Method and composition for paint masking

Details Method and composition for paint masking Method and composition for paint masking

1996-03-14

1997-12-16

Beck, Shrive

Coating processes

Nonuniform coating

Mask or stencil utilized

427154, 427272, 427421, B05D 132, B05D 102, B05D 500

Patent

active

056982640

ABSTRACT:
Novel compositions and methods are provided for forming masks used in air brash painting. The masking compositions used in this invention are liquids as applied and are hardenable into a friable paint masking layer. The preferred compositions of this invention are comprised of a hydratable binder, such as plaster of Paris, an inert filler, such as calcium carbonate, and water. The amount of the filler is selected relative to the amount of the binder to substantially weaken and make friable the resulting hardened layer. In the method of this invention the composition is applied to the area of a substrate to be masked. The applied layer if desired is shaped with a tool to provide details in the resulting mask. The layer is then hardened to form a brittle friable masking layer directly adhered to surface of the substrate. The substrate is then airbrush painted. The mask is removed by fracturing the mask and removing the resulting particles.

REFERENCES:
patent: 4778832 (1988-10-01), Futami et al.
patent: 5186978 (1993-02-01), Woodhall et al.
patent: 5308647 (1994-05-01), Lappi

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