拉伸膜的制造方法及光学层叠体的制造方法
By using a film stretching device in the production of oblique stretch film to adjust the clamp spacing and travel speed, the problems of in-plane phase difference and orientation angle deviation were solved, and high-quality oblique stretch film production was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NITTO DENKO CORP
- Filing Date
- 2022-09-05
- Publication Date
- 2026-07-17
AI Technical Summary
In the continuous production of long, obliquely stretched films, in-plane phase difference and/or orientation angle are prone to deviation, affecting the quality of optical laminates.
The membrane stretching device is used for oblique stretching. The clamps of the component are supported by a ring-shaped reference track and a spacing setting track. By adjusting the clamp spacing and the travel speed, the deviation of the in-plane phase difference and orientation angle is controlled, including the adjustment of the clamp spacing change rate from -10% to 10%.
Without changing the fixture spacing variation curve or heating temperature, the in-plane phase difference and orientation angle deviation are reduced, thereby improving the quality of the obliquely stretched film and the stability of continuous production.
Smart Images
Figure CN115847788B_ABST