Start with closure mechanics
Confirm whether the cap is tightened, formed, pressed, placed or fed. That decision normally dictates the head style and bottle handling.
Closure technology comparison
Choose the capping route before the machine.
Compare the closure behaviour, bottle support and feeding route before requesting a capping machine quote.
Parent hub guidance
Different closures need different application methods.
A capping machine is only correct when the closure, bottle and production context all fit the same route. This page keeps the comparison broad so the site does not duplicate specialist screw, spindle, trigger, pump or ROPP domains.
| Route | Typical closure behaviour | Selection risks | Specialist next step |
|---|---|---|---|
| Screw capping | Rotary tightening of threaded caps. | Cross-threading, low torque, over-tightening, bottle slip or cap skew. | Screw capping overview |
| ROPP capping | Roll-on pilfer-proof forming on suitable aluminium caps and bottle necks. | Wrong neck finish, poor pilfer-band formation or unsuitable head tooling. | ROPP capping overview |
| Pump capping | Rotary tightening or placement of dispenser closures, often with dip tubes. | Dip tube control, cap presentation and bottle stability. | Pump capping overview |
| Trigger capping | Handling of longer, asymmetric trigger heads. | Orientation, head clearance, feed track geometry and grip during tightening. | Trigger capping overview |
| Press-on capping | Controlled seating of non-threaded closures. | Bottle collapse, incomplete seating or damage to closure features. | Press-on capping overview |
| Cap feeding | Automatic orientation and delivery of caps to the capping point. | Cap nesting, static, orientation failure or poor integration with conveyors. | Cap feeding systems |
How to decide
Use samples to remove uncertainty.
Check the bottle under load
Lightweight or flexible bottles may move, collapse or turn during capping unless guides, grippers or handling are correct.
Confirm the quality method
Define the accepted result: torque, leak performance, tamper-band formation, cap height, visual alignment or seated closure position.
FAQ
Closure comparison questions
Is a screw capper suitable for pumps and triggers?
Sometimes, but pumps and triggers usually need extra attention to presentation, dip tubes, head clearance and bottle stability.
Is ROPP the same as screw capping?
No. ROPP uses roll-on pilfer-proof forming on suitable aluminium closures and bottle necks; screw capping tightens a threaded cap.
When should cap feeding be specified?
Cap feeding should be considered when manual placement limits output, consistency or operator workload, or when the cap must be orientated before application.
Can the same line handle several cap types?
It may be possible, but change parts, cap feeding, torque range, bottle guides and changeover time need to be checked from samples.
What should be sent before quoting?
Send bottle and cap photos, dimensions, samples if available, target output, current line layout and any quality acceptance method.