| Titre : |
A versatile method for measuring the water vapor absorption of leather and other sheet materials |
| Type de document : |
texte imprimé |
| Auteurs : |
Ludwig Seligsberger, Auteur |
| Année de publication : |
1972 |
| Article en page(s) : |
p. 53-68 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Chaussures
Cuir
Esters de cellulose
Humidité -- Absorption
Hydrophobie
Matériaux poreux
Mesure
Vapeur d'eau
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The ability of footwear components to absorb perspiration has been widely recognized as essential for comfort. Past methods of measuring this property stopped short of making the distance between the source of moisture and the test material as small as it actually is within a shoe because of the ever present possibility of direct contact between the two parallel surfaces. Earlier attempts to overcome this condition by the use of a plastic mat or of insect screens are described. The problem was finally solved by using a hydrophobic microporous cellulose ester filter, 0.15 mm. thick, which allowed water vapor, but not liquid water, to pass from the moist felt simulating the skin surface to the materials to be evaluated for their absorptive capacity. The procedure that was developed takes into account the fact that this property is more critical for materials used in footwear bottoms than for those in uppers. Most of the work reported, therefore, was done on leather and nonleather insoles which were placed on socks or on materials used for lining shoes. The results are primarily presented in charts illustrating the moisture pickup over five-hour periods. The degree of realism possible by the new method is discussed by comparing it with results of actual wear tests published elsewhere. |
| Note de contenu : |
- Results by procedure finally adopted
- Table 1 : Relative humidity of atmosphere in aparatus for measuring water vapor absorption in the presence of four insole specimens, 4 mm. thick
- Table 2 : The water vapor absorption of insole/sock combinations under light and heavy pressure
- Table 3 : The effect of sealing the edges on the water vapor absorption of insole leather
- Table 4 : Influence of temperature and barriers on water vapor absorption of insole leather
- Table 5 : Distribution of moisture between insole and sock on a weight basis after one and fibe hours
- Table 6 : Water vapor absorption of shoe bottoms in wear trial reporte by satra |
| En ligne : |
https://drive.google.com/file/d/1zVuOVNdgIhlJ2j_ozsEJCuEOQpWMyZtn/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41540 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXVII (Année 1972) . - p. 53-68
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A versatile method for measuring the water vapor absorption of leather and other sheet materials in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXVII (Année 1972)
