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  • 05 Oct 2021

Herma introduces 42Rpo removable adhesive

Herma has added 42Rpo adhesive to its portfolio of removable adhesives. The new Herma adhesive 42Rpo can be applied to any label material including thermal paper.

A conventional coating with an opaque effect cannot be applied to the back of this type of paper because of its sensitivity to heat, Herma said. With 42Rpo the opacity originates from a ‘special’ blue pigment that gives color to the adhesive without compromising its removable properties.  
‘As far as we’re aware, there are no similar adhesives on the market,’ commented Ralf Drache, Herma’s head of self-adhesive sales.  
Labels coated with this adhesive are applied to circulation crates in intralogistics or deposit return schemes, and to letters and packages on which a code or information in plain text is to be concealed only temporarily.  
‘In recent years Herma has been repeatedly demonstrating its extensive removability skills. We can now offer a removable solution for just about every application, whether for special surfaces or challenging label materials. The Herma portfolio accommodates a wide variety of removable adhesives. Most of them are also suitable for use in labeling food products. This capability alone had already earned Herma a stand-out position in the industry,’ Drache added.   
Herma placed its faith in multi-layer technology at an early stage. Its removable adhesive 42Rpp, for example, eliminates penetration of thermal paper by the adhesive. It also overcomes the problem of staining – adhesive that remains on the surface when the label is peeled off.  
The removable adhesive 42Lpp is easy to remove from glass, metal and plastic surfaces. It is resistant to plasticizers, and its adhesive force does not increase even on exposure to temperatures up to 65 degree Celsius – it remains easy to remove.  
The problem of ‘ghosting’ – the non-tacky, but milky and distinctive film that can be left behind on some surfaces – is also banished by the 42Lpp adhesive. The adhesive 42Upp is ideal for labels intended for peeling off the front covers of magazines and books without leaving any residue or damaging the substrate.  
Other Herma removable adhesives can be used with several plastic surfaces (42E adhesive), applications involving oils and detergents (52C adhesive), labels that are used to seal wet wipe pouches and application to curved surfaces or across edges (42N adhesive).  
The 52N variant comes into play where the adhesive strength of 42N is inadequate, typically in the case of boxes or rough surfaces. The UV acrylate-based 42X can be used to produce removable labels from special materials and is available from a minimum coating quantity of 1,000 square meters. This adhesive is suitable for partial gumming, as required for labels with a tab. 


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