| 摘要 |
PURPOSE:To facilitate desired stretching control, in biaxially stretching a film while the left and right side edges thereof being grasped, by providing a mechanism capable of arbitrarily adjusting the left and right displacements of the film. CONSTITUTION:Grasping elements 2 stretching a film 1 are mounted to a link devices 3 linked in a ladder form and grasp both side edge parts of the film 1 by a film grasping guide 4 to simultaneously stretch the film 1 in a fanwise state and are detached from both side edge parts of the film 1 by a film detaching guide 5. In this biaxially stretching apparatus, a follower sprocket 12 is mounted to the mount seat 20 freely sliding forward and rearward directions on a bed 9 coming to the running path of the link devices 3. By operating a handle 23, the center-to-center distances of the sprockets 10, 11 and the follower sprocket 12 are freely adjusted and displacements generated in the left and right sides of the film 1 are corrected. |
