Back to results
US 5,294,464 AGranted
Method for producing a reflective surface on a substrate
AssigneeLeybold Aktiengesellschaft
InventorsMichael Geisler, Rudolf Koetter-Faulhaber, Susanne Wuerz
Life of this patent
Estimating the term…
Abstract
A process gas atmosphere consisting essentially of (a) organosiloxanes and inert gas, or (b) pure silane or (c) silane plus inert gas is introduced into a vacuum chamber and exposed to microwaves to produce an electro-cyclotron resonance in a plasma for coating substrates. The process is useful for producing an adherent coating on a plastic substrate, especially an intermediate coating for a reflective coating in an automotive headlamp.
Claims19
Method for producing a reflective surface on a substrate, said method comprising the steps of
- placing a plastic substrate to be coated in a vacuum chamber,
- evacuating said chamber,
- introducing into said chamber a process gas atmosphere which consists essentially of one of (a) organosiloxanes plus helium, (b) pure silane, and (c) silane plus helium,
- generating a plasma from said process gas atmosphere, thereby producing an adhesion promoting layer on said substrate, and
- applying a reflective layer on said adhesion promoting layer.
2 more elements
Dependencies are inferred from the claim text.