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Midstate Mold & Engineering

Precision Plastic Injection Molders

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Making the Switch to Plastic Injection Molded Parts

Plastic injection molding machine at work at an expo.

Whether you’ve always used parts manufactured from other materials or are just exploring your options, you might be surprised by what modern plastics can do. From having the strength and rigidity of metals to the transparency and chemical resistance of glass, modern-day plastics can be used to replace other materials in your parts, with added bonuses such as less weight and complexity and lower cost. Interested in making the switch to plastic injection molded parts? Let’s go over everything you need to know.

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Resin, Polymer, and Plastic: What Difference Do These Terms Have?

Hands holding green resin pellets above a bag filled with more.

If you’re looking at plastic manufacturing, you’re going to see these three terms a lot: resin, polymer, and plastic. Sometimes they are used seemingly interchangeably, and other times seem to refer to specific kinds of feedstock or products. Today, we’re going to demystify the difference between these terms as well as give you some useful starting places if you’re just getting into plastic use in the injection molding industry.

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Causes and Prevention of Burn Mark Defects in Plastic Injection Molding

Close-up of a plastic injection molding machine.

The goal of every plastic injection mold and parts manufacturer is to have each mold and part come out without issue or defect. However, like with all manufacturing processes, these flaws can be introduced due to a myriad of situations. Today, we’re looking at the plastic injection molding defect known as burn mark defects—what they are, what causes them, and how your injection molder can help avoid it in the first place.

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The Importance of Properly Dried Polymer Resin in Manufacturing

An often-overlooked part of the plastic injection molding parts manufacturing process, the use of a resin dryer is a key part of producing quality parts, every time. Today we’re going to look at how properly dried polymer resin in manufacturing can be such a big deal, how dryers fit into a larger plastic injection molding QA program, and how not all dryers are created equal.

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Maintaining Critical Plastics Productivity While Increasing Sustainability

Man standing with green safety helmet in front of manufacturing site.

The continuing trend of sustainability in all aspects of manufacturing and industry is coming from the top in form of government regulations down to the bottom in terms of customer preference. This means you may need to change your own company’s sustainability initiatives, which can be challenging if your production relies on plastic parts. Today, we’re going to look at how you can maintain plastics productivity while increasing sustainability in your industry by working with the right plastic injection molding manufacturer.

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Popular Resin Combinations for Plastic Injection Molding

Red and blue polymer resin in sample test tubes.

One of the major strengths of polymer resins in injection molding is the staggering array of plastics to choose from in the use of your part molds. There are plastics that are flexible, rigid, transparent, heat-resistant, strong, and other characteristics. Today we’re talking about another exciting feature: they are also combinable. Much like with metals, polymers can be combined to make new blended plastics with both or new strengths. Let’s go over three of the most popular resin combinations for plastic injection molding and where to go from there.

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