What is Plastic Extrusion and How to Choose the Right Manufacturer?

What is Plastic Extrusion and How to Choose the Right Manufacturer

When choosing a plastic extrusion manufacturing partner, take the opportunity and time to get to know them on a professional and personal level.

Whether you are looking for the best plastic extrusion manufacturer to produce precise profiles for your firm or a company to invest in, the information provided here will help to achieve your objectives. In any case, you must select businesses that have years of expertise and a broad list of skills to help make your decisions.

It is important to remember that all plastic profile extrusion businesses are not created equal. The manufacturer you choose to do business with or wish to invest in must have a reliable record of delivering high-quality and reasonably priced plastic extruded profile products. That entails getting raw materials from a reputable source, using cutting-edge equipment, and assembling a team of exceptionally talented individuals to do the job.

When it comes to standard profiles, you may want to look into one of the best plastic extrusions providers like Keller Plastics. On the other hand, if you need a customized part or component or want to invest in a business that offers customized solutions, you should connect with a well-established manufacturer. In both cases, a company’s reputation speaks volumes about the kind of service you may anticipate.

First, let us know what extrusion and plastic extrusion really is!

1. What is Extrusion?

Extrusion is a technique that involves forcing material through an instrument with a particular shape called a die, resulting in the production of continuous objects with a predetermined cross-sectional profile.

2. What is Plastic Extrusion?

Plastics extrusion is a high-volume manufacturing method. A polymer material, which has been loaded with the required ingredients, is melted and extruded in a constant flow of heat and pressure.

In the case of a polymer, the raw material (granulates) is gravity fed in the hopper. It lands on a spinning rotor after passing through the feed throat. An electric motor is used for the spinning of the screw. The design of the Screw varies according to the design of the material and end product. Plastic is pushed forward through a heated barrel due to the movement of the screw shaft. 

As the plastic is carried through the barrel, the channels or thread of the screw reduces, causing the plastic to become more compressed as it proceeds. The barrel is heated by three or more separate Proportional Integral Derivative (PID) controllers, which create zones of gradually rising temperature as they function. Typically, the melting temperature of the plastic is higher than the controller’s set temperature. 

It is created by a mixture of shear friction and compressive force, which results in the formation of this extra heat (shear heat). After reaching the end of the screw, the plastic melt is thoroughly mixed and forced through a screen pack reinforced by a breaker plate, which filters impurities and eliminates the rotational memory of the material. 

After that, the filtered melt is forced through the die, and the final profile and form of the products are determined by the die used. Following its release from the extruder, the product is collected and cooled. Also, the cooling technique is determined by the extrudate’s profile and shape.

Now that we know about plastic extrusion, let us know what qualities you need to look for the best manufacturing partner.

3. Selecting the Best Manufacturer for Plastic Extrusion

Regardless of your ultimate goal, you should search for these qualities in a potential candidate.

  • Process Type: If you are looking for Plastic Extrusion profiles, search for companies that specialize in this particular technique. As there are many production methods, you want to invest or hire a manufacturer with an extensive understanding of, and expertise in the extrusion process.
  • Materials: The manufacturers of the finest plastic profile always use the best materials available in the market. As the vital component of every plastic profile, a manufacturer needs to utilize only the highest-quality raw materials available. You may be interested in a plastic extruded profile or in a company that extrudes plastic products right now. However, if you need extruded materials and accessories made from aluminum, rubber, or other metals in the future, you should select a company with knowledge and experience in various materials. This will help you to find an exceptional manufacturer. For plastic extruded profiles, it is a good idea to deal with companies that specialize in PVC, Rigid ABS, CPVC, Utility ABS, High-Density Polyethylene (HDPE), Low-Density Polyethylene (LDPE), High-Impact Polystyrene (HIPS), Polypropylene-Copolymer, PVDF, and other high-impact polymers. In addition, potential buyers can also look for a company that offers profiles composed of various acrylics, polycarbonates, and PETGs. As a result, you will be able to utilize fully finished goods for a wider variety of applications both now and in the future.
  • Capabilities: The skills of a plastic extrusion company, such as design, tooling, production, and fabrication, are all essential considerations to make.
  • Finishes: If you want beautiful and functional profiles, search for businesses that provide various distinctive finishes such as textured, matte, and glossy.
  • Tools: Compared to injection molding, the cost of tooling for customized plastic extrusion components and parts is cheaper. Therefore, cutting-edge tooling skills are essential when selecting a business partner with the possibility for extruded goods or investment opportunities.
  • Production Methods: It is worth noting the differences in the production methods used by different companies. For example, look for competent manufacturing complicated profiles using routers, printers, punches, deburring machines, drills, and other similar tools and equipment.

4. Maintaining Customer Satisfaction

As you can see, to discover the best company to manufacture plastic extruded goods or to invest in, a great deal of research must be done. However, there are quite a few companies that provide everything stated above and other services. Also, look for a company that takes great pleasure in providing every client with excellent plastic extruded profiles.


Now that you know what plastic extrusion is, and what to look for when selecting a manufacturer, ensure that they meet all the required specifications furnished above. And then you are good to go. Best of luck!

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