Blow Mold Operator

Stretch molten plastic with bursts of air to create bottles and more.
picture of Blow Mold Operator

Quick Stats


Salary Range
$19,000 – $45,000

Data from U.S. Department of Labor


What do Blow Mold Operators do?

If you clicked on this job title, you have probably considered a job in manufacturing. You might have wondered how the plastic is formed in hollow products, such as water bottles and flashlight casings. If so, then the job of a Blow Mold Operator might interest you.

Blow mold equipment forces compressed air into plastic. At the proper temperature and pressure, that air forces the plastic into a specific shape. Similar to glass blowing, the job of a Blow Mold Operator requires an understanding of the characteristics of plastic, including how far it will stretch, how heat affects the process, and what flow rate produces the best results.

With this knowledge, as a Blow Mold Operator you take control of the machine. You constantly monitor the pressure gauges, watch for uneven heating, and focus on creating a row of uniform products. You operate the valves that control the temperature, flow, and air pressure. When the product is complete, you use saws or files to trim excess and rough spots.

Creating a series of products with the same specifications requires focus and patience. To ensure that all products are consistent, you weigh and measure them when they’re done.

In addition to molding the plastic, you’re also responsible for setting up, maintaining, and doing basic repairs on the machine. In a fast-paced manufacturing plant, that means keeping up with the recommended maintenance schedule to avoid machinery malfunctions that could result in a production shutdown.


Should I be a Blow Mold Operator?

You should have a high school degree or higher and share these traits:
  • Independent: You enjoy flying solo and doing things your own way.
  • Reliable: You can always be counted on to do a good job.
  • Team Player: You're able to listen, communicate, and work with tons of different people.

  • Also known as: Core-Blower Operator, Mold-Car Operator, Shell Molding Roller Blast Operator

    How to become a Blow Mold Operator

    Blow Mold Operators often have a Certificate or higher. Chart?chd=s:9kaaaa&chl=no+college+%2886%25%29|certificate+%2814%25%29||||&cht=p3&chs=466x180&chxr=0,86,86
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