| 摘要 |
PURPOSE:To provide a technique which is particularly profitable as compared with dispersion processing of polytetrafluoroethylene and moreover a polytetrafluoroethylene coated layer can be formed on a seamless tubular base. CONSTITUTION:A green tape or a green tube 2 made of polytetrafluoroethylene containing a solvent is superposed upon at least one face of a seamless tubular base 1, rolled and laminated, through which the same is integrated. Then after removal of the solvent, firing of the same is performed. |
