Method and apparatus of vacuum deposition
AssigneeDielectric Coating Industries
InventorsCarmen B. Bischer, Jr., Edward A. Small, Jr.
Life of this patent
Estimating the term…
Abstract
Improvements in the method and apparatus of vacuum deposition of a highly reflective surface onto aluminum lighting sheet wherein a coil of aluminum is disposed within the vacuum chamber, both as it unwinds and as it rewinds, and the water vapor created by heating the aluminum web from the coil is made available to other vacuum deposition processing compartments within the vacuum chamber including a glow discharge chamber normally fueled by argon gas.
Claims17
In apparatus for applying a coating of high light reflecting material to a continuously moving long web of aluminum from a coil, including coating means, and a vacuum chamber in which the coating takes place, the improvement comprising:
- a first vacuum compartment within the chamber wherein said vacuum compartment contains the coil of aluminum to which the high reflective coating is to be applied;
- and
- heater means in said vacuum compartment for driving off water from the coil and creating water vapor in said compartment.
In a machine for application of a high light reflecting coating to a long web of aluminum that has been wound into a coil, the improvement comprising:
- a first vacuum compartment for containing the coil of aluminum;
- a second vacuum compartment for deposition of a coating onto the web;
- feed means operable to unwind the coil of aluminum and direct the web out of said first compartment through said second compartment;
- water vapor source means;
- and
- water vapor transport means for interjecting water vapor into said second compartment.
In a method for vacuum deposition of a high reflective coating onto a web of aluminum wherein the aluminum is in the form of a long web wound into a coil, the improvement comprising:
- disposing the coil of aluminum in a first vacuum compartment;
- heating the aluminum web in the first compartment to drive off water and form water vapor.
Dependencies are inferred from the claim text.