Plastic jar capping

Screw capping machine for plastic jars

Plastic jars and wide-mouth containers require careful closure and handling checks. The right route may differ from a standard bottle screw capper.

Jar diameter, shoulder design and rigidity affect how the pack can be held.

Wide closures need clean starting before tightening to avoid cross-threading.

Food, cosmetics and chemical jar projects may favour flexibility over maximum speed.

Shortlist route

Which route is most likely to fit?

Use these checks to decide whether the project is a semi-automatic, compact or automatic inline capping route.

Project signal	Likely route	Why it matters
Short jar runs	Semi-automatic cap tightening	Improves repeatability without a full automatic line.
Repeat jar format	Dedicated capper setup	Allows more stable handling and faster setup.
Multiple lid sizes	Changeover-focused route	Ensures each format remains practical in production.

Related routes

Spindle capping machinesCompare automatic inline spindle capper routes for repeatable screw-cap tightening.

Screw capping machines UKShortlist semi-automatic, compact and inline screw capping equipment.

Cap feeding systemsReview cap elevators, bowl feeders, chutes and manual placement options.

Trigger capping machinesPlan around trigger sprayers, dip tubes, bottle guides and closure orientation.

Pump capping machinesCompare pump closure handling for cosmetics, lotions and personal care bottles.

Ask for a quoteSend bottle, cap and target output so the route can be checked properly.

FAQ

Not always. Jar diameter and lid style can require a different route.

Poor thread start, container instability and closure variation are common issues.

Send jars, lids, filled samples if possible and the expected size range.

Ready to shortlist?

Lancing UK will help identify whether you need a semi-automatic capper, compact capper, inline spindle capper or specialist cap feeding route.