Patent ID: 9669955
Date: 2017-06-06
CPC Classifications: B29C,B29K,B29L,B65B,B65D

Claim:
1. A package formed using an ultrasonic sealing process on a form-fill-seal machine to produce a narrow weld region that exhibits greater durability, to permit use of less material per package, said package comprising: a thin film, said thin film folded to have one or more sets of overlapped edges at a seam; and a weld at each of said one or more overlapped edges to form and seal said seam to create a sealed cavity; each said weld at said one or more overlapped edges comprising a selective three-dimensional grid pattern, said selective three-dimensional grid pattern formed by a coordinated plurality of energy directors on each of a sonotrode and an anvil of the form-fil-seal machine, the energy directors having a rectangular plateau surface and four angled side surfaces configured to selectively deform and increase a total surface area of the thin film at the weld when sandwiched between the energy directors the sonotrode and anvil, and subjected to vibration-transmissive contact during a welding process, to form said three-dimensional grid pattern in said thin film, and weld said overlapped edges.