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675 : Technologie du cuir et de la fourrure |
Ouvrages de la bibliothèque en indexation 675
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Research on experimental exploration and identification positioning algorithm for the optimal stretching point of leather in the toggling process / Huan Yuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 5 (09-10/2023)
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Titre : Research on experimental exploration and identification positioning algorithm for the optimal stretching point of leather in the toggling process Type de document : texte imprimé Auteurs : Huan Yuan, Auteur ; Ren Gonchang, Auteur ; Su Xiangyu, Auteur ; Jin Guang, Auteur ; Yang Yiming, Auteur ; Zhang Heng, Auteur Année de publication : 2023 Article en page(s) : p. 175-182 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Algorithmes
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux de moutons
Etirement (mécanique)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The objective of this research is to address the issue of automated selection of the optimal stretching position for leather during the leather toggling process. By analysing a substantial number of leather profiles and the actions involved in manual stretching and leather stretching, it has been determined that selecting appropriate stretching positions and intervals is the pivotal factor in enhancing leather yield. Through orthogonal experimentation, it has been deduced that the ideal distances between the stretching points on both sides of the head and tail, as well as on both sides of the body parallel to the midrib line, are 12cm and 9cm respectively. Building upon this, the study proposes an algorithm for identifying and locating the most suitable stretching positions based on the simplified skeleton method and the intersection method of drawn circles. The algorithm employs machine vision to obtain the initial image of the leather source, followed by preprocessing to eliminate image defects and accentuated contours. Subsequently, the thinning algorithm extracts the image skeleton, and the convolution operation filters out the ridges and limbs of the leather, resulting in the simplest skeleton that determines the requisite stretching points. Building upon the determination of the necessary stretching points, the remaining contour regions of the leather are established using the circle intersection method, thus obtaining the remaining stretching points. The identified algorithm for identifying the optimal stretching points in this study holds significant importance in the research and development of automated equipment for the leather stretching plate drying process, and serves as a valuable reference for enhancing leather yield and optimising the process. Note de contenu : - The method and principle of selecting stretching points
- Exploration experiment of optimal stretching points
- Design of the optimal stretch point identification algorithm : Image preprocessing - Selection of indispensable stretching points - Selection of other stretching ponts - ALgorithm verification and result analysis
- Table 1 : Table of horizontal parameters of various factors
- Table 2 : Orthogonal experiment scheme and result record table
- Table 3 : Range analysis of the experimental resultsEn ligne : https://drive.google.com/file/d/1rir9LlaHepJ3AlnIpukUQ58D3AOk_wiA/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39956
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 107, N° 5 (09-10/2023) . - p. 175-182[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24238 - Périodique Bibliothèque principale Documentaires Disponible Research on formaldehycle emission characteristics of leather with porous structure by sealed jar method / Yuan Xuzheng in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 6 (11-12/2017)
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Titre : Research on formaldehycle emission characteristics of leather with porous structure by sealed jar method Type de document : texte imprimé Auteurs : Yuan Xuzheng, Auteur ; Wang Xuechuan, Auteur ; Lu Weina, Auteur ; Jiang Sujie, Auteur Année de publication : 2017 Article en page(s) : p. 284-289 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chromatographie en phase liquide à hautes performances
Cuirs et peaux -- Analyse
Cuirs et peaux -- Effets de la température
Emission de polluants
Formaldéhyde
Matériaux poreuxIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Formaldehyde release tests of leather with porous structures were carried out according to ISO 17226-3 standard-sealed jar method. Effects of temperature on the release behaviour were investigated. The formaldehyde emission model in sealed system was established according to the law of mass transfer under several reasonable assumptions and verified by the fitting of actual release data.
The results showed that formaldehyde emission could be divided into three stages : the linear free release, barrier release and chemical release stages. The linear release .time inversely correlated with mass transfer coefficient of leather. The temperature had a significant promotion impact on release during linear release time. The higher the temperature was, the faster the formaldehyde release. Different types of leather showed different release characteristics because of porosity. The average release speed for sheepskin was faster than that of cowhide at the same temperature. However, with the increase of temperature, the increase in the rate of release speed of cowhide was greater. From 30°C to 60°C, the speed for sheepskin increased 19.39% for every increase of 1 degree Celsius by average, and that of cowhide increased 29.92%.Note de contenu : - EXPERIMENTAL SECTION : Materials - Pretreatment of leather samples - Procedure for the determination of formaldehyde emission by the HPLC method - Determination of porosity of leather by carbon tetrachloride permeation method - SEM observation - Effect of temperature on release behaviour - Release kinetics of leather
- RESULTS AND DISCUSSION : Results of the porosity of leather - SEM images of leather cross section - Effect of temperature on formaldehyde emission - Theoretical assumptions of the release model and derivation of release equations - Collection and fitting of actual release dataEn ligne : https://drive.google.com/file/d/1fKSsaEFWV3nSAOt2XPelqnVLEZ_DWo6I/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29666
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 101, N° 6 (11-12/2017) . - p. 284-289[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19446 - Périodique Bibliothèque principale Documentaires Disponible Research on innovative design methods of intangible cultural heritage in leather products / Han Xu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 3 (03/2024)
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Titre : Research on innovative design methods of intangible cultural heritage in leather products Type de document : texte imprimé Auteurs : Han Xu, Auteur ; Han Chen, Auteur ; Biyu Peng, Auteur ; Luming Yang, Auteur Année de publication : 2024 Article en page(s) : p. 119-131 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Conception technique
Couleur -- Dans l'art
Couture
Innovations
Motifs (arts décoratifs)
Patrimoine culturel -- Analyse
Patrimoine technique
Point de croix
Recherche
Vêtements en cuirIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Intangible cultural heritage is an important symbol of a nation’s historical and cultural achievements, containing rich connotations and high artistic value. Leather products, as a significant component of modern fashion, have a wide range of market demand. To address the issues of traditional patterns in intangible cultural heritage not matching modern aesthetics and lacking application scenarios, this study takes leather products as carriers and proposes an innovative design paradigm for traditional clothing patterns. We chose the Miao cross-stitch patterns of Guizhou, China, as a case study. Analyzed their subject connotations, common structures and features. Using split grammar and shape grammar, the patterns are deconstructed and reassembled to obtain foundational innovative patterns. The Mean-shift clustering algorithm was applied to extract the classic colors of Miao cross-stitch patterns. Based on fractal theory and computer algorithms, a novel pattern model for Miao cross-stitch was proposed, incorporating representative patterns and colors to complete pattern designs. Finally, the feasibility of the proposed approach was validated through the practical design of leather fashion accessories on the Style 3D platform. This study aims to provide methodological references for the modernization and innovation of intangible cultural heritage, as well as the diverse integration of leather products design. Note de contenu : - RESEARCH BASIS : Patterns motifs - Pattern structure - Pattern color
- METHODS : Elemental derivation methods - Mean-shift color clustering algorithm - Fractal pattern design method - Design paradigm
- APPLICATION : Derivation of Miao cross-stitch element - Color design of Miao cross-stitch - Miao cross-stitch pattern design - The application of cross-stitch patterns in leather apparel
- Table 1 : Classification and extraction of Miao cross-stitch patterns
- Table 2 : Classic pattern colors and their RGB valuesDOI : https://doi.org/10.34314/jalca.v119i3.8265 En ligne : https://drive.google.com/file/d/1Qp_XpW8G8ymFGSO9FvqL3MyAYkiCWUtx/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40618
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIX, N° 3 (03/2024) . - p. 119-131[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24535 - Périodique Bibliothèque principale Documentaires Disponible Research on materials appropriate for restoration - Impacts of ancient and modern tanning techniques on leather character / Bernhard Trommer in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CV, N° 5 (05/2010)
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Titre : Research on materials appropriate for restoration - Impacts of ancient and modern tanning techniques on leather character Type de document : texte imprimé Auteurs : Bernhard Trommer, Auteur ; Andreas Schulze, Auteur ; Gabriele Hilsky, Auteur Année de publication : 2010 Article en page(s) : p. 160-171 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Technology for restoration leathers - There now exist a large number of investigations on leather decay and its effect on cultural heritage ; however, appropriated and sustainable sources of restoration leather are missing. Simple test methods and agreements regarding the quality assurance of commercial restoration products are not available. Many of the outstanding properties of ancient leather like long-term stability are attributed to the method of manufacture and the processing auxiliaries' common for the period of origin. The pure replication of the ancient techniques in detail is neither possible nor economically viable. Every step of tannage causes an anticipated step of collagen degradation. Is it possible to obtain a restoration leather of outstanding quality also under modern conditions ? The Saxon States Authority for the Care of Monuments, the Research Institute for Leather and Plastic Sheeting (FILK Freiberg) and the Department of Conservation & Restoration of Moritzburg Castle co-operate in research on material appropriated for restoration of baroque leather wall hangings. The paper presents different characteristics of ancient and modern tanning techniques, practical experiences, test methods and recommendations for the manufacturing of restoration leather. En ligne : https://drive.google.com/file/d/1Zm3q201SW3bGL4XYz1mKkmqw0ge0MGKg/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9365
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CV, N° 5 (05/2010) . - p. 160-171[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012157 - Périodique Bibliothèque principale Documentaires Disponible Research on sheepskin contour extraction method based on computer vision measurement technology in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 8 (08/2021)
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Titre : Research on sheepskin contour extraction method based on computer vision measurement technology Type de document : texte imprimé Année de publication : 2021 Article en page(s) : p. 267-276 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Algorithmes
Automatisation
Cuirs et peaux de moutons
Mesure -- Instruments
Mesures optiques
RognageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Manual trimming of sheepskin is intensive labor, and the working environment is full of rotten smells. The tannery is facing increasingly severe recruitment difficulties. This paper uses computer vision technology to study automatic recognition of sheepskin contours, which is the basis for the subsequent automatic trimming of sheepskin. After observing and analyzing the raw sheepskin images collected by an industrial array camera, a method of sheepskin contour extraction based on computer vision measurement technology is proposed in this paper. This method uses the fast Otsu threshold algorithm based on the pixel set to perform binary image segmentation. Combined with morphological processing for edge defect filling and topology analysis of boundary contour tracking algorithm to extract maximum contour information, it has a pixel-level three-dimensional de-noising preprocessing function and can accurately extract the sheepskin contour in the raw sheepskin image. The experimental results show that using the fast Otsu threshold algorithm proposed in this paper for binary segmentation to extract sheepskin contours, the detection rate is nearly 160% faster than the traditional Otsu algorithm, the edge protection is better, the error segmentation is reduced by nearly 3% and it has good anti-noise performance. It can meet the industrial production requirements of subsequent automatic cutting of sheepskin. Note de contenu : - MATERIALS AND METHODS : A preprocessing system based on pixel level 3D de-noising model - Fast Otsu's threshold segmentation algorithm based on the idea of pixel set - Image segmentation optimization threshold method - Accelerated search threshold strategy - Image segmentation algorithm flow - Morphological defect repair - Contour extraction - Boundary contour tracking technology - Target contour extraction
- EXPERIMENTAL RESULTS AND ANALYSIS : Effect analysis of contour extraction method - Comparison and analysis of pre-treatment de-noising effect - Force analysis of image segmentation algorithm
- Table 1 : The evaluation values
- Table 2 : Comparison of the efficiency of Otsu 2D-Otsu and this paper (ms)DOI : https://doi.org/10.34314/jalca.v116i8.4355 En ligne : https://drive.google.com/file/d/1ObCvI0CPwYSUC5bRVpPdivY4Cl9Jj8Td/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36083
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Code-barres Cote Support Localisation Section Disponibilité 22875 - Périodique Bibliothèque principale Documentaires Disponible Research on the composite and functional characteristics of leather fiber mixed with nitrile rubber / Guo Jun in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)
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PermalinkResearch on the production of parchment from turkey skin and its decorative use / Eser Eke Bayramoglu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 5 (05/2022)
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PermalinkResearch on the trend of development, existing problems and countermeasures of chinese leather industry / Fang Su in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 4 (07-08/2021)
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PermalinkA research on the use of aluminum sulphate in parchment production and its effects on ageing and color / Nilgün Kayahan Kolan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 7 (07/2022)
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PermalinkResearch on thermal stability, moisture and air permeability of natural leather based on the spatial conformation of the type 1 collagen molecule / Zhong Anhua in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 5 (09-10/2017)
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PermalinkResearch on two-step synthesis method of 12-hydroxystearate diethanolamide / Ziling Zhao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 2 (03-04/2023)
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PermalinkResearch progress on resource utilization of leather solid waste / Yanchun Li in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 1 (Année 2019)
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PermalinkResearch recap of membrane technology for tannery wastewater treatment : a review / Fu Yang in COLLAGEN AND LEATHER, Vol. 5 (2023)
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PermalinkLa Réserve des Arts pour sourcer du cuir à petits prix / Juliette Sebille in LEATHER FASHION DESIGN (LFD), N° 1 (02/2019)
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PermalinkRésines réticulables à froid dans les couches de base de finissage / Max Roque in REVUE TECHNIQUE DES INDUSTRIES DU CUIR, Vol. LXVI (Année 1974)
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PermalinkRésines réticulables à froid dans les couches de base de finissage / M. Roque in TECHNICUIR, N° 10 (12/1973)
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PermalinkResistance of bullfrog leather and skin composition during beamhouse operations in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 97, N° 5 (09-10/2013)
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PermalinkResolution of scatter cockle on pickled pelts and crust leather after treatment of lambs to remove lice / Sue M. Cooper in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 81, N° 3 (05-06/1997)
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PermalinkResource utilisation of solid leather waste : Part 2. A review / Shyamoli Shaw in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 4 (07-08/2022)
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PermalinkResource utilisation of solid leather waste - Part I / Shyamoli Shaw in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 3 (05-06/2022)
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PermalinkResource utilization of bovine hair recycling from enzymatic unhairing during leather manufacturing : Alkali-protease synergistic preparation of keratin and its in vitro antioxidant activity / Ting Liu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 9 (09/2023)
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PermalinkResponsabilité Sociétale des entreprises de la filière cuir / Régis Léty in CTC ENTREPRISES, (10/2011)
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PermalinkResponsabilité Sociétale des entreprises de la filière cuir / Régis Léty in CTC ENTREPRISES, (09/2011)
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PermalinkResponsabilité Sociétale des entreprises de la filière Cuir (Partie 3) / Thierry Poncet in CTC ENTREPRISES, (11/2011)
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PermalinkResults of the hide evaluations from the National Cattlemen's Association "Strategic Alliance Project" of 1993 / Robert G. Koeppen in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXXI, N° 6 (06/1996)
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