date:Jan 18, 2013
edibly tight tolerances as they close on the film.
Although ultrasonic bag sealing on vertical packaging machines has been available for several years, until recently the technique could not deliver consistent results with films as thin as 30 microns. These thinner films are in demand because not only do they cost less than thicker gauges, they also reduce the amount of landfill waste after the contents have been consumed. There is a strong lobby from governments, supermarkets and consumers to