THE DECISION IN BRIEF
Tubes bend during automatic insertion. Should we order stiffer tubes?
Compare incoming tube condition with the insertion path and guidance. Review alignment and handling before changing stiffness, then verify the revised assembly’s function.
Locate when the bend appears
Inspect incoming assemblies and samples immediately before insertion. Observe the neck entry, bottle positioning, and tube path through the operation. Preserve bent specimens with their line position and component lot. A tube that arrives curved requires a different action from one damaged by a misaligned insertion.
Compare manual insertion under the supplier’s guidance with the automatic operation. A passing manual example does not prove the line setup is correct, but it can help narrow the cause. Keep the bottle and tube configuration the same for the comparison.
Use staged observations
O.Berk’s cut-to-size tube listings illustrate that tube geometry belongs in the supplied specification. Request the relevant material, length, and end configuration for the investigation.
| Stage | What to inspect |
|---|---|
| Unopened supply | Starting straightness and damage |
| Pre-insertion handling | Tube direction and compression |
| Neck entry | Alignment and catching |
| Installed pack | Final tube position and dispensing |
Evaluate stiffness as a tradeoff
A stiffer tube may enter differently, but it can also change handling or installed position. Ask the supplier to explain the proposed material revision and assess formula contact where relevant. Do not accept a new tube because it survives a single hand demonstration.
If the cause is equipment guidance, document the adjustment and verify it across representative bottles. If variation in bottle position or finish drives the snag, involve the bottle supplier and filler. Avoid an undocumented operator technique that works only while the engineer watches.
After correction, assess installation consistency, tube damage, low-fill dispensing, and residual product. Keep the final tube and line settings together in the release record. Review future changes to bottle height, neck access, tube packing, or component feeding. A stable production method needs both an appropriate component and a repeatable route into the bottle, rather than a material change used to compensate for unresolved alignment.
Sources & further reading
Use the references below alongside the selected component drawing and agreed sample plan. Product-specific claims need product-specific evidence.
PRODUCT REFERENCES
Components to discuss with your supplier.
These references share the component type discussed here. Confirm the selected assembly and application with samples.
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