Fragile and coated pieces
Use controlled feeder amplitude, suitable contact surfaces and the shortest practical drop. Record breakage or coating loss before and after the trial.
Product quality
Protect the product through distribution, weighing and discharge.
A multihead weigher cannot compensate for poor bulk feeding or excessive drop height elsewhere in the line. Product quality should be checked from the first infeed point to the finished bag or pouch, including collisions, long drops and product trapped in the seal area.
Oily or adhesive products
Product may stick to smooth surfaces or build up over time. Dimpled or alternative finishes can help in some applications, but the real product must be tested.
Bulky low-density products
Large pieces may fill hopper volume before reaching the target weight. Hopper, chute and pack-opening dimensions therefore matter as much as the target weight.
Line design
Coordinate portion calculation with the pack cycle.
The combination weigher selects available portions to meet the target, but the timing hopper and packing machine decide when the combined dose can leave. A VFFS line needs a confirmed bagger-ready state; a pre-made pouch line needs the pouch present and open before discharge.
| Product issue | Design response to assess | Trial observation |
|---|---|---|
| Breakage | Reduced drops, controlled vibration, gentle hopper operation | Before-and-after sample inspection |
| Sticking | Surface finish, feeder angle, cleaning frequency | Build-up during a sustained run |
| Large pieces | Hopper and chute volume, outlet size, staggered or multiple discharge if supported | Blockage, settling and pack opening clearance |
| Seasoning or crumbs | Dust containment, cleanable contact path, seal-zone protection | Retained fines and finished seal quality |
Allergen and product changeover
Where products contain different allergens or coatings, define the cleaning release standard and the order in which products will run. The machine layout must allow the agreed cleaning method and inspection of product-contact areas.
Acceptance run
Measure weight data and output while also recording product damage, crumbs, coating loss, spills, seal contamination, rejects and restarts. A fast short run is not enough if product build-up develops over time.
Prepare the enquiry
Send representative product and the real bag or pouch format.
Include the product size range, fragility, oil or seasoning, target weights, pack opening, required output and any cleaning or allergen controls. The trial and FAT guide can be used to define the evidence required.
Product trial
Prove weight control and product quality together.
Lancing can review the product and packing format and identify the configuration and trial checks needed before a final recommendation.
Request a product reviewBuyer questions
Frequently asked questions about this application.
Are multihead weighers suitable for crisps and snacks?
They are commonly considered for free-flowing snack products, but hopper volume, product fragility, surface finish and drop height must be confirmed with the real product.
What are dimpled surfaces used for?
Dimpled surfaces may help some sticky or oily products release more consistently. Suitability depends on the product and cleaning method.
How is product damage assessed?
Compare representative samples before and after the machine path and agree acceptable breakage, coating loss or crumbs before the trial.
Can one weigher feed both VFFS and pouch machinery?
A weigher can be configured for different downstream machines where the mechanical outlet, timing hopper and controls interface are designed for the selected packer.
Related guidance
All guidesContinue through the relevant machine and buyer resources.
Decide whether mixed snacks need total-weight or ingredient control
A mixed snack or pet-food pack can be specified by total weight, ingredient proportions, or both. A conventional combination weigher receiving an existing blend normally selects portions to reach a combined weight; it should not be assumed to verify the amount of every ingredient inside that blend. If the pack requires controlled quantities of separate components, ask about a configuration designed for mix weighing.
Prepare the required ingredients and state whether each has a target weight, an acceptable proportion range or only a presence requirement. Include differences in piece size, fragility, oiliness and flow. A specialist mix arrangement may use separate feed streams and dedicated portions of the weighing system, which changes the machinery layout and how capacity is assessed. Confirm what the offered machine can measure and control rather than inferring it from head count.
During the product trial, evaluate the whole pack and each required component against the agreed criteria. Record the effect of one ingredient feeding more slowly or running low. Also compare changeover and cleaning effort across the proposed streams. This makes the trade-off between a premixed product and separately controlled ingredients visible before selecting a weigher, and avoids a correct overall weight masking an unacceptable customer-facing mix.
Does a standard multihead weigher control every ingredient in a premixed snack?
Not automatically. Total-weight combination and ingredient-ratio control are different requirements; confirm the specific configuration.
What information is needed for a mixed-product weighing enquiry?
List the ingredients, component targets or proportion limits, total pack weight and each ingredient’s handling behaviour, alongside the required output.
Understand head-count selection Plan mixed-product acceptance