I suggest reading the original linked article, if only because it includes a video with the zipper in action:
https://news.mit.edu/2026/three-sided-y-zipper-design-0504
Direct link to video. These are some freaking cool zippers. https://www.youtube.com/watch?v=AWig98GVIno
Direct link to video. These are some freaking cool zippers. https://www.youtube.com/watch?v=AWig98GVIno