Flat, supported transfer
Close-coupled belts and suitable surface grip help prevent leading edges dipping into gaps or packs rotating as they enter the weigh conveyor.
Flexible-pack inspection
Pouch and sachet checkweighers that control light, flexible products
Flexible packs can curl, bounce, overlap and change shape as they move. We configure belt speed, transfer geometry, product spacing and rejection around the real pouch or sachet so weight results remain repeatable at production speed.
01Low-profile belt transfers
02Light-pack reject control
03Single- or multi-lane concepts
System design
Reliable readings start with reliable product presentation
Flexible packs must be flattened, separated and transferred without curl, bounce or overlap obscuring the dynamic weight result.
Product separation
Acceleration belts, metering or upstream coordination can create the clear pitch required for one-pack-at-a-time measurement.
Fast reject response
Air blast, drop-flap and compact diverter options are assessed against pack mass, seal integrity, speed and the required collection method.
Bagmaker communication
Weight trends and fault signals can be exchanged with compatible VFFS, HFFS or pouch-filling equipment to support line control.
Specification
Flexible-pack details that affect accuracy
- Filled shape, seal profile and whether product can migrate in the pack
- Minimum and maximum pack dimensions and weight
- Pack orientation and presentation from the upstream machine
- Static, drafts, vibration and belt-surface requirements
- Number of lanes and whether streams must be combined
- Reject trajectory and collection without pack damage
- Required feedback to the depositor, auger or bagmaker
Line integration
Coordinate the checkweigher with the packaging machine
A pouch line is most stable when product pitch is established before the weigh conveyor and both machines share run, ready and fault states. Where filling feedback is appropriate, filtered trend data can help correct gradual drift without chasing the normal pack-to-pack variation of powders, granules or liquids.
Typical applications
Powder sachetsSnack and confectionery bagsSauce pouchesMedical sachetsPet-food pouchesFlow-wrapped packs
Application-led engineeringPack handling · Weighing · Rejection · Data
Oxford Vision Systems
Combine weight with barcode, label and product verification
Weight inspection can be coordinated with seal, label, code or visible-pack checks when presentation remains suitable for both weighing and image capture.
Discuss integrated inspectionFrequently asked questions
Questions about pouches & sachets
These answers cover light-pack performance, overlap, format changes, multi-lane layouts and feedback to compatible filling equipment.
Can very light sachets be checkweighed?
Yes, within the performance envelope of the selected system. Drafts, vibration, belt condition and product pitch become increasingly important as target weight falls.
Can overlapping pouches be separated?
Spacing belts or upstream timing changes may separate packs, but the best method depends on how products leave the bagger or sealer. A line video is useful for early assessment.
Can one machine inspect several pouch sizes?
Usually, if the formats remain inside the conveyor, weight and reject envelope. Each format can use a dedicated recipe.
Can the system feed results back to an auger filler?
Yes, provided the filler supports an appropriate correction input and the process is suitable for averaged feedback.
Continue your research
Related checkweighing systems
Close the control loop
Filler feedback
Turn downstream weight measurements into controlled adjustments at the filler. Rather than reacting to one pack, feedback logic evaluates a defined sample and applies bounded corrections when a genuine process trend is established.
Explore system
Turn weights into evidence
Production data
Make weight inspection information useful beyond the machine HMI. From simple batch reports to line-level data exchange, we define the records, identifiers, retention and interfaces your production and quality teams actually need.
Explore system
Dynamic weight inspection
In-line checkweighers
Inspect correctly presented packs at the agreed production rate, classify them against defined limits and remove non-conforming items with an application-matched reject system. We configure the weighing conveyor, controls, reject method and data outputs as one practical system.
Explore systemPlan the complete inspection point
Related checkweigher decisions
Use the next guide that matches the engineering or quality question behind your project.
Your application, properly defined
Let’s specify the checkweigher your line needs.
Share pack details, target weights, line speed and any inspection or data requirements.