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|a (KIS3G)CLAS02vtls000012069
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|a SNKORKD
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| 100 |
1 |
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|a Haines, Betty M.
|4 aut
|9 1071743
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| 245 |
1 |
0 |
|a Books and Bindings
|b Bookbinding Leathers: The structure of leather
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| 520 |
3 |
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|a Summaries. Leathers suitable for the binding of books are prepared from the skins of cattle, calf, goat and pig. These skins have a similar basic structure consisting of protein fibres arranged in bundles which interweave in a three-dimensional manner. The structure is not homogeneous; the largest fibre bundles are to be found in the central region or the corium, but these subdivide and become finer as they approach the surface of the skin. The hairs are to be found in a distinct layer - the grain layer. Each species of animal has a distinctive skin structure which varies in thickness, dimension of constituent fibre bundle and proportion of total thickness occupied by the grain layer. The fibre weave is most compact over the back of the animal and least compact over the belly and axillae. The strength of a leather is dependent not only on its total thickness but on the proportion of corium tissue present and the frequency with which the corium fibres interweave. In young animals the skin is thinner and fibre bundles smaller in dimension, but the ratio of grain layer to full thickness is the same as in more mature animals. Consequently a thinner leather retaining its full thickness is likely to be stronger than a thicker leather shaved down to the same substance. The variation in skin structure found in different animal types permits the production of leather with widely different properties. The comparison of leathers from different skins will indicate why some skins are stronger than others in relation to their thickness, and distinguish the different properties which are related to the different animals from which the skins are taken.
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| 773 |
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|t Conservation of Library and Archive Materials and the Graphic Arts
|b first published
|d Kent: Butterworths 1987, s. 239-252
|z ISBN 0-408-01466-0
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| 856 |
4 |
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|u http://www.viks.sk/chk/conservation_book_239_252.doc
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| 910 |
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|a memoriask
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|c 1762455
|d 1764385
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