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For over 50 years, Prent has pioneered thermoforming processes and developed numerous innovations that have helped advance today’s industry standards. We take pride in our outstanding design capabilities, having won more WorldStar Packaging Awards than any other medical or pharmaceutical company in the world.


Prent Established

Jack Pregont starts Prent Corporation on Harding Street in Janesville, WI with two thermoform machines and 15 employees.


Prent Relocates

Prent relocates to a new facility on Kennedy Rd. in Janesville, WI to address double digit sales growth since 1967.


Extrusion Starts

Plastic sheet extrusion starts at Harding St.


Joe Pregont Becomes CEO

Joe Pregont, second generation, becomes the President and CEO of Prent Corporation.


CNC Machining

Prent introduces CNC machined production tooling to address customers' needs for a more repeatable finished part.



GOEX Corporation is spun off to build a dedicated facility to focus on driving high quality plastics to the medical market and niche markets.


ISO Certified

Prent becomes the 1st thermoformer to be ISO 9000 certified.


Opens Satellite Facility

Prent opens the 1st satellite manufacturing facility in Flagstaff, AZ utilizing Prent's standardized thermoformers that are designed and built by Prent.


Prent Flagstaff Recognized

Prent AZ is recognized by the city of Flagstaff for pioneering environmental leadership.


Clean Room Manufacturing Begins

Prent WI 1st clean room manufacturing begins.


Prent Goes Global

Prent's footprint expands globally by opening its first greenfield manufacturing facility in Malaysia to address the packaging needs for electronics and medical device companies.


Prent Opens Second APAC Facility

Prent opens a second APAC facility in Shanghai, China. A new facility is built in 2009 and operations are expanded and updated in 2012 with clean room manufacturing.


Puerto Rico

Prent opens a clean room manufacturing facility in Yauco, Puerto Rico to service medical and pharmaceutical OEM's in Puerto Rico and the Dominican Republic.


Machine Build Facility Opens

Prent constructs a dedicated Machine Build facility in WI to build identical thermoformers used globally. Matched equipment globally allows for a repeatable process, simplified tool transfer validations, and fulfills risk mitigation needs for customers and Prent alike.



Prent opens a certified clean room manufacturing facility in Holbaek, Denmark. The facility is favorably positioned to service the entire European community. In 2013 a strategically located JIT warehouse is set up in Ireland to meet the growing customer base.


Costa Rica

Prent builds a clean room manufacturing facility in Heredia, Costa Rica to address the medical OEM needs in the Central American Isthmus and South America.


New GOEX Facility

GOEX builds a state-of-the-art plastic rollstock and sheeting extrusion facility in Janesville, WI.  Continued growth prompted the need to expand the facility in 2015 to house additional personnel, equipment and technology. 


3rd Generation

The 3rd generation of Pregonts, (Michael, Joe II, and Rachel), join the leadership team at Goex or Prent.


Progressive Tool Room

Prent WI reinvests in a multi-million dollar tool room that incorporates a custom, 24/7 automated CNC tool milling system and newer CNC mills to build tools faster and improve the customer's speed to market.



Rosarito, MX is the location of Prent's 10th, and newest, certified class 8 clean room satellite manufacturing site. The facility is strategically located to service the medical cluster in the Tijuana/Baja region.