Some recent problems associated with the use of leather in footwear uppers / David Popplewell in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXIV (Année 1979)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXIV (Année 1979) . - p. 149-160 Titre : Some recent problems associated with the use of leather in footwear uppers Type de document : texte imprimé Auteurs : David Popplewell, Auteur ; A. W. A. Johnson, Auteur Année de publication : 1979 Article en page(s) : p. 149-160 Langues : Américain (ame) Catégories : Analyse de dommages (matériaux) Cuirs et peaux -- Détérioration Tige de la chaussure Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In our experience in running testing laboratories for footwear and footwear materials, both here in North America and before that in the U. K., leather is rarely a problem material. We do, however, find from time to time sporadic faults, often only associated with one tanner or one shoe manufacturer. Many of the complaints we have to deal with are associated with a deterioration in appearance, for example cracking, flaking, and peeling of the finish, cracking of the actual leather, staining of various sorts and surface mechanical damage of the scuff/abrasion type. Therefore we will confine our remarks to these areas. In this paper we also hope to give you an idea of what problems can occur and how we consider that they have been caused. In some instances we suspect that they can result from slight changes in a tanning process which may be outside the tanner's control or may even have been made deliberately, the tanner being unaware of the possible adverse effects to the user. The can also, however, result from ashoe manufacturer's actions unbeknowingly causing some deterioration in the physical properties of an originally satisfactory material. We will also, whenever possible, describe a test method which can be used either to assure product quality, to monitor the effect of process changes, or to evaluate the property complained of in returned goods. Note de contenu : - Abrasion resistance of the finish : Resistance to dry rubbing - Resistance to wet rubbing - The effect of solvents - Assessment of the results - Adhesion of finish - Resistance of a finish to flex cracking - Surface wrinkling or pipiness - The effect of a shoe room spray on a tanner's finish - Pigment migration - Staining of feet and socks - The effect of rain - Salt damage - Grease spue - An optical effect - Perspiration damage - Chromium migration - Scuff damage - Snag/abrasion - Table 1 : The effect of shoe-room finishes En ligne : https://drive.google.com/file/d/1Zxwjigm5eIICm6lQ50g85r7lt5fuI8oj/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37218 [article]

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