Abstract: An adhesive tape comprising a composite backing based on an oriented, coextruded, at least two-layer polypropylene film whose one side is provided with an adhesive composition and whose film layers have a low release force with respect to one another.

Abstract: The use of an adhesive tape for detecting the unauthorized broaching of a package, by virtue of the fact that on removal from the surface of a package the adhesive is irreversibly destroyed and clearly indicates an attempted broaching by being destroyed by tearing, or by splitting in the thickness direction, the adhesive tape having a backing based on cellulose acetate, cellulose diacetate, cellulose triacetate or cellulose hydrate of low tear propagation resistance, one side of which backing has been provided with an adhesive composition.

Abstract: A multilayer adhesive tape having a backing based on an oriented thermoplastic film, whose upper face is coated, if desired, with a release coating and to whose lower face the following layers have been applied: