High speed powder coating line for heat sensitive substrates

A system for applying a powder coating to a heat-sensitive substrate, the system comprising:

• at least one radiative oven;
• at least one convective oven;
• and
• a powder application system including a plurality of powder application devices configured to apply powder to at least a top surface of the heat sensitive substrate while the heat sensitive substrate is oriented in a horizontal orientation.

A system for applying a powder coating to a heat-sensitive substrate, the system comprising:

• a powder application system including a plurality of powder application devices configured to apply powder to at least a top surface of the heat sensitive substrate while the heat sensitive substrate is oriented in a horizontal orientation;
• a first radiative oven positioned prior to a powder application system;
• a second radiative oven position after the powder application system;
• a first convective oven positioned prior to the powder application system;
• and
• a second convective oven positioned after the powder application system, wherein the first radiative oven and the first convective oven are configured to heat the heat sensitive substrate in combination an prior to the application of the powder;
• and
• the second radiative oven and the second convective oven are configured to heat the heat sensitive substrate in combination and after the application of the powder.

A method for applying a powder coat to a heat-sensitive substrate, the method comprising:

• conveying the substrate horizontally at a first conveyance speed;
• radiatively heating the substrate in the horizontal orientation at the first conveyance speed;
• convectively heating the substrate in the horizontal orientation at a second conveyance speed, the second conveyance speed less than the first conveyance speed;
• and
• applying powder to the substrate in the horizontal orientation.