The new multi-layer adhesive 63Spc makes using conventional materials for security or tamper-evident labels even easier. It ensures that seal labels cannot be removed from surfaces such as paper, cardboard, plastic, or steel without being destroyed or leaving visible residue on the surface. Its high cohesion makes the 63Spc more reliable than the single-layer variant.
Using conventional and therefore cost-effective materials for security or tamper-evident labels on many different types of packaging and products is now even easier. HERMA has switched its 63S adhesive, which was specially developed for this purpose, from single-layer technology to the advantageous multi-layer technology. Thanks to the multi-layer technology, the new adhesive, designated 63Spc, has extraordinarily high internal strength (cohesion). This practically eliminates the possibility of adhesive bleeding during processing, such as die-cutting, and therefore ensures a particularly high level of process reliability.
Despite this, label printers and users do not have to make any trade-offs regarding the high initial adhesion and extremely high final adhesion. "Here too, multi-layer technology allows us to perfectly satisfy two seemingly contradictory requirements," says Dr. Stefan Kissling, Head of Adhesive Development and Special Coatings at HERMA.
63Spc is characterised by such a high final adhesion that seal labels on which it is used cannot be removed from lacquered pharmaceutical packaging and many other polar and non-polar surfaces, such as paper, cardboard, plastics, and even steel, without being destroyed or leaving visible residue on the surface. Sophisticated and expensive special materials such as self-destroying foils, holograms, cellophane sleeves, or even completely new folding box designs can thus be avoided.
For several years, tamper evidence and anti-manipulation markers have been stipulated for prescription medicines by EU directive 2011/62/EU. However, owing to its versatile, universal usability, 63Spc is an optimal alternative not only in the pharmaceutical sector. It can also be used wherever originality, security, and control labels play a key role, such as in the automotive, electronics, and food industries. To enable this, the multi-layer adhesive 63Spc is highly resistant to water, hot air, and various solvents. It is also very resistant to ageing.
Available in Combination with Many Label Materials
The use of seal labels to provide tamper evidence is advantageous for many reasons. The presence of labels on packaging is generally accepted in the market, and they barely change the familiar appearance of existing packaging. With medicinal products, for example, folding boxes and folding box systems that have already been validated can continue to be used without issue. The dispensing and application process for conventional labels is also technically uncomplicated.
The adhesive 63Spc is available in combination with a variety of paper and foil materials. On request, special label materials such as paper with security features can also be used.