| 摘要 |
A dimpled sheet, with a flat area and a plurality of dimples protruding over the flat area, each having a dimple casing and a dimple cover, wherein contact surfaces for placement of the dimpled sheet against a subsurface are formed on the side of the dimples by the outer sides of the dimple covers. The proportion of the total contact surface of all dimples of the total surface of the dimpled sheet is greater than 35%, with the base surface of the dimpled sheet being formed from the flat area and the base surface of all dimples at the level of the flat area. The dimpled sheet has a protection coefficient (PC) of more than 10.000, whereby the PC is: <?in-line-formulae description="In-line Formulae" end="lead"?>PC=(CS)<SUP>2</SUP>xDH <?in-line-formulae description="In-line Formulae" end="tail"?> with CS=total contact surface of all dimples in [%] of the total base surface of the dimpled sheet DH=dimple height [min].
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