in the extrusion of sheets for thermoforming applications, such as food service trays and packaging materials.


Polyethylene Terephthalate (PET)
PET is most commonly known for its use in food and beverage packaging due to its excellent moisture and gas barrier properties.


Acrylonitrile Butadiene Styrene (ABS)
ABS is a strong and flexible plastic popular in industries like automotive, electronics, and toys, due to its excellent impact resistance and durability.


Polycarbonate (PC)
Greenhouses, and digital disks.


Polyethylene Terephthalate (PET)
PET is widely used in food and drink packaging due to its excellent water and moisture barrier properties.

 
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Frequently Asked Questions
 

Q: What is the functions and advantages of a plastic pipe extruder?

A: Plastic extrusion is a continuous, high-volume manufacturing process in which a thermoplastic material is homogeneously melted and then pressed out of the shaping die. The pressure in screw extrusion is generated by the screw rotating against the barrel wall. As the plastic melt passes through the die, it takes on the shape of the die hole and exits the extruder.
The tube manufacturing line is a highly sophisticated combination of machines that ensures the high precision required in the manufacturing of medical and other precision pipes. The plastic pipe extruders are chosen based on pipe size, material, and production capacity. The use of high-quality components ensures continuous operation in the most demanding and challenging environments. The pipe head could be customised to fit various designs based on the needs of the customer.
This medical silicone catheter tube extruder is primarily used in dust-free and bacteria-free workshops to produce high-precision catheter tubing. This plastic pipe extruder is primarily used to post-process medical plastic catheter ends. It is fed manually and has three stations: clamping components, mould clamp fixing components, coil heating components, and so on. The machine has a compact design, composite material welding, butt joints, pipe end rounding, sealing, and tip-forming capabilities.
Electromagnetic induction heats the mould, and the pipe is clamped and pushed into the mould with an air cylinder to form the pipe's end. The user can adjust the process by entering parameters on the touch screen. Closed-loop temperature control employs a Japanese RKC thermostat with a temperature fluctuation range of 1°C.
The touch screen displays the current heating temperature and curve. This medical catheter extrusion line is primarily used for producing normal PVC or PU catheter tubing in a dust-free and bacteria-free workshop. It has the fastest and most stable speed for controlling normal soft PVC or PU catheter tubing size tolerance and is the highest precision medical catheter extruder-making machine.
Medical device manufacturers offer customised solutions for most devices, such as plastic pipe extruders and high-frequency hot-melting machines. There are some reputable manufacturers in China engaged in providing custom solutions for medical devices. They can design the plastic pipe extruder as per the client's required size and specifications.

Q: How does hdpe pipe extruder machine work?

A: In the extrusion process, a substance is subjected to plastic deformation by the application of a force that causes it to flow through a die or orifice. If the material has the right properties, it will assume the die's cross-sectional profile, and the final extrudate will maintain that shape.
The procedure involves creating pressure that exerts a weight on a piece of metal. A procedure summary is provided below:
Preparation of Feed Metal: The feed metal used as a raw substance in the extrusion process is known as a billet or ingot. However, the feed metal must adhere to the designers' specifications. Although other forms are possible, its typical profile is circular or square. The feed metal is produced using hot rolling or continuous casting techniques.
Preparation for Extrusion: After that, the standard basic material is put into extrusion machinery, like a press, and heated to the temperature advised for the hot extrusion technique. No preheating is needed because cold extrusion works at ambient temperature.
Metal Extrusion: The substance is now compressed during the extrusion process, which forces it in the direction of the die. The die has a tiny hole in it. When this procedure is complete, the pressure is relieved, and the product moves on to the next step.
Heat Treatment and Post-Processing: The product is now given heat treatment to improve its qualities and get it ready for its intended use. Different thermal treatment techniques are needed for various metals. For instance, in the case of aluminum, the extruded part is first cooled before being stretched and cut to the necessary lengths. The pieces go through an ageing procedure to become hardened, which involves heating them to 350°F and letting them cool for four hours.

Q: What are the applications of extrusion in industry?

A: It is widely used in the production of hollow pipes and tubes. Aluminium extrusion is used in structural work in many industries. The extrusion process is used to produce frames, windows, doors, etc., in the automotive industries.

Q: What products are made by extrusion?

A: Extrusion produces items such as pipe/tubing, weatherstripping, fencing, deck railings, window frames, plastic films and sheeting, thermoplastic coatings, and wire insulation. This process starts by feeding plastic material (pellets, granules, flakes or powders) from a hopper into the barrel of the extruder.

Q: How is metal pipe extruded?

A: Metal extrusion is a forming process in which we force a metal (either hot or cold) through a die. This imparts the die shape to the extruded metal as it passes through the cavity.

Q: Which type of extruder is preferred for PVC pipe?

A: PVC pipes and tubing are used in a variety of applications, including plumbing, construction, and irrigation. PVC twin screw extruders are used to produce a wide range of PVC pipes and tubing sizes, including rigid pipes, flexible pipes, and corrugated pipes.

Q: How are tubes extruded?

A: The technique uses slightly different mould or die to extrude hollow shapes. Tubes and hollow sections are typically extruded through a die that determines the outer shape, and a mandrel, located in the aperture of the die, determines the inside shape and section thickness.

Q: Is plastic extrusion expensive?

A: The extrusion process itself is relatively efficient and cost-effective compared to other manufacturing methods such as injection molding.

Q: What is the purpose of the extrusion machine?

A: Extrusion machines force or pull unformed material into alignment guides and shaped dies to produce lengths of stock forms and cross-sectional shapes. They are used mainly in the plastics, metals, and composite-forming industries.

Q: How does the heating system in a plastic extrusion machine contribute to its efficiency?

A: The heating system, often using high-frequency ceramic electric heating, ensures efficient and uniform melting of the plastic material, contributing to the overall efficiency of the extrusion process.

Q: What is the industrial process of extrusion?

A: Extrusion, process in which metal or other material is forced through a series of dies to create desired shapes. Many ceramics are manufactured by extrusion, because the process allows efficient, continuous production.

Q: Are plastic extrusion machines customizable for different production needs?

A: Yes, plastic extrusion machines come in various models with different specifications, allowing for customization based on production requirements. Output capacity, die shapes, and material compatibility are among the customizable features.

Q: What materials can be used in a plastic extrusion machine?

A: A plastic extrusion machine can work with a variety of plastic materials, including polyethylene, polypropylene, PVC, ABS, and more, depending on the specific

Q: How do I ensure the quality of a used profile extruder machine?

A: To ensure the quality of a used profile extruder machine, you should thoroughly inspect the machine for signs of wear, damage, or defects. Check critical components such as the extruder screw, barrel, heating and cooling systems, and control panel for any issues. It's also advisable to request a demonstration or trial run to evaluate the machine's performance before making a purchase.

Q: Are there any risks associated with buying a used profile extruder machine?

A: While buying a used profile extruder machine can offer cost savings compared to purchasing a new one, there are some risks involved, such as potential hidden defects, limited warranty coverage, and the need for additional maintenance or repairs. It's important to conduct due diligence and assess the overall value proposition before committing to a purchase.

Q: What is an extruder pump?

A: Extrusion Gear Pumps, optimize the extrusion process of thermoplastics and polymers in an extruder. They generate a constant pressure (up to 200 bar and more) and ensure a constant flow of material, relieving the plastic or rubber extruder of pressure build-up.

Qingdao Confortune Machinery Co., Ltd. is one of the leading used hdpe pipe extruder machine manufacturers and suppliers in China. We warmly welcome you to wholesale cheap used hdpe pipe extruder machine in stock here from our factory. All machines are with high quality and competitive price. Contact us for quotation.

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