RJG has been responsible for many innovations in the plastics industry:

  • Systematic Injection Molding Seminars
  • Commercial strain gage cavity pressure sensors
  • DECOUPLED MOLDING® techniques
  • The eDART® System—the plastic industry’s first digital data acquisition platform
  • The Master Molder® program


Our business is helping molders supply absolute quality parts to their customers. We do this by providing process control systems, cavity pressure sensing technology, and processing training to the injection molding industry.


Launched the CoPilot
Launched The Hub
Launched the Part Design and Mold Design courses
Released the 6mm Strain Gage Sensor


Opened its training facility in Gibsonville, NC
TZERO® group begins offering Part Design Analysis
Building expansion: Adds a 2nd level to RJG headquarters


Acquired G&A Moulding Technology in the United Kingdom, which became RJG Technologies
Launched the TZERO® program
Released Sensor eValuator
Partners with  Burger & Brown Engineering to offer Smarflow sensor
Launches the Scientific Cooling course
Training program win’s the Pike’s Peak award


Opened its training facility in Woodstock, GA
Released the 3.5mm piezoelectric button in mold sensor
Released the first multi-channel system for strain gage sensor


Opened RJG China in Chengdu, China
Version 10 eDART System is released
Math for Molders course is released
Launched Systematic Molding for LSR course


Opened RJG Mexico in Chihuahua, Mexico


Opened RJG Ireland in Nenagh, Ireland
Launches Load Washer sensor line


Opened RJG Germany GmbH in Karlstein, Germany
Launches the Lynx Embedded Sensor plate


Released 1mm flush mount and 1.5mm spring loaded temperature sensors


Opened RJG (S.E.A.) Pte, Ltd. in Singapore

Opened RJG France in Oyonnax, France


eDART flx is released


Launches online training assessment on their website


Introduced the Tryout Shop Certification Program


Introduced first digital piezoelectric in-mold cavity pressure sensor


Released Valve Gate Control system software, and “Transfer Pin” cavity pressure mounting method for measuring pressure under valve gate pins


Developed “fail-safe” automated abnormal part containment


Released the eDART System—the plastics industry’s first digital data acquisition platform with Lynx smart sensor technology, demonstrated independent valve gate control systems, and began offering piezoelectric and strain gage sensors


RJG Associates and RJG Technologies merge to form RJG, Inc.—one company servicing the plastic industry with sensors, process control, and training solutions

Introduced the DARTAlert software program


Introduced the RJG Master Molder® Program


Introduced DARTVision (Windows-based data acquisition)


Named one of Michigan’s Top 100 Fastest Growing Companies for four consecutive years (the award was discontinued after 1999)


DART (Data Acquisition and Retrieval with Transducers) and DARTNet are introduced—PC-based data acquisition


Rod Groleau co-founded RJG Technologies, Inc., an equipment company supplying sensors and data acquisition systems


Rod Groleau founded RJG Associates, Inc., a consulting and training company, where he developed the concepts of in-mold rheology techniques, load sensitivity testing, and principles of rigorous mold tryouts and DECOUPLED MOLDING® techniques


Rod Groleau worked as Director of Technology at DME, where his responsibilities included expert process analysis using voice synthesis as the operating interface


In 1969, Rod Groleau completed his MBA from Michigan State University and co-founded Control Process, Inc., where he developed the first commercial strain gage cavity pressure sensor and manufactured the industry’s first computerized production monitoring system; Rod remained with Control Process, Inc., through 1981


Rod Groleau began work as a co-op student at the General Motors Institute (GMI), where he remained through graduation in 1967; during this time, Rod completed his thesis on Injection Molded Part Size Control