Forming & IS machine
Gob
A controlled drop of molten glass cut from the gathering and delivered to the IS machine for forming. Gob weight, temperature uniformity and shape are the foundational inputs to forming quality.
How Lean Glass works with this
In an audit or engagement.
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.
Related terms
Read next.
Gob delivery system
The mechanical system that transports gobs from the gathering to the blank moulds — distributor, scoops, troughs, deflectors and funnels in alignment.
Gob weight
Mass of an individual gob, controlled by orifice ring and shear timing. Variance in gob weight propagates directly to wall-thickness variance in the final container.
Gob temperature
Temperature of the gob at delivery to the blank mould — typically 1080–1180 °C depending on glass colour and process. Variance ±5°C is acceptable; ±10°C+ degrades pack rate.
30-minute call with a senior practitioner.
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