Linear weigh fillers
Good for moderate outputs, multiple products and controlled dry product dosing.
View routeNet weigh route
Net weigh fillers and weigh hopper systems
Compare net weigh filling systems for dry products before choosing a bag, pouch, jar or tub filling route.
Planning the right weigh filling route
A net weigh filler weighs product before discharge into the pack. This can help improve cycle control because the next dose can be prepared while the filled pack is moved away or closed.
Net weigh routes are often used for granules, seeds, small parts, pet food, coffee and many dry ingredients. They may be configured with vibratory trays, belt feeders, weigh buckets or multi-hopper arrangements.
The suitability of a net weigh filler depends on product flow, target weight, fill opening size, headroom and whether the line is operator fed or fully automatic.
Key buying checks
- Confirm whether weighing happens before or inside the pack.
- Check discharge opening against the pack mouth.
- Review product drop height for fragile goods.
- Allow for feeding and refill time between cycles.
Routes to compare
Machine options to shortlist.
Net weigh systems can suit many dry products where a prepared weighed dose is discharged into the pack.
Multihead weighers
Useful where speed, accuracy and product combination are central to the project.
View routeAuger fillers
Often compared for powders, fine ingredients and products that need screw dosing.
View routeVFFS weigh lines
For automatic bag forming, weighing, filling and sealing from film reels.
View routeRelated searches
Useful pages for the same project.
These pages help narrow the specification by product, pack format and machine type.
How to choose a weigh filler
A practical guide to comparing machine type, pack handling, output and tolerance.
Read moreLinear vs multihead vs auger
Compare the main weighing and dosing routes for dry products.
Read moreWeigh filler enquiry checklist
Prepare the information needed before requesting a machine recommendation.
Read moreFAQ
Questions before choosing a weigh filler.
Short answers for production teams comparing dry-product weighing and filling routes.
What information is needed for net weigh fillers and weigh hopper systems?
Useful details include the product name, bulk density if known, target fill weight, acceptable tolerance, pack format, output per minute or hour and whether the line must connect to feeding, sealing, capping, labelling or checkweighing equipment.
Which machine type is normally compared for net weigh fillers and weigh hopper systems?
Linear weighers, multihead weighers and auger fillers may all be considered depending on product flow, dose size and output target.
Can Lancing help with a complete line rather than a standalone filler?
Yes. Many projects involve product feed, weighing, filling, pack handling, sealing or closing and downstream checking. Sending the full pack route helps avoid choosing a filler that later becomes difficult to integrate.
Send the product, target weight, pack format and output target.
Lancing can advise whether a linear weigher, multihead weigher, auger filler, VFFS line or integrated route is the practical starting point.
Verify the weighed dose reaches the finished pack
A net-weigh system measures product before it is released into the bag or container. The receiving pack still needs to capture the entire discharge. Product retained on a hopper surface, delayed in a chute or spilled around a narrow opening can create a difference between the weigher’s result and the final pack contents.
During the trial, compare identified weigh cycles with the packs they produce. Observe whether the hopper clears completely and whether the next dose waits for a ready, correctly positioned pack. Include the product condition that is most likely to stick, the smallest pack opening and the normal downstream cycle. For fragile products, check damage through the discharge path as well as final quantity; reducing a drop or changing a chute may alter both product quality and the achievable rate.
Ask the quotation to define where dose acceptance ends and finished-pack verification begins. A downstream checkweigher can identify quantity problems in completed packs, but it does not by itself explain whether a loss occurred during weighing, transfer or closing. Keep the cycle and pack records linked during acceptance. This helps compare complete net-weigh filling arrangements, including hopper discharge, pack presentation and inspection, rather than relying only on the scale display.
Can a correct net-weigher reading still produce a light pack?
Yes. Product may remain in the hopper or chute, spill, or fail to enter the pack completely. Verify the finished pack as well as the pre-discharge dose.
What should a net-weigh filler trial show at the discharge point?
It should show complete product release into the intended pack, coordinated with pack readiness, at the agreed rate and product condition.