| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a three-layer insulation structure for agricultural greenhouses which is excellent in workability and formed by stretching out film in three layers to make double insulation space so as to be largely improved in insulation effect and thereby save energy, so that farm crops can be cultivated not only in summer but also in winter. <P>SOLUTION: The three-layer insulation structure for agricultural greenhouses comprises: mounting a plurality pieces of lower-step film-fixing rails 4A on the roof or the wall of a greenhouse frame at prescribed intervals; stretching out a film over the rails to form a lower-step film layer 8A; joining middle-step film-fixing rails 4B with the lower-step film-fixing rails 4A; stretching out a film over the middle-step film-fixing rails to form a middle-step film layer 8B; forming a first insulation space 10A between the middle-step film layer and the lower-step film layer 8A; joining an upper-step film-fixing rails 4C onto the middle-step film-fixing rails 4B; stretching out a film over the upper-step film-fixing rails to form an upper-step film layer 8C; and forming a second insulation space 10B between the upper-step film layer 8C and the middle-step film layer 8B. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
