In part one of this two-part blog series, we went over some of the approved plastics that are used within injection molding for food processing and related food and beverage needs. Because sanitation and cleanliness are so important for materials in this industry, there are strict standards on the plastics used within injection molding for various food processing parts, and working with a quality manufacturer who understands these guidelines fully is very important.

At EnviroTech Custom Injection Molders, we’re here to help. We provide numerous food processing services within injection molding, with our industrial filter plates being used in numerous operations and processes. What are some of the other plastic types that are acceptable and regulated within food processing industries, and what are the benefits of each for various settings? Here’s a primer.


Short for polycarbonate, PC is one of the plastic materials that’s used most when the food and beverage requires extremely tough, durable products. Items like reusable water bottles, water-cooler bottles and others are generally made from polycarbonate, which has greater durability than just about any other plastic in this realm. Speak to our pros to learn more about this particular plastic type.


For various takeout containers, squeezable bottles, butter or margarine containers and related needs, one of the most common plastics used is known as polypropylene, or PP. This is a non-toxic plastic that’s naturally resistant to most chemicals, plus is very tough – all while still offering great elasticity and resisting fatigue in the process.

PP is also great in both high and low temperatures, at extremes in both cases. This makes it extremely versatile to work with, so while the above categories we went over are certainly some of those it’s used for, chances are you’ve seen it in many other areas as well.


Finally, the last common plastic you’ll find in many injection molding applications for food processing is polystyrene, or PS for short. PS is known for its extremely low melting point, but this means it maintains its core properties even when exposed to cold temperatures.

For this reason, PS is most commonly used for rigid cutlery, cups, bowls and other specific serving items. PS is generally both clear and very hard, so it can be matched with a variety of aesthetics if required. It’s also perfect for things like yogurt or pudding containers, which require just the right level of rigidity but also other important properties. You’ll even find it on food or snack boxes regularly.

For more on the different plastic types that might be used in the food processing realm and related injection molding, or to learn about any of our plastic injection molding services, speak to the staff at EnviroTech Custom Injection Molders today.