| 摘要 |
PROBLEM TO BE SOLVED: To prepare a lightweight shading sheet having excellent shading effect and colorable to ant desired color, this suitable as a material for tents or decorative curtains, by providing the upper surface of a base fabric with a surface layer via a shading layer while the opposite surface thereof with a recourse face layer. SOLUTION: First, the surface of a plain- or twill-woven base fabric 11 consisting of a polyester of nylon is coated with a composition prepared by blending 100 pts.wt. of a polymeric material such as chlorosulfonated polyethylene with 5-30 pts.wt. of aluminum power and 3-50 pts.wt. of a black-based colorant such as carbon blank within a thickness of 12-200μm by calendar topping or laminating process, thus forming a shading layer 12. Subsequently, the shading later 12 is laminated with a composition prepared by blending 100 pts.wt. of a polymer similar to the above polymeric material with 5-80 pts.wt. of rutile-type titanium dioxide in a thickness of 50-200μm to form a surface layer 13. Along with the above process, the opposite surface of the base fabric 11 is provided with a reverse face layer 14 by coating the opposite surface with an organic solvent solution of a polymer containing various functional additives such as a flameproofing agent by means of a doctor knife or roll coater, thus obtaining the objective shading sheet 1.
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