| 摘要 |
PURPOSE:To provide the surface-treating method of crosslinked resin foam, while its expansion ratio is mot reduced and its warpage does not occur. CONSTITUTION:A crosslinked polyethylene foamed sheet 1 is passed the space between the endless belts 2, 2 hung over the distance between heating rolls 3 and cooling rolls 4, and while the surface of said foamed sheet is pressed to the endless belts 2, 2, its surfaces are heated by the heating rollers 3, 3 and are cooled by the cooling rolls 4, 4. |
