Jowatherm-Reaktant® MR 604.90 is a PUR hot melt adhesive with hazard-free labelling for wrapping window profiles. The product is certified according to RALGZ 716 and impresses due to outstanding hydrolysis stability and high initial strength, especially on profiles with sharp contours. Jowatherm-Reaktant® MR
604.90 can be used in combination with the NEP-free and low VOC Primer Jowat® 406.84 or with Primer Jowat® 406.78 (MEK-based). Those two product combinations can bond more than 95 % of the PVC- and PMMA-based (with primer coating) decor foils established on the market.
Within only 24 hours after laminating, the adhesive reaches high peel and foil tear resistances in roll peel tests according to EN 1372*.
Jowatherm-Reaktant® MR 604.90 is also an adhesive of great versatility with regard to feed speeds. It provides maximum flexibility in fast (up to 40 m/min) as well as in slow (from 6 m/min) processes.
Contract laminators benefit from the possibility to remove all adhesive / the entire foil from unprimered profiles when the machine is set up or in case of frequent profile changes. This reduces material waste and promotes sustainability.
*If the process parameters indicated in the technical guideline "Reliable lamination of window profiles" by the Gütegemeinschaft Kunststoff-Fensterprofilsysteme e.V. are met.
Monomer-reduced PUR hot melt adhesives (MR)
One-component, moisture-curing PUR hot melt adhesives have been an established technology in plastic window profile wrapping applications for decades. The conventional PUR hot melt adhesives generally contain residual monomers (usually
diphenylmethane-4-4’-diisocyanate, MDI) in the order of approx. 2 %. Since 2012, products with a free monomeric isocyanate content of 0.1 % and more must be labelled with the GHS pictogram No. 8 (health hazard) and with the corresponding
safety information (H and P statements). Adhesives with a free monomeric isocyanate content of less than 0.1 % are not subject to hazard labelling requirements.