Strong Values & Unmatched Customer Service

Sussex IM runs over 60 injection molding machines – ranging from 25 to 725 tons. We have experience processing over 100 engineering-grade performance resins. Our manufacturing floor has the latest model molding machines, along with some of the very first we ever purchased! As an industry leader in custom injection molding, we keep moving forward with cutting-edge technologies and lean manufacturing practices. Our state-of-the-art Innovation Center is the hub of Sussex IM, where dedicated employees converge to create the quality products our loyal customers expect.

Our Mission is to solve problems to satisfy consumer needs

Our Vision is to mold and fulfill the future for our employees and customers

Our Core Values are Customer Focus, Ethics, Communication, and Teamwork


Sussex IM is centrally located in Sussex, WI; approximately 30 miles from the General Mitchell International Airport (MKE).

  • 2 Manufacturing Facilities
    • HQ Facility – 122,000 sq. ft.
    • Advanced Manufacturing Facility – 87,000 sq. ft.
      • 2020 Expansion of additional 71,000 sq. ft.
  • 67 Injection Molding Machines
    • 25T – 725T
  • ISO 8 Class Clean Room Capacity

Advanced Manufacturing Facility

HQ Facility

Our People

Our People

Sussex IM is a Midwestern, family-oriented business built on trust, teamwork, communication and ethical decision making. We work together to utilize our skills and wealth of experience to find the most efficient and cost-effective solutions for our customers. At Sussex IM we promote furthering education and continuous improvement. We strive to hire from within and aim to allow every employee the opportunity to grow within the organization.

The SIM Team:

  • Values Partnerships
  • Cares about every customer
  • Finds solutions
  • Is relatable and proactive

At Sussex IM, Our People Are Everything.

Sussex Brands

Through our Business-to-Consumer division, Sussex Brands, we handle end-to-end operations for branded consumer products and ship directly to leading national and international retailers. We are proud to be a “Made in the USA” manufacturer and are driven to provide consumers solutions that fit into their everyday lives.

Brands Include:

  • Mr. Lid: Sussex IM’s Patented Storage Solution

Our History

Sussex IM was founded on April 15, 1977, as Sussex Plastics Incorporated by Lorand Spyers-Duran, a Hungarian Immigrant.

Sussex IM, today, is an internationally renowned, full-service, fully automated supplier that solves problems to satisfy consumer needs. The company’s capabilities include B2B and B2C – in markets that include consumer goods, cosmetics packaging, healthcare products, agriculture products and industrial applications.

Sussex IM’s end-to-end suite of services extends from product design to warehousing. Importantly, the company has extensive automation design capabilities and an in-house, dedicated staff of automation engineers.


With a responsibility to the community in which we do business, Sussex IM is committed to protecting the environment and the health and safety of our employees, customers, and neighbors. We also encourage and support our employee’s involvement in community environmental activities.

We believe that environmental, economic and human needs can be met simultaneously.
We develop and implement practical measuring and reporting systems to ensure we are continuously reducing our impact on the environment.

Sussex IM Sustainability Practices:

  • Returnable Packaging
  • Post-Consumer Recycled Material
  • Bioresins
  • Regrinding for Reuse
  • Energy Efficient Machines and Facilities

ISO Certifications

Sussex IM complies with the Global ISO (International Standard of Operations) Standards
with respect to safety, quality and the environment.

Certifications Include: ISO9001, ISO14001, ISO45001, ISO13485

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Please feel free to contact us; we would love to help!