Arch strapping machines can be automatic or semi-automatic. They are much faster than strapping tables and less dependent on operators. On the other hand, they are more expensive.
In order to choose an automatic arch Strapping Machine, it is essential to know the maximum size of the goods to be strapped. This will allow you to determine the optimal arch size. The two standard dimensions for the interior of the arch are 850 mm wide by 650 mm high and 650 mm wide by 500 mm high. You will also need to define the strapping rate to determine if a standard strapping machine is sufficient or if you need to use a more powerful strapping machine, such as a high-speed strapping machine.
Strapping tables are semi-automatic machines that require more intervention from the operator who must position the goods, press a button to start the strapping operation and then remove the goods when the cycle is complete. These are entry-level machines for low-volume operations. They are generally the size of a small desk. The operator takes the free end of a strap that has been put out by the machine, wraps it around the package and manually introduces it into the strapping and fixing area. The machine automatically tightens the strap according to a predefined tension, fixes the ends and provides a predefined strap length for the next cycle. Strapping tables are relatively inexpensive. They can be highly versatile and are used both for primary strapping in low volume operations and for ocassional or off-line strapping.
The main advantage of this kind of strapping machine is that the size of the goods to be strapped does not matter. The package just needs to be 10 cm wide so that it completely covers the heater blade. As this type of strapping machine does not have an arch, strapping volumes are unlimited. The cycle time is very short, about 2.5 seconds. The strapping table has one disadvantage: the operator must intervene to grasp the strap coming out of the table and introduce it into the machine so that the strapping cycle can begin. This type of strapping machine is particularly suitable for small and medium production rates.