Patent ID: 6658708
Filing Date: 2003-12-09
Classification: B29C

Abstract:
A tenter apparatus in which a sheet-form material is preheated while moved, and said sheet-form material is oriented in a width direction thereof after preheating, said tenter apparatus comprising:a left film grip for holding a left-side edge of said sheet-form material; a right film grip for holding a right-side edge of said sheet-form material, said right and left film grips moving at a same speed; a left tenter rail along which said left film grip runs, said left tenter rail being constituted of a left entrance rail portion, a left exit rail portion, and a left rail connecting portion combining these rail portions; a right tenter rail along which said right film grip runs, said right tenter rail being constituted of a right entrance rail portion, a right exit rail portion, and a right rail connecting portion combining these rail portions; positioning means for changing a width between said right and left tenter rails, said positioning means being independently provided on the respective rail portions and the respective rail connecting portions; and a controller for controlling said positioning means in accordance with an orienting magnification optionally set, said controller adjusting a distance between said right and left tenter rails so that an orientation axis inclines at an angle of 10Â° or more and 80Â° or less relative to a side edge of said sheet-form material.