Empty Pouch, Double Film, Misalignment: The Three Defects Huanghai MJ180 Film Vision Inspection Catches
Cutting and vision inspection station on the Huanghai MJ180: films lie on the packaging film and are checked pouch by pouch before heat sealing.
Key Takeaways
- Film vision inspection checks before heat sealing, while every film is still fully visible.
- Every pouch is checked: is there a film, is there only one, and is it placed straight?
- A defect does not stop the line. The system logs it and the reject unit removes it automatically.
One oral thin film is one dose. If a pouch has no film, the patient misses that dose. If two films are stacked in one pouch, the patient takes a double dose. If the film is off-center, what gets sealed is not one clean, whole film. All three problems can occur during cutting and packaging.
Manual spot checks cannot keep up. The Huanghai MJ180 ODF cutting and packaging machine runs at about 11,900 films per hour on Gen I and about 30,000 on Gen II, and at that speed only a machine can look at every pouch. That is why the MJ180 has film vision inspection, checking every pouch in line.
Inspecting Before Heat Sealing
On the MJ180, the film is peeled from its base liner, slit and laid onto the composite packaging film before it is heat-sealed. Film vision inspection sits at exactly this point: the film is already in its pouch position but not yet sealed in, so the camera can clearly see whether each film is there, how many there are and where each one lies.
Three Defects, Three Consequences
- Empty pouch: No film in the pouch position. If it ships, the patient opens an empty pouch and misses that dose.
- Double film: Two films overlap in one pouch position. If it ships, that pouch delivers a double dose, which is a serious safety issue for a medicine.
- Misalignment: The film is not centered in its pouch position. If it is far enough off, the seal and the die-cut can catch the film, affecting both the look of the finished pouch and the seal. Keeping films in position starts with web guiding: see why film webs need guiding before cutting.
Film vision inspection judges all three, pouch by pouch.
After Detection: Log It, Reject It on Time
When vision inspection finds a problem, the MJ180 does not need to stop. The system logs that pouch, calculates from the web speed when it will reach the reject outlet, and the reject unit removes it automatically at that moment. Good pouches pass through as normal into collection and on to cartoning. The line keeps running and defective pouches never mix with good ones. See how the MJ180 finds, tracks and rejects every defective pouch.
Working Alongside Code Vision Inspection
Film vision inspection checks the medicine: is the film in each pouch right? Code vision inspection checks the code: are the batch number, expiry date and unique identifier on each pouch printed correctly? Problems logged by both vision stations are removed at the end by the same reject unit.
Frequently Asked Questions
What does film vision inspection check for?
Empty pouches, double films (two films in one pouch position) and misaligned films.
Why inspect before heat sealing?
Before sealing, the film is already in its pouch position but not yet sealed in, which is when it is easiest to see whether each film is there, how many there are and where it lies.
Does the line stop when a defect is found?
No. The system logs that pouch and the reject unit removes it automatically when it reaches the reject outlet, so the line keeps running.
Does it work for transdermal patches too?
Yes. The Huanghai MJ180 cuts and packs both oral thin films and transdermal patches.
Next Step
See the full specification of the Huanghai MJ180 ODF cutting and packaging machine.