Use of selected adhesive mixtures for overlap adhesion of round labels when applied to plastic bottles
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsEckhard Puerkner, Andreas Ferencz, Marcus Heemann, Thomas Huver, Hermann Onusseit
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Abstract
Adhesive systems are useful for bonding wrap-around labels using an overlap adhesive in their application to blown plastic containers, more particularly plastic bottles. The adhesive system includes reactive contact adhesives based on multifunctional macromonomer compounds curable in steps by different reaction mechanisms, which may also be present mixed with one-stage reactive mixture components.
Claims23
A method for the application of a wrap-around label to a container, the method comprising applying an adhesive composition to at least a portion of the label, the adhesive composition comprising as binder component A a curable polyfunctional macromonomer containing moisture-curing isocyanate groups and olefinically unsaturated radically reactive groups, the isocyanate groups and radically reactive groups curing by different reaction mechanisms;
- and
- overlap bonding the label around the container.
A labelled plastic container comprising a label having a first portion coated at least in part with an adhesive composition comprising a binder component A comprising a curable polyfunctional macromonomer compound containing both moisture-curing isocyanate groups and olefinically unsaturated radically reactive groups, the isocyanate groups and olefinically unsaturated radically reactive groups being cured by different reaction mechanisms, the label being wrapped around a plastic container and having a second portion which overlaps and is in direct contact with the adhesive on the first portion of the label.
Dependencies are inferred from the claim text.