| 摘要 |
<p>Procedure to make a friction-reducing surface-structure on a surface surrounded with a streaming medium, characterized by the fact that first the parts of the surface which you wish to provide with the special surface structure are painted with a paint that can be hardened under a tight foil after which, when the paint has hardened somewhat a totally tight plastic foil is applied, whose inside has a stamped surface opposite to the one the surface shall have at which the foil is gradually pressed against the paint so that it enters into the depressions of the foil and air between the foil and the paint is pressed out and that the foil sticks to the paint and the foil may remain on the paint until it has hardened after which the foil is pulled off.</p> |
