Lecture 011.013

SELF-ADHESIVE PLASTIC LABELS
BY MARGARETE ESKA

The Landesmuseum Württemberg in Stuttgart owns a collection of 1400 self-adhesive advertising labels dating between 1978 and 1982. In order to preserve these comparatively recent objects, research had to be done on the production techniques as well as the materials used. The most commonly used materials for the labels in this collection are various plastic foils (especially PVC- , cellulose acetate-, and polyester-films) and paper. All the decals had remained on their protective papers.
In developing guidelines for the handling of decals, empha- sis was put on the observation and description of preexisting damages. The condition of other decal collections was also taken into account. To clarify the causes of damages, various investigations on the objects as a composit material, as well as on the composit’s individual components were conducted. Sample la- bels of comparable age were exposed to extreme conditions for accelerated ageing. The key variables were temperature, humidity and light. The obtained knowledge was used to deduce gen- eral requirements for the longterm storage and presentation of self-adhesive advertising labels.

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