| 摘要 |
PURPOSE:To provide a molded paper pipe which is light in weight, elastic, strong, easy to handle, suppliable inexpensively and recycleable to reutilize and reuse after the paper pipe is finished its use. CONSTITUTION:In a molded paper pipe 1, it has a sectional form of an angle shape, a channel shape, I shape, T shape, Z shape, H shape, etc., and it is constituted by providing a spatial part 2 running along an outer circumferential form of the molded paper pipe on its inside. |
