| 摘要 |
PURPOSE:To stabilize the subject filter when water us poured and to increase its resistance against external force by a method wherein a rectangular sheet bent in double is assembled by opening by some angle and used by placing on an upper edge of a coffee cup with a space between the sheet and a water surface. CONSTITUTION:An upper edge 4a of a filter bag 4 which is sandwiched and hidden in a flat state between and about middle parts of rectangular sheets 1 and 2 which are longer in the width than in the depth and bent in double with a bending line standing in the vertical direction is made to run along upper sides 1a and 2a of the rectangular sheets 1 and 2, and the centers of the upper edges 4a, 4a on both sides of the filter bag 4 are coupled respectively at one point with the upper sides of the respective rectangular sheets 1 and 2 which are contact with the respective upper edges. Further, a packed coffee is put in the filter bag 4, if necessary, and a downward bending seal bent in double which is incorporated with an opening string 9 is adhered from outside of the rectangular sheets. On lower sides of the respective rectangular sheets 1 and 2, a placing and engaging part 11 with a coffee cup 13 is formed in a projection. Thus a simplified filter 15 is constituted. |
