Beiersdorf Ag

Tesa Ag

Tesa Se

Andreas Junghans

Bernd Lühmann

Thilo Dollase

Bernd L&uuml;hmann

Achim Franck

Thorsten Krawinkel

Uwe Schümann

Kirstin Weiland

Michael Egger

Thomas Raadts

Andreas Wieck

Ulrich Otten

Philippe Hesse

Tanja Altenwegner

Sianty Sunarto

Franz Fastermann

Bernd L Uhmann

Markus Kienzle

Klaus Lurk

Thorsten Hellmer

A method of separating two substrates bonded with a redetachable, at least single-sidedly pressure-sensitive adhesive strip composed at least of a) a core layer which has a breaking extension of at least 300%, b) an outer carrier layer which has a breaking extension of not more than 120% and which at least sectionally is connected to the core layer such that it separates from the core layer when the latter is extensionally stretched, and c) a first adhesive layer which is applied at least sectionally to the side of the outer carrier layer that is opposite the side connected to the core layer, in which the core layer is stretched in the direction of the bond plane, starting from a region which has been made nonadhesive, until the core layer releases from at least one of the outer carrier layers so that the two substrates are separated from one another.

Pressure-sensitive adhesive strip for moisture-insensitive peelable adhesive bonds

Adhesive tape for a bond which can be redetached by pulling, without residue or damage, having a foam backing coated on one or both sides with a self-adhesive composition, characterized in that

Adhesive tape

A single-sidedly or double-sidedly pressure-sensitively adhesive, elastic adhesive sheet comprising at least one layer of a pressure-sensitive adhesive, and having a maximum stretchability of more than 200% and a recovery of more than 60% after stretching to &#x2154; of its maximum elongation, said pressure-sensitive adhesive (PSA) being based on a chemically crosslinked polyurethane, wherein the starting materials for the chemically crosslinked polyurethane include at least one isocyanate-reactive substance having a functionality of more than 2.0, in an amount of at least 5% by weight, based on the weight of the polyurethane composition, where the molecular weight of at least one of the starting materials used to form the polyurethane is being greater than or equal to 1000, at least one difunctional polyisocyanates are being used to form the polyurethane, and the ratio of maximum tensile stress to stripping stress is of said elastic adhesive sheet being more than 1.2, and the tensile stress at an elongation of 200% is being not more than 2.0 N/mm.sup.2.

Reusable elastic adhesive sheet redetachable without residue or damage

Redetachable device

Double-sided adhesive tape (fixer) which can be re-released without residue or destruction for hidden bonding on substrates that are to be bonded, with high peel strength, high shear strength and high tip-shear strength, characterized by

Double-sided adhesive tape and its use

Pack for adhesive sheets

An adhesive sheet strip, single-sidedly or double-sidedly pressure-sensitively adhering, redetachable by extensive stretching pulling on a grip tab in the direction of the bond plane, wherein the grip tab is such that it has a static frictional force Fs of at least 170 cN.

Redetachable adhesive strips having slip-resistant grip tabs

Redetachable, self-adhesive device having a plate, the sides and/or front side of which have fastening means, if appropriate, and the rear side of which has a strip of an adhesive film which is adhesive on both sides and is adhesively attached in such a way that one end of the adhesive film protrudes beyond the plate as a grip, the adhesive film being of such a kind that the adhesive bond achieved with it can be released again by pulling, stretching the strip, characterized in that the plate ( ) has at its end, or on its rear side ( ) at least in the region ( A, B) which bears against the grip ( ) of the adhesive film strip ( ), low stick and slip friction with respect to the adhesive film strip ( ).

Redetachable, self-adhesive device

An adhesive film strip for an adhesive bond which can be separated again by pulling on the strip in the direction of the bond plane, the adhesive film strip comprising upper and lower surfaces; first and second ends, wherein the first end serves as a tab for pulling and the second end terminating in at least one point; and an adhesive region extending from the first end toward the second end, wherein the adhesive region comprises a first adhesive region adjacent to the tab, a second adhesive region adjacent to the first adhesive region, wherein the second adhesive region has a cross-sectional area that is sharply reduced relative to the cross-sectional area of the first adhesive region, and a third adhesive region adjacent to the second adhesive region extending and forming the second end.

Adhesive film strip and its use

Redetachable, self-adhesive device having a plate, the sides and/or front side of which have fastening means, if appropriate, and the rear side of which has a strip of an adhesive film which is adhesive on both sides and is adhesively attached in such a way that one end of the adhesive film protrudes beyond the plate as a grip, the adhesive film being of such a kind that the adhesive bond achieved with it can be released again by pulling in the direction of the bonding plane, stretching the strip, characterized in that the rear side of the plate ( ) has laterally alongside the adhesively attached adhesive film ( ) spacers ( A, B), the height of which is less than the thickness of the adhesive film ( ).

Adhesive film strip for a temporary bond which can be detached without residue and without damage by pulling in the direction of the bond plane, having a layer structure comprising an elastic backing layer which is provided on one or both sides with an adhesive layer, characterized in that both the backing layer and the adhesive layer(s) comprise styrene block copolymers as base polymers, blended with tackifier resins which are compatible with the elastomer block of the styrene block copolymers used.

Growing community of inventors

Hamburg, Germany

Andreas Junghans