Filter bag for making tea has longitudinal seam and base made up of two folded sections, sides of bag having central longitudinal folds, allowing it to be opened wide for filling with tea

摘要

The filter bag for making tea has a longitudinal seam (6) and a base (2) made up of two folded sections (11, 12). The sides of the bag have central longitudinal folds (7), allowing it to be opened wide for filling with tea.