Abstract: A view angle control sheet comprising a non-oriented light permeable polymer layer having cracks of regular directionality is disclosed. The view angle control sheet of the present invention has good view angle control property and can easily be obtained at low cost. The sheet having good view angle control property with respect to two or more directions can also easily be obtained as required at low cost. The view angle control sheet of the present invention can be used in office equipment displays, automobile meters, outdoor displays, windows and the like to desirably control view angles.

Abstract: A reflection screen includes a light-reflecting substrate laminated with a light-transmitting polymer layer having light absorptive crazes of regular directionality. The reflection screen is formed by coating or laminating the light-reflecting layer on the substrate, drawing over a blade in a direction perpendicular to the blade to form the crazes and inserting a light-absorbing material into the crazes. Images projected on the reflection screen have high contrast and can be observed as sharp images even in a lighted area such as in a room lighted by fluorescent lighting.

Abstract: A masking film comprising a light-shielding peelable layer provided on a transparent support wherein a binder component of the light-shielding peelable layer comprises 20 to 40% by weight of a rubberlike resin, 25 to 75% by weight of a vinyl chloride resin and 5 to 35% by weight of a thermoplastic resin containing OH groups compatible with the rubberlike resin and the vinyl chloride resin based on total resin components, which maintains anti-blocking property and appropriate adhesion after a long period of time.