Protecting the Wallet

A closure seal meets exacting tamper-evidence and counterfeit-protection demands.

To secure sample packages of its erectile dysfunction drug Levitra, Bayer Healthcare sought a tamper-evident closure seal. Bayer needed a seal that could indicate that the package had been opened yet also allow users to reclose the package several times. The opening proof must be clearly visible to the doctor and patient, and it needed to be destructively detachable from the substrate. Finally, Bayer wanted a closure seal that would be easy for users to handle.

Bayer worked with its decades-long development partner Schreiner MediPharm (Munich; Blauvelt, NY), which has developed and supplied specialty labels to Bayer. With a history in serving the medical and pharmaceutical industries, Schreiner MediPharm teamed up with its sister company Schreiner ProSecure, a specialist in authentication, tamper protection, and track and trace.
Schreiner MediPharm and Schreiner ProSecure worked together to customize a Wallet-Seal with a permanent adhesive area as well as removable and adhesive-free areas, explains Thomas Voelcker from Schreiner’s ProSecure division. Additional functional features include a starter tab and an individual void effect.

The nonadhesive, handy starter tab facilitates opening the packaging. It is used to lift the void seal area, which allows multiple resealing of the wallet, from the substrate. When the seal is opened for the first time, the void message “OPEN” appears as the ink printed in this area splits. The message has a different color than the seal and remains permanently visible.
To prevent undetected removal of the seal, the rear area of the seal is affixed to the cardboard packaging with a special, permanent adhesive. This adhesive is specially adapted to the particular requirements of the
solution and the substrate, Voelcker reports. Therefore, any peel-off attempt of the closure seal causes irreversible damage to the packaging.

Voelcker adds that the label was designed with tests on the original cardboard. “The wallet has a lacquer-free area in order to provide a fiber tear if the label is fully removed,” he explains.

Voelcker says that such secure marking and closure solutions result in a seal that meets exacting tamper evidence and counterfeit protection demands. It is custom-tailored to the product packaging and optimally integrated into Bayer Healthcare’s manufacturing processes, as the closure seal can be applied automatically on the packaging line. In addition, the convenience and functionality of the Wallet-Seal enhances the packaging.

Covert security features may also be used in closure seals. Owing to the confidential nature of security applications, specific features used for Bayer or any other company cannot be publically discussed, Voelcker says. “The label design was specially designed based on the requirements of Bayer Healthcare, but may be adopted to any other sealing requirement,” he explains.
Tamper evidence may also play a role in anticounterfeiting. “As a basic principle, tamper evidence is a vital element of a comprehensive brand protection program, as there is no value of anticounterfeiting protection if people can exchange products without indication,” he says. “Tamper evidence protection is recommended also by FDA, EFPIA, and the latest recommendation of the EU Commission.”

Schreiner MediPharm has more than 50 years of experience providing specialty labels to healthcare firms.■

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