| 摘要 |
The present invention aims to provide an interlayer filling material for a touch panel which is used for filling an interlayer space between a touch panel and another member in production of a personal digital assistant and the like, which is excellent in followability to a difference in level due to a decorative printing portion or wiring upon filling of an interlayer space (upon lamination) and deaeration properties of removing air bubbles trapped upon filling of an interlayer space (upon lamination) or air bubbles left around the difference in level, which is capable of suppressing scattering of fragments even when the personal digital assistant is broken. The present invention also aims to provide a laminated body produced by using the interlayer filling material for a touch panel. The present invention relates to an interlayer filling material for a touch panel which is used for filling an interlayer space between a touch panel and another member, the interlayer filling material containing a plasticized polyvinyl acetal, the interlayer filling material having a storage elastic modulus G' (20) at 20°C of 2 × 10 5 Pa or higher, a storage elastic modulus G'(85) at 85°C of 1 × 10 6 Pa or lower, and a temperature Tg at which tan ´ reaches the maximum, within a range of -20°C to 100°C, of 5°C to 85°C. |
