Short Run Injection Molding and the Industries That Benefit from It

Sep 28, 2023, 15:11 PM by The Stoner Molding Solutions Team
Many companies struggle with finding efficient ways to produce high-quality components in small quantities. Traditional injection molding processes may not be suitable due to high tooling costs, extended lead times, and the need for large production volumes. These limitations often hinder the ability to respond quickly to market demands, leaving businesses at a disadvantage.

Black plastic parts still attached to runners and sprues from injection molding.Many companies struggle with finding efficient ways to produce high-quality components in small quantities. Traditional injection molding processes may not be suitable due to high tooling costs, extended lead times, and the need for large production volumes. These limitations often hinder the ability to respond quickly to market demands, leaving businesses at a disadvantage.

It’s frustrating to have a brilliant product idea or a new project that requires rapid prototyping or small-batch production, but not having the capability to produce the test product. The lengthy and costly tooling process associated with conventional injection molding can be a significant roadblock, hindering innovative product development and market entry. Production delays can result in missed opportunities and potential loss of customers and market share.

Here's where short run injection molding offers a breath of fresh air. By leveraging advanced technologies and skilled expertise, short run injection molding provides a cost-effective and efficient solution for small-scale production. With reduced tooling costs, quick turnaround times, and the ability to produce quality parts in the thousands or even just a few hundred, short run injection molding empowers companies to respond swiftly to market demands, effectively manage product development, and seize opportunities.


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What Is Short Run Injection Molding?

Short run injection molding refers to a manufacturing process that specializes in producing plastic parts in small quantities, typically ranging from a few hundred to a few thousand units. It offers a cost-effective solution for companies that require rapid prototyping, low-volume production, or customized components. In this process, a mold is created, and thermoplastic materials are injected into the mold cavity under high pressure. The mold is opened once the material cools and solidifies, and the finished part is ejected.

The advantages and benefits of short-run injection molding are numerous. First, it allows for quick turnaround times, enabling companies to bring their products to market faster. This fast process is particularly advantageous for industries where time-to-market is crucial. Additionally, short run injection molding is a cost-effective solution, eliminating the need for expensive tooling and molds associated with larger production runs. Companies with limited budgets can benefit from this approach without compromising on quality. Furthermore, this process allows flexibility and agility in design iterations and product improvements, making it ideal for companies that value innovation and adaptability.

Which Industries Benefit the Most from Short Run Injection Molding?

Short run injection molding finds application in various industries. Still, four key sectors stand out for reaping significant benefits from this manufacturing process: the automotive industry, the electronics industry, the medical device industry, and the packaging industry.


A red luxury car in the desert.

In the automotive industry, short run injection molding plays a vital role in customizing parts for specific models. It enables manufacturers to produce limited quantities of high-quality components with precision, ensuring a perfect fit and finish. This top-tier quality is particularly valuable for luxury and exotic car manufacturers who offer high-end vehicles in limited numbers. By leveraging short run molding, they can maintain exceptional quality standards while meeting the demand for exclusivity.


The electronics industry benefits from short run injection molding through rapid prototyping and quick production of consumer electronics. This fast-paced process allows companies to test and validate product designs before committing to large-scale manufacturing. Unlike 3D prototyping, which often limit sample quantities, short run molding offers the ability to produce more samples in less time, providing greater flexibility for design iterations and improvements.


In the medical device industry, where stringent regulations and precision are paramount, short run injection molding accelerates the development process for medical devices. It enables cost-effective production of small-batch components, making it suitable for niche applications or specialized medical devices that require limited quantities. Short run molding ensures high quality and reliability while meeting tight timelines and maintaining compliance with regulatory standards.


The packaging industry benefits from short run injection molding by enabling the creation of unique packaging designs for limited-edition products. It allows companies to meet specific packaging requirements for new product launches, ensuring eye-catching and functional packaging solutions. Short run molding provides the flexibility to produce a limited number of parts while keeping options open for future design changes or additions.

Factors for Using Short Run Injection Molding Solutions

When considering short run injection molding solutions, several factors come into play. These include cost factors and budget considerations, design limitations, material selection, and the use of the right molding products.


Short run injection molding offers cost advantages compared to larger production runs. Since fewer parts are required, less expensive mold materials such as aluminum or lower steel grades can be used, reducing tooling costs. With lower upfront costs, short run injection molding becomes accessible to a broader range of customers with smaller budgets. Additionally, adjustments and modifications can be made without significant financial commitments, and prototypes may require less finishing than in 3D printing, saving both time and cost.


Multicolored thermoplastic polymers.

Short run injection molding does not significantly restrict resin requirements due to the mold material. It allows for utilizing a wide range of resins available in higher volume molding processes. Material selection plays a critical role in determining the final product's quality, durability, and performance. Factors such as environmental conditions and specific requirements need to be considered when choosing the appropriate material. By carefully selecting the right material and considering design limitations, companies can ensure that the chosen material meets all necessary requirements while remaining cost-effective.


Utilizing the right molding products is crucial to enhance the short run injection molding process. Mold sealers are commonly used to fill in the microporosity of molds, resulting in an even finish on the molded parts. Mold release agents aid in easily releasing items from the mold after the molding process is complete. Mold cleaners help maintain the cleanliness and longevity of molds, ensuring optimal performance over multiple production cycles.

By considering these factors and leveraging the benefits of short run injection molding, companies can achieve efficient and cost-effective production for their customized components prototypes.

Need Help with Your Molding Operations?

Short run injection molding provides a game-changing solution for companies seeking efficient and cost-effective manufacturing processes for small-scale production. We have explored the numerous benefits of this innovative technique, from its ability to meet the demands of various industries to its flexibility in customization and rapid prototyping.

By leveraging our advanced products experienced team, and commitment to excellence, we aim to make your production processes more efficient, cost-effective, and responsive to market demands. Contact us today to explore how our short run injection molding products can empower your business to create precise, high-quality parts quickly and easily.

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