METHOD FOR THE REMOVAL OF EXCESS PENETRANT AND SIMULTANEOUS DEVELOPMENT OF COLOR INDICATIONS
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Abstract
A METHOD FOR THE REMOVAL OF EXCESS COLORED LIQUID PENETRANT AND THE SIMULTANEOUS DEVELOPMENT OF COLOR INDICATIONS, THEREBY ELIMINATING BOTH THE SEPARATE STEP OF FIRST REMOVING EXCESS PENETRANT BY EMULSIFICATION AND WATER WASHING, AND THE SEPARATE SUBSEQUENT STEP OF APPLYING A DEVELOPER. THE PRESENT METHOD EMPLOYES A PIGMENTED AQUEOUS REMOVER-DEVELOPER COMPOSITION CONTAINING A NONVOLAITLE SURFACTANT AND PREFERABLY A GLYCOL-TYPE OF DEGELLING AGENT. THE REMOVER ITSELF SERVES TO REMOVE THE EXCESS OF COLORED LIQUID PENETRANT FROM THE SURFACE OF THE WORKPIECE WITHOUT REMOVING ANY PENETRANT ENTRAPPED IN SURFACE DISCONTINUITIES, AND AT THE SAME TIME A PORTION OF THE COMPOSITION REMAINS AS A RESIDUAL SURFACE FILM OF THE SURFACTANTS AND PIGMENT TO DEVELOP THE COLOR INDICATIONS.
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Current AssigneeMlot-Fijalkowski Adolf
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Original AssigneeMlot-Fijalkowski Adolf
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InventorsMLOT-FIJALKOWSKI ADOLF
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Application NumberUS04/788,344Time in Patent Office742 DaysField of SearchUS Class Current73/104CPC Class CodesG01N 21/91 using penetration of dyes, ...
