Coating processes – Nonuniform coating – Applying superposed diverse coatings or coating a coated base
Patent
1982-03-30
1984-04-17
Lawrence, Evan K.
Coating processes
Nonuniform coating
Applying superposed diverse coatings or coating a coated base
51310, B05D 312
Patent
active
044435002
ABSTRACT:
A method for forming a sgraffito type design in a clay form comprising the steps of: (1) applying a binder to a leather hard clay form; (2) applying a decorative coating with a binder to the leather hard clay form; (3) force drying the clay form to strengthen the form, increase the adherence of the decorative coating and form a tough bond between the clay and the decorative coating to withstand subsequent application and removal of an adhesively backed stencil; (4) adhering the stencil to the surface of the clay form; (5) sandblasting through opening in the stencil to form a design or pattern in the clay form; (6) drilling of holes if applicable to the product; (7) removing the stencil; and (8) firing of the clay form to produce the finished ceramic form.
REFERENCES:
patent: 1784495 (1930-12-01), O'Neil
patent: 2106979 (1938-02-01), Kavanaugh
patent: 2358710 (1944-09-01), Helgeson
patent: 3579926 (1971-05-01), Caspari
"Ceramic Glazes" by _Cameron G. Harman--Mar. 1973, pp. 158 & 159--published by Cahners Books of Boston, Massachusetts.
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