Multicavity silicone rubber moulds for mfg. gps. of coloured castings - for reproducing coloured or multicoloured mosaics, mural paintings, engraved works of art, stained glass windows, etc. in small numbers
摘要
<p>A series of gps. of coloured castings are made by using a try of silicone rubber on which the individual cavities are defined by integral walls obtained by casing the rubber on to mould pattern engraved in a soft material such as paraffin wax. Alternatively the pattern may be obtd. by selective etching of material hardened in response to irradiation via a photographic image. The rubber mould may be internally reinforced by e.g. glass fabric. The group of castings may be transferred to a common supporting panel of e.g. wood dressed with polyurethane resin.</p>
