RJG, Inc.

3111 Park Dr.
Traverse City, MI 49686 US


Company Profile

As Seen In Plastics Technology

Molder Gets Into World-Class Shape
Shape Corp.’s Grand Haven, Mich., facility challenges itself and its employees to run leaner, pushing productivity and efficiency to new limits.

RJG Opens New Training Lab in Germany
RJG Germany GmbH opened its new training lab on Jan. 1, 2020, including a classroom that seats up to 20 students and a fully-equipped lab for hands-on experience.

HRSFlow and RJG Pair Technologies for Advanced Process Control
By pairing HRS Flow’s servo-driven FLEXflow hot runner with RJG’s sensors and eDART controller, the collaborators say they’re able to sequence mold filling based on what’s actually happening in the tool vs. time or screw position.

RJG training Systematic Molding

Molding Better Molders, One Class at a Time
Founded by and named for Rod Groleau, RJG grew out of an appreciation for two burgeoning needs of the plastics industry: training to help people better understand the molding process and equipment to let them actually see what’s happening inside that process.

How Second-Stage Injection Speed Influences Your Process
As an injection molder, you’re familiar with first-stage fill-speed profiles and second-stage pressure settings, but have you considered the function of second-stage speed, or “hold flow”? Here’s what it does and how it affects your molded part.

Plastics training lab under construction at Central Community College.

RJG Partners with a Nebraska Community College on Injection Molding Training Lab
RJG and other partners are contributing to new plastics training lab at Central Community College in Columbus, Neb.

Molding Lab Opens at Nebraska Community College

RJG Helps Bring Molding Training to Nebraska College
Central Community College (CCC) to embed RJG education into curriculum when new training lab is completed in the beginning of 2020.

RJG’s newest 6-mm strain-gauge indirect cavity-pressure sensor.

Injection Molding: Smallest Cavity-Pressure Sensor With Higher Force Rating
Indirect sensor for high cavitation can be used with larger ejector pins.

Instilling pride of workmanship is a top goal of Natech’s in-house training programs. Here, head quality auditor Andrew Dunham examines electrical enclosure parts with operator Carla ____.

To Succeed in Manufacturing, Focus on Your People First
It’s not easy being a custom injection molder in the NYC metro area. For Natech Plastics, the key is developing employees’ skills and commitment.

This automotive A-pillar is molded of a PC/ABS or PC/ASA alloys, so its viscosity is relatively high to start with

How to Manage Pressure Loss in Injection Molding
Achieving a process window wide enough to ensure consistent part quality depends on achieving sufficient pressure at end of fill.

GW Plastics Queretaro toolroom

Filling a Precision Molding Niche in Mexico
Originally opened and dedicated by Mexican President Vicente Fox in 2006, GW Plastics has expanded the business and capabilities of its facility in Querétaro, adapting and evolving along with that country’s thriving injection molding market.

One of eight Arburg all-electric machines in a clean room at Plastikos.

Digital Manufacturing: Two Medical Molders Embrace Industry 4.0
‘Digitalization’ and ‘connectivity’ are loaded terms—shorthand for a whole new way of doing business. It can’t be accomplished in one go. But two Midwest molders in the sensitive medical field are already feeling the benefits of their initial steps in that direction.