Identification of surface leather defects

Georgieva, Lidiya; Krastev, Kaloyan; Angelov, Nikola

doi:10.1145/973620.973670

Cited by 20 publications

(18 citation statements)

References 7 publications

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“…Tough NO-type and TKO-2 leathers meet the requirements, but NO-1 and NO-2 leathers waterproofness is about 2 -2.5 times higher. It may be dependent not only on the differences in leathers chemical processing, but mainly due to the low skin/hide quality used for TKO-type leathers production [9,10]. While the penetration of liquid water should be prevented, water vapour should pass the leather as freely as possible, or at least be absorbed, to ensure good acclimatization inside of the footwear [4,5].…”

Section: Resultsmentioning

confidence: 99%

“…There are many other factors that influence the waterproofness of leather not only chemical substances used in leather manufacture (salts, tensides, tanning agents, retanning agents, dyestuffs, fatliquoring agents and finishing agents). The initial quality of skin or hide and operation of each process of the skin/hide conversion to the finished leather have significant influence on the waterproofness degree of finished leather [9,10].…”

Section: Introduction *mentioning

confidence: 99%

“…The problems that affect leather quality begin when the animal is still alive, and include, cuts resulted by barbed wire; in-fighting among male members and thorn scratches and cuts; brand marks made for ownership purposes using hot iron; holes and spots from infections and infestations, caused by ticks, horn flies, mange and bot-flies, among others; abscesses resulted from wrong vaccination techniques and natural growth marks or excess weight related problems, like furrows and wrinkles [9]. During transportation, the animal skin may suffer deep injures from nails and wood splints in the truck.…”

Section: Introduction *mentioning

confidence: 99%

“…Improper curing may lead to rotting and putrefaction. The defects during tanning and postprocessing are much less common, as they are controlled by the tanneries, which have in the leather quality their main business [9].…”

Section: Introduction *mentioning

confidence: 99%

See 3 more Smart Citations

Comparable Evaluation of Leather Waterproofing Behaviour upon Hide Quality. I. Influence of Retanning and Fatliqouring Agents on Leather Structure and Properties

Jankauskaitė

Jiyembetova

Gulbinienė

et al. 2012

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For military leather processing pinnacle technologies are applied, because the leather must have extreme hydrophobicity, herewith to maintain the breathability and moisture management capabilities. Therefore, leather producers must use such tanning chemicals, which are able to impart sufficient waterproofness and vapour permeability. In this study the influence of retanning and fatliquoring technologies for wet-blue hide conversion into finished military leather on its waterproofing behaviour and breathability has been studied. The comparable evaluation of leathers manufactured in Lithuanian and Kazakhstan tanneries was carried out. The leathers were characterized by chemical analysis and moisture absorption, water vapour permeability and water vapour absorption properties.

DOI: http://dx.doi.org/10.5755/j01.ms.18.2.1918

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Section: Resultsmentioning

confidence: 99%

Section: Introduction *mentioning

confidence: 99%

Section: Introduction *mentioning

confidence: 99%

Section: Introduction *mentioning

confidence: 99%

See 2 more Smart Citations

Comparable Evaluation of Leather Waterproofing Behaviour upon Hide Quality. I. Influence of Retanning and Fatliqouring Agents on Leather Structure and Properties

Jankauskaitė

Jiyembetova

Gulbinienė

et al. 2012

View full text Add to dashboard Cite

DOI: http://dx.doi.org/10.5755/j01.ms.18.2.1918

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“…Once skins or hides are finished the tanning process, surface defects appear as a major factor affecting their aesthetic appearance, the amount of usable area and thus their value. Therefore, there are very few leathers which do not have natural surface imperfections that require corrections to the grain (Georgieva et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Influence of some mechanical finishing processes on manufactured leather properties

Nasr

2017

MKKP

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The objective of this study is to investigate the influence of using some mechanical finishing processes on final properties of produced leather types. Nappa, nubuck, pigmented and corrected grain leather types were produced by applying some of the following operations: hang drying, vacuum drying, molissa staking, drum milling, buffing, spraying and/or embossing surface with extreme pressure. Hydrophobic-hydrophilic status, scanning electron micrographs, organoleptic and mechanical properties were determined on all finished leather types. Results showed that water behavior was hydrophobic for nappa leathers, while it was hydrophilic with the rest of produced leather types. Buffing surface in nubuck leather increases the water absorption and water vapor permeability, while the opposite was found when applying external coat layer in pigmented and corrected grain leathers. Applying vacuum drying in nappa leathers increases surface smoothness and surface water contact angle while decreases tensile and tearing strengths. These results elucidate that all studied leather types are suitable for manufacturing purposes except nubuck leather which is not recommended for footwear uppers manufacturing due to its high water absorption. The present study emphasized that while mechanical finishing processes could have profound effects on leathers surface behavior, they must be adequate to the requirements and properties of the end products.

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Overview on Machine Vision Based Surface Defect Detection and Quality Classification in the Leather Manufacturing Process

Smith

Kurien

2022

Advances in Visual Computing

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Identification of surface leather defects

Cited by 20 publications

References 7 publications

Comparable Evaluation of Leather Waterproofing Behaviour upon Hide Quality. I. Influence of Retanning and Fatliqouring Agents on Leather Structure and Properties

Comparable Evaluation of Leather Waterproofing Behaviour upon Hide Quality. I. Influence of Retanning and Fatliqouring Agents on Leather Structure and Properties

Influence of some mechanical finishing processes on manufactured leather properties

Overview on Machine Vision Based Surface Defect Detection and Quality Classification in the Leather Manufacturing Process

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