Plastic injection mold maker | Injection molder | Chicago | Illinois Full Service Injection Molding with over 70 years of experience running multi-cavity, 24-hour plastic injection molding facilities, Janler has the necessary expertise to handle your molding projects. Full Service Injection Molding with over 70 years of experience running multi-cavity, 24-hour plastic injection molding facilities, Janler has the necessary expertise to handle your molding projects.