New strings of naphthalene tablets, camphor and the like, characterized in that the string is constituted by a multiplicity of pellets of the most convenient form, even different from each other, which are introduced inside a tube with a profusion of holes in their walls of self-contracting flexible material and of equal or substantially greater diameter than the pellets and preferably transparent, including colored, which pellets are touching each other and being pressed together because the heat tube contracts and polymerizes by adapting by contraction against the surface of the tablets as a contracted and self-molded sleeve according to the shape of the juxtaposed tablets. (Machine-translation by Google Translate, not legally binding)
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