FILTER, ESPECIALLY COFFEE FILTER, AND PROCESS FOR PRODUCING IT

摘要

: A coffee filter, to be attached to the edge of a cup or like vessel, consists of a triangular frame attachable to the cup edge and a bag fastened inside the triangular frame and made of filter material, such as filter paper. The triangular frame is preferably formed by a paperboard or cardboard blank which can be unfolded into a triangle.