The latest technology to be employed for net sealing is the use of ultrasound.
For some time, ultrasonic technology has been in use for sealing net bags containing bird seed,
nuts and fat balls, and for food products including chocolate and confectionery. Now there is an
increasing trend towards the use of ultrasonic technology for other food products including
cheese portions and fresh produce such as onions. Short bursts of high frequency sound locally
generate heat which fuses the net in the sealing jaws without the need to employ a metal clip.
The German manufacturer Dieter Heick Verpackungsmaschinen GmbH & Co. KG is amongst
the leaders in this field.
The USG range of machines are compact, easy to use and require little maintenance other
than normal daily care. They can be fitted with a label applicator and in-line printer to print and
apply a polyethylene wineglass label and are particularly suitable for high volume, low weight
packs employing extruded net. For example, operating with 2,5 oz (70 g) packs of chocolate coins,
packing rates of up to 50 packs per minute can be achieved with the standard machines and
pack rates approaching 100 packs per minute are possible.
They can be fed with product from most types of counting or weighing equipment and the
automatic tube-changer ensures that continuous operation is maintained when the net tube needs refilling.
Ultrasonic sealing offers benefits including:
No clip wire required
Strong seal formed
High packing rates
Low maintenance machinery
Net-tube replenishment is easily accomplished using the Model TL net-tube loading machine.
Using rubber rollers and pneumatic control of the roller pressure, the Model TL loading
machine is an essential accessory to the ultrasonic sealing machine or, alternatively, can be used
in conjunction with other net tube loading requirements.
With new product packaging applications being regularly addressed, now is the time to consider
the use of ultrasonic sealing for new or other traditional high-volume net packaging requirements.
For further details on the range of ultrasonic machines please CONTACT US TODAY!