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Benefits of Plastic Automotive Molding of Car Parts

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2020 Kia Soul GT-Line interior
There are some benefits to using plastic automotive molding for certain parts of vehicles
Photo: Kia Motors

Industry manufacturers are increasingly using plastic molded parts. Injection molding involves injecting molten material into a mold or pre-design. Automotive injection molding using plastic is a common method of producing parts because it is sustainable and able to serve the increasing demand. There are a variety of parts done through injection molding, including pads and cushions, backlighting controls and buttons, and acrylic lenses. Plastic molded parts popular across the globe. Below are the benefits do you gain by having a car made with injection-molded parts.


Results into a reduction in total car weight

Plastic molded car parts lead to decreased car weight, which results in efficient fuel consumption. Because the car engine has a lesser weight to move, the engine becomes more responsive. The result is less fuel spent and lower emissions. Manufacturers use plastics in the place of heavier metals such as steel and aluminum. Even the weight of vehicles which carry cargo is becoming increasingly lighter as more interior parts including the engine are made through plastic molding.


Produces automotive parts with high accuracy

Errors in the design of parts can result in future car problems. With the engine, for example, the angles of the parts must be precise, failure of which can lead to leakages and fuel loss. Plastic injection molding involves low-errors and high tolerance, enabling the production of fool-proof parts which are effective and long-lasting.


The car parts made from plastic molding are high-strength

Car parts made from plastic injection molding are robust. This method of parts manufacture enables the enhancement of fillers to elements. The fillers make the liquid plastic thinner or less dense, and the end product more durable.

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The ability to add numerous detail onto parts

Plastic injection molds pass through very high temperatures which cause the plastic to press harder against the mold, unlike other processes. The excessive pressure makes it possible to add design into the part. Further, high pressure enables the production of intricate and complex shapes. Coming up with accurate complex shapes require good prior design. Some of the design elements which manufacturers consider include the thickness of the walls, corner transitions, boss design, gate placements, vents in the right places, and more.

Flexibility in the material and colors used

Due to the wide variety of material and color available for plastics, the possibilities for production are endless. Polymers have advanced over the years, leaving manufacturers with so many resins to choose from. Resins vary according to impact and tensile strength, elasticity, water absorption, and heat deflection. Plastics can also take on different colors by use of the various coloring systems. Coloring techniques include precooled resins, liquid color, and salt and pepper blends.


Plastic injection molded parts also have a high-surface finish. Various finish options are available to manufacturers. These include glossy textures and rough or matte textures which are applied on the mold. In the automotive industry, safety, durability, consistency, and quality are of very high importance.Plastic injection molding has become thesolution to the age-old problem of bulky and inaccurate parts. It enables the production of high-quality parts.

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