| 摘要 |
<p>A substrate is coated with a mixture including at least a reactive part. The reactive part comprises between 30% and 100% multi-functional material, and is photo-initiator free. The multifunctional material may have three or more functional acrylate groups, and the coating may also contain a pre-polymer. The coated substrate is exposed, in a curing zone, to ultra-violet light from at least one lamp which has a power output of at least 140 wats per linear centimetre. A substantially inert atmosphere is maintained in the curing zone where the substrate is exposed to the ultra-violet light.</p> |
