@605 carsten
Several times I have taken off in a medium behind another medium at high density airports with minimal spacing between departing aircraft. If you are unlucky enough you will get a faceful of anti-icing fluid somewhere about 800-1000 feet. If the anti-icing fluid is falling off on the runway then it is not doing it's job.
Occasionally you might get an aircraft that has been de-iced with hot Type 1, but not subsequently anti-iced because the conditions do not demand it. Type 1 has a viscosity closer to water so dripping on the runway does not make it slippery. If anti-icing Type 3 or 4 treatment has been used it is designed to remain on the wing until at least 140kts. It also makes ramp areas deadly slippery underfoot if the Snowman crew have been splashing too much of it about.