How to Find the Best Custom Plastic Injection Molding Companies

Partnering with the right manufacturer is not an easy task, but it is crucial for successful production. The decision comes down to more than just comparing prices. You also need to evaluate several key benchmarks before moving forward.

Metro Plastics is here to guide you through how to comb through custom plastic injection molding companies so you can find the one that aligns with your brand and business standards. For questions about the quality standards we hold ourselves to, our services, or our facility, reach out today. We’re eager to show you what has made us a leading choice since 1975.

What Custom Plastic Injection Molding Companies Typically Offer

One of the main reasons it can be difficult to evaluate custom plastic injection molding companies is that they typically offer a similar suite of design services and manufacturing solutions.

The design stage often encompasses:

Reviewing DFM
Material consultation
Prototyping

Manufacturing capabilities usually include:

Multi-cavity & multi-material molding
Insert molding
Over Molding
Short-run production
High-volume production
Custom packaging and automation
Inventory management
Welding
Logistics solutions
Transfer tooling

Custom plastic injection mold companies also typically have teams dedicated to mold repair and maintenance which is essential for consistency.

Steps to Find the Right Custom Plastic Mold Injection Company

Know Your Production Needs

Understanding the production scale, materials needed, design complexity, and regulatory requirements you need to follow are some of the most important factors you should consider.

Material selection, for example, should begin with a key question: does your product require engineering-grade, high-performance resins or more cost-effective commodity plastics?

Determine Your Volume Requirements

Custom plastic injection molding companies do not have the same capacity, so you need to find one that can produce the number of units you’re looking for. For prototyping, limited runs, market testing, and similar small-scale needs, low-to-medium volume manufacturing is best.

High volume custom plastic molding companies are better suited for consistently large-scale productions. They can execute hundreds of thousands to millions of units.

Ask a potential manufacturer about the tonnage of their machines and their machine fleet to determine if their facility will be able to accommodate your needs.

Confirm ISO 9001: 2015 Certification

This certification is given to custom plastic molding companies who undergo audits of their quality management systems each year. At Metro Plastics, we’re proud to hold this certification. It is a testament to how we prioritize output consistency and client satisfaction above all else.

Material Expertise

With all the different types of thermoplastic material to choose from, it can be challenging to figure out what would be best suited for your product. Even if you have an idea of the material you need, it is a good idea to consult with the custom plastic molding companies you’re considering. If they’re true experts, they’ll be able to determine the ideal plastic for your application. They can also go over secondary processes like stamping, surface finishes, engraving, and mold configuration.

Evaluate Communication & Customer Service

Custom plastic injection molding companies can have all the technical capabilities you’re looking for, but what really sets an ordinary supplier apart from a manufacturing partner is their customer service.

You don’t want to have issues arise or purchase orders go unfulfilled without an explanation or heads up from your manufacturer. You want someone who will catch mechanical problems or quality discrepancies as soon as they happen and notify you right away as they work towards a resolution.

Call a Custom Plastic Injection Mold Company You Can Count On

Metro Plastics has been in business as one of the top custom plastic molding companies for over fifty years, and that’s not by accident. Our clients know they can depend on us for every phase of the manufacturing process and more. We’re so sure of our standards, level of communication, and customer service that we offer ten percent off your order if we miss a shipping date.