Reference
Glossary of Packaging Terms
The words the packaging trade uses, in plain English.
Neck finish: the threaded or lugged opening dimension, written as diameter/thread style, such as 28/410. Continuous thread (CT) closures screw on; lug closures engage in a short twist. Headspace is the empty volume left under the closure — critical for hot fill and for freezing. Liner is the disc inside a closure that actually seals against the container land.
Other terms you will hear: parison (the plastic preform before blow moulding), annealing (controlled cooling of glass to relieve stress), tamper-evident band, induction seal, shrink band, and decoration methods such as silk screen, pad print, and label application.
- Neck finish · headspace · liner
- CT vs lug closures
- Tamper-evident and induction seals
- Silk screen · pad print · labels
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