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Polymer Extrusion

A reliable source for Polymer Extrusion information and leading Polymer Extrusion Companies & Manufacturers.

Polymer extrusion is a process whereby a molten polymer is used to create components of a fixed cross-sectional area by forcing it through a die. The components include tubes and rods.Read More…

Polymer Extrusion Polymer extrusion is the process of shaping unprocessed polymers into usable products. "Polymer" is the technical term for some of the building blocks of many organic compounds; a few examples of biopolymers are proteins and nucleic acids.
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Leading Manufacturers

Plainwell, MI  |  269-783-4068

Preferred Plastics is an ISO 9001:2000-certified custom plastic extruder, specializing in rigid, flexible & co-extruded products, including extruded tubing.

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Preferred Plastics, Inc. $$$

Cadott, WI  |  800-369-9410

Since 1978, SFR has been a leader in custom plastic profile extrusions, specializing in vinyl polymers for a variety of industries ranging from commercial furniture and store fixtures to industrial applications.

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SFR Industries Inc. $$$

Milwaukee, WI  |  414-332-8133

We have a long history of providing plastic extrusions. We will proudly serve you and we are committed to quality customer service. Our plastic extrusions are used in industries ranging from automotive to medical.

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Absolute Custom Extrusions, Inc. $$$

Cleveland, OH  |  440-238-3009

A plastic extrusion manufacturer of extruded plastic products, GSH Industries manufactures custom plastic extrusion profiles. We have continually expanded & attained our position as a preferred supplier of quality products & engineering ingenuity.

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GSH Industries, Inc. $$$

Johns Creek, GA  |  770-777-8540

As our name suggests, we are a leading custom extruder of plastic shrink tubing, flexible and rigid tubing, and profiles in standard or custom colors in a multitude of material options. We use state-of-the-art machinery for our extrusions and perform secondary operations on site, such as drilling, slotting, notching, etc. Pexco is ISO 9001 certified.

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Pexco $$$

Sheboygan, WI  |  800-776-7163

At Northland Plastics, we are the experts in unique custom plastic extrusions. We specialize in single and dual durometer profile extrusions, vacuum calibration, automated inline fabrication, custom fabrication, and more. Custom colors and various additives are also available. As an ISO 9001:2015 company, we value product quality, timely delivery, competitive pricing, and excellent customer service above all else. Contact Northland Plastics today for all your extrusion needs!

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Northland Plastics, Inc. $$$

Middlesex, NJ  |  800-229-3338

Petro specializes in plastic extrusions, offering our customers many capabilities, such as customized shapes & extruded tubing, along with tape application, coiling & angle cutting.

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Petro Extrusion Technologies, Inc. $$$

St. Charles, IL  |  630-584-8282

We develop the most affordable and long lasting plastic extrusions. These extruded materials come in a variety of options and are Polytec Q-1 certified. We offer fast delivery and our customer service team is willing to design a perfect solution for your industry.

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Polytec Plastics, Inc. $$$
placeholder image Preferred Plastics, Inc. SFR Industries Inc. Absolute Custom Extrusions, Inc. GSH Industries, Inc. Pexco Northland Plastics, Inc. Petro Extrusion Technologies, Inc. Polytec Plastics, Inc.

The Extrusion Process

This is a process used to manufacture long products of a constant cross-section. This is achieved by forcing softened polymer in the form of pellets through the opening of a die. Next, the pellets are fed into an extruder through a hopper. A feeding screw will then be used to convey the material forward. The material is then forced through a die, where it is converted to a continuous polymer product. There are heating elements that are placed over the barrel for the softening and melting of the polymer. Thermocouples have been used to control the temperature of the material.

twin screw extruder

The product will then go out of the die and cooled by blown air or in a water bath. Polymer extrusion is a continuous process that lasts as long as the raw pellets are supplied. The extrusion process is most commonly used for thermoplastics, but thermosets and elastomers may also be extruded. In this scenario, cross-linking occurs when the material is heated and melted inside the extruder. The thermoplastic extruded products may be thermoformed further.

Types of Polymer Extrusions

The different types of polymer extrusions include:

Tubing Extrusion

This type of extrusion is utilized in the extrusion of pipes and tubes. In this process, air is applied with positive internal pressure. After exiting the die, the tubes or pipes are pulled into a cooling tank that cools them with water.

plastic extrusions

Blown Film Extrusion

This type of extrusion is utilized in the production of plastic film tubes. This is achieved through continuous sheeting. In this process, the film tube melt is cooled before it leaves the die. This produces a semi-solid tube that is blown into so that it expands to the size and thickness desired. Blown film extrusion is utilized in the manufacture of products like shopping bags.

extrusion blow molding

Sheet Film Extrusion

This process is utilized to extrude plastic sheets or films with a thickness that is too much for blowing. The sheets are pulled and cooled after exiting the die through a series of cooling rolls, which are also responsible for regulating sheet thickness.

Over Jacket Extrusion

This type of extrusion is utilized in wire coating. In this process, a wire is pulled through the die’s center. If there is a requirement for adhesion between the coating and the wire, pressure tooling is employed. In this extrusion method, the wire is covered by molten plastic while in the die. It is then pressurized when it leaves the die. If there is no requirement of adhesion, jacket tooling is employed. The melt covers the wire as it exits the die in this method.

Applications of Polymer Extrusions

Polymer Extrusion is used to produce plastic products like:

  • Medical fluid and IV tubing
  • Vinyl siding
  • Fencing, deck railings
  • Drainage and irrigation pipe
  • Home décor, window frames
  • Furniture trims
extruded rubber

Benefits of Polymer Extrusion

  • Polymer extrusion produces a high output of continuous production. These products can then be reeled for applications that require a continuous product like pipe extrusion, tubing extrusion, or film.
  • The co-extrusion process can be used to form one product out of two different materials. Co-extrusion reduces costs by using recycled and reground scrap inside virgin materials for fences, handrails, and other applications.
  • Polymer extrusion produces products with better flexibility.
  • After extrusion, alterations are possible with polymer extrusion. When plastics are removed from the extruder, they stay hot, allowing for post-extrusion manipulations. This means that the shapes can be changed to the required shape of the product.
  • The process of polymer extrusion is incredibly versatile.
  • Polymer extrusion can produce complex shapes with varying textures, colors, thicknesses, etc.

Polymer Extrusion Informational Video

 

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