| 摘要 |
PROBLEM TO BE SOLVED: To obtain a sheet for a valley of a multiple arch greenhouse, being a sheet to be laid on a valley of a multiple arch greenhouse, capable of preventing rise in temperature of a frame in contact with the sheet. SOLUTION: This sheet 1 for a valley of a multiple arch greenhouse to be laid on a valley of the multiple arch greenhouse is equipped with heat ray reflecting performances. The method for developing the heat ray reflecting performance includes a method for providing a layer supplied with glass beads or resin beads, a metallized layer 3 or a metal foil layer 5 and a method for adding a silver colorant. A polypropylene is most suitable as a sheet material. |
