Method and apparatus for the proper quantized application of a m

Details Method and apparatus for the proper quantized application of a m Method and apparatus for the proper quantized application of a m

1986-03-10

1987-04-07

Lusignan, Michael R.

Coating processes

Measuring, testing, or indicating

Thickness or uniformity of thickness determined

118323, 118665, 118713, 2504611, 427 541, 427133, 427135, B05C 1100, B05D 306, B44D 120, G01N 2164

Patent

active

046560491

ABSTRACT:
Disclosed is a method of placing a measured amount of tracer material into a release agent solution so that the concentration of tracer material in the release agent as applied to a mold surface is an indication of the amount and distribution of the release agent on the mold surface. The release agent can be applied and/or re-applied until the amount of the tracer material reaches a predetermined value. In the embodiment disclosed the tracer material is a UV dye which will re-emit light when activated by a UV light source and the intensity level of the re-emitted light is a function of the amount of release agent applied.
Curing of the release agent preferrably taken place after each layer in multiple layer applications.
Also disclosed is a spray head (12) connected to a source (20) of release agent with UV dye therein for coating a mold surface (28). A source of UV light (30,32) activates the UV dye to re-emit visable light which is measured by a photometer (34) to practice the above method.
Also disclosed is a method and apparatus by which release agent degradation can be detected and corrected before the release agent is applied to the mold surface.
Also disclosed is a completely automatic release agent application cell wherein a release agent spraying robot (10) and a traveling oven (62) automatically processes mold surfaces with a release agent under the operation and control of a computer (64).

REFERENCES:
patent: 4473403 (1984-09-01), Wesala
patent: 4491607 (1985-01-01), Wesala

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