| 摘要 |
<p>To provide a particularly advantageous web formation, the screen-printing screen is provided with a periodic perforation pattern whose pattern period has a regular hexagon which is surrounded by pentagonal holes which are offset relative to one another by 60 DEG in each case. In this case, a side of equal size of one of the pentagonal holes lies opposite each side of the hexagonal hole. The sides of the pentagonal holes facing one another each run parallel to one another. The sides of the pentagonal holes adjoining these sides running parallel to one another are flush with one another in each case so that the outer contours of the total of six pentagonal holes surrounding the regular hexagon in turn form a regular hexagon. By this arrangement, webs of absolutely identical width are formed both between the pentagonal holes themselves and between the hexagonal hole and the pentagonal holes and between the individual pattern periods themselves. <IMAGE></p> |
