Henkel Adhesive Technologies rolled out a new generation of its Darex COV sealants, particularly designed for metal packaging applications. This latest innovation cuts out phthalate-based plasticizers, thus offering more secure sealing products with enhanced environmental and health credentials. With this, Henkel leads the way in the early phase-out of toxic ingredients in industrial adhesives and sealants.
Phthalate-free, PVC-based formulations are designed to phase out current formulas. They provide customers with a future-proof choice that not only meets today’s regulatory environment but also looks ahead to the requirements of the future. In addition to compliance, new Darex COV sealants also contribute real benefits in processing and application, allowing users to comply with more stringent rules like the European REACH regulation while meeting the packaging industry’s increased demand for sustainable packaging along the supply chain.
For several years, phthalates have been under increasing scrutiny by both the scientific community and regulators because of their potential to act as endocrine disruptors. Substances such as DEHP, DBP, and BBP are already classified as toxic to reproduction and prohibited in numerous applications, including consumer goods like toys and cosmetics. The European Commission has included several related compounds in its SVHC (substances of very high concern) category. With this in mind, Henkel made the early strategic decision to move towards phthalate-free formulations within its Darex COV sealants.
“Phthalates are considered endocrine disruptors – substances that disrupt the hormone system – and therefore have long-term health and environmental consequences,” explains Laura Baussà, Market Strategy Manager at Henkel. “With the new Darex COV series, we are offering our customers safe alternatives to protect employees and end users without compromising on performance.”
A central objective in the development process was the design of a one-component sealant system suitable for nozzle application. This system provides consistent viscosity, strong resistance against solvents, ketones and oils, as well as reliable thermal stability. Darex COV 73, one of the range’s leading products, is phthalate-free as well as free from those substances classed as carcinogenic, mutagenic, or toxic to reproduction (CMR). In addition, the new formulation allows lower temperature curing, which reduces energy requirements and helps reduce the application’s carbon footprint.
Darex COV 73 was brought to market readiness through a pilot collaboration with Emballator, one of Sweden’s leading metal packaging producers. During 2024, Emballator switched part of its production lines to the phthalate-free sealant, reflecting a proactive approach towards sustainability. With the installation of Darex COV 73, the firm adhered to regulatory guidance such as the REACH regulation while ensuring high sealing efficiency and ease of introduction into current manufacturing processes.
The wider roll-out of the Darex COV sealants will happen gradually. By means of this launch, Henkel is helping its customers switch to safer, phthalate-free seal systems.