Plastic Material selection is one of the most crucial factors in injection product when developing an injection mold design. With hundreds of commodity and engineering resins available on the market today, the material selection process for plastic injection molding jobs can often seem daunting at first. Below are some of the most popular materials for plastic injection molding:
Polypropylene (PP) is known for its flexibility in packaging, fluid management and processing, and household goods, as well as some automotive applications. it still offers good resistance to chemical solvents and electricity.
High Impact Polystyrene (HIPS) provides tough, low-cost performance and highly customizable surfaces: It can be printed, glued, bonded, and decorated easily. Although flammable, flame-retardant varieties are available.
Acrylonitrile Butadiene Styrene (ABS)With outstanding impact and mechanical strength, ABS is used in a wide range of industries and applications, from automotive to piping. Metal coatings can easily adhere to this material, making it well suited for products such as desktop phones, shower heads, and handles. ABS does not have good chemical resistance.
Polyamide (Nylon)is commonly found in applications involving high service temperature, low coefficient of friction, chemical resistance, abrasion or wear, and toughness. Nylon tends to absorb water from the environment over time, which affects its dimensional stability.
Polycarbonate (PC)is a tough and very durable engineering thermoplastic material. Polycarbonate is naturally transparent and one of the highest impact resistant materials available, making it a popular choice for use in protective eyewear, automotive headlamps, architectural uses and assorted packaging applications.
To ensure you select the right Plastic material for your project, keep in mind the following variables:
1. Impact strength — Some applications require more base strength than others, so a resin’s Izod impact strength should be determined from the start.
2.Tensile strength — Ultimate tensile strength, or ultimate strength, measures the resin’s resistance to tension and its ability to withstand a given load without pulling apart.
3.Flexural modulus of elasticity — This refers to the degree to which a material can be bent without damage and still snap back to its original form.
3.Heat deflection — This is especially important for applications that require insulating performance or tolerance for a variety of temperature ranges.
4.Water absorption — This is based on the percentage of liquid taken on by a material after 24 hours of immersion.
Choosing the right plastic material from the start will not only save you time, and money but will also ensure optimal performance and manufacturability. Research your options carefully, and consult with an experienced plastic injection molder to help determine the ideal choice.