spanish
To subject to spanishing, a printing process in which an ink is deposited on the bottoms and sides of depressions formed in a plastic material
spanish: deposit ink into recessed cavities in plastic
To spanish means to fill the sunken areas of an embossed or debossed plastic surface with ink, leaving the raised portions clean. The process works with thermoplastic sheets that have been mechanically or chemically etched to create a pattern of recessed depressions, typically 0.5 to 2 mm deep. The ink settles into these cavities and adheres to the bottom and side walls while the peaks remain uncoated, creating a two-tone decorative or functional finish.
The spanish process uses oil-based or solvent-based inks applied by flood coating, roller application, or immersion. The plastic substrate, usually polyvinyl chloride (PVC), polystyrene, or acrylic, must have sufficient surface porosity or tooth to retain the ink. After application, excess ink is wiped or squeegeed from the raised surfaces, leaving only the recessed areas colored. The depth and width of the depressions determine ink retention; too shallow and the ink washes away; too deep and removal of surface ink becomes difficult.
This finishing method appears commonly on rigid PVC architectural panels, decorative laminates, and embossed plastic trim. It adds contrast and visual depth without raising production cost significantly compared to painting the entire surface. The technique is also used on novelty items and consumer goods where the recessed pattern itself serves as the design element.
Common problems include ink bleeding into raised areas if the solvent penetrates the plastic edge, ink pooling in corners of very deep depressions where it resists removal, and uneven color if the substrate absorbs ink unevenly. The name derives from the Spanish origin of the decorative embossed plastic industry that popularized the finish in the mid-twentieth century, though the term is now generic across the trade.
Spanish differs from flood coating of flat surfaces because the selective deposition into recessed geometry requires careful ink viscosity and wiping pressure. It also differs from direct printing onto embossed plastic, which uses photographic screens or plates to deposit ink only in predetermined locations, rather than filling all depressions indiscriminately.