Pouch & Bag Sealer
Temperature-controlled heat seal with auto-feed and bad-seal reject.
Continuous band sealer — Wikimedia Commons
Bag sealing is where most small food and powder lines lose product (poor seals leak; over-heated seals burn the print). A proper sealer holds temperature, pressure, and dwell time within tight limits, with a sensor on every seal. If the seal is bad, the bag is rejected before it leaves the machine.
Step by step
- 01
Pre-formed pouches are fed manually or by index conveyor into the carrier track.
- 02
Filling station (count / weight / volumetric) drops product into each pouch.
- 03
A pair of heated bars close on the bag mouth — controlled temperature, pressure, and dwell.
- 04
A cooling bar follows immediately to set the seal cleanly.
- 05
A thermal-imaging sensor (or contact thermocouple) verifies the seal temperature curve.
- 06
Bad seals trigger a reject; the good bag goes to the next station (date print, box).
What's in the cell
- Pouch carrier / track with grippers
- Heated seal bars with PID temperature control (typically 120 – 220 °C)
- Cooling bar (water or compressed-air cooled)
- Pressure regulator with feedback
- Seal verification sensor
- Reject station for bad seals
Where it fits
- Tea, coffee, and spice pouches
- Powder sachets (milk, drink mix, supplements)
- Vacuum food bags
- Pharma sachets
- Detergent / cleaning powder pouches
- Pet food single-serve packs
Sized to your line
These ranges cover most installations — exact spec depends on your product, throughput target, and integration constraints. We confirm everything before quoting.
Comes as standalone or integrated with a filler upstream. We tune the temperature / pressure / dwell triangle against your film and validate seal strength with pull tests on commissioning.
Want this on your line?
Send us a quick note about your product, current throughput, and where it hurts. We'll come back within 48 hours with a sized proposal and a site-visit plan.
Other factory stations
See all 10
Vision Sorting System
Line-scan camera with air-jet ejectors removes off-spec product in milliseconds.
Auto Labelling Machine
Servo-driven applicator wipes a label onto every passing unit, sensor-triggered.
Delta Robot Pick & Place
High-speed parallel-arm robot picks items from a conveyor and places into trays at 60–150 picks/min.
Filling & Counting Station
Counts units into bags or boxes (or fills by weight/volume) and auto-stops when the target is reached.