The manufacture of rubber goods : a practical handbook for the use of manufacturers, chemists, and others . * Fig. 74. somewhat similar to that shown in fig. 74. A piece of cottonfabric, as generally used for bed-sheeting, is now spread with whitedough until an even coating is obtained. Then when the next coatis put on, the perforated paper is put between the roller and thefabric (see fig. 75). The rubber-covered roller a of the spreading-machine carries the paper c through smoothly, and the perforations. Fig. 75 of the paper are shown in relief in the corresponding positionson tlie proofed cl
The manufacture of rubber goods : a practical handbook for the use of manufacturers, chemists, and others . * Fig. 74. somewhat similar to that shown in fig. 74. A piece of cottonfabric, as generally used for bed-sheeting, is now spread with whitedough until an even coating is obtained. Then when the next coatis put on, the perforated paper is put between the roller and thefabric (see fig. 75). The rubber-covered roller a of the spreading-machine carries the paper c through smoothly, and the perforations. Fig. 75 of the paper are shown in relief in the corresponding positionson tlie proofed cloth. The thicker the paper and the stiffer theconsistency of the dough, the higher will be the relief of thepattern. If a coloured dough—, a pink rubber dough—be usedfor tlie last coat instead of a white one, the perforated portions ofthe paper will be represented by pink patterns on a white ground,but only if the foUowing conditions are observed:—The spreading-knife must rest firmly on the partly-j^roofed material so as actually MANUFACTURE OF SOFT-RUBBER ARTICLES. 167 to press into the rubber roller a little. The spreading-machineshould then be run very slowly. By working in this way whathappens is that the coat of white rubber in front of the knife hastime to get softened, and that then the knife scrapes off a verythin layer of white rubber instead of spreading on a coat of pink,except in the places ovei the perforations of the sheet of paper,where the spreading-knife exerts no pressu
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Keywords: ., bookcentury1900, bookdecade1910, bookidmanufactureo, bookyear1919
