Corrected or non-correted grain ? FILK-QMA-1201 - a method to evaluate finished leather / Haiko Schulz in WORLD LEATHER, Vol. 18, N° 2 (04/2005)  

[article]  inWORLD LEATHER > Vol. 18, N° 2 (04/2005) . - p. 41-44 Titre : Corrected or non-correted grain ? FILK-QMA-1201 - a method to evaluate finished leather Type de document : texte imprimé Auteurs : Haiko Schulz, Auteur ; Michael Meyer, Auteur Année de publication : 2005 Article en page(s) : p. 41-44 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Finition Echantillonnage Evaluation Microscopie Surfaces -- Analyse Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A new method is described and illustrated, which enables differentiation between finished leathers that have been corrected or not. The method is very senstive, and can readily detect leathers that have only been lightly corrected, even when the leathers have been slightly snuffed. Note de contenu : - Sample preparation - Sample evaluation - Microscopic analysis of the grain - Microscopic analysis of the back-side of the finish - Microscopic analysis of the cross-section - Panel 1 : Definitions - Fig. 1a : Leather surface after complete removal of the finish layer. - Fig. 1b : Leather surface after incomplete removal of the finish layer. - Fig. 2a : Back-side of the finish layer after removal from a corrected grain leather. No fibres remaining in the finish. - Fig. 2b : Back-side of the finish layer after removal from a corrected grain leather. Fibres left sticking in the finish. - Fig. 3 : Leather surface of a full grain leather after successful removal of the finish. The arrows indicate the damage-free sickle- shaped pellicles and the fine structure. - Fig. 4 : Surface of a lightly snuffed leather after removal of the finish. Parallel cut/grind marks are a clear characteristic of correction. - Fig. 5 : Surface of a buffed leather after removal of the finish. Truncated hair openings are observed as well as grind marks. - Fig. 6 : Surface of a heavily buffed leather after removal of the finish. Hair openings disappear in a surface with a suede-like effect. - Fig. 7 : Surface of a crust leather after light abrasion with buffing paper. Fine cut/grind marks can still be clearly observed. - Fig. 8 : Back-side of a finish from a full grain leather. The mirror image of the typical grain surface is clearly observed as a result of the base coat flowing into the hair follicles. - Fig. 9 : Back-side of a finish from a leather that was slightly corrected. The cut/grind marks are clearly visible. - Fig. 10 : Back-side of a finish from a corrected grain leather. The cut/grind marks are clearly visible as well as the impression of leather fibres that remained adhering to the finish. - Fig. 11 : Back-side of a finish from a leather that was stucccoed and corrected. The leater substrate was digested by enzymatic treatment. - Fig. 12 : Cross-section of leather that was not corrected. The curvature of the hair openings is completely preserved. - Fig. 13 : Cross-section of a corrected leather. The curvature of the hair openings has been lost. They appear truncated,ending at the boundary layer in an acute angle. Base coat penetration into fibre network. En ligne : https://drive.google.com/file/d/1UoFYIeR41eUvEfOECWGfc0ZTIU6kuUYu/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32338 [article]

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Dauerfaltverhalten von leder / Haiko Schulz in INDUSTRIE DU CUIR (IDC), N° 2008/05 (10-11/2008)

[article]  inINDUSTRIE DU CUIR (IDC) > N° 2008/05 (10-11/2008) . - p. 32-35 Titre : Dauerfaltverhalten von leder Type de document : texte imprimé Auteurs : Haiko Schulz, Auteur ; Bernd Schrödelsecker, Auteur Année de publication : 2008 Article en page(s) : p. 32-35 Langues : Allemand (ger) Tags : Cuir  Plissement Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2540 [article]

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No need for unwanted emissions / Andrea Hanke in KUNSTSTOFFE INTERNATIONAL, Vol. 97, N° 11/2007 (11/2007)

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 97, N° 11/2007 (11/2007) . - p. 56-58 Titre : No need for unwanted emissions Type de document : texte imprimé Auteurs : Andrea Hanke, Auteur ; Jürgen Arnold, Auteur ; Petra Krajewsky, Auteur ; Haiko Schulz, Auteur Année de publication : 2007 Article en page(s) : p. 56-58 Langues : Anglais (eng) Index. décimale : 668.4 Plastiques, vinyles Résumé : Effect of process parameters - Not only the waste gases from burning fuel but also the emissions of materials in the interior of vehicles have been reduced in recent years. Nevertheless there is still a lot to do. Compounding and processing by injection molding can have a considerable effect on the emission characteristics of plastics. Studies of the key parameters reveal ways of reducing emissions. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6686 [article]

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What is the leather smell ? / Haiko Schulz in LEATHER INTERNATIONAL, Vol. 213, N° 4814 (09/2011)  

[article]  inLEATHER INTERNATIONAL > Vol. 213, N° 4814 (09/2011) . - p. 40-41 Titre : What is the leather smell ? Type de document : texte imprimé Auteurs : Haiko Schulz, Auteur Année de publication : 2011 Article en page(s) : p. 40-41 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir -- Odeurs Olfactométrie Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : One of leather's important characteristics is its smell. In contrast to synthetics the leather smell is a desirable feature and regarded as an attribute of authenticity by customers. Michaela Schroepfer and Haiko Schulz, FILK, Freiberg, Germany, and Michael Czerny and Peter Schieberle for the German Research Centre for Food Technology, Freising, carried out research into the smell of five leathers from different applications. Note de contenu : - Odour identification - Results : Identification - Quantification and aroma values En ligne : https://drive.google.com/file/d/1xv_VhMt0i0IH67_9JRqEobFPHlcipB2W/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11919 [article]

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