Sachets and stick packs are two packaging formats frequently used for single-serve packages, with a filling process similar to vertical form fill seal machines. However, because the packages are generally narrow, roll stock film is generally sliced into multiple lanes before filling.
While variations exist, stick pack machines generally create a fin or lap seal in the back of the package, as well as a top and bottom seal. Sachet machines, on the other hand, may create a 3- or 4-sided seal, or even a unique shape design.
Single-serve package formats have continued to gain in popularity in recent years, with various drinks, supplements, and other products shifting their production.
In the wake of the impact of COVID-19, there is also a growing trend of companies manufacturing hand sanitizer sachet packs, rather than larger rigid plastic bottles.