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US 11,920,066 B2Granted
Adhesive tape particularly for oily surfaces
AssigneeTesa SE
InventorsChristian Schuh, Yvonne Querdel, Alexander Kutter, Lars Guldbrandsen
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Abstract
The invention relates to an adhesive tape, comprising at least one layer of a first, heat-curable adhesive material and, on one of the surfaces of the heat-curable adhesive material layer, a layer of a second, pressure-sensitive adhesive material, characterized in that the second, pressure-sensitive adhesive material is based on one or more unvulcanized rubbers having a saturated carbon chain of the polymethylene type.
Claims21
An adhesive tape for oily surfaces, comprising:
- a first layer of a heat-curable adhesive;
- and
- a second layer of a pressure-sensitive adhesive on one surface of the first layer of the heat-curable adhesive,
- wherein the pressure-sensitive adhesive of the second layer is based on one or more rubbers having a saturated carbon chain of polymethylene,
- wherein the second layer of the pressure-sensitive adhesive comprises a thickness in the range from 10 μm to 45 μm and at least 50% (by weight) of the one or more rubbers having a saturated carbon chain of polymethylene and 50 to 300 parts of solid tackifying resins relative to 100 parts of the one or more rubbers in solid form, the solid tackifying resins having a softening temperature of greater than 60° C., and
- further wherein a surface coverage of the second layer of the pressure-sensitive adhesive on the one surface of the first layer of the heat-curable adhesive is between 5% and 50% and a coat weight of the second layer is from 0.6 g/m2 to 6.6 g/m2.
3 more elements
Dependencies are inferred from the claim text.