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Plastic Injection Molding & Overmolding

A Full Suite of Plastic Injection Molding & Overmolding Capabilities

Plastic injection molding is a manufacturing process that melts plastic material until it's malleable enough to be pressure-injected into a mold, forming a high-quality part with incredible accuracy.

Overmolding is exactly what it sounds like: it's a variation of injection molding that allows you to mold one material over the other. It's commonly used to create soft-touch handles, grips, or multi-colored parts.

We have the equipment and expertise required to confidently handle a wide range of plastic injection molding and overmolding projects. We work with a variety of materials and can create impact-, scratch-, and chemical-resistant products with a specific stiffness and gloss appearance to ensure the final result is exactly what you're looking for.

The VMS Advantage

We provide a number of key advantages to help our plastic injection molding & overmolding clients get ahead of the competition.

Diverse Capabilities

We offer an expansive collection of plastic molding equipment, featuring 14 machines with various capabilities and sizes, which allows us to do more for our clients than the average plastic injection molding manufacturer.

In-House Value

Keeping your project in-house from start to finish helps you save time and slash production costs. In addition to our custom plastic injection molding & overmolding capabilities, we offer a whole collection of finishing services, so you can go from prototype to production under one roof.


New Product Development and Existing Product Manufacturing

Whether you’re working on new product development or simply looking to ramp up production on an existing product, we’re your trusted partner. Our seasoned team of experts will support you at every step of the NPD process, giving your new product the attention and dedication it deserves. And, if your existing product needs a new manufacturing base, we’ll run with your design and tooling to increase production with ease.

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Standard and Custom Tooling Options

We'll align our tooling resources with your budget and timeline to get the job done. As a VMS client, you'll be able to choose from our vast collection of current in-house tool dies, or work closely with our tooling engineer to make modifications. If neither of those options work, we'll design and build a brand new tool that perfectly matches your project's unique criteria.

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Global Sourcing

Our global sourcing team combines in-house coordination with on-the-ground efforts in the international marketplace to expand your sourcing options from both domestic and international suppliers.

Quality Certifications

Our manufacturing facilities are all ISO certified (ISO 9001), and our team of experts is well-versed in UL, CSA, NSF, ETL, and CE standards.

VMS Plastic Injection Molding & Overmolding at a Glance

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Vollrath Manufacturing Services is proud to be an American company manufacturing American-made goods. We also work to eliminate waste in our manufacturing systems via our Lean manufacturing team and Continuous Improvement/Kaizen events.

In-House Capabilities

We offer a wide selection of in-house processes and support services for custom plastic injection molding & overmolding projects. Here's a closer look at the on-site resources and capabilities available to you.

Product CapabilitesLarge Components
Mold Process TypeInjection Molding
MaterialsHomopolymer Polypropylene
Co-Polymer Polypropylene
High Density Polypropylene
Low Density Polypropylene
High Impact Polystyrene
Thermoplastic Rubber
Nylon-ABS Alloy
Glass Filled Polypropylene
Material Characteristics 
Impact Resistance
Scratch Resistance
Chemical Resistance
Clamping Force200 to 1,000 tons
Shot Size
8 to 179 oz.
Platen Width (Horizontal)
37 to 63.5 in
Platen Height (Vertical)
25 to 63 in
Tie Bar Width (Horizontal)
25 to 44.5in
Tie Bar Width (Vertical)

25 to 44 in
Tie Bar Diameter
4.25 to 48 in
Minimum Mold Size
7.9 to 14.6 in
Maximum Daylight
49 to 92.5 in
Production/Process Monitoring System
Molding Control Plans
Startup Authorization
Quality Inspections (3 times per shift)
Data Analysis & Lot Control
Additional Services Provided
Design for Manufacturability
Product Identification (hot stamping, silk screening)
In-House Tool Design, Fabrication, & Maintenance
Inventory Management
Safety Stocks
Production Volume
Prototype to High Volume
Industry Focus
Tier 2&3 Automotive
Dispensing & Self Service
Exercise Equipment
Food Service
Lawn & Garden
Metal Fabrication & Assembly
Process Control Equipment
Water Filtration & Purification
General Manufacturing
Industry Standards
ISO 90001:2015 Certified
NSF Compliance

Capabilities Related to Plastic Injection Molding & Overmolding

Selecting the best manufacturing partner can make or break your product, timeline, and budget. How do you know which one is right for you? Asking yourself a few key questions can ensure that you’re on the right track. Read the article below to identify what you need to know before making a final decision.

Are We the Right Supplier for You?

Every project comes with unique requirements, and choosing the best supplier partner for the job means finding one that has the right mix of knowledge, expertise, and capabilities to meet and exceed your expectations.

At VMS, we are committed to making the impossible possible. When our clients come to us with specific needs and creative challenges – it’s our job to deliver the custom industrial product solutions that will provide them with incredible results.

We’ve created this Project Request Tool to ensure that we are the ideal supplier partner for every client we work with. Please use the interactive fields below to tell us more about who you are, what you’re looking for, and to determine whether or not VMS is the right supplier for you.

Have an active project you’d like to discuss? Looking for more information about our services? Our team is ready to help you get started!