Overspray apparatus and process

An apparatus for applying frictionizing coating to paper and plastic substrate, comprising:

• a connection to a supply of frictionizing coating;
• an application chamber;
• a first substrate feeder means connected to said application chamber to accept a continuous feed of substrate from an external source and guide the substrate to the application chamber at a downward angle;
• a second substrate feeder means connected to said application chamber to accept a continuous feed of substrate from the application chamber at a downward angle and guide the substrate to an external receiver at an exit angle which is greater than or equal to 180 degrees when measured from vertical up;
• at least one non-fogging spray nozzle for spraying frictionizing coating in fluid communication with said frictionizing coating supply connection;
• a deflector plate spaced apart from said at least one spray nozzle so that the discharge of the spray nozzle impinges upon a deflector plate;
• at least one spray shield movably mounted at a selected position to allow selective application of frictionizing coating onto at least selected region of the substrate;

A method for applying liquid coatings to a moving substrate, comprising the steps of:

• continuously moving substrate through an application chamber at a downward slope;
• supplying liquid coating to at least one non-fogging spray nozzle adjustably mounted within said application chamber;
• impinging the liquid discharged from each of said at least one nozzles onto a deflector plate above the substrate to cause said liquid coating to deflect laterally away from the deflector plate and descend within said application chamber toward said substrate;
• and,
• shielding selected regions of the continuously moving substrate to permit selective deposition of liquid onto selected regions of the substrate.

An overspray apparatus for applying liquid coatings to a moving substrate, comprising:

• means for continuously moving substrate through an application chamber at a downward slope;
• means for supplying liquid coating;
• spray means in fluid communication with said supplying means for providing a non-fogging spray of liquid coating within said application chamber;
• deflecting means for deflecting spray from said spray means laterally and descendingly within said application chamber onto said substrate;
• shielding means for shielding selected regions of said substrate to permit selective deposition of liquid coating onto selected regions of said substrate.