POLLEN INTRUSION PREVENTIVE WINDOW SCREEN AND POLLEN INTRUSION PREVENTIVE NET MATERIAL USED THEREFOR

摘要

PROBLEM TO BE SOLVED: To secure sufficient ventilation similar to an ordinary window screen in a period of not scattering pollen; and to secure ventilation of a certain degree while preventing intrusion of the pollen in a period of scattering the pollen. SOLUTION: This pollen intrusion preventive net material 5 having a mesh finer than this net part 3 is detachably stuck to one surface side of the net part 3 of a window screen body 1 so as to cover its net part 3. COPYRIGHT: (C)2006,JPO&NCIPI