holes 28 which are respectively secured to an aluminum top plate 26 the middle cylinder 21 has a substantially conical portion 22 in the lower end portion thereof the jet holes 28 jet water for cleansing the middle cylinder 21 and the outer cylinder 23 a seal ring 27 is also secured to the lower end portion of the outer cylinder 23 the paper making portion 3 is structured such that a wire cloth 31 is fitted to the top of a paper making frame 32 and a cover 34 for collecting moisture component such as the overflowed raw material is located in the outside of the paper making frame 32 fig3 is a top view of the paper making portion 3 reference numeral 38 denotes a water supply port 33 a moisture suction port 35 a discharge port of the cover 35 45 a central body and 46 an opening the apparatus shown in the drawings is designed to form an annular paper body as a discontinuous paper body and the central body 45 forms a central hole fig4 shows a condition that the stirring tank 2 and the paper making portion 3 in the apparatus shown in fig1 and 2 are separated from each other fig5 and 6 are top views showing an arrangement of air nozzles 25 as stirring mechanisms as shown in fig4 the stirring tank 2 is separated.