Adhesive packaging tape with natural-rubber hot-melt pressure sensistive adhesive
AssigneeTesa SE
InventorsDieter Wenninger, Werner Karmann, Gerhard Bir, Sven Hansen, Heiko Leydecker, Stefanie Kaprolat, Ralf Hirsch, Klaus Massow
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Abstract
Adhesive tape comprising a backing comprising an oriented thermoplastic film and a coating comprising a solventlessly prepared pressure-sensitive adhesive composition based on non-thermoplastic elastomers such as natural rubber and tackifying resins, characterized in that the pressure-sensitive adhesive composition comprises a thermally labile crosslinking system.
Claims10
1-12. (canceled)
A method for sealing cartons, which comprises sealing said cartons with an adhesive tape comprising a backing comprising an oriented thermoplastic film to which a coating comprising a solventlessly prepared pressure-sensitive adhesive composition based on non-thermoplastic elastomers and comprising a thermally labile crosslinking system is applied, said composition being prepared continuously without solvent and without mastication in a continuously operating device having a filling section and a compounding section, by a process comprising the steps of
- a) feeding the solid components of the self-adhesive composition into the filling section of the device, optionally feeding fillers, dyes, crosslinkers or combinations thereof,
- b) transferring the solid components of the self-adhesive composition from the filling section to the compounding section,
- c) adding the liquid components of the self-adhesive composition to the compounding section,
- d) preparing a homogeneous self-adhesive composition in the compounding section, and
- e) discharging the self-adhesive composition
- said coating being crosslinked after application to said film.
Dependencies are inferred from the claim text.