One of the most important aspects of any product development project using Injection plastic mold is choosing the right material, as it directly affects the molding operation and also the part performance. There are thousands of plastic materials available in the market. So, how do you make sure you select the right one?

When choosing a plastic, the first thing you have to consider is the part function and its environment. What material would be best suited for the part’s application? Then the material’s strength, durability, flexibility, color and cost come into play. To help you better understand this process, here is a list of some of the most common plastic molding materials and their applications.

Nylon (Polyamide)

Nylon is often used for quick-release buckles

Nylon is often used to produce strong mechanical parts. Bushings, gears and bearings are some common automotive parts produced using nylon. It is tough, and has a high melting temperature, good wear and chemical resistance. Nylon is also known by its chemical designation PA (Polyamide).

Acrylic

Acrylic tubes can be tinted for multiple effects

We use acrylic to produce transparent parts such as windows, transparent walls and various lighting equipment. It is often used as an alternative to glass due to its high tensile strength and weather and scratch resistant nature. On top of its optical and transparent properties, it also has many unique qualities. You would usually spot this material in refrigerators and containers to store food, as acrylic is odorless and tasteless and doesn’t contain Bisphenol A (BPA), a potentially harmful organic synthetic compound that’s not suitable for food preparation and storage.

Polycarbonate

Polycarbonate compact discs are very durable

Polycarbonate has excellent optical properties and is extremely durable. When molding with this amorphous thermoplastic material, precise dimensional control can be maintained as it has predictable and uniform mold shrinkage. We use polycarbonate when we need something substantially stronger than acrylic. This material is not suitable for food storage and preparation as it contains Bisphenol A (BPA).

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