Spindle capping machines
Compare the main automatic, compact and semi-automatic capping routes.
Cap presentation
How do you set a cap chute for pre-threading?
Control the cap before the spindle wheels are asked to tighten it.
Direct answer
How do you set a cap chute for pre-threading?
A cap chute for pre-threading should present the cap squarely to the bottle neck, keep enough control to prevent bounce or tilt, and allow the thread to start before final spindle tightening. Chute position, cap release timing, bottle pitch and neck finish all affect whether the cap starts correctly.
Cap-chute setting points
- Check the cap leaves the feed route in the same orientation each time.
- Confirm the bottle neck arrives centrally under the cap handover point.
- Use slow-speed observations before assessing full-line output.
- Record where the cap first contacts the thread.
- Reject or stop on repeat tilt rather than forcing mis-presented caps through the spindle wheels.
Related guidance
Continue the specification
FAT checklist
Plan evidence for sample testing, acceptance and handover.
Ask Lancing to review the pack
Send bottle, cap, samples, target output and any known fault evidence.
Create a repeatable reference for the handover
Ask the machine supplier to define the approved chute and release setup for the exact cap and bottle. Keep that record with labelled samples and a clear view of the handover. Avoid treating an adjustment used on a similar cap as a confirmed setting for a new closure.
If a fault appears, record whether the cap leaves the chute incorrectly, meets the neck incorrectly or changes position later. Use observations made through the normal permitted operating method. Distinguishing these stages makes a support enquiry more useful than reporting only cross-threaded finished bottles.
- Material change
- Compare current cap and bottle references with the versions used for the approved setup before changing the machine.
- Acceptance point
- Ask how a correctly started closure is identified before final tightening and what the proposed system does with an unacceptable presentation.
Should the spindle wheels be adjusted to compensate for an unreliable handover?
Request a review of the presentation and thread-start sequence first. Use the supplier-approved setup and fault procedure, and record the evidence needed to confirm the incoming cap condition before reassessing final tightening.