This invention relates to an ultrasonic sealing device and in particular, this invention relates to an ultrasonic sealing device having a sonotrode which applies the ultrasonic vibration and an anvil as a passive counterpart. More particularly, this present invention relates to the ultrasonic sealing device wherein ...

This invention relates to a water repellent composition for paper and in particular, this invention relates to a water repellent composition coated on paper bag so that water cannot stick on the surface on the paper. The invention relates furthermore to the process of preparing the water repellent composition for pa...