In chrome tannage,pickled pelt is treated with basic chrome sulphate. Each chrome complex molecule reacts with several carboxyl groups of collagen to produce crosslinking between different molecule chains of the collagen. This will strengthen the fiber ne...[繼續(xù)閱讀]

    The bulk of chamois leather is used as wash leather for cleaning windows,car bodies and similar surfaces where its particular merit is its softness,high water absorbency and “wringability”. The traditional method of making chamois leather was to impregnat...[繼續(xù)閱讀]

    The C-RFP process can be used to produce all types of vegetable leather,e.g. sole leather,harness leather,split hides and lining leather. In the following pages we shall describe the manufacture of sole leather and upper leather.2.1 Processes for Sole Lea...[繼續(xù)閱讀]

    Leather industry is a traditional industry that has evolved since early civilization. Advances in production and technology have resulted in a complex global commodity market. In 2000,the global value of hide and skin production exceeded US ＄ 14.5 billion...[繼續(xù)閱讀]

    Approximate 99% of all the raw hides and skins is from mammals. After slaughter most mammals,such as oxen,calves,horses,sheep,goats and pigs,are flayed by making ripping cuts in the belly and legs. They are often hung up,and the skins are peeled off start...[繼續(xù)閱讀]

    There are numerous raw hide defects (Fig.3) that may reduce the value of the hide and consequently reduce the value of the leather made from it. These defects may be caused either by disease or external damage before the animal is slaughtered,or by incorr...[繼續(xù)閱讀]

    On the following pages we will outline the items that indicate the properties of leather,regardless of the type of skin from which leather is made. These chemical and physical items can be determined or measured by the standard methods.2.1 Volatile Matter...[繼續(xù)閱讀]

    The following list gives brief descriptions of the different types of leathers and indicates their typical properties and uses.3.1 Side LeatherCattlehide grain leather which,prior to processing,has been cut in half forming two“sides”.Purpose is to reduce ...[繼續(xù)閱讀]

    In many cases it is impossible to put fresh hides and skins into leather production within hours of slaughter. Usually it takes 2 to 25 weeks to collect,store,market,transport hides and skins from slaughterhouse to tannery workshop. In this very period,hi...[繼續(xù)閱讀]

    Limed hide is a three dimensional network of protein fibers. These fibers have absorbed alkali in the form of lime and other alkaline materials. The skin is a blue-white,swollen,rubberlike,translucent mass. The deliming process,therefore,is one that will ...[繼續(xù)閱讀]