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Ajouter le résultat dans votre panier Affiner la recherche'Anti'-finish automotive leather - vision and contradiction / Brigitte Wegner in LEATHER INTERNATIONAL, Vol. 213, N° 4812 (07/2011)
Titre : 'Anti'-finish automotive leather - vision and contradiction Type de document : texte imprimé Auteurs : Brigitte Wegner, Auteur ; Gerhard Wolf, Auteur Année de publication : 2011 Article en page(s) : p. 38-40 Langues : Anglais (eng) Tags : 'Cuir automobile' 'Concept anti-finition' Antibruit 'Anti-salissant' Anti-abrasion 'Anti-vieillissement' 'Anti-hydrolyse' 'Anti-émission CO2' Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Car manufacturers have been paying increasing attention to automotive interiors in recent years because they are seeking to distance themselves from their competitors and to create a specific image for their brand. Consumers are encouraged to treat the interior of their vehicles like their own living room, with an individual design and high standards of comfort and serviceability.
As many different materials are used in automotive interiors leather is in competition with textiles, synthetics, Alcantara etc.
The question here is what distinghuishes leather from other materials, and the sample answer is the natural feel and natural appearance. It is this feature that is primarily responsible for leather's image as a luxury, premium-grade material. Leather will have to retain its natural character if it is to defent its position in the market, but this conflicts with the market's demands for other features such as resistance to abrasion, etc.
BASF's 'anti-finish concept for automotive interiors is an approach that makes it possible to pursue a long-term vision for automotive leather while, at the same time, fulfilling the short-term demands of original equipment manufacturers (OEMs). In finishing, the aim must always to be retain the natural character of the leather, ideally by dispensing with the finish altogether or, at least, by reducing the amount of finish or making it invisible. The underlying premise is that applying less finish or 'anti'-finish adds more value to the leather.
These demands are certainly not easy to satisfy, but they represent the current trend in the market for automotive leather in Europe and increasingly in North America and Asia. The goal of the leather industry has to be to develop 'anti'-finishes that will maintain and enhance the image of leather as a premium quality material. Improved seating comfort, a better feel and visual appearance are important arguments. Manfuacturers along the whole leather value chain should have a vital interest in developing this 'anti-finish' concept for automotive interiors. But as well as pursuing a long-term vision, manufacturers also need to pay attention to the short-term, daily demands of the OEMs.
Apart for the visual appearance and feel of the leather, most demands concentrate on physical fastness and serviceability. These demands can be summarised under the prefix 'anti', ie anti-squeak, anti-soiling, anti-hydrolysis and anti-abrasion. As shown in figure 2, this can be further extended and ecological demands can also be illustrated with 'anti' terms like anti emission, anti-RSL (restricted substance list), anti-CO2 and anti-deforestation. Anti-finish concept can be applied flexibily according to what is demanded. There is often no ideal solution but at least it illustrates the problems and unresolved issues and makes a solution easier to find.Note de contenu : - Anti-squeak
- Anti-soiling
- Anti-abrasion
- Anti-ageing and anti-hydrolysis
- Anti-emissionEn ligne : https://drive.google.com/file/d/1Q7YjCP0O9ZOIarH1UojiLFHIyToQTbJ6/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11932
in LEATHER INTERNATIONAL > Vol. 213, N° 4812 (07/2011) . - p. 38-40[article]Réservation
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Titre : Anti-finish concept - the way forward Type de document : texte imprimé Auteurs : Helfried Scheidl, Auteur ; Brigitte Wegner, Auteur Année de publication : 2013 Article en page(s) : p. 4-6 Langues : Anglais (eng) Catégories : Cuir dans les automobiles
Cuirs et peaux -- FinitionTags : 'Cuir automobile' 'Réduction des défauts' COV 'Aspect naturel' Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Looking at the on-going trends and development in the car industry, we expect cars in the future to be characterised by enhanced comfort, increased performance, reduced fuel and energy consumption,improved safety and lower emissions. Differentiation by design - especially in the interior, will become more important. Using leather for the car interior can help car makers create a natural and elegant look, while at the same time achieve easy maintenance. With the added-value that leather brings to the car interior, coupled with its premium image, demand for automotive leather has been growing strong. However, as raw material availability is not always keeping up with the growing demand, tanneries have to fall back on lower quality hides.
The best response to this trend is the "anti"-finish concept which describes the approach for BASF to the different requirements that leather tanneries have to fulfil - both in the short and long term). With tha "anti"-finish concept, BASF want to offer solutions to fulfil the increasing demands stemming from physical fastness, environment and comfort in the automotive industry. Innovative solutions have been developed and described during recent years by FASF on "anti-soiling", "anti-squeak" and "anti-hydrolysis"). Currently, three majors topics are under discussion, especially in east Asia and major OEMs, (Original Equipment Manufacturers) in Europe and North America : a) upgrading of low quality raw-material to fulfill increasing demand for automotive leather "anti-defects", b) a natural, non-plastic look and handl = "anti-covering" and c) low VOC emissions = "anti-emissions" as OEMs comes under increasing pressure to reduce not only the exterior emissions from the engine, but also the VOC emissions from all materials used in the car interior.Note de contenu : - Anti-defects
- Anti-covering
- Anti-emissionEn ligne : https://drive.google.com/file/d/1GwLhe-ADHKWpXJRaLHFyKBo6buRvDPOC/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35344
in LEATHER INTERNATIONAL > (11-12/2013) . - p. 4-6[article]Réservation
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Titre : Anti-finish concept - the way forward Type de document : texte imprimé Auteurs : Helfried Scheidl, Auteur ; Brigitte Wegner, Auteur Année de publication : 2014 Article en page(s) : p. 4-6 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir dans les automobiles Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Looking at the on-going trends and development in the car industry, we expect cars in the future to be characterised by enhanced comfort, increased performance, reduced fuel and nergy consumption, improved safety and lower emissions. Differentiation by design - especially in the interior, will become more important. Using leather for the car interior can help car makers create a natural and elegant look, while at the same time achieve easy maintenance. With the added-value that leather brings to the car interior, coupled with its premium image, demand for automotive has been growing strong. However, as raw material availability is not always keeping up with the growing demand, tanneries have to fall back on lower quality hides. Note de contenu : - Anti-defects
- Anti-covering
- Anti-emissionEn ligne : https://drive.google.com/file/d/1kACJSM1VKoaWnT0R-boZOIYN5MA-c-44/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39459
in LEATHER INTERNATIONAL > Vol. 216, N° 4837 (01-02/2014) . - p. 4-6[article]Réservation
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Titre : Recent findings in acetaldehyde emission from leather Type de document : texte imprimé Auteurs : Jochen Ammenn, Auteur ; Brigitte Wegner, Auteur ; B. Dannheim, Auteur Année de publication : 2017 Article en page(s) : p. 259-262 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Composés organiques volatils
Cuir dans les automobiles
Cuirs et peaux -- Analyse
EthanalL'éthanal (Nomenclature IUPAC), aussi appelé acétaldéhyde, aldéhyde acétique, éthyl aldéhyde ou oxoéthane, est un composé chimique, un aldéhyde de formule chimique CH3CHO.
Naturellement produit par les plantes, c'est un composant volatil trouvé à faibles doses dans les fleurs et feuilles du coton, dans les feuilles de chêne et de tabac, dans les fruits mûrs, le café et le pain frais. Il contribue à l’odeur du romarin, des jonquilles, de l’orange amère, du camphre, du fenouil, de la moutarde et de la menthe. Il servait autrefois de matière première de base pour la synthèse de l’acide acétique et de l’anhydride acétique. Il est utilisé comme agent de sapidité dans certaines margarines. C'est un produit toxique et cancérigène suspecté.
L'éthanal est un liquide incolore, volatil et miscible à l'eau et à presque tous les solvants organiques.
L'odorat humain le perçoit à très faible dose (0,05 ppm suffisent) comme une odeur fruitée (pomme verte) et il devient suffocant et piquant à forte teneur.
Il est très réactif et inflammable (point d'ébullition: 20,2 °C). Il peut vivement réagir avec, par exemple, des oxydants, halogènes , ammoniac et amines, alcools, cétones, phénols, anhydrides d'acide, sulfure d'hydrogène, cyanures. En contact avec le cuivre ou des alliages en contenant (bronze, laiton, ...), il peut former des composés explosifs. Il ronge le caoutchouc.
Comme tous les aldéhydes, c'est un réducteur. Son oxydation, très facile puisqu'elle peut même se produire au contact de l'air, donne de l'acide acétique, de l'anhydride acétique et de l'acide peroxyacétique instable susceptible de spontanément exploser.
L'hydrogénation de l'éthanal donne de l'éthanol.
Trois molécules d'acétaldéhyde peuvent former un paraldéhyde cyclique. Quatre molécules d'acétaldéhyde peuvent former un tétramère d'acétaldéhyde cyclique, le métaldéhyde.Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Acetaldehyde emissions are a significant challenge for automotive leather producing tanneries. This is especially true to meet the requirements for the Chinese market. Unlike formaldehyde, acetaldehyde is not used as a building block of tanning agents or auxiliaries and has rarely been traced in extraction assays in which the detection medium is water. However, it contributes to significant problems in emission tests for leathers in which the molecules are detected in the air. Until recently, few data points on acetaldehyde emissions were available, mostly on finished leather. In this publication, our new, facile method for the measurement of acetaldehyde emission will be introduced, evaluated, and exemplified with data across the whole process of leather making, from beam house to finished leather. With our new method we could show that the emissions generally decrease from skin to crust. Biochemical background for the high levels of acetaldehyde in skin will be given. Through the application of suitable scavengers, acetaldehyde emissions could be reduced significantly in automotive leathers. Note de contenu : - SCHEME : Acetaldehyde determination in a rotation evaporator
- FIGURES : 1. Degradation of threonine - 2. Acetaldehyde emission in five stages of the leather making process - 3. Acetaldehyde emission from finished leather over a time of ten month - 4. Acetaldehyde emission from wet blue and wet white - 5. Glutaraldehyde competes with an acetaldehyde (in red) being bound to a lysine via imine bond - 6. Scavenging of acetaldehyde with DNPH and acetylacetone - 7. Scavening of acetaldehyde in wet end and finishing - 8. Acetaldehyde emissions in leather process compared to apples and raspberriesEn ligne : https://drive.google.com/file/d/1_etRigilu7gR0ykb9QCosnQK-zmQdxY_/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28824
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXII, N° 8 (08/2017) . - p. 259-262[article]Réservation
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Titre : Sustainable automotive leather production Type de document : texte imprimé Auteurs : Gerhard Wolf, Auteur ; Brigitte Wegner, Auteur Année de publication : 2013 Article en page(s) : p. 8-10 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir dans les automobiles
Cuirs et peaux -- Finition
Durée de vie (Ingénierie)
Travail de rivière (cuir)Index. décimale : 675 Technologie du cuir et de la fourrure En ligne : https://drive.google.com/file/d/1uz9ubfvcV0wDyF2NHbmvYDbtqmw31y4R/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17228
in LEATHER INTERNATIONAL > N° Hors série (01-02/2013) . - p. 8-10[article]Réservation
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