| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to shield infrared rays for a long time and to permeate visible rays and ultraviolet rays with excellent light resistance by providing an infrared rays shield layer using inorganic infrared ray shielding agent containing tin oxide as a main ingredient on a transparent base material sheet. SOLUTION: The agricultural sheet 10 comprises an infrared rays shield layer 12 on a transparent base material sheet 11 made of any of polyester, vinyl chloride, polyolefin resin sheets. The layer 12 is formed by coating the sheet 11 with coating liquid dissolved or dispersed in solution or dispersant containing transparent resin with infrared rays shielding agent as binder. The inorganic agent contains tin oxide of fine particles having a particle size of 500Åor less as a main ingredient, and, as required, one or more types of ingredients selected from copper oxide, zinc oxide, magnesium oxide, antimony oxide, iridium oxide, metal oxide belonging to the groups IVa, Va or VIa of the periodic table of the elements, gold, silver and carbon black in a range of 0.1 to 50wt%. |
