Priomat® Elastic Adhesion Primer 3400 is a transparent, ready-to-use adhesion primer designed for use on uncoated plastic substrates. It provides excellent adhesion even on difficult plastics and can be applied directly to degreased, untreated plastic surfaces without the need for additional priming.

Ideal for exterior plastic automotive parts, this primer is radar capable, tintable with Permafleet Mixing Concentrates 600 or Permasolid Clear Coat Color Additives, and is also available in an aerosol format for spot repairs and small applications.

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Application Instructions

Surface Preparation:

• Ensure all plastic parts are clean and free from contaminants.

• For new exterior plastic parts:

  • Temper at 60–65°C for 60 minutes to remove release agents.

  • Perform the first clean with a pad soaked in Permaloid Silicone Remover 7010 (ultrafine pad).

  • Follow with a second clean using a cloth moistened with the same silicone remover.

  • Always use clean cloths and replace frequently.

• For repairs or previously coated plastic parts:

  • Sand the surface and clean thoroughly using the same method as above.

Mixing:

• Ready for use — no mixing or thinning required.

Spray Gun Setup:

• Compliant: 1.2–1.3 mm nozzle | 1.5–2.0 bar inlet pressure

• HVLP: 1.3–1.4 mm nozzle | 0.7 bar atomisation pressure

Application:

• Apply 1–2 medium coats.

• Allow 5 minutes flash-off between coats.

• Final flash-off: 10–15 minutes before overcoating.

Film Thickness:

• 2–5 µm dry film thickness

Coverage:

• Approx. 84 m² per litre at 1 µm DFT (theoretical)

Overcoating:

• Suitable for overcoating with 2K elastified surfacers or compatible paint systems.

Clean Up:

• Clean all equipment immediately after use with a suitable solvent-based gun cleaner.

Additional Notes:

• Shake well before use.

• Material should be at room temperature (18–25°C) before application.

• Can be tinted with Permasolid Clear Coat Additives up to 5%.

• Newly coated plastic parts should not be washed with high-pressure cleaners for at least 6 weeks.

• Refer to the Spies Hecker Plastic Painting System TDS for detailed substrate compatibility.