| 摘要 |
An apparatus for the continuous simultaneous application of coatings of constant thickness to two sides of a material web, having two adjustable two-edged spreader blades confronting one another at an angle, between which the material web passes for the proportioning of the coatings, a chuck for each blade, and means clamping each spreader blade along one edge in the chuck, the other edge of each blade parallel to the clamping line being free and engaging under bias and a corresponding biasing force the material web carried over the free edge of the other spreader blade at an acute angle to the direction of movement of the material web, and means applying a biasing force to each blade along a fulcrum line the improvement wherein one spreader blade is rigid and the other spreader blade is resilient, the chuck of the resilient spreader blade being pivotable about the engagement line between the resilient spreader blade and the rigid spreader blade and about a line outside of the clamping line for movement away from the rigid blade the clamping line of the resilient spreader blade being displaceable relative to the rigid spreader blade to adjust the biasing force while the engagement line and the fulcrum line of the resilient spreader blade are fixed relative to the rigid spreader blade during a continuous coating operation.
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