| 摘要 |
When applying a reaction mixture to a moving substrate (15) in the production of foam sheets, in order to achieve an evenly thick film of mixture over the entire width of foam whilst keeping the dwell time of the reaction mixture short, two symmetrically arranged, drive-coupled fan rollers (7, 8), the diameter of which decreases from the mixture feed point (11) to the sides, are used, these fan rollers (7, 8) generating an airstream with the effect of transporting away from the mixture feed point (7). <IMAGE> |
