| 摘要 |
PURPOSE:To make whole of a container type double filter compact, and avoid occupying much space with a container part in stowing and carrying the container type double filter by filling space between the double filter layers with coffee powder, and fitting a ring-shaped set frame to the mouth of the filter as an integral part thereof. CONSTITUTION:A container type double filter is formed of a container type outer filter 1 and an inner filter 2, and space between the outer and inner filters 1 and 2 is filled with coffee powder 3. Then, a ring-shaped set frame 4 is fitted to the mouth of the aforesaid container type double filter as an integral part thereof. Also, space 7 is formed between the inner and outer filters 2 and 1, in order to prevent hot water in a hot water pooling space 6 of the coffee bag of the double filter from leaking directly from the inner filter 2 to the external surface of the outer filter 1. In storing and packing the the coffee bag of the double filter, the bag is compressed to be flattened in a storing case 15 with a pressing force from upper and lower sides, and a seal 16 is applied to the upper side of the case 15 for storing and packing the bag. |
