What is a gusset bag? A simple look at how they work
You've probably seen them at the grocery store or in your pantry without even realizing it, but if you're curious about what is a gusset bag, it's essentially just a bag with extra folds that allow it to expand and hold more stuff. While a standard flat bag is like a paper envelope—pretty limited in what it can hold before it starts to look awkward—a gusseted bag is designed to take on a more three-dimensional shape once you fill it up. ...