Method of producing embossed designs on surfaces
AssigneeStandex International Corporation
InventorsChrist H. Melonio, Gilbert P. Layfield
Life of this patent
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Abstract
A method for producing embossed designs on work surfaces such as on molds, rolls or dies. A photomechanically imageable transfer material is exposed to the design to be embossed. The material is developed and the acid resistant design material remaining on a backing sheet is mechanically transferred to the work surface by burnishing the back of the backing sheet. The surface is then etched and the acid resistant design elements removed so that the embossed work surface is ready for use.
Claims14
A method for engraving designs on complex curved work surfaces such as on molds or dies, said work surfaces being employed for producing embossed designs on the corresponding complex curved surfaces of products formed from deformable materials, said method comprising the steps of:
- preparing a master transparency from art work comprising the desired design;
- exposing transfer material to said design on said master transparency, said transfer material comprising an emulsion, the exposed portion of which is acid resistant upon exposure, said emulsion being on a backing sheet;
- removing unexposed areas of said emulsion to define discrete acid resistant image elements on said backing sheet;
- transferring said image elements from said backing sheet to said work surfaces;
- etching said work surfaces;
- and
- removing said image elements from said work surfaces.
A method for engraving designs on complex curved work surfaces such as on molds or dies, said work surfaces being employed for producing embossed designs on the corresponding complex curved surfaces of products formed from deformable materials, said method comprising the steps of:
- preparing a master transparency from art work comprising the desired design;
- exposing transfer material to said design on said master transparency, said transfer material comprising an emulsion, the exposed portion of which is tacky and acid resistant upon exposure, said emulsion being on a backing sheet;
- removing unexposed areas of said emulsion to define discrete tacky and acid resistant image elements on said backing sheet;
- mechanically directly transferring said image elements from said backing sheet to said work surfaces;
- etching said work surfaces;
- and
- removing said image elements from said work surfaces.
Dependencies are inferred from the claim text.