With the HERMA 62L luminophore adhesive, the presence monitoring of transparent labels becomes more reliable. This results in clearly improved safety for the product manufacturer as well as the product user.
Because closure labels and others on pharmaceutical packaging are often transparent for optical reasons, their seamless and reliable presence monitoring using optical sensors is a challenge. Past labels were equipped with luminophores that become visible and detectable as soon as they are exposed to UV light. Generally, this was achieved with a special varnish that was applied to the labels. With the new HERMA 62L adhesive, the luminophores are already integrated during the coating of the adhesive bond.
In the 13-stage Laetus scale, which is used to measure the intensity of luminescence and which is used as a virtual industry standard, the 62L reaches a value of at least 7. This is the value that is usually required for pharmaceutical applications.
The 62L adhesive in the photo is distinguished by additional advantages. Due to its high transparency and an extremely high whitening resistance, the 62L is predestined for use in no-label-look labels, including for subsequent printing in multi-colored UV-printing. As well, it is distinguished by its high tack with high cohesion in conjunction with very good final adhesion. This high cohesion helps to avoid adhesive leaking.