Mar 17, 2020 - 08:43 AM
Labels / Adhesives material compatibility
We’ve a couple of simple solutions to solve the issue of labels peeling off and/or the ink on the labels degrading. As you'll notice, ccertain types of labels have better material compatibility than others and it depends on the label location, label substrate material, ink type, and adhesive used.
b) Etched metallic substrate (mylar-type, alumimum, etc.) labels which are adhered to flat surfaces are generally fully compatible and stay adhered when immersed.
c) For paper labels adhered to a flat surface we recommend a few drops of https://www.permabond.com/wp-content/uploads/2016/04/790_TDS.pdf Cyanoacrylate glue, this very thin fast drying material (full cures in seconds) wicks readily into paper based labels and fully seals the paper, bonds the ink, and also seals the adhesive. This process takes few seconds with practice. This method is a great way to ensure labels remain readable and attached during immersion.
d) For labels that are attached in locations with uneven surfaces we recommend first the Permabond 790 application, and then an application of http://eclecticproducts.com/products/amazing-goop-adhesives/amazing-goop-ii-max
.html Goop II Max. This is a polypropylene/solvent adhesive that both seals and adheres. We use this in situations where we feel a label is not fully adhered or will have gaps under the adhesive that the 790 will not gap. We spread a very thin layer of the material around the edges of the label making sure to have contact with the label and the surface of the material that label is bonding to. We allow this to fully cure which is about 30m at 18C.
e) Long term we would recommend a migration to Mylar etched type label with a fast curing polypropylene adhesive.