Process for applying identification to objects made of porous ma

Details Process for applying identification to objects made of porous ma Process for applying identification to objects made of porous ma

1989-08-30

1990-09-04

Silbaugh, Jan H.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156155, 156631, 156632, 156633, 264133, 264139, 264162, 264233, 264246, 427154, 427272, 427273, 427276, 427282, 427287, 427289, B05D 132, B05D 300, B29C 3912, B44C 122

Patent

active

049541927

ABSTRACT:
A process for applying a permanent filled engraved identification to the surface of an object such as a paving brick which is made of porous material. The process includes the steps of coating the surface of the object on which the identification is to be applied with a water soluble sealant and allowing the coating to dry; removably adhering a stencil, which has been prepared by perforating a stencil material to provide an opening defining the identification to be applied, to the dry coated surface; applying a stream of material to the adhered stencil opening to remove the soluble sealant coating and a portion of the porous material to a desired depth to provide an engraved identification in the object; removing the stencil from the object; applying a flowable filler material that will set in and fill the engraved identification; allowing the filler material to set; and applying water to the object for a period of time sufficient to dissolve the water soluble sealant and cause any of the filler material which is not in the engraved identification to be released and removed from the surface of the object.

REFERENCES:
patent: 667898 (1901-02-01), Wilcke
patent: 3117403 (1964-01-01), Jack et al.
patent: 3463653 (1969-08-01), Letter
patent: 4316766 (1982-02-01), Levin et al.
patent: 4781792 (1988-11-01), Hogan

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