| abstract |
(57) [Problem] To provide a packaging material having high light-shielding properties and good appearance without using metal foil. SOLUTION: A surface protection film 11, a titanium oxide containing resin layer 12, a light shielding layer 13 containing 250 to 2400 parts by weight of titanium oxide and 3 to 30 parts by weight of carbon black with respect to 100 parts by weight of a binder resin. Thus, the packaging material 10 was formed by the heat sealing layer 14. Since the titanium oxide-containing resin layer 12 absorbs ultraviolet light and exhibits white color, it is preferable in appearance, and the light-shielding layer 13 completely blocks visible light and contains titanium oxide, so that it becomes black. Suppress. |