UV Maskings

UV-Curable Masking for Precise Surface Protection

UV-curable masking materials from Hoenle (formerly Panacol) provide reliable, temporary surface protection during demanding industrial processes. Ideal for blasting, peening, chemical stripping, plating, anodizing and other surface treatments, they protect selected areas with precision.

Applied as liquids or gels, the materials adapt to complex geometries and cure within seconds under UV light. Traditional masking materials such as tapes, lacquers, and waxes can be labor-intensive to apply or provide inconsistent protection. Hoenle UV masking materials create a protective barrier exactly where it is needed, including on edges, contours and cavities. Their fast curing and flexible application methods support efficient, repeatable manufacturing processes. Depending on the application, the cured mask can be removed residue-free by peeling, water dissolution or thermal treatment.

Precision Masking With UV Curable Materials

Hoenle’s family of UV light curable mask materials can be easily applied. A single application of the uncured liquid mask by syringe, brush, dip, or spray.  The masks are available in many viscosities to accommodate a wide variety of component configurations and applications.

The UV maskings cure within seconds under UV or visible light sources. The cured masking provides consistent protection from high impact particulates, hot acids, alkali solutions, plating, and paint during surface treatment processes.

After surface treatment, the maskings can be easily removed residue-free by peeling, dissolving, or incinerating, depending on the masking product.

Key benefits of UV maskings:

  • High precision: Protect selected surfaces, edges and cavities.
  • Fast curing: Cure within seconds under suitable UV light.
  • Flexible application: Apply by syringe, brush, dipping, spraying or automated dispensing.
  • Reliable protection: Formulations designed for specific mechanical, chemical and thermal conditions.
  • Fast and residue-free removal

Holes are protected using a liquid uv masking before surface treatment

From Application to Removal in Seconds

UV-curable masking combines precise application, rapid curing and clean removal. This streamlined process can help reduce cycle times and integrate masking into existing production lines:

1. Apply
Apply the liquid mask by syringe, spraying, dipping or automated dispensing, depending on the component and production requirements.

2. Cure
Use a compatible LED-UV or broad-spectrum UV system to cure the material within seconds.

3. Process
Carry out the required surface treatment while the cured mask protects designated areas.

4. Remove
Remove the mask by peeling, hot-water dissolution or thermal treatment, depending on the formulation and application.

Our UV Maskings For Industrial Surface Treatments

Hoenle offers UV-curable masking materials for a wide range of surface treatment processes, with formulations tailored to different process conditions and protection requirements.

UV Masking Usage Viscosity [mPas] Base Curing Special Properties Removal Method
  • UV mask for metal finishing
200-400 (Brookfield LVT, 25 °C, Sp. 2/ 60 rpm) acrylate UV/VIS
  • Moderate adhesion
  • Used for steel, aluminum, titanium, nickel and cobalt
  • Water soluble mask, dissolves in hot water
  • Dissolve in hot agitated water
  • UV mask for metal finishing
  • wet acid stripping
10,000-40,000 (Rheometer, 25 °C, 10s^-1) acrylate UV VIS secondary heat cure
  • Hard, very high adhesion, acid resistant
  • Used for maskings on nickel alloys and steel
  • Incinerate @ 900°F or higher
  • (approx. 500°C)
  • UV mask for metal finishing
  • Protective coating of highly polished surfaces
20,000-24,000 (Rheometer, 25 °C, 10s^-1) acrylate UV/VIS
  • High viscosity, green color
  • Good adhesion to steel, aluminium, titanium, nickel and cobalt
  • Removable with hot water
  • Peel after hot water soak
  • (2-3 minutes @ minimum 150°F/65°C)
  • UV mask for metal finishing
  • sandblasting mask
  • masks for orthopedic devices
14,000-17,000 acrylate UV VIS
  • Translucent, moderate adhesion
  • Peel @ room temperature
  • UV mask for metal finishing
40,000-60,000 (Rheometer, 25 °C, 10s^-1) acrylate UV VIS
  • Thixotropic
  • Flexible
  • Low adhesion
  • Peel @ room temperature
  • UV mask for metal finishing
  • Laser drilling
  • Prevention of impingement and spatter
140-155 (Rheometer, 25 °C, 10s^-1) Newtonian fluid acrylate UV/VIS thermal postcure
  • Low viscosity cavity fill
  • Residue-free removal by incineration
  • Incinerate @ 900°F or higher
  • (approx. 500°C)
  • UV mask for metal finishing
  • Plating, peening and grit blasting
  • Masking of turbine components
13,000-16,000 (Rheometer, 25 °C, 10s^-1) acrylate UV/VIS
  • Green color
  • Very high adhesion, peelable mask
  • Good adhesion to steel, aluminum, titanium, cobalt and nickel
  • Removable with hot water at 80 °C
  • Peel after hot water soak
  • (2-3 minutes @ minimum 150°F/65°C)
  • UV mask for metal finishing
  • sandblasting mask
  • wet acid stripping
  • masks for orthopedic devices
8,000-15,000 (Rheometer, 25 °C, 10s^-1) acrylate UV VIS
  • Green color, shear thinning, elastic
  • Removable with hot water at 80°C
  • CMR-free, certified according to ISO 10993-5
  • Peel after hot water soak
  • (2-3 minutes @ mininmum 176°F/80°C)
  • Masking/Protective Coating
  • for Medical Orthopedic Implants
22,000 (Rheometer, 25 °C, 10s^-1) acrylate UV/VIS
  • Green color
  • Elastic, shear thinning, solvent-free
  • High adhesion to steel, aluminium, titanium, nickel and cobalt
  • CMR-free, biocompatible according to ISO 10993-5
  • Removable with hot water at 80°C
  • Temporary Masking
  • Protective Coating against Sandblasting
  • Production of Orthopedical Implants
  • Production of Turbines
6,000 (Kinexus Rheometer, 25 °C, 10s^-1) Acrylate UV / VIS
  • Flexible, green color
  • CMR free
  • Shear thinning
  • Removable with hot water at 80° C
  • Peel after hot water soak
  • Removable with hot water at 80° C

*UV = 320 – 390 nm          VIS = 405 nm

Our Masking and Curing System Solutions

The choice of the ideal masking material depends on the surface treatment, component geometry, required adhesion and removal method.

Hoenle combines application-specific masking materials with compatible UV curing systems to help you find the right solution for your process.

Ask our experts about our one-stop UV masking system solutions.

Contact And Support

Do you have any questions or need support for our masking solutions? Ask our experts.

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