| 摘要 |
PURPOSE:To quickly extract regular coffee, and prevent milled coffee beans from being leaked at storage by sealing the upper part of the inner cylindrical part of a pipe consisting of an outer cylinder part and the inner cylinder part, blocking a through-hole provided on the circumferential wall of the inner cylinder part within a bag body at bag storage, and pulling out the pipe inner cylinder part at use. CONSTITUTION:A slender pipe 4 is an insert type double pipe consisting of an outer cylinder part 6 and an inner cylinder part 7, the upper part 8 of the inner cylinder part 7 is blocked, and a through-hole 9 is provided on the outer circumferential wall of the inner cylinder part 7. The through-hole 9 is set in a position such that it is situated and blocked within a bag body 3 at bag storage, and opened when the inner cylinder part 7 is pulled upward at use. The gas generated from milled coffee beans is passed into the inner cylinder part 7 from the outer cylinder part 6 and released to the outer part, whereby the bag body internal pressure is never increased, and hot water can be quickly penetrated into the bag. At storage, the pipe inner cylinder part 7 is pushed in and downsized, and the through-hole 9 is blocked, whereby the leak of the milled coffee beans is prevented. |
