via Glassdoor
$37K - 46K a year
Set up, operate, monitor, and troubleshoot injection and blow molding machines to produce quality plastic parts and maintain production efficiency.
2-5 years experience with injection and blow molding machines, mechanical aptitude, knowledge of plastics processing, quality control skills, and ability to work physical shifts.
Crown Staffing is currently seeking experienced Injection Molding Machine Operators to fill openings with a local Manufacturing company in Kansas City, MO. Job Summary: We are seeking a skilled and detail-oriented Plastic Injection and Blow Molding Machine Operator with hands-on experience in HDPE processing, 2-step stretch blow molding, and injection molding. The ideal candidate will be responsible for setting up, operating, monitoring, and troubleshooting plastic molding machines to produce high-quality plastic parts and containers according to specifications. Key Responsibilities: ● Set up and operate injection molding and blow molding machines, including two- step stretch blow molding equipment. ● Load raw materials (e.g., HDPE preforms) into hoppers and ensure uninterrupted machine operation. ● Adjust machine settings such as temperature, pressure, and cycle times for optimal production efficiency and product quality. ● Perform mold changes, machine start-up, and shut-down procedures. ● Conduct quality inspections on finished products for dimensions, appearance, and functional integrity. ● Monitor equipment for signs of wear, malfunction, or misalignment and perform basic maintenance or repairs. ● Maintain accurate production records, including downtime, scrap, and material usage. ● Comply with safety standards, Good Manufacturing Practices (GMP), and company SOPs. ● Assist with troubleshooting molding issues such as flash, short shots, warping, or bottle defects (e.g., ovality, stress cracks). ● Work with engineering and quality teams to optimize production processes and implement continuous improvements. ● Keep work area clean and organized in accordance with 5S practices. Qualifications & Skills: ● 2–5 years of hands-on experience operating HDPE blow molding machines, 2-step stretch blow molding (SBM) systems (such as Nissei ASB, Sidel, or similar), and injection molding machines (e.g., Engel, Husky). ● Strong mechanical aptitude and ability to troubleshoot and resolve machine issues. ● Understanding of plastics processing, particularly HDPE, PET, and PP. ● Familiarity with quality control procedures and tools (calipers, gauges, etc.). ● Ability to read and interpret technical drawings, production orders, and safety documentation. Physical Requirements: ● Ability to stand for extended periods, lift up to 50 lbs, and work in a manufacturing environment with moderate noise and heat. ● Willingness to work rotating shifts, weekends, or overtime as required. Preferred Experience: ● Experience with 2-step SBM machines (preform reheating and stretch-blow processes). ● Working knowledge of mold setup, robotic part removal, and automation systems. ● Preventive maintenance experience or minor repair skills. ● Bilingual (English/Spanish) is a plus in some facilities. Note: This job description is intended to provide a general overview of the position. Duties and responsibilities may vary depending on the specific needs of the company. About Crown Staffing Crown Staffing is a staffing and recruiting company that unites character-driven people and companies so they can build rewarding careers and strong organizations together. In 2024, we employed over 29,000 professionals in industrial, manufacturing, administrative and healthcare jobs countrywide. Our relationships with top employers mean you’ll learn about positions you won’t find anywhere else. Discover the opportunity for meaningful work and a dynamic career when you work with Crown Staffing! The Next Steps Thank you for your interest in our Injection Molding Machine Operator position! After applying, a member of the Crown Staffing team will contact you shortly. Have any questions? Shoot us a text or give us a call at (270) 889-9555! We’re happy to answer any questions you may have. Crown Staffing is an Equal Opportunity Employer M/F/D. INDGL Job Type: Full-time Pay: $18.00 - $22.00 per hour Benefits: • Dental insurance • Health insurance • Vision insurance Work Location: In person
This job posting was last updated on 12/9/2025