| 摘要 |
To have the possibility of introducing into a substrate at a low outlay and in fault-free manner as wide a range as possible of different impregnating agents, but particularly high-viscosity or highly concentrated solutions, foams or finishes, the impregnating agent (77, 78, 79) is introduced immediately in front of and into the nip (34, 35) of pairs of rollers (11, 12; 13, 14), penetrates into the substrate (43) there and at the same time is metered in the nip (34, 35) in terms of its quantity per unit length of the substrate. The impregnation can take place successively in steps in the nips of pairs of rollers connected in series. <IMAGE>
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