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Lean Glass
Forming & IS machine

Plunger

On press-and-blow, the plunger presses the gob to form the parison. Plunger setup is the highest-leverage variable in PB and NNPB processes.

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This term appears across our hot-end audits, forming audits and Job Change Tool work. If you would like to discuss how it shows up in your plant, book a call — every engagement begins with an operational diagnostic, not a sales pitch.

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Related terms

Read next.

Plunger mechanism
The actuator system driving plunger motion (servo or pneumatic). Controls press timing, profile and position.
NNPB
Narrow Neck Press and Blow — a forming process using a plunger to form the parison; standard for lightweight beverage containers (returnable beer, lightweight wine).

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