Many paste filling problems are not caused by the main machine but by the wrong nozzle style, filling speed or product cut-off arrangement.
Many paste filling problems are not caused by the main machine but by the wrong nozzle style, filling speed or product cut-off arrangement. The best result normally comes from matching the product path, hopper feed, nozzle design, container handling and downstream line equipment before ordering the machine.
This page is for manufacturers and contract packers filling sauces, creams, gels, honey, adhesives and stringy products into containers where neck finish or shoulder contamination must be reduced. It helps identify the practical specification points that affect accuracy, mess, speed and changeover.
For many paste applications, the route is selected after reviewing viscosity, particle content, temperature, dose size, product contact requirements and expected production output.
Where production is moving beyond hand filling, the filler should be planned with container infeed, capping, labelling, coding and packing so the line runs cleanly from the start.
Clear product and pack information helps shortlist the right paste filler and avoid over-specifying or under-specifying the machine.
Photos of the product, container, closure and any existing filling setup are also useful when planning the route.
Use the related pages below to compare product type, automation level and line integration before requesting a quote.
Return to the main application route and compare similar paste filling projects.
View related machinery →Review viscosity, fill volume, container, output and cleaning points before choosing a machine.
Read guide →Send the product, fill volume, container and output target for a practical paste filler recommendation.
Send enquiry →The suitable route depends on viscosity, particle content, fill volume, container opening and output target. Many sauces, creams, gels, honey, adhesives and stringy products applications start with nozzle, valve and fill-speed setup matched to product behaviour.
Useful details include product samples or specification, fill volume, container dimensions, closure type, target output, cleaning requirements and whether you need filling only or a wider line.
Yes. Paste filling can be supplied as a stand-alone machine or planned with conveyors, capping, labelling, coding and accumulation depending on the required production flow.
Send your product, container, fill volume, closure and target output. Lancing can help compare the practical options before quotation.
An anti-drip label does not guarantee clean cut-off. The nozzle must suit the product’s viscosity, elasticity, particles and pressure, and it must work with the actual neck opening and delay between containers.
A closing tip can stop flow near the outlet and reduce the column of product left to drip. Check whether the mechanism leaves enough passage for particles and whether seals are compatible with the product and cleaning method.
Suck-back can draw a controlled amount of product away from the tip after filling. It may help with tails or strings, but excessive movement can introduce air, pull product from the container or affect the next dose.
The bore must fit the container opening while allowing the largest credible particles to pass. Larger bores can improve flow but may increase splash or reduce positioning tolerance.
Moving the nozzle into the container can reduce splash or control the deposit position. It adds cycle time and mechanical complexity, so it should solve a demonstrated fill problem.
| Observed defect | Possible causes | Trial change to isolate the cause |
|---|---|---|
| Single drop after closure | Residual product at the tip, pressure or slow valve closure. | Compare nozzle closure timing, product pressure and tip geometry. |
| Long string | Elastic product, high viscosity, separation speed or insufficient cut-off. | Test shut-off, suck-back, nozzle height and container movement. |
| Wet neck or rim | Nozzle position, splash, oversized jet or container misalignment. | Use production packs and adjust bore, height and fill profile. |
| Blocked nozzle | Particles, cooling product, restricted passage or product skinning. | Test largest particles and minimum normal temperature. |
For broader nozzle principles outside paste filling, see Lancing filling machine nozzles. This page remains focused on thick and stringing products.
No. Product pressure, viscosity, temperature, particles, valve timing and container movement all affect the result. The complete fill cycle must be tested.
Shut-off closes the product path, while suck-back retracts a small quantity away from the tip. They can be used separately or together depending on the product.
It can if the setting is excessive or inconsistent. The next fill and the product remaining in the nozzle should be included in the dose test.
Compare the largest particle and its shape with the complete minimum passage, not only the visible outlet. Include valves and connectors in the review.
It may help place product deeper in a container or reduce splash, but it is not required for every paste and can reduce speed. Use it for a defined problem.
Send a close-up video at normal product temperature, the container opening, the time between fills and details of the current nozzle or valve.
A nozzle can close mechanically and still leave a tail, reopen or push residual product into the pack. Diagnosis should include product pressure, nozzle position, dwell time and the condition after a production stop.
Residual pressure, elastic product behaviour, a leaking seal, valve movement or product trapped around the closure can force the nozzle open or release a delayed drop. Observe the nozzle after the machine has stopped, then isolate whether pressure comes from the pump, cylinder, hose or product column.
A long free strand gives cohesive product more opportunity to stretch and sweep across the rim as the container moves. Reducing the gap, changing the withdrawal timing or using a controlled diving motion can improve presentation, provided the nozzle remains safely aligned and does not touch the pack or filled product unexpectedly.
Product can cool, settle, skin, drain or build pressure during a pause. The first restart fill may therefore behave differently from steady running. Include a realistic stop and restart in the trial and inspect both the nozzle and the first packs before declaring the cut-off suitable.
If feed or discharge pressure remains above what the closure can contain, product may seep, distort seals or release when the nozzle opens. Control pressure at its source and coordinate pump, cylinder and valve timing. A stronger nozzle alone may move the problem elsewhere in the product path.
Use the nozzle selection guide and the container-neck contamination guide to test the whole fill presentation.
Send a close video of steady running and a stop/restart, together with the product temperature, nozzle, container opening and feed arrangement.
