Recent Posts

Plastic Converters Set for Growth

As a subset of the overall plastics industry, plastic converters are responsible for a wide range of products, including:

  • Garbage bags
  • Liners
  • Covers
  • Sheeting
  • Zipper bags
  • “T-shirt” grocery store bags
  • Vented fruit storage bags
  • Dry cleaning bags
  • Labels
  • Adhesive tapes
Continue reading

Plastic Distributors Foresee Growing Markets

Plastic distributors provide a wide range of plastic sheet, rods, shapes and resins to manufacturers around the world.

The market for pipes, rods and shapes was approximately $106.5 billion in 2018 and is expected to grow to around $137.1 billion in 2022, while the value of the global plastic films and sheets market is forecasted to reach $157.5 billion by 2025.

Continue reading

Thermoformers Well-Suited for a Broad Range of Applications

Thermoformers use a plastic processing technique that molds a heated sheet of plastic to manufacture products for a wide range of applications.

End markets include:

  • Food packaging
  • Automotive
  • Healthcare and medical
  • Construction
  • Consumer goods and appliances
  • Electrical and electronics
Continue reading

Plastic Compounders Foresee Growing Market

Plastic compounders accounted for a global market worth $59.1 billion in 2019, with an expected annual growth rate of 5.2% from 2020 to 2027.

It’s a market that meets the need for specialized materials for a broad array of end uses. To accommodate these applications, custom compounders alter the physical, thermal, electrical or aesthetic characteristics of plastics by incorporating a wide range of materials, including:

  • Antioxidants
  • Processing aids
  • Colorants
  • Additives to improve wear resistance
  • Blowing agents
  • Lubricants
  • Fillers
  • Reinforcements
  • Antistatic agents
  • Slip/ anti-slip agents
  • Anti-block agents
  • Flame retardants
  • Light stabilizers
  • Impact modifiers
  • Cross-linking agents
Continue reading

Rotationally Molded Products for Every Application

Rotationally molded products run the gamut from industrial components to children’s toys. Examples of products made by custom rotomolding companies include:

  • Road barriers
  • Mannequins
  • Ping pong balls
  • Medical spine boards
  • Kayaks
  • Playground equipment
  • Agricultural storage tanks
  • Car cupholders
  • Large decorative plant pots
  • Floating marine barriers
  • Fenders for heavy-duty trucks
Continue reading

Plastic Extrusion Machinery Stretches the Imagination

Plastic extruder machines are used to manufacture a wide range of consumer, industrial and agricultural products. But, no matter what the end use, the basics of the different plastic extrusion machinery remain the same.

The Extrusion Process

All plastic extrusion equipment is made up of a hopper, a barrel and a die. To break the process down, plastic resin is first fed into the hopper. Depending on the application, the resin may have previously been mixed with additives like UV inhibitors or colorants.

Continue reading

Reaction Injection Molding Companies Take Advantage of Process’s Numerous Benefits

Reaction injection molding companies produce a wide range of parts, including:

  • Corrosion-resistant fittings
  • Bumpers
  • Construction machine covers
  • Fenders

Parts manufactured using RIM molding can be easily painted. End markets range from automotive and construction to appliance, furniture, recreation and sporting goods.

Continue reading

Rotational Machinery to Meet a Wide Range of Needs

All rotational machinery operates on the same principle: powdered resin is tumbled within a heated mold using continual rotation to create a hollow product with a uniform wall thickness.

While adhering to the basic principle, each type of rotational molding machine operates on a slightly different basis:

Carousel – one of the most popular rotational machines, features up to four independent or fixed arms and six stations. While fixed arms work well when identical cycle times are needed on each arm, independent arms allow for different cycle times and wall thicknesses.

Continue reading

Rubber Product Manufacturers Run the Gamut

Mention rubber products manufacturers, and the first image that comes to mind is tires, a rubber product nearly every person in the U.S. is familiar with.

Continue reading

Vetting Checklist for Custom Injection Molders

The Polysort plastics and rubber industry directory contains an extensive list of custom plastic injection molders, providing descriptions and links to the various company websites. But short descriptions can only take you so far. What else do you need to know to select the right supplier for your project?

While cost is an important consideration, it shouldn’t be the sole driver of your decision. One basic differentiating factor among injection molders is volume. Low to moderate volume plastic molders specialize in the production of parts numbering under 10,000 units, while high volume molders are chosen for jobs running over 750,000 units.  Knowing the volume of production you need will help steer you toward the right molding company.

Continue reading

Custom Blow Molding Basics

Plastic blow molding companies create products using several different methods.  All of the processes start with a plastic preform or parison that is placed in a hollow mold. Air is then blown into the preform or parison so that it expands and fits to the mold cavity.

Continue reading

The Thick and Thin of Plastics Extrusion

Plastic extrusion companies support a global industry valued at more than $185 billion, with the North American market accounting for 21% of that volume.

The Extrusion Process

The plastics extrusion process begins with resin in a hopper being fed into a barrel. A screw within the barrel mixes, heats and pushes the resin through a die that creates the product’s desired shape. Heating bands or cooling devices can be used to regulate the temperature of the resin in the barrel.

Continue reading

Injection Molding Machinery 101

Injection molding machinery forms the foundation of an industry with a global value of $258.2 billion, approximately $7.2 billion of that attributed to the U.S. injection molding market. Injection molding is the most common method of mass-manufacturing plastics products. An amazingly wide range of products are made using injection molding machinery...
Continue reading

Get on Polysort and Get Found

Polysort: The Online Directory for the Plastics and Rubber Industry from Pilot Fish With thousands of visitors each year, Polysort is a trusted resource in the U.S. plastics and rubber industry. People come to Polysort, knowing they can find the products and services they need easily and simply. As such, the Polysort plastics and rubber industry di...
Continue reading

Welcome to Polysort!

Since our founding in 1995, at the dawn of the Internet, even before Google existed, we've been the go-to online directory for the plastics and rubber industries, with links to thousands of manufacturers and suppliers. We're now redefining our focus, with a special emphasis on the U.S. market. With the Internet being global, we thought it important...
Continue reading

By accepting you will be accessing a service provided by a third-party external to