The answer is polyester. The food-grade filter is woven from polyester monofilament, which has high requirements on the uniformity of the mesh, because the mesh determines the quality of the filter product, and only in this way can it work on the filter. The main components of polyester fiber are organic dibasic acid and diol. Polyester fiber is actually a kind of polymer compound, which can be regarded as a kind of synthetic fiber. This material is very strong, easy to clean, easy to dry, and non-toxic, suitable for food-grade filters.
Polyamide fiber (commonly known as nylon) is suitable for making cloth or bags with a certain filtering effect, and polyamide is a chemical material that is toxic, so it is not suitable for making food-grade filter screens.
