Protection and Conservation of Materials on Paper Evaluation of Permanence and Durability of the Laminated Material on Paper
| Main Authors: | , |
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| Format: | Article |
| Language: | English Slovak |
| ISSN: | ISSN 0034-5806 |
| Online Access: | http://www.viks.sk/chk/res_4_97_177_190.doc |
| Abstract: | Conclusions. The results of testing the chemical and surface stability, mechanical resistance and optical resistance of samples of laminated materials LK-1 and LK-2 on quality permanent paper ICP-PP3, using two different kinds of polymer foils, in the process of accelerated ageing according to ISO 5639/3 were as follows: ˙ The use of Filmoplast R for the permanent protection of materials used in the production of the laminate composite LK-2 is very suitable for the protection of documents. It obtains favourable results of chemical stability and good surface qualities; it is both mechanically and optically resistant, even when compared to the quality of permanent paper corresponding to ISO 9706 requirements. ˙ The use of PE polymer foil for the permanent protection of materials used in the production of the laminate composite LK-1 yields less favourable results with regard to permanence and durability and is unsuitable for protection over a long span of time. It shows a rather high degree of chemical instability, especially with regard to oxidation. The surface becomes increasingly hydrophilic and its mechanical resistance decreases, which is revealed in the lack of flexibility and bonding. Its visual aspect, defined by optical characteristics, deteriorates substantially. ˙ The conservation method of lamination and coating of documents and other materials on paper is very suitable both for protection and for saving extremely damaged materials, as well as for the rapid protection of great quantities of material. ˙ On the basis of the results of this research it can be stated that the use of more recent materials (Filmoplast R) is to be recommended since it assures a high degree of durability and permanence; a document is also thinner and the process of conservation more simple. Due to its rather high price, however, this latest method is to be recommended mostly for protection of very precious materials on paper. The use of more permanent kinds of paper and other materials as well as the latest methods of conservation and preservation in preserving the cultural heritage on paper, for materials of lasting value is: indispensable for the preservation of one's heritage for posterity economically justified environmentally oriented. Summaries. In the context of the two-year applicational research work in 1995-1996 entitled "Ageing of Paper and Board", the influence on quality of different types of paper as well as the different protection, conservation and restoration procedures on the durability and permanence of paper and printing and writing materials was researched. The project is performed at the Institute for Cellulose and Paper in collaboration of the National Archives, funded by the Ministry of Science and Technology and the Ministry of Culture of the Republic of Slovenia. During the lamination as a conservation procedure we have stated the influence of different base materials (two kinds of polymer foils) on the end properties of a restored document. This was performed in comparison with permanent paper. The results of chemical stability, surface properties, mechanical strength and optical stability of paper and two kinds of laminates have shown the quality and usefulness of conservation procedures employing" lamination. The research work has shown very favourable results of durability and permanence using the newest type of polymer foil material. Because of its high price it is recommended only for highly damaged documents and other printed and written materials. |
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| ISSN: | ISSN 0034-5806 |
