Pulsed heating process for curing substrates with near infrared radiation
A substrate, pulse technology, applied in the device, coating, pretreatment surface, etc. of surface coating liquid, which can solve the adverse effects of powder coating coating gloss and appearance, coating ablation, unacceptable gloss level, etc. question
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment
[0048] The present invention will be further defined in the following examples. It should be understood that these examples are only intended to illustrate the present invention. From the above discussion and this example, one of ordinary skill in the art can ascertain the essential characteristics of this invention, and without departing from the spirit and scope thereof, can make various changes and modifications of the invention to adapt it to various usages and conditions. Accordingly, the invention is not limited by the illustrative examples presented below, but is defined by the claims contained below.
[0049] Preparing, applying, melting and curing powder coatings
[0050] The powder coating compositions used in the Examples and Comparative Examples were converted to powder coatings by conventional techniques for forming powder coating compositions. That is, the ingredients of each coating formulation were thoroughly mixed in a ZSK twin-screw extruder operating at 30...
Embodiment 1
[0071] Black hybrid powder coatings were applied to Q panels at room temperature. After coating, the powder coating was melted and cured by heating at 35% NIR emitter power for 2.5 seconds, followed by a 0.1 second pause in heating, followed by a further 2.5 seconds at 100% NIR emitter power. A sample was prepared by uninterrupted heating from 35% emitter power directly to 100% emitter power. A set of 5 additional Q boards were prepared with black hybrid powder coating, where the coating was applied to each of the 5 Q boards at room temperature, each with the same pulses as above 2.5 sec, pause, 2.5 sec Curing treatment, the only difference is the pause time for each coated board. That is, after coating these 5 additional Q plates, by heating at 35% NIR emitter power for 2.5 seconds, then pausing heating for 0.5, 1.0, 1.5, 2.5 or 5.0 seconds, then at 100% NIR emitter power again Heat for 2.5 seconds to melt and cure the powder coating of each Q board. The final temperature ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More