| 摘要 |
The inventors disclose a novel method of imprinting on a soap bar or soap sheet. This method comprises steps of providing printed matter on the surface of said soap and isolating said surface from water contact, such that said printed matter is partially or substantially water-insoluble. Moreover, the invention presents a cost effective soap bar or soap sheet having printed matter on a surface thereon; said surface is protected by at least one protective layer which is partially or substantially water-insoluble. The protective layer can be a varnish layer printed on transfer paper and then glued or otherwise affixed to the soap as a label. It can also be a wax layer, wherein the printed matter is either printed on the soap before coating thereof, or be part of a varnish label to be glued to the soap, which is then coated by a wax layer. The printing color is durable in water or other predetermined diluents and in water-soap solution.
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