Műtárgyvédelem, 2007 (Magyar Nemzeti Múzeum)

Válogatás az utóbbi évek magyar papír- és könyvrestaurálási munkáiból - Összefoglalók

though the disadvantage is that some printing inks are soluble in water. Wherever colour printing inks are present, the utmost attention should be paid to both the solubility and the possible change of colours of the inks. Further experiments on coated papers printed with colour are currently being carried out.

The Use of Solvent Gel Carbopol to Delaminate Pressure Sensitive Adhesive Tape,

in Particular, Filmoplast- Products

Anja Koschei

The lecture discusses the use of solvent poultices with carbopol to delaminate pressure sensitive tape, in particular, filmoplast- products. After an overview of the general construction and composition of adhesive tapes, the focus will be placed on the ageing processes of adhesive tapes, the carrier of which typically consists of either rubber or acrylics. Accelerated ageing of filmoplast' adhesives tapes, which are based on acrylic polymers, had confirmed the permanence of the carrier, however, the tapes proved difficult to remove. Since conservation treatments are supposed to be reversible, the use of carbopol containing poultices to aid removal was tested. Experiments demonstrated 2% toluene with carbopol as a thickener to be most successful. However, results also depended on the surface characteristics of paper. Advantages and disadvantages of poultices using carbopol in toluene for removal of pressure sensitive adhesive tapes are discussed.

Report on the CCI Tapes and Heat-set Tissues Project

Jane L. Down, R. Scott Williams, Season Tse and Sherry Guild

In June 2001, the Canadian Conservation Institute (CCI) began a project to assess various tapes and heat-set tissues for archival purposes. In a preliminary meeting of conservation professionals from CCI, the Library and Archives Canada, and the Walters Art Museum, a program of research study was worked out which includes the following steps:

1) Screening Program:

a) collection of numerous and varied products,

b) chemical analysis of major components of the products,

c) pH measurement of products,

d) outgassing test of products, and

e) compilation of information and selection of reduced number of products to undergo comprehensive testing.

2) Comprehensive Testing Program:

a) assessment of substrate damage upon aging,

b) removability upon aging,

c) ease of application,

d) long term strength retention of components,

e) long term bond strength to certain substrates,

f) retention of flexibility upon aging,

g) colour change upon aging,

h) carrier suitability, and

i) assessment of all results for archival suitability based on application.

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