The manufacture of rubber goods : a practical handbook for the use of manufacturers, chemists, and others . I—1 g22 g 10 0 0 CO r-H ,-H 00 l-H CD10 00CO .—1 r-H1—1 g^2 2 g CO r-i r-H CM 10 Ingredients added, per cent. 4J 4J -(-> CO 03 aJ , 14 2IO RUBBER MANUFACTURE. We have now to consider the third step in the manufacture ofebonite, namely, the making-up of the various articles, and as amatter of fact ebonite sheet is, in the case of many articles, thematerial with which the actual preparation of those articles the following paragraphs, therefore, the process of manufactu
The manufacture of rubber goods : a practical handbook for the use of manufacturers, chemists, and others . I—1 g22 g 10 0 0 CO r-H ,-H 00 l-H CD10 00CO .—1 r-H1—1 g^2 2 g CO r-i r-H CM 10 Ingredients added, per cent. 4J 4J -(-> CO 03 aJ , 14 2IO RUBBER MANUFACTURE. We have now to consider the third step in the manufacture ofebonite, namely, the making-up of the various articles, and as amatter of fact ebonite sheet is, in the case of many articles, thematerial with which the actual preparation of those articles the following paragraphs, therefore, the process of manufactureof such sheet is described in detail. The manufacture must becarried out in shops absolutely free from dust, shops on the upperfloor being most suitable for the purpose. In order to prepare ebonite sheet the following process, which isfound to give good results in every way, is employed. The sheet inquestion is not rolled up from separate layers to the required thick-ness on a heated bench, but is doubled on the doubling calendersdirect from sheet h mm. thick, a compact sheet free from blisters. being thus produced. The sheet is then taken for further manipu-lation to the hot-bench, the ordinary form of which, shown infig. 95, has long been in use. This hot-bench consists of a cast-iron plate, planed perfectly smooth and provided with interiorchannels for the purpose of heating it uniformly by means ofsteam. The chief use of the hot-plate is to warm up the rubbersheet so as to cause it to shrink, and prevent its shrinking duringvulcanisation, and so to produce a uniform sheet. A second purposeserved by the plate is, however, that of a bench on which the sheetis coated with tinfoil. This is done by means of a heavy ironroller worked by two men, the roller making the sheet uniform inthickness and homogeneous in texture, while at the same timeforcing the air out from between the tinfoil and the rubber. Bythis means the tinfoil is hermetically sealed on to the rubber atthe
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Keywords: ., bookcentury1900, bookdecade1910, bookidmanufactureo, bookyear1919
