Germany-based self-adhesive technology provider Herma has introduced a new plasticizer-free, acrylate-based dispersion adhesive that is well-suited to be used on a variety of rough and otherwise difficult surfaces.
The new 65Tpc adhesive offers processing properties that will sidestep the drawbacks that are associated with such surfaces.
The German test institute has approved the 65Tpc adhesive, which is available in combination with a range of paper and film label stock, for contact with dry, moist and fatty food items.
Labels coated with this adhesive will easily stick to different materials such as polyurethane and expanded polystyrene, rough PE canisters, tyres, metal castings and wooden pallets.
With this new technology, the adhesive can be used without the fear of bleeding which is a common problem among other similar products.
Herma head of development Dr Ulli Ngele said as with many synthetic materials, the problem lies in the low-energy surface, especially in combination with the carbon black particles that are contained in tyres.
"Although the HERMA 65Tpc adhesive also has a fairly high coat weight, a special second layer endows it with high cohesive (internal) strength. This significantly reduces adhesive bleeding, so that the coating can be applied to the whole of the label without omitting certain areas or the edges," added Ngele.
The adhesive does not attack or bleed through either the surface to which the label is stuck or the label itself because it does not contain any plasticizers.
This adhesive will also be effective on other crucial surfaces which include various plastic and foamed materials, aluminium checker plate, concrete, carpet backing, and even the rough skins of some fruits, such as the cantaloupe and other netted melons.
