Elastomerics Volume 10

Elastomerics Volume 10

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 edition. Excerpt: ...of flawless, molded rubber goods. On the other hand, I know of twenty in America. This seems a hard charge, but it is painfully true, and the worst part is that most British manufacturers are not acquainted with the problem, and do not appear to know what perfect rubber molding really is, ' and they have no ideal to Work up to. I think that some of their difficulties are as follows, but any rubber manufacturer will know them better than I do., I suggest that too often the wrong kind of mold is used. As the manufacturer too frequently has not the necessary support of the selling side of the industry, he plays safe by working with a cheap mold. For a fine product, I have no use for anything but the best finished steel mold. Cast iron, aluminum and white metal may be suitable for cheap work, . but the product of a well-made steel mold improves with working and justifies its first cost. Some of us have seen hot cured moldings from glass and porcelain molds, but though the finish from these is superb, they are doubtless out of the running for practical work, with a few exceptions. It is certain that many a good line has suffered a premature death because the extra first cost of good steel molds has been shirked. I know of several instances to prove this. Some other troubles may be unsuitable slow-flowing mixes, incorrect amount of charge, and defective cleaning of molds. I believe that many manufacturers mix their compounds for work with hot molds, and others place their blanks in cold molds; the difference is seen in the product. The reason for this criticism is that it is a well-established fact that a properly designed, clean colored, well-finished molding, free from bloom, flaw or bad trimming, pleases the customer and does the...show more

Product details

  • Paperback | 234 pages
  • 189 x 246 x 12mm | 426g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236923448
  • 9781236923448