| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a net structure allowing carrying out of simple and economical prevention of flight and extermination of flies etc. <P>SOLUTION: As a net structure for preventing the flight of and capturing of the flies etc., an external net and an internal net are stretched mutually parallel in a tensed state at a suitable interval kept therebetween, and at least both sides thereof are shielded to form a shielding space. A number of invasion holes for the flies are provided in the internal net, and a gutter-like fly reservoir is installed in the longitudinal direction in the lower end parts of both the nets. Spacers are provided in the longitudinal direction between the external net and internal net. Furthermore, the mutual interval of the external net and internal net, and the size of the invasion holes provided in the internal net are selected and set according to the species of the flies etc. The external net or internal net or both are coated with an attractant. The net structure may be applied to a window frame. <P>COPYRIGHT: (C)2012,JPO&INPIT |
