Procter memorial lecture collagen, 1891-1977 : retrospect and prospect / Alan Gordon Ward in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 62, N° 1 (01-02/1978)

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 62, N° 1 (01-02/1978) . - p. 1-13 Titre : Procter memorial lecture collagen, 1891-1977 : retrospect and prospect Type de document : texte imprimé Auteurs : Alan Gordon Ward, Auteur Année de publication : 1978 Article en page(s) : p. 1-13 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Collagène Cuirs et peaux Index. décimale : 675 Technologie du cuir et de la fourrure Note de contenu : - 1895-1925. The origins of collagen research - 1925-1955. Laying the foundation - 1955-1977. The edifice takes shape - Table 1 : Amino acid composition of collagen - Table 2 : Molecular data for the citrate (pH 4.3) soluble carp swim bladder collagen by various methods - Table 3 : Collagen types Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35217 [article]

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Procter memorial lecture collagen, 1891-1977 : retrospect and prospect / Alan Gordon Ward in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 62, N° 1 (01-02/1978)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 62, N° 1 (01-02/1978) . - p. 1-13 Titre : Procter memorial lecture collagen, 1891-1977 : retrospect and prospect Type de document : texte imprimé Auteurs : Alan Gordon Ward, Auteur Année de publication : 1978 Article en page(s) : p. 1-13 Langues : Anglais (eng) Catégories : Collagène Cuirs et peaux Index. décimale : 675 Technologie du cuir et de la fourrure Note de contenu : - 1895-1925. The origins of collagen research - 1925-1955. Laying the foundation - 1955-1977. The edifice takes shape - Table 1 : Amino acid composition of collagen - Table 2 : Molecular data for the citrate (pH 4.3) soluble carp swim bladder collagen by various methods - Table 3 : Collagen types En ligne : https://drive.google.com/file/d/1yE8wCpPBN-DIkRrB54MfnIZjjmTgOcs4/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40485 [article]

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Procter memorial lecture collager, 1891-1977 : retrospect and prospect / Alan Gordon Ward in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 61 et 62 (Années 1977 et 1978)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 61 et 62 (Années 1977 et 1978) . - p. 1-13 Titre : Procter memorial lecture collager, 1891-1977 : retrospect and prospect Type de document : texte imprimé Auteurs : Alan Gordon Ward, Auteur Année de publication : 1978 Article en page(s) : p. 1-13 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Collagène Cuirs et peaux Index. décimale : 675 Technologie du cuir et de la fourrure Note de contenu : - 1895-1925. The origins of collagen research - 1925-1955. Laying the foundation - 1955-1977. The edifice takes shape - Table 1 : Amino acid composition of collagen - Table 2 : Molecular data for the citrate (pH 4.3) soluble carp swim bladder collagen by various methods - Table 3 : Collagen types En ligne : https://drive.google.com/file/d/1yE8wCpPBN-DIkRrB54MfnIZjjmTgOcs4/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35211 [article]

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A simple approach to leather process investigation / P. Laight in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 58 (Année 1974)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 58 (Année 1974) . - p. 88-99 Titre : A simple approach to leather process investigation : Part 1 - Standardisation of the leather manufacturing process Type de document : texte imprimé Auteurs : P. Laight, Auteur ; Alan Gordon Ward, Auteur ; S. Wolstenholme, Auteur Année de publication : 1974 Article en page(s) : p. 88-99 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Analyse Cuirs et peaux -- Propriétés mécaniques Essais (technologie) Essais dynamiques Mesure Poids Procédés de fabrication Surfaces (Physique) Tannage Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A standard process for the production of chrome side leather has been developed, based on studies of individual operations as well as on a critical study of the complete process selected. Details of the equipment evolved for the process, the process conditions and the chemicals employed are outlined. Preliminary results are reported for weight and area variation of hide segments at the various stages of the process. Physical tests have been carried out at selected locations on the segments of unfinished leather. The process finally chosen provides a satisfactory basis from which to study selected process variations. Note de contenu : - Development of the standard process - Process details : Chemicals and conditions - Techniques - Test method details : Weight and area measurement - Subjective and objective physical testing - Chemical tests - Results : Raw material variations - Weight and area variations during processing - Implications - Chemical results - Objective and subjective physical results - Table 1 : Conditions used in testing tensile samples (instrument : Instron 1112 chart recorder) - Table 2 : Average hide weights and areas - Table 3 : Weight variations after pre-tannage sub-process - Table 4 : Weight variations after tannage and post-tannage sub-processes - Table 5 : Weight after brine pile as % of washed weight - Table 6 : Analytical results - Table 7 : Linear extension (see also table IX) - Table 8 : Grain crack (d) and rupture (e) lastometer distention values (mm) - Table 9 : Maximum stress during tear (kg mm-1) (f), extension at rupture (%) for linear extension (g) - Table 10 : Overall segment averages for physical test results En ligne : https://drive.google.com/file/d/1A95K1AY5enimAV7QKWOFMsiV7ZNnQaQG/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35484 [article]

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A simple approach to leather process investigation part 3 - The development of the modified standard process for side leather / Ibrahim Elrufai abuelhassan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 68 (Année 1984)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 68 (Année 1984) . - p. 125-138 Titre : A simple approach to leather process investigation part 3 - The development of the modified standard process for side leather Type de document : texte imprimé Auteurs : Ibrahim Elrufai abuelhassan, Auteur ; Alan Gordon Ward, Auteur ; S. Wolstenholme, Auteur Année de publication : 1984 Article en page(s) : p. 125-138 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux Essais (technologie) Procédés de fabrication Statistique Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A standard process for the production of segments of chrome side leather, in a controlled manner, has been reported in T. Soc. Leather Technol. Chem., (1974), 58, 88. This process has been further developed to give a modified standard process in which the three main changes are (I) the use of whole sides in place of segments, (II) a drum liming procedure to replace the circulatory system employed previously for liming stationary segments, and (III) the transfer of the operation of splitting from the stage after liming to after chrome tanning. The course of development of the modified standard process is described, including details of consequential changes to deliming, pickling, tanning, basifying and neutralisation. It was also necessary to modify drying and conditioning, to enable whole sides to be handled. The properties of leather made by the modified process have been compared with those of standard process leathers. Although minor differences can be detected between the subjective properties (break, temper and grain quality) of leathers made by the two processes and also between a minority of the physical properties measured at corresponding locations on a side or segment, the similarities are sufficient to regard the new process as a near equivalent of the original process. Leathers made by the modified standard process on different occasions have highly reproducible properties and so the process is suitable for the study of the effect of variants in the leather-making operations on properties of the final leather. Note de contenu : - DEVELOPMENT OF THE MSP FOR WHOLE SIDES : Raw material - Siding - Brining, soaking and liming - Defining, pickling and tanning - Washing and neutralisation - Drying - Conditioning - Operation of the temperature and pH controlled drum - Machine operations - THE MODIFIED STANDARD PROCESS : Farm environment - Slaughterhouse procedure - Siding - Washing - Green fleshing - Brining - Brine pile - Soaking - Liming - Lime fleshing - Hair and scud removal - White liming - Washing - Deliming - Flushing - Bating - Flushing - Pickling and tannage - Chrome pile - Samming - Chrome splitting - Shaving - Washing - Neutralisation - Flushing - Dyeing - Flushing - Fatliquoring - Fatliquor pile - Samming and setting - Conditioning - Toggling - Storage - Process control - TEST METHOD DETAILS : Weight and area measurements - Sample squares for subjective and physical tests - Subjective and objective physical testing - Chemicsal tests - STATISTICAL ANALYSES AND EXPERIMENTAL PLANNING : The sign test for the paired case - Mann-Whitney test - Wilcoxon test - The Kruskall-Wallis test - PROCEDURES FOR PREPARING PACKS 1-4 : Pack 1. Check of SP operations - Pack 2. Introduction of drum liming and chrome splitting variants - Pack 3. Comparison of SP and MSP for whole sides - Pack 4 : The standard pack - EXPERIMENTAL RESULTS AND DISCUSSION : Reproducibility of the standard process for segments - Effect of the drum liming and chrome splitting variants (for segments) - The change to processing whole sides (pack 3) - The standard pack of MSP leather (pack 4) - Fig. 1 : Location of segment required for the standard process of laight and of the area of the 20 squares available for test samples from modified standard process leather, within the side used for the modified standard process - Fig. 2 : Squares within the area of the side used for test purposes, together with the arrangement and orientation of samples within the 12 squares usef for lastometer and Instron testing En ligne : https://drive.google.com/file/d/19qG8HFhp0_MD1IyHdLXox-NwG0mvfEX2/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34149 [article]

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The science and technology of gelatin / Alan Gordon Ward / Londres [Royaume-Uni] : Academic Press (1977)

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