Common Applications of Plastic Injection Mold

Common Applications of Plastic Injection Mold


Injection molding is compatible with a wide range of resin materials. Understanding the needs of your specific application is important when determining the right resin for your needs. Common applications for different injection molding resins include:

ABS

Injection-molded ABS is used in a wide variety of applications including plastic wall panels for electrical outlets, protective helmets, keyboard keys, electronic components, and automotive components such as body parts, wheel housings, and dashboards. It is also used in a range of industrial accessories, sports equipment, and consumer products.

Polypropylene

Injection molded polypropylene is used in a variety of industrial, commercial, and consumer applications. For example, it can be used in power tool bodies, electrical appliances, packaging components, sporting goods, storage containers, and children's toys.

buttocks

Because of its higher impact strength, HIPS can be found in appliances, printing equipment, signage, and equipment components. Other common applications include children's toys and electronic components.

Low-density polyethylene

Due to its flexibility and resistance to moisture and chemicals, injection molded LDPE is commonly used in applications such as medical device components, wire and cable insulation, tool boxes, and children's toys.

How is Plastic Resin Made?

Manufacturers make plastic resins through a "cracking process," which involves heating hydrocarbons to break down larger molecules into propylene, ethylene, or other types of hydrocarbons. These monomers are then polymerized to form a polymer resin, which can then be collected for further processing, such as adding plasticizers, flame retardant chemicals, dyes, and more.

After the cracking process, these compounds form polymers that can be combined to make ideal plastic resins with the desired properties for the intended application. Once the desired resin is formed, it can be used in the injection molding process to make the desired product.

Key Factors to Consider When Selecting Injection Molding Materials

Custom Plastic Parts from The Rodon Group To ensure the correct resin is selected for your project, keep the following variables in mind:

Impact Strength – Some applications require higher base strength than others, so the Izod impact strength of the resin should be determined from the outset.

Tensile Strength — Ultimate tensile strength, or ultimate strength, is a measure of a resin's resistance to tension and its ability to withstand a given load

without pulling apart.

Flexural Modulus of Elasticity – This refers to the degree to which a material can be bent without damage and still quickly return to its original shape.

Thermal Distortion - This is especially important for applications requiring insulating properties or resistance to a wide range of temperatures.

Water Absorption – This is based on the percentage of liquid absorbed by the material after soaking for 24 hours.