Causes and solutions for unstable bag length without photo mark tracking
Causes and solutions for unstable bag length without photo mark tracking
1.The drive belts for the centre cold seal and centre heat seal are loose or worn, causing slippage. Solution: Tension the belt or replace it with a new one.
2.Unsmooth rotation of the film roll. Solution: Loosen the fixing screws of the film roll holder, lift the holder and retighten the screws.
3.The tension spring for the centre cold seal is damaged. Solution: Shorten the spring to increase tension or replace the spring.
4.The bevel gears driving the centre cold seal and centre heat seal are worn. Solution: Replace the bevel gears.
5.The rubber roller is worn. Solution: Increase the pressure of the rubber roller compression spring to boost friction, or replace the roller.
6.The film feeding assembly keeps moving backward during operation of Model 190R Solution:
Check whether the PLC1 output point is faulty.
Check whether the driver is faulty.
7. Other related assemblies:
Worn bag-length film feed reducer: replace the reducer.
Jittering or overly loose chain and sprocket connection: inspect the sprocket alignment and running condition of all relevant assemblies.









