PURPOSE: To enable high polymer to be drawn stably and efficiently through economical facilities by carrying out reverse rolling for first directional drawing in installing pinch rolls or tension applying devices in front and the behind of a rolling machine, and drawing through a tenter method for the drawing in a right-angled direction therewith.
CONSTITUTION: In installing pinch rolls 3, 3' or tension applying devices in front and the behind of a rolling machine 2, reverse rolling is performed while being applied with tension. After extruding, a material is cut into a predetermined length, and heated then in a heating furnace 1, after that, rolling is conducted. Elastic reversion is decreased by the tension, and it becomes possible to perform stable rolling. At this occasion, the material temperature lowering due to the prolongation of rolling times is permitted because the material thickness is relatively large. In the next place, the drawing in a right-angled direction in subsequence requires about 2 at an ordinary drawing rate, however, a tenter method 4 is employed as a drawing method. The tenter method 4 is of a type that the material may be bound by clip-shaped grasping devices by its end parts, and drawn continuously in the width direction.
HIGASHIDA YASUHIRO
WADA YASUHIRO
KIKUMA TOSHIO
