Henkel Adhesive Technologies has introduced a new generation of Darex COV sealants designed for metal pail and drum closures. The PVC-based compounds are formulated without phthalate plasticizers and are intended to gradually replace existing products. The transition targets compliance with current and expected regulations and aims to deliver reliable sealing performance with improved occupational and environmental profiles across the packaging value chain.
The launch reflects sustained regulatory scrutiny of phthalates as potential endocrine disruptors. Several substances in this class, including DEHP, DBP and BBP, have been classified as toxic to reproduction and are banned in various applications such as toys and cosmetics. The European Commission has listed related substances as SVHC under REACH. Against this backdrop, Henkel has decided to switch to phthalate-free, non-intentionally added phthalates (NI) formulations in its industrial sealants.
“Phthalates are considered endocrine disruptors, substances that disrupt the hormone system, and therefore have long-term health and environmental consequences,” said 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.”
Development focused on a one-component sealant suitable for nozzle application, combining stable viscosity, resistance to solvents, ketones and oils, and thermal stability. Within the range, Darex COV 73 is formulated without phthalates and avoids ingredients classified as carcinogenic, mutagenic or toxic to reproduction. The phthalate-free formulation also enables a reduction in curing temperature, which can lower energy consumption and decrease the application’s carbon footprint.
Key properties and processing
- Phthalate-free PVC-based compounds for metal pails and drums
- One-component system for nozzle application and consistent laydown
- Stable viscosity and thermal stability during processing
- Resistance to solvents, ketones and oils
- Darex COV 73 formulated without CMR-classified ingredients
- Potential for reduced curing temperature and associated energy savings
Henkel Adhesive Technologies is introducing a new generation of its Darex COV sealants. The formulations do not contain phthalate-based plasticizers and ensure the reliable sealing of metal packaging with improved health and environmental credentials.
Pilot project with Emballator
Darex COV 73 was developed to market maturity in a pilot with Emballator. The Swedish metal packaging producer switched several facilities to the new formulation in 2024. Application under production conditions demonstrated a smooth process and effective sealing performance. The collaboration aligns with Emballator’s sustainability strategy and anticipates regulatory developments such as REACH by adopting technical solutions early.
Rollout and regulatory context
The Darex COV range is being rolled out gradually, with Henkel supporting customers during the transition to phthalate-free sealants. The move responds to tightening legal requirements and broader industry demand for more sustainable packaging solutions, including risk reduction related to SVHC-listed substances and alignment with European regulatory expectations.
With the new Darex COV range Henkel is proactively addressing regulatory developments such as the REACH regulation by adopting technical solutions at an early stage and also actively supporting its customers in the transition to phthalate-free sealants.
