Tesa Se

Claudia Moehrke

Klaus Keite-Telgenbüscher

Uwe Schümann

Frank Hannemann

Björn Zeysing

Séverine Crouzy

Marta Lunding

Stefan Kramp

Reactive adhesive film for bonding various materials, including plastic to metal, the adhesive film comprising (a) a polymeric film-forming matrix, (b) at least one epoxide-functionalized (meth)acrylate or vinyl monomer and (c) a reagent selected from an initiator, in particular a free-radical initiator, or an activator. Further disclosed are reactive adhesive film systems comprising two reactive adhesive films. Methods for producing reactive adhesive films, and methods are also disclosed.

Reactive adhesive film with good heat-and-humidity resistance, in particular for bonding polyamide

A reactive PSA film that includes: (a) a polymeric film former matrix; (b) one or more reactive components; and (c) a reagent selected from an initiator, a curing agent and an activator. The component (b) is present at a mass fraction of ≥30%, as based on the sum of (a), (b) and (c). Further, ≥50 wt % of the film former matrix is a crystallizable polymer which: (i) exhibits a crystallization enthalpy of <1 J/g in a DSC measurement on cooling at 10K/min from at least 30K above a peak temperature of the melting peak of the polymer or ≥100° C., whichever is greater; and (ii) exhibits a crystallite fusion enthalpy of ≥15 mJ/mg in its pure state in a first heating curve of a DSC measurement at 10K/min and after storage for ≥one month from 15 to 25° C. and relative humidity from 30 to 70%.

Storage-stable, reactive, pressure-sensitive adhesive tape

Growing community of inventors

Hamburg, Germany

Claudia Moehrke