| 摘要 |
PURPOSE:To more thinly form the whole thickness, to reduce the cost and to eliminate a public pollution property by making the whole cassette coffee by using paper, and forming a paper cup part so as to be foldable. CONSTITUTION:Paper board 10 forms a paper cup part of cassette coffee. At the time of assembling it, first of all, by folding a triangle (c) of left and right side walls 113, 114 to the inside by allowing diagonal ribbed lines 109-112 of reinforcing members 105-108 to serve as borderlines, front and rear, and left and right side walls 113, 114 and 120, 121 are erected by allowing ribbed lines 101-104 to serve as base points, and also, the inside surface of a triangle (a) of the reinforcing members 105-108 is superposed and stuck, and subsequently, by superposing and sticking the outside surface of a triangle (b) to the triangle concerned (a), a square measure-like paper cup part is formed. Also, as for the lower filter paper 201 of an extracting part 20 constituted of the lower filter paper 201 and the upper filter paper 202, its lower part is formed in what is called a reverse dome type of a pot bottom shape, a coffee liquid concentrates on the center part of the filter paper, and a small quantity of coffee powder can be extracted efficiently. |
