We recently reported that some libraries have had problems with CODABAR labels produced by a major supplier. Three libraries have since called to tell us that they too have had bad experiences. There are apparently two types of problems: (1) loosening of the labels under extremely dry atmospheric conditions, and (2) seeping of the adhesive from between a label and its mylar protective covering. The former problem can be solved by putting a mylar patch over the label. In the latter case, the adding of the mylar is actually the cause of the problem, but only under special conditions of high heat and/or pressure. Patrons who carry their identification cards in wallets in their hip pockets may create just such circumstances of heat and pressure. When the adhesive on the mylar patch oozes out, it makes the identification card stick to everything.
The libraries in dry areas have been provided with free mylar patches and those with sticky labels have been given free replacement labels, but the problems themselves have apparently not disappeared.
