Patent ID: 9517852
Filing Date: 2016-12-13
CPC Classification: B29C,B29K,B29L,B65B,Y10T

Claim Text:
1. Device for ultrasonic welding of a flexible structure, to be conformed into sachets, this device including at least two airgaps each defined between a sonotrode and an anvil carried by respective support structures the distance between which varies between a close together welding position and a spaced apart flexible structure movement position, in which airgaps the flexible structure to be welded is intended to be received to produce at least two weld lines, wherein for each airgap an anvil and/or a sonotrode both associated with this airgap is at least partially mobile relative to a support structure of this anvil or sonotrode, the two anvils being movable independently of each other.