World-Class Supplier of Reaction Injection Molding (RIM)

Design Guide
Design Guide
UL Recognized
UL Recognized
ISO 9001:2015
ISO 9001:2015

Premold Corp Expands to Mexico 2016-2017

Premold Corp Expands Into Mexico Premold Corp, a custom reaction injection molding (RIM) supplier of plastic enclosures for specialty equipment, has announced the addition of a second location in Monterrey, Mexico. The factory started pilot production in October 2016 and full production in December 2016. Premold has achieved steady growth throughout its 35 year history at its factory in Oconomowoc, WI. “Establishing a sister company, Premold...

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Premold Corp Building Expansion 2012-2013

 Premold Corp building expansion project has been completed from 30,000 SF to 68,000 SF.  The expansion project began in October of 2012 and was completed on schedule March 2013.                                          

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Reaction Injection Molding Process Seminar

  Download Reaction Injection Molding Process Seminar Low Volume Covers and Housings for the Life Sciences Industries presented by Lucas Boettcher, Regional Sales Manager.     Download the Reaction Injection Molding Process Seminar     Download (PDF,...

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Why Oconomowoc Community?

Located in northwestern Waukesha County,  in the heart of Wisconsin’s Lake Country, is where you will find Oconomowoc.  First settled by the Potowatomi Indians as Coo-No-Mo-Wauk, meaning where the waters meet, or river of lakes.   Oconomowoc’s unmistakable smaller city charm and its many beautiful lakes, offers a rural feel yet is close enough to the urban areas of Milwaukee and Madison.  A walk along the streets of Oconomowoc is...

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Available Positions

Here you will find our current available positions.  Click on the position you are interested in for more information.   Detail Finisher Industrial Painter Maintenance Technician Pattern Maker/Prototype Technician RIM Molder Sand Blast/Insert  

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Premold Process

Premold Process, Comprehensive RIM Solutions   The Premold Process is a unique approach that sets us apart from other RIM manufacturers.  You receive customized design consultations and detailed engineering services that result in comprehensive solutions. Customers tell that our approach is unique because how we do things sets us apart from other suppliers. The Premold Process enables you to put complex projects into production...

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Request for Quote

Quote Request Information The most efficient way to contact us for a quote is to e-mail Premold Corp. your CAD files and key information about your project. 3D CAD models allow us to deliver quotes to you faster and more accurately. We prefer SolidWorks files, although we can work with virtually all file formats. Budgetary quotes can be done in

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Apply Online

Online Application Form Premold Corp continues to offer fine career opportunities for qualified professionals and factory workers. We have expanded our factory workforce significantly, promoted a factory employee to factory supervisor, hired a second shift supervisor, added another customer service representative, and added another manufacturing eng

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RIM Resources Library

Use our Resources Library for more information on: Materials we use in the Reaction Injection Molding process Technical Reaction Injection Molding Webinar PDF of the Slide Presentation used for seminars Reaction Injection Molding Process...

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