PROBLEM TO BE SOLVED: To enable reuse of even a sheating board which deteriorates or exceeds the durable reusable number by regenerating it, by inserting an appropriate board in the inside of a heat-shrinkable tube made of thermoplastic resin and heating and contracting the heat-shrinkable tube and coating the board with thermoplastic resin. ;SOLUTION: End materials 1 constituted of chips resulting from a cutting work executed in accordance with the dimensional change of a form caused by dimesions at an execution site, are put in order to have a dimensional scattering only in the longitudinal direction. Then, these end materials 1 are vertically arranged to contact each other so as to have a specified dimensional shape having La in lateral size and Lb in vertical size and thereafter, these materials are inserted in a heat-shrinkable tube 2 by means of an appropriate support. Then, the supporting means is removed and the heat-shrinkable tube 2 is cut to specified dimensions. Then, the tube 2 is heated to contract and integrally coated to form a sheathing board 3.;COPYRIGHT: (C)1997,JPO
展开▼