There are many different plastic resins, but a handful seem to stand out above the rest when it comes to custom injection molding in Missouri.  This article will cover the most common resins and what they are typically used for.  These resins include:

  • Acetal
  • Polypropylene
  • High-Impact Polystyrene
  • Low-Density Polyethylene
  • Acrylonitrile Butadiene Styrene

custom injection molding in Missouri


Commonly known by the brand name Celcon®, Acetal is a plastic widely know for its toughness, solvent resistance, heat distortion, moisture absorption, and for being easy to colorize.  This plastic is widely used in custom plastic injection molding in Missouri, especially in the food & beverage industry, auto & mechanic industry, and for many household applications that we used regularly.

Acetal is a popular choice in the toy industry as many toy manufacturers use it to make toy parts.  It is used for various bearings and gears because it dramatically reduces friction that results from contact.


One of the most commonly used plastics worldwide is polypropylene.  This plastic resin is known as “PP” by those who specialize in custom plastic injection molds in Missouri.  This particular resin is no for its elasticity, toughness, and insulation.  One drawback to PP is that it is vulnerable to UV rays and is flammable, even though it is still very resistant to electricity and solvents.

High-Impact Polystyrene

Another resin that scores high when it comes to impact resistance, machinability, customizable surfaces, and aesthetics qualities is high-impact polystyrene or “HIPS.”  Many, who like to implement lots of customizations, prefer HIPS because it can be glued, printed, decorated, or bonded much more easily than other materials.  HIPS is used for custom injection molding in Missouri for things like promotional signs, posters, and garden stakes.

custom injection molding in Missouri

Low-Density Polyethylene

A resin that offers high moisture resistance, strength, translucence, and chemical resistance is low-density polyethylene or “LDPE.”  A wide variety of our everyday products and applications use LDPE.  It is most commonly used in custom plastic injection molding in Missouri to make products like housewares, agricultural items, wiring, and medical products.  More specifically, LDPE is used for shopping bags, bottles, lids, bottle caps, and many other items.

Acrylonitrile Butadiene Styrene

Appliances, phone handsets, computer-related items, and other office equipment, are all items primarily made with acrylonitrile butadiene styrene or “ABS.”  This particular resin is also a common choice for both automotive products and piping.  Those who specialize in custom plastic injection molds in Missouri, like ABS because it is widely regarded as being strong, rigid, and tough while still having a glossy, high-quality finish.

custom injection molding in Missouri

If you are looking for the right plastics company to assist with your next project, contact our team of experts at LeVic Plastics.  You can go online for a free quote or give us a call today at (800) 231-1232.