| 摘要 |
Method and apparatus for applying a liquid film of controlled thickness to a paper web (51). The apparatus is in the form of a flexible blade coater having a flexible blade (60) fixed at one end (61) and bearing against a backing roll (50) (with interposed web) at a free end (62). The blade (60) has independent loading means, preferably pneumatic. An intermediate loading means (63) applies a first load intermediate the fixed and free ends (61, 62) which serves primarily and substantially independently to establish blade geometry or tip slope. A second loading means (65) positioned near the free end (62) of the blade (60) primarily and substantially independently establishes tip load for a given geometry established by the first loading means (63). The compound loading arrangement allows a wider range of finer control of coating film thickness.
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