| 摘要 |
PURPOSE:To manufacture a container, light, of high strength, not corroded even if buried in the earth and of drain properties by boring a high molecular sheet manufactured by orienting a high molecular material oriented in one or two directions preliminarily, and then forming a network high molecular sheet manufactured by orienting said sheet in one or two directions. CONSTITUTION:A high molecular material can be oriented and represented by thermoplastic such as polyethylene, polypropylene, vinyl chloride or the like, which is oriented, for instance, in the biaxial direction to manufacture a sheet with strength higher than a matrix. As for the boring process for the high molecular sheet, for example, punch processing is suitable. The shape, dimension and number can be fixed by the nature of use. Strength is enhanced as a result of orientation of each of network by carrying out tension processing after boring. A square container 3 can be assembled by over-lapping bottom sections of said sheet and combining two sheets. |
