| 摘要 |
PURPOSE:To optionally control temperature of a sheet in a considerble range, by permitting the angular position of a angle variable roll with respect to a temperature control roll to vary. CONSTITUTION:The angular positin of the angle variable roll 7 is set by a swingable arm 5 with respect to the temperature control roll 4, the resin sheet (a) extruded from a nozzle 2 is passed between the temperature control roll 4 and the angle variable roll 7 to become in contact with a guiding roll 9, and the opposite servages thereof are bit by clamping chains 11 so that the sheet (a) is delivered. By controlling the angular position of the angle variable roll 7 with respect to the temperature control roll 4, the length of the sheet (a) in contact with the temperature control roll 4 can be varied. The length of the contact is proportional to the cooling effect of the temperature control roll 4 exerting on the resin sheet (a), and therefore the temperature of the sheet (a) is automatically controlled, and thereafter the sheet is conveyed to the clamping chains 11. |
