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Injection Moulding Machine Operator Jobs in Missouri

Semco

Union Machine Operator

Saint Louis, MO · On-site

$16.75 - $18.75/hr

Working closely with the Shift and People Supervisors as well as other Machine Operators, youll be operating various blow-molding and injection presses to create products for our customers. This job ...

Semco

Union Machine Operator

Saint Louis, MO · On-site

$16.75 - $18.75/hr

Working closely with the Shift and People Supervisors as well as other Machine Operators, you'll be operating various blow-molding and injection presses to create products for our customers. This job ...

Alpla

Injection Molding Process Technician

Kansas City, MO · On-site

$24.50 - $29.25/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Documents machine and sampling records * Maintains inventory list of resin, colorant, tools, etc ... Min 2 years' experience in Injection Molding * Experienced in either Toolmaking, Mechanic or ...

Career Search

Injection Molding Process Technician

Kansas City, MO

$24.50 - $29.25/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Setups, adjusts and optimizes injection molding process * Assists engineering with production tool ... Documents machine and sampling records * Maintains inventory list of resin, colorant, tools, etc

Advastar, Inc

Molding Technician

Kansas City, MO · On-site

$27 - $35/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... operating efficiency * Perform color and order changes, including all required line clearance ... Working knowledge of injection molding machines: operation, setup, and basic maintenance

Advastar, Inc

Molding Technician

Kansas City, MO

$27 - $35/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... operating efficiency * Perform color and order changes, including all required line clearance ... Working knowledge of injection molding machines: operation, setup, and basic maintenance

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Showing results 21-40

All JobsInjection Moulding Machine Operator JobsInjection Moulding Machine Operator Jobs in Missouri

Injection Moulding Machine Operator information

See Missouri salary details

$11

$17

$22

How much do injection moulding machine operator jobs pay per hour?

As of Aug 17, 2026, the average hourly pay for injection moulding machine operator in Missouri is $17.06, according to ZipRecruiter salary data. Most workers in this role earn between $15.34 and $18.27 per hour, depending on experience, location, and employer.

What is the difference between Injection Moulding Machine Operator vs Plastic Processing Technician?

AspectInjection Moulding Machine OperatorPlastic Processing Technician
CredentialsBasic technical training, on-the-job experienceTechnical diploma or certification often preferred
Work EnvironmentManufacturing plant, operating molding machinesManufacturing or processing plant, overseeing plastic production
Industry UsageCommonly used in plastics manufacturingUsed across plastics and polymer processing industries
Job FocusOperating and monitoring molding machinesMaintaining, troubleshooting, and optimizing plastic processing equipment

While both roles work within plastics manufacturing, the Injection Moulding Machine Operator primarily focuses on operating molding machines, whereas the Plastic Processing Technician handles broader processing tasks, including maintenance and troubleshooting of plastic production equipment.

What are popular job titles related to Injection Moulding Machine Operator jobs in Missouri?

For Injection Moulding Machine Operator jobs in Missouri, the most frequently searched job titles are:

What job categories do people searching Injection Moulding Machine Operator jobs in Missouri look for?

The top searched job categories for Injection Moulding Machine Operator jobs in Missouri are:

Injection Moulding Machine Operator jobs near you
Infographic showing various Injection Moulding Machine Operator job openings in Missouri as of August 2026, with employment types broken down into 48% Full Time, 48% Part Time, 3% Contract, and 1% Nights. Highlights an 99% Physical, and 1% Remote job distribution, with an average salary of $35,482 per year, or $17.1 per hour.

Molding Machine Operator

EnviroPAK Corporation

Earth City, MO • On-site

$19 - $22/hr

Full-time

Re-posted 24 days ago

Job description

Summary
We are seeking a skilled and detail-oriented individual to join our manufacturing team. The ideal candidate will be responsible for operating a type of molded pulp machinery, specifically a 1-face, 2-face, or 4-face rotary die mold machine in accordance with EnviroPAK quality specifications and customer requirements/expectations. This includes operation of a forming unit in a pulp molding machine, including steps like forming, wet pressing, transferring, and drying
This role requires ensuring high-quality production and maintaining safety standards within a fast-paced manufacturing facility. Technical proficiency with mechanical knowledge, and the ability to interpret technical drawings. They will play a vital role in the fabrication and assembly processes, supporting overall production efficiency and quality assurance.
Responsibilities
Schedule: Friday - Saturday - Sunday; 6am -6PM
• Set up molded pulp machinery to run at the proper speed to ensure the product adheres to the quality specifications and safety guidelines.
• Perform routine maintenance on schedule and in accordance with procedure to ensure machine stability and dependability.
• Perform necessary adjustments per tool change in accordance with the procedure to minimize downtime and maintenance calls.
• Monitor the molding process to maintain high quality of the molded pulp product.
• Understand machine capabilities, achieving optimum molded pulp product quality.
• Track and record data regarding wet weight/dry weight/bone dry weight to ensure part will meet the designated customer quality specifications.
• Evaluates the production process to ensure predictable inputs that will lead to a quality molded pulp packaging part.
• Inform Plant Manager of any non-conformance, equipment failures, raw material issues and or safety issues.
• Must have experience operating complex machinery and a desire to learn our operating process and grow with our new operation.
• Communicate with the Quality Leads to ensure that the customer product is being produced within specifications.
• Maintain a clean machine and work environment.
Skills
  • High school education, GED equivalent or advanced technical school training.
  • 1-3 years' experience running manufacturing machinery.
  • Read and interpret work instructions, safety guidelines, and other work-related material.
  • Basic Mathematical skills for measurements and calculations.
  • Strong mechanical aptitude.
  • Must be able to lift up to 40 pounds.
  • Physical stamina while working on your feet in a non-climate-controlled environment.
  • Be able to use simple machinery for moving materials.
  • Be able to work in a loud manufacturing environment.

• Experience in factory settings involving machining, assembly line work, packaging, or fabrication is preferred.
• Ability to work independently or as part of a team in a fast-paced factory environment while maintaining attention to detail and safety standards.
• Familiarity with quality control processes in a manufacturing environment.
• Ability to use precision measuring instruments effectively.

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