Kolesnyk T. Development of technology for the production of leather parchment

An important scientific and practical problem of creating an environmentally oriented technology for the production of leather parchment from sheep raw materials was solved in the dissertation work. The complexity of technology development is determined by the absence of the regulatory documents with a clear list of quality indicators for this type of leather. According to this, the absence of proven technology and widespread practice in the production of leather parchment at the domestic leather enterprises prompts the development of modern technologies for its production, subject to the use of multifunctional, environmentally friendly materials. In this case, the complex of properties of parchment must correspond to its intended purpose. As a result of a complex of theoretical and experimental studies, scientific provisions, conclusions and recommendations were developed and substantiated, which made it possible to develop an environmentally oriented technology for the production of leather parchment. Wherein first determined the expediency of use of a new enzyme preparation and a natural mineral zeolite in the preparatory processes for the production of leather parchment; the nature of the interaction in the systems «collagen-enzyme preparation» and «calcium hydroxide-zeolite», which made it possible to formulate an idea of the peculiarities of the flow of soaking-liming processes using these materials; improved parameters of the preparatory processes for the production of parchment in the form of enzymatic soaking and sulphide-free liming in the presence of zeolite and a smaller amount of calcium hydroxide; further development was achieved by application of the principle of resource conservation and ecologization when creating a technology for the production of natural leather, namely parchment obtained from sheep raw materials using a new enzyme preparation and a domestic natural mineral zeolite in the preparatory processes.