| 摘要 |
<p>A dust collector (26) for detachable, e.g. by adhesion, placing at and collecting of dust (29) from a hole (31) drilled in a mainly vertical wall (28) and comprising a first (1;18) and second (9;19) relatively thin sheet facing the wall (28) and away from the wall respectively upon use. The dust collector is formed by the two sheets (1,9;18,19) connected along a continuously extending part of their edges (5a,5b,8;12a,12b,13;35a,35b;36a,36b). In the preferred embodiment, the two edges are a part of a plane unfolded blank (17;34;37) in which the second sheet (9;19) is designed with a fold line (14) extending between two points (15a,15b) on its free edge (10). The second field can be used for printing a message such as an advert or user instructions. The dust collector can be produced by means of simple tools of inexpensive materials such as paper, cardboard, plastic or paperboard that in themselves do not have any great stiffness of shape, the special geometric design of the dust collector providing the necessary stiffness of shape for the dust collector not to loose its adherent hold on the hanging wall.</p> |
