Hoenle Adhesives has launched Vitralit MASK E-20131, a new UV- and visible light-curable masking material that simplifies temporary protection in demanding applications
This mask can protect critical parts from media blasting and aggressive cleaning processes. Vitralit MASK E-20131 can be applied quickly and precisely, then easily removed by peeling, leaving no residue. The new material combines fast curing and excellent flexibility.
Vitralit MASK E-20131 was developed for use in orthopaedic implant manufacturing processes. This mask passed ISO 10993-5 biocompatibility testing to ensure its suitability for medical device applications. It is a solvent-free, one-component acrylate system that provides reliable temporary masking and protective coating performance while supporting modern manufacturing requirements. The liquid masking material is CMR-free and includes shear-thinning rheology, enabling precise, controlled application on complex geometries.
High-value cobalt, titanium, stainless steel and other alloy implants can require surface treatment processes that include cleaning, media blasting, and polishing. As these processes are limited to specific areas on each component, the remaining component surfaces must be protected from damage. Traditional masking materials, such as tapes, lacquers, and waxes, can be labour-intensive to apply, provide inconsistent protection, and may introduce additional environmental and regulatory challenges.
Hoenle’s UV-curable masking material is a modern alternative that delivers fast, reliable protection against aggressive processing conditions such as plating, paint, and high-impact particles. Applied by syringe, brush, dipping, or spraying, Vitralit MASK E-20131 can cure in seconds with UV or visible light. This removable masking solution helps manufacturers improve process consistency, reduce rework, and increase production efficiency.
The translucent green material is supplied ready to use and is compatible with manual dispensing and automated application systems. Its thixotropic behaviour helps prevent unwanted flow while ensuring coverage of targeted areas. The green colour contrasts well with metal surfaces for visibility, supporting visual inspection to ensure the mask was properly dispensed and can be fully removed.
The new masking solution is compatible with 365nm and 405nm LED curing systems, providing optimal efficiency in manual or highly automated production processes. Optional robotic dispensing and curing enable precise masking of complex 3D geometries. When paired with Hoenle’s UV/LED curing systems, masking processes can be optimised for maximum efficiency.
Designed to withstand demanding processes, Vitralit MASK E-20131 offers a typical temperature range of -45°C to +145°C while maintaining flexibility. With an elongation at break of approximately 210%, the cured material can accommodate mechanical stresses and dimensional changes during downstream processing.
When no longer required after surface treatment, coating, machining, or finishing operations, Vitralit MASK E-20131 can be peeled away with no residue left behind. For faster post-processing removal, a short 80°C hot water soak softens the masking material for easier peeling. This feature eliminates the need for aggressive chemicals and helps streamline production workflows.
