Modular screed box

A mobile applicator comprising:

• a frame;
• a plurality of wheels rotatably connected to the frame;
• a kettle attached to the frame, the kettle holding a thermoplastic material;
• and
• a screed box positioned to receive the thermoplastic material from the kettle, the screed box comprising:
• a screed bucket;
• a screed plate mount attached to the screed bucket, the screed plate mount including a sealing edge;
• a screed plate slidably connected to the screed plate mount, the screed plate including at least one screed flange;
• a screed bar attached to a bottom of the screed bucket, the screed bar comprising:
• a body;
• and
• a sealing lip including at least one projection;
• wherein the screed bar is slidable between an open position where the sealing lip engages the sealing edge and a closed position where the sealing lip is disengaged from the sealing edge;
• wherein the at least one projection engages the sealing edge when the screed bar is in the open position and engages the sealing edge when the screed bar is in a closed position;
• and
• wherein the sealing edge, the sealing lip, and the at least one projection define at least one opening when the screed bar is in the open position.

A screed bar for a thermoplastic line striper, the screed bar comprising:

• a longitudinally-extending body having a fore end, an aft end, a first side, and a second side;
• a sealing lip extending from the aft end at a bottom of the body;
• and
• a projection extending horizontally from the sealing lip.

A screed plate for a thermoplastic line striper, the screed plate comprising:

• a vertical portion, the vertical portion comprising:
• a top edge;
• a lower lip disposed opposite the top edge;
• a first screed flange extending from the lower lip;
• and
• a body extending between the top edge and the lower lip;
• a horizontal portion projecting perpendicularly from the top edge of the vertical portion.