Plastic extrusion and plastic co-extrusion processes are used to create solid plastic shapes known as plastic rods. These plastic rods have important applications in aerospace, electronics, petrochemicals, maritime, and transportation industries. During the plastic extrusion process, the raw plastic material undergoes the melting process. It is then pushed through a die which forms desired shapes and hardens during the cooling process. Read More…
Preferred Plastics, Inc.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.$$$
SFR Industries Inc.Cadott, WI | 800-369-9410
Since 1978, SFR has been a leader in custom plastic profile extrusions, specializing in vinyl polymers for a variety of industries ranging from commercial furniture and store fixtures to industrial applications.$$$
Absolute Custom Extrusions, 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.$$$
GSH Industries, Inc.Cleveland, OH | 440-238-3009
A plastic extrusion manufacturer of extruded plastic products, GSH Industries manufactures custom plastic extrusion profiles. We have continually expanded & attained our position as a preferred supplier of quality products & engineering ingenuity.$$$
PexcoJohns 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.$$$
Northland Plastics, Inc.Sheboygan, WI | 800-776-7163
At Northland Plastics, we are the experts in unique custom plastic extrusions. We specialize in single and dual durometer profile extrusions, vacuum calibration, automated inline fabrication, custom fabrication, and more. Custom colors and various additives are also available. As an ISO 9001:2015 company, we value product quality, timely delivery, competitive pricing, and excellent customer service above all else. Contact Northland Plastics today for all your extrusion needs!$$$
Petro Extrusion Technologies, 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.$$$
Polytec Plastics, Inc.St. Charles, IL | 630-584-8282
We develop the most affordable and long lasting plastic extrusions. These extruded materials come in a variety of options and are Polytec Q-1 certified. We offer fast delivery and our customer service team is willing to design a perfect solution for your industry.$$$
Plastic rods can be used in the construction and commercial business sectors, to structurally support point of purchase displays, and in industrial equipment.
Manufacturing Plastic Rods
Plastic extrusion or plastic co-extrusion are methods used to manufacture plastic rods. The primary procedure used to manufacture plastic rods is known as plastic extrusion.
Plastic Extrusion Process
Typically, the basic compound material used in this plastic extrusion process starts as microplastic materials with a size of less than 5mm. Then, small beads, commonly referred to as resin, are gravity-fed into the barrel of the extruder from a top-mounted hopper. It is possible to blend colorants and UV inhibitors with the resin before they reach the hopper by adding them as additives in the form of pellets or liquid. From the perspective of extruder technology, the plastic extrusion process is similar to the plastic injection molding process, but it varies in that it is a continuous process.
In plastic extrusion, similar profiles of the rods are produced in continuous lengths, usually with reinforcement. Afterward, the material enters through the feed throat, a hole close to the barrel's back, and contacts the screw. The purpose of this rotating screw, which typically rotates at 120 rpm, is to propel the plastic beads into the heated barrel. Due to factors like viscous heating, the temperature needed for extrusion is rarely the same as the barrel's fixed temperature.
Three or more separate PID-controlled heating zones in this barrel work together to raise the barrel's temperature from the back progressively. The plastic enters from this back toward the front. This lowers the possibility of overheating, which could lead to the breakdown of polymers. It also lets the plastic beads melt gradually as they are forced through the barrel. The molten plastic then leaves the barrel, and a screen pack removes any containment before it reaches the die.
Plastic Co-Extrusion Process
Co-extrusion is a modified form of extrusion in which a single product is produced using a combination of two or more distinct materials. Plastic can occasionally be co-extruded with other non-plastic materials, such as metals. The task of melting the polymers used to manufacture the product is carried out by many extruders directed toward a single die.
Types of Extruders
There are many different types of extruder designs for use in extrusion processes. However, continuous and discontinuous extruders are the most common classes of extruders. The main difference between continuous extruders and discontinuous extruders is that discontinuous extruders have reciprocating parts, while continuous extruders have rotating parts. The two additional categories for continuous extruders are screw extruders and drum or disk extruders.
Due to their low cost, toughness, simple design, great performance, and reliability, screw extruders are the most popular continuous extruders. Three zones with three different geometries are present in a typical single-screw extruder. The enclosed zones are feed, metering, and compression zones. A constant pitch and variable screw depth creates these zones.
Disk extruders facilitate the extrusion process by using disks or drums. Disk extruders are also known as screwless extruders. Viscous drag transfer is used to operate most disk extruder models.
This kind of extruder operates by using a spinning drum and barrel. The polymeric material is fed into the annular space between the barrel and the drum in drum extruders.
Applications of Plastic Rods
- Raw materials for making seals
- Support material for displays
- Prestressing tendons
Advantages of Plastic Rods
- High wear resistance
- High impact strength
- High chemical resistance
- Less expensive
Disadvantages of Plastic Rods
- Not biodegradable
- Lead to pollution
- Cannot resist high temperatures
- Prone to damage
Choosing the Correct Plastic Rod Supplier
To ensure you have the most beneficial outcome when purchasing plastic rods from a plastic rod supplier, it is important to compare several companies using our directory of plastic rod suppliers. Each plastic rod supplier has a business profile page highlighting their areas of experience and capabilities, along with a contact form to directly communicate with the supplier for more information or request a quote. Review each plastic rod business website using our patented website previewer to quickly learn what each company specializes in. Then, use our simple RFQ form to contact multiple plastic rod companies with the same form.