| 摘要 |
PCT No. PCT/EP92/01606 Sec. 371 Date Mar. 11, 1993 Sec. 102(e) Date Mar. 11, 1993 PCT Filed Jul. 15, 1992 PCT Pub. No. WO93/02008 PCT Pub. Date Feb. 4, 1993.A conical hollow tube body of paper or another organic molding material is made by forming a conical hollow tube body member having a narrow end and a wide end, and producing a spacing formation by making at least one dimple on an inside in the area of the narrow end by forming a projection in a wall of the body member immediately upon completion of the body member from an outside of the latter. |
