Plastic Injection Molding
Precision Plastic Injection Molding Services — Montrose Molders Corp.
Delivering Quality-Engineered Parts Since 1966
If your project takes accuracy, consistency, and dependability, Montrose Molders Corp. is the plastics injection molding company you can trust. We have been manufacturing for over five decades and are an ISO 9001:2015-certified factory in New Jersey. We have established that making and supplying excellent plastic parts for many industries are our strengths. Each time, we are delivering the products on time.
It does not matter if you have to order a prototype only or a million of production parts, our knowledgeable team and advanced machinery can fulfill your very rigorous demands.
What We Offer: End-to-End Plastic Injection Molding Services
Our plastic injection molding services are designed to support you throughout your project, from the preliminary idea to the execution stage. We consider ourselves as your genuine manufacturing partner, the complexity will be our responsibility so that you will be able to focus your activities on your business.
Custom Injection Molding Our set of 51 molding machines – with the capacity of the clamping force from 40 to 1000 tons – enables us to deal with projects of any size and complexity, from simple shapes to complex, tight-tolerance parts. In case you are looking for low-volume production or high-volume productions, we are not only equipped but also can offer you the expertise you need for the fulfillment of your demands.
Precision Engineering We are capable of offering you precision injection molding services that is able to produce parts with the level of control over dimensions that can achieve 1/3 of the tolerance range specified. Our engineering staff, through extensive familiarity with materials, process parameters and tooling, guarantees that every part will be fully compliant with your utmost requirements.
Material Expertise We have been working with different plastics from commodity resins to the most engineering-grade polymers to cover the whole spectrum of possible plastic materials. Our technical team will provide you with material options to help you achieve the best balance of performance, cost, and manufacturability for your specific need.
Expert Plastic Injection Mold Design — Built Right the First Time
Great parts start with great tooling. Our own engineers for plastic injection mold designs save Montrose engineers from other firms their costly center point when their computer resources have focused on designing a new part. Our engineers use the latest SolidWorks Plastics Simulation software to predict plastic flow fill warp and shrink factors at the time of design.
The outcome is: Molds that are design ready to perform from day one drastically eliminating costly rework, decreasing lead times and providing a quality output throughout your entire production run. We create our molds ourselves using aluminum for prototyping and steel for production all here in our States.
You get to oversee the entire tooling process from conception to delivery.
Why Choose Montrose Molders as Your Plastic Injection Molding Company?

- Over 50 years of Experience- We started out in 1966 as a precision tool shop. Today, Montrose is a precision manufacturer, financially stable, vertically integrated company supplying quality products to business leaders in many industries.
- ISO 9001:2015 Certified- The quality management system we maintain guarantees that every component meets demanding requirements before it departs our premises.
- Vertically Integrated Facility- Injection molding tooling extrusion, decoration of products, assembly and shipment, all under one premises in New Jersey.
- Scalable Capacity- Over 20 injection molding machines (40 1,000 ton clamp capacity), in excess of 25,000 sq.ft. of assembly space running up to 5 lines at a time.
- Fast Lead Times- We have everything right here, so we avoid waiting around for outside vendors.
- Highest level of Support – Your sales engineer will work with you throughout the quote order delivery process to ensure your project is on-time.
Industries We Serve
We provide plastic injection molding service for industries that are very different from each other, for example automotive, medical devices, consumer goods, industrial equipment, electronics, and many more. No matter which industry you belong to, Montrose Molders has both the technical expertise and manufacturing production to make your parts come alive.
Start Your Project Today
Want to deal with a reliable plastic injection molding company that can give you a good outcome? Get in touch with Montrose Molders Corp. to ask for a quote. One of our knowledgeable sales engineers will examine your needs and offer a quick, competitive quotation customized to your project.