Stručni rad
Kinds of damages and conservation and restoration methods in restoration of works of art on the transparent paper
Sandra Juranić
; Hrvatski restauratorski zavod, Zagreb, Hrvatska
Sažetak
Earliest examples of architectural drawings on tracing paper are dating from the 19th century. First chemically treated papers were produced in France in 1846., the production process was further commercially developed by the firm Warren de la Rue in London. The transparency of the paper and light penetration is achieved by impregnation of the pulp with oils and resins, with additional exposure to air and drying these substances create a translucent paper. The typical agents used for achieving transparency are; Canada balsam, (liquid resin that is obtained from the resin of fir tree), dammar and linseed oil. The characteristic transparency of tracing paper was further improved in the twentieth century, since it was invented for the purpose of deriving copies and drawings and designs for architectural and engineering needs. With transparency one of the main characteristics of transparent paper is strong sensitivity and reaction in contact with moisture. In the process of production small fibrils are milled in huge amounts of water, so the fibers are very swollen. When the paper dries, the fibers “remember”, so in the anewed contact with water they became very swollen again. Transparent paper fibers are spread in width from 10 to 20 % , and almost nothing or very little in length. Fibers of transparent paper that is only impregnated, don’t behave so much hygroexpansive, yet the impregnation protects the paper from moisture hygroexpansive. For this reason, depending on the quality of the paper, its sort and the amount of damage, a adequate method is chosen to carry out conservation of the mentioned paper. Most often, treatments are performed only as partial consolidation of tears and intense foldings. Lining should be avoided because it may cause changes in the character of the object and it penetrates into the structure of paper.
Ključne riječi
tracing paper; history of production; types of transparent papers; drawing on transparent paper; physical; mechanical; chemical and biological damages; conservation and restoration methods
Hrčak ID:
156688
URI
Datum izdavanja:
25.4.2016.
Posjeta: 2.192 *