CONTINUOUS WELDER
Continuous welders
Continuous welders are used in the pharmaceutical and food industries. They perform thermal welds. thanks to a so-called "continuous" scrolling of the bags. This packaging method is ideal for manufacturers wishing to speed up the sealing process of their bags. Faster than a machine running on shot by shot, and allowing simple and efficient welding, continuous sealers are compatible with all heat-sealable bags and clips (PE/PP/PA-PE/ALU/KRAFT). They can also be adjusted to seal packaging of all thicknesses.
How continuous welding works
The continuous welding process is simpler than you might think:
- The bag is clamped between two Teflon bars, they isolate the bag and make it move forward
- The conveyor is set to go at the same speed as the sealing bars are moving
- The bag passes between the two heating blocks, the sealing pressure depends on the spacing of the blocks
- The bag passes between the two cooling blocks to cool the weld
- The bag is then evacuated using the conveyor and the output toothed belts.
Setting up a continuous welder
To achieve the best seal quality, it is strongly recommended that you check your sealer's settings. You will need to adjust the feed speed and sealing temperature of your sealer to suit your bag.
Although this type of machine is compatible with all types of bags, they do not seal in the same way. So take the time to adjust your machine's sealing settings when you switch from a plastic bag to a cardboard bag, for example.
Also check that the running speed of the welding strips is equal to the speed of the conveyor.
Also discover our range of vacuum bags .
