| 摘要 |
The invention relates to an improved canister for preserving aroma of coffee or other spices having aroma, comprising; a hollow body of the canister and a cap (2) sealing the body (1), wherein the improved canister is characterized by having an elastic disk (7) sealing the canister and placed horizontally inside the canister at about 0.5 - 1.5 cm under the cap, the disk (7) having a major stationary portion (3) and a minor movable portion (5), and the cap (2), the body (1) of the canister or the movable portion (5) contains means for pressing and bending the disk movable portion (5) downwardly when the canister is sealed and having optionally means for retracting the disk movable portion (5) back to its original horizontal sealing position when the canister is uncapped.
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