Adhesive tape
First Claim
1. Adhesive tape for a bond which can be detached by pulling, without residue and without damage, having a foam backing coated on one or both sides with a self-adhesive composition, comprisinga) a foamed backing having applied thereto on at least one of the two sides of the foam backing a self-adhesive composition whose ratio of tear strength to stripping force (peel force) at a peel angle of less than 10 to the bond surface is greater than 1.2:
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3 Assignments
0 Petitions
Accused Products
Abstract
Adhesive tape for a bond which can be redetached by pulling, without residue and without damage, having a foam backing coated on one or both sides with a self-adhesive composition, characterized in that
a) on at least one of the two sides of the foam backing there is applied a self-adhesive composition whose ratio of tear strength to stripping force (peel force) at a peel angle of less than 10° to the bond surface is greater than 1.2:1,
b) the foam backing is subjected to controlled pretreatment/damaging in such a way that the detachment force (stripping force) is lowered relative to an analogous self-adhesive tape with a foam backing which has not been correspondingly pretreated/damaged, and
c) the foam backing does not have a tear strength which is sufficient for redetachment without residue or damage.
66 Citations
17 Claims
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1. Adhesive tape for a bond which can be detached by pulling, without residue and without damage, having a foam backing coated on one or both sides with a self-adhesive composition, comprising
a) a foamed backing having applied thereto on at least one of the two sides of the foam backing a self-adhesive composition whose ratio of tear strength to stripping force (peel force) at a peel angle of less than 10 to the bond surface is greater than 1.2: - 1,
b) the foam backing being subjected to controlled pretreatment/damaging by incision in such a way that the mechanical strength of the backing is reduced when the self-adhesive tape subsequently produced using the damaged backing is stretched in the direction of the bond in the course of detaching the tape by pulling, the detachment force (stripping force) is lowered relative to an analogous self-adhesive tape with a foam backing which has not been correspondingly pretreated/damaged, c) the foam backing not having a tear strength which is sufficient for detachment without residue or damage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17)
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16. Adhesive tape for a bond which can be detached by pulling, without residue and without damage, having a foam backing coated on one or both sides with a self-adhesive compositions, comprising
a) a foamed backing having applied thereto on at least one of the two sides of the foam backing a self-adhesive composition whose ratio of tear strength to stripping force (peel force) at a peel angle of less than 10 degrees to the bond surface is greater than 1.2: - 1,
b) the foam backing being subjected to controlled pretreatment/damaging by means of incisions, full cuts, partial cuts, perforation or punching in such a way that the mechanical strength of the foam backing is reduced when the self-adhesive tape subsequently produced using the damaged backing is stretched in the direction of the bond in the course of detaching the tape by pulling, the detachment force (stripping force) being lowered relative to an analogous self-adhesive tape with a foam backing which has not been correspondingly pretreated/damaged, c) the foam backing not having a tear strength which is sufficient for detachment without residue or damage.
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Specification