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Rapid Injection Molding Prototyping

Why Choose Injection Molding for Prototyping

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While plastic injection molding is known for mass-producing high-quality parts, its high mold costs can seem prohibitive for creating just a few prototypes. So, why opt for injection-molded prototypes?

1. Strategic Process Selection in Product Development

Injection molding is not suitable for early-stage proof-of-concept or look-liked models. However, it is crucial in later development stages for creating functional prototypes and pre-production models. These prototypes can verify form, fit, function, final appearance, and practicality, helping to avoid issues during mass production.

2. Economical for Large Quantities of Prototypes

When a large number of prototypes are needed, injection molding becomes more cost-effective. The mold cost can be spread across multiple prototypes, reducing the unit price. Additionally, injection molding ensures consistent quality across all prototypes, making it increasingly advantageous as the quantity required grows.

3. Preventing Design Errors

Although 3D models and printed prototypes are valuable in initial stages, they don't fully replicate injection-molded parts. Using injection molding for prototyping helps identify and resolve several common issues:

- Surface and Appearance Defects: Many defects are only noticeable through actual injection molding.


- Uneven Wall Thickness: Improper wall thickness can lead to production failures and must be verified with real injection-molded parts.


- Gate Design: Correct gate location and type are critical for mold filling and part quality, requiring testing through injection molding.


- Dimensional Accuracy and Material Behavior: Parts may shrink or deform during injection molding, issues that can be detected and adjusted during prototyping.


Prototyping with injection molding not only validates all aspects of the design but also helps avoid potential design errors before production, ultimately saving time and money.

Injection Molding Prototyping Processes

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Custom insert molding

Insert molding involves injecting molten thermoplastic around a pre-positioned insert, resulting in strong and durable prototype parts.

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Overmolding is a process where multiple layers of thermoplastic are injected over or around a substrate, creating customized prototypes.

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 Why Choose Lori for Your Injection Molded Prototypes

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We prioritize our customers' application needs, ensuring that our solutions meet their requirements for accuracy, aesthetics, surface finish, yield, secondary processing, and special treatments. Recognizing that successful projects hinge on close collaboration, we maintain timely and effective communication with our clients at every critical project stage.

Fast delivery is a core competency; we can deliver injection-molded parts in as little as five working days, ensuring timely access to the products our customers need. Additionally, we have strong relationships with leading thermoplastic material manufacturers, offering our customers a wide variety of material choices.

Our in-house capabilities encompass design, mold production, and injection molding, providing a one-stop solution to various customer challenges. We excel in handling highly complex parts, thanks to our extensive experience and deep technical expertise.

Our molds and production tools set industry standards for quality and value, particularly our lifetime molds, which exemplify our advanced technology and exceptional service.

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