Digital camouflage printing / Tony Naschberger in TECHNICAL TEXTILES, Vol. 67, N° 1 (2023)  

[article]  inTECHNICAL TEXTILES > Vol. 67, N° 1 (2023) . - p. 48-50 Titre : Digital camouflage printing Type de document : texte imprimé Auteurs : Tony Naschberger, Auteur Année de publication : 2024 Article en page(s) : p. 48-50 Langues : Multilingue (mul) Catégories : Camouflage (science militaire) Impression numérique Masquage Textiles et tissus imprimés Index. décimale : 677 Textiles Résumé : The future belongs to digital camouflage printing. Inkjet has a much lower negative environmental impact in comparison to screen printing (color matching; color preparation ; dye leftovers; system washing, etc.), unlimited repeats and number of colors are possible (no minimum quantity ; fast sampling), less know-how in comparison to traditional printing is needed and in future everything will be digital. Note de contenu : - What is camouflage printing ? - Camouflage printing for the military sector - Camouflage printing requirements - Adjustement of IRR values - Challenges and solutions in digital camouflage printing - Digital printing and its position in the camouflage market - Comparison of digital camouflage to screen printing - Fibers, classes of dyes and typical applications - Fig. 1 : Wavelength classification - Fig. 2 : Infrared signature of different materials - Fig. 4 : Example of camouflage print - Fig. 5 : Difference between "good" and "bad" IRR signatures as seen through a night vision system - Table 1 : Optimized Tanatex recipie with urea substitute on cotton En ligne : https://drive.google.com/file/d/1LEiRuv9Q78mkpGoZx6J0Fv0VutiP5MbM/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40700 [article]

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Improved chrome utilisation in chrome tanning / William C. Prentiss in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 66 (Année 1982)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 66 (Année 1982) . - p. 32-34 Titre : Improved chrome utilisation in chrome tanning Type de document : texte imprimé Auteurs : William C. Prentiss, Auteur ; I. V. Prasad, Auteur Année de publication : 1982 Article en page(s) : p. 32-34 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Déchets -- Réduction Masquage Mesure pH Produits chimiques -- Consommation -- Réduction Tannage au chrome Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In a recent article Smith notes that emphasis on environment, health, and energy conservation has led to new studies to increase the efficiency of chromium usage in a tannery. He cites four basic concepts for increasing efficiency, these being improved uptake, recycling chrome liquors, precipitation and recovery of chrome for reuse and alkaline incineration. Utilising various techniques, all of the first three are practical commercially, while the fourth is being studied seriously from both chrome recovery and solid waste disposal perspectives. Since the first disclosure of a practical chrome tanning process in 1858 there have been literally hundreds of publications about the chemistry and technology of chrome tanning. It is estimated that about half relate to improved chrome uptake, but they can be classified into four main categories. These are control of pH, selection of masking agents, control of time and temperature, and control of float (or concentration). pH control does not necessarily mean increasing the pH at the end of chrome tanning by adding more neutralising agent. It does include employing more modern techniques such as adding magnesium oxide, a sparingly soluble basifying agent, for control of neutralisation ; or a combination of conventional and self-basifying chrome ; or even a chelated chrome added immediately following the bate. Selection of masking agents can be very critical. The more conventional formate and acetate masking can lead to more rapid arome penetration, while the more complex, polybasic acids which affect the size of the chrome complex can decrease penetration but improve fixation. Time, temperature and control of float are all rational and interrelated. Since chrome tanning is both a physical (diffusion) and a chemical (reaction) process which ultimately leads to an equilibrium situation, any condition which achieves equilibrium more rapidly or at equilibrium increases the quantity of total fixed chrome relative to the total unfixed chrome will improve uptake. The conditions are, of course, low float, higher temperature and longer running times. It is now possible to add a fifth category to the techniques for improved chrome uptake. Although currently there is insufficient evidence to establish the mechanism of action, it is apparent that a class of chemicals has been discovered, broadly defined as amine salts, which shifts the equilibrium of chrome between stock and float such that more chrome is exhausted in the stock and less remains in the exhaust liquor. This paper describes the results of our laboratory programme to determine the effect of process variations and define an optimum process for tannery trials. The results of confirmatory tannery trials are also reported. Note de contenu : - EXPERIMENTAL : Tanning process - Measurements - RESULTS AND DISCUSSION : Effect of reduced chrome - Effect of chrome exhaust aid level - Effect of pickle pH - Effect of masking - Effect of stock pH after neutralisation - Addition of exhaust aid with the chrome compared with addition before the chrome - Proposed optimised process En ligne : https://drive.google.com/file/d/1Xq6Amudrel-rlxTG9vUNEZYcPehDW-wa/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34208 [article]

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Innovations in skin camouflaging techniques : Where are we scientifically ? / Emma Derbyshire in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 41, N° 6 (12/2019)  

[article]  inINTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 41, N° 6 (12/2019) . - p. 526-533 Titre : Innovations in skin camouflaging techniques : Where are we scientifically ? Type de document : texte imprimé Auteurs : Emma Derbyshire, Auteur Année de publication : 2019 Article en page(s) : p. 526-533 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Barrière cutanée Dermatoses Formulation (génie chimique) -- Stabilité Masquage Peau -- Anatomopathologie Index. décimale : 668.5 Parfums et cosmétiques Résumé : - Objective : Cutaneous disorders can impact on the psycho-social well-being of children and adults alike, which has been reviewed elsewhere (Body Image 27, 2018 and 98). The present review sets out to evaluate progressions in skin masking and camouflaging techniques together with evaluating the efficacy of these. There does not appear to have been any recent reviews about innovations in skin camouflaging techniques. - Methods : Using the National Centre for Biotechnology Information PubMed database, a search was made for all studies published between 2000 and 2019 that met defined inclusion criteria. A total of seven relevant publications were identified. - Results : Of the seven studies identified, skin camouflaging improved quality of life in three studies and reduced anxiety, depression and social isolation in others. Of the camouflaging methods used, liquidized simulated second skin technology (Microskinâ„¢) appears to look particularly promising. This method of colour matching and a spray/stippling application uses a technology that binds to the epidermis of the skin helping to overcome previous concerns about the colour, coverage and application of camouflage and masking bases. Two studies showed that this innovative mode of camouflaging raised confidence, feelings of happiness and social experiences in children and adolescents with burn scarring. Very few studies reported drawbacks of camouflaging techniques, with limited colour matches and ‘itching’ appearing to be the main shortcomings. New technologies now appear to be addressing these. - Conclusion : Results show that there is wide variation in the quality and modes of skin camouflaging. Of the methods used, simulated second skin technology appears to be an important and effective therapy for individuals with cutaneous skin disorders. Training schemes along with increased awareness of this technique must now be communicated to medical professionals who come into contact with children and adults who could benefit physically, psychologically and socially from this therapy. Note de contenu : - Strategy for literature search - Inclusion and exclusion criteria - Results : Camoufling techniques - Efficacy - Other findings - Discussion - Limitations and future research DOI : 10.1111/ics.12575 En ligne : https://drive.google.com/file/d/1ktFDjf4mUSEWhJPxn_nvdNMbjvPXsFep/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33661 [article]

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Masking can be done in a different way in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 16, N° 2 (2023)  

[article]  inINTERNATIONAL SURFACE TECHNOLOGY (IST) > Vol. 16, N° 2 (2023) . - p. 32-33 Titre : Masking can be done in a different way Type de document : texte imprimé Année de publication : 2023 Article en page(s) : p. 32-33 Langues : Anglais (eng) Catégories : Masquage Photoréticulation Revêtements protecteurs Index. décimale : 667.9 Revêtements et enduits Résumé : The use of a ligh-curable masking material opens up significant advantages for a German engine manufacturer. Instead of manually masking the areas of the components that are to be protected from certain surface finishing steps, they are now temporarily sealed with the protective coating automatically, quickly and with high precision. Note de contenu : - High demand, complex shapes - Automated process - Beyong the masking DOI : https://doi.org/10.1007/s35724-022-1139-5 En ligne : https://drive.google.com/file/d/140WGUhUiysiywXlXmSCaVLQf5HuVBHMJ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41414 [article]

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The kinetics of chrome tannage-V. A possible explanation of the mode of action of glucose reduced chrome liquors / Stanley Briggs in JOURNAL OF THE SOCIETY OF LEATHER TRADES' CHEMISTS, Vol. 50, N° 4 (04/1966)

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TRADES' CHEMISTS > Vol. 50, N° 4 (04/1966) . - p. 139-143 Titre : The kinetics of chrome tannage-V. A possible explanation of the mode of action of glucose reduced chrome liquors Type de document : texte imprimé Auteurs : Stanley Briggs, Auteur Année de publication : 1966 Article en page(s) : p. 139-143 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Analyse Liqueurs de tannage Masquage Tannage au chrome Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Chrome tannages on hides in the i.e.p. condition show that the period of uptake and the distribution of chromium in the leather are favourably influenced by the use of mixtures of organic acid masking salts, rather than by the use of any one alone. Note de contenu : - Table XXIV : Variation in analysis of leather by type of masking addition - Table XXV : Tannages of i.e.p. hide at 33% basicity and 0.33 gr. eq. masking agent per Cr 100% float [Cr2O3] a = 2.6 - Table XXVI : Tannages of i.e.p. hide at 42% basicity and 0.33 gr. eq. masking agent per Cr 100% float [Cr203] o = 2.6 - Table XXVII : Average effect of masking salts used alone or mixed Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35681 [article]

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Upgrading keeping leather's elegance / M. Pasquet in WORLD LEATHER, Vol. 18, N° 8 (12/2005 - 01/2006)  

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