Adhesive tape with pre-treated intermediate layer

摘要

Adhesive tape which can be pulled off again without causing damage or leaving a residue comprises a base material which is pretreated or damaged so as to reduce its stripping strength, coated on one or both sides with self-adhesive material with a tear strength which is more than 1.2 times its stripping strength. Adhesive tape which can be pulled off again without damage and without leaving a residue, in which (a) the base material is coated on one or both sides with a self-adhesive material in which the ratio of tear strength to stripping strength (pull-off strength) at a pull-off angle of less than 10 degrees to the surface is more than 1.2:1, (b) the base material is pretreated/damaged so as to reduce the stripping strength in comparison with that of analogous tape with the untreated/undamaged base and (c) the base material has insufficient tensile strength for pulling off again without damage or residue.