Method for removing a phosphor layer from a support surface

Details Method for removing a phosphor layer from a support surface Method for removing a phosphor layer from a support surface

1983-08-18

1985-05-14

Beck, Shrive P.

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

427 68, 427421, B32B 302

Patent

active

045172242

ABSTRACT:
In a method for preparing a luminescent screen which includes optionally depositing a light-absorbing matrix upon a support, depositing a phosphor-and-binder layer on the support, and then coating the phosphor layer with a film of organic polymeric material, the steps for salvaging the support and matrix, if present, substantially undisturbed while substantially entirely removing the overlying material. In the method, the overlying material is contacted with an aqueous hydroxide-and-peroxide solution until the binder and film are at least partially solubilized. Then, the overlying material is substantially entirely flushed away by flushing, sloshing, or low-pressure spraying with an aqueous medium.

REFERENCES:
patent: 2710286 (1955-06-01), Zachariason
patent: 3558310 (1971-01-01), Mayaud
patent: 3788846 (1974-01-01), Mayaud et al.
patent: 4049452 (1977-09-01), Nekut
patent: 4165396 (1979-08-01), Calamari, Jr.

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