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Choosing the Right Materials for Complex Injection Molding

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Thermoplastic Elastomer (TPE) v. Liquid Silicone Rubber (LSR): A Brief Comparison

Complex injection molding is a viable solution for many projects, but there’s often hesitation in using it because of confusion about which material matches the job. While “thermoplastic” and “thermoset” sound similar and both are appropriate for a wide range of applications, the material properties of these two resin categories and how they behave during processing ultimately reveal the best fit.

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Which Plastics Work Best for Rugged Design?

Manufacturers of rugged electronic devices (and their end users—for example, the military) count on their “rugged” devices to perform in challenging real-life conditions, and survive being dropped. Therefore impact resistance is a critical feature in product design and starts with material selection.

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Antimicrobial Resins—Not Just for Medical Implants

Many industries can take advantage of antimicrobial resins. Examples where these resins are most commonly used include water-treatment systems, food packaging, plumbing and HVAC, medical/diagnostic equiptment, dental implants and personal care products. They are also utilized in clean room sensitive electronics testing and assembly, sterile packaging, conveyers, public transportation, and office equiptment.

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How to Control Your Surface Finish

Surface finish on plastic composites can vary a great deal, depending on the physical and chemical properties of the polymer blend, as well as the parameters of the injection molding process.

The first objective is working with the client to determine how important the surface finish is for the appearance and/or performance of the final product. For example, does the product need to be eye-catching or simply functional? Depending on the answer, the material selected and the desired finish will determine the settings for the injection molding process, as well as any secondary finishing operations that might be required.

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What is Engineering Grade Plastic?

Commodity plastics are versatile materials appropriate for a breadth of applications. However, specialty or complex injection molded parts like those required for medical, fire, and safety industries may contain requirements that mainstream polymers can’t fulfill, such as chemical resistance, fire retardant properties and mechanical grade strength.

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Plastic Regrind Saves on Money and Materials

Controlling costs is a huge part of any project. Materials can be expensive, especially advanced or specially-engineered resins, so you want to get as much bang for your materials buck as you can. One way to do this is the proper use of regrind.

There is always some unused thermoplastic material that is left over from injection molding, typically taken from mold components such as gates, flash, runners, and sprues. What's the point in wasting it.

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Chemical Resistant Resins for Medical Applications

Critical-use medical devices are essential in the performance of important and often life-saving tasks. As such, they often boast complicated designs and functionality that require the expertise of a complex injection molder to produce. However, that’s only part of the equation.

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Top 5 Injection Molding Defects in Medical Applications

Complex injection molders entrusted with producing plastic components for medical and other critical-use applications assume a high degree of responsibility to ensure the device performs properly, without fail in sometimes life-endangering situations.

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Choosing Plastic Materials for Military and Safety Applications

Today’s military is deployed around the world, and that requires defense/safety contractors to develop equipment that performs in a variety of environments and situations. They’re increasingly considering plastic materials for military applications, but developing solutions isn’t without complexities.

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