| 摘要 |
PURPOSE: To polish as it is and to mold by deciding the upper limit and the lower limit of the ratio of the bore of the form to the thickness of a board when a wet sheet is formed by wet sheet making from the slurry of kraft pulp, a plurality are laminated, dehydrated to be dried by heating under pressure, integrated and formed in a cylindrical shape. CONSTITUTION: The bore of a form 1 formed in a cylindrical shape obtained from pulp is 80 to 500 to the thickness of a board, the iron core 12 of a resin roll is contained in the form 1, so centered that assembling gaps 13 become equal intervals, and both are sealed. Then, the core 12 is inclined, liquidlike resin is poured in the gaps 13, heat-treated to cure the resin, then cooled to the ambient temperature, cut together with the form 1, and polished to be finished. Since the form 1 is used, it can be polished from above the form without removing from the form in the case of polishing to finish it, but formed in the cylindrical shape. |
