Reverse Roll Coating Configuration
topic
Reverse roll coating applies compound from an applicator roll rotating in the direction opposite to the substrate travel, creating a hydrodynamic film splitting at the reverse-rotating nip that meters compound onto the substrate at coating weights of 5 to 50 grams per square metre, with coating weight controlled by the gap between applicator and metering rolls rather than cell volume, providing smooth, uniform coatings of lower viscosity compounds that gravure cell patterns would distort.
Role
Provides smooth uniform coating for lower viscosity compounds including thin adhesives, primers, and functional treatments where the continuous film application of reverse roll coating achieves better surface smoothness than the cellular pattern transfer of gravure coating, with reverse roll coating being used for optical coatings, anti-static treatments, and bonding primer applications requiring maximum surface uniformity.
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