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Primer · ZN-240

1K Plastic Primer

Single-component adhesion-promoting primer that forms a strong bond on PP, PP/EPDM and ABS plastics. For bumpers, mirror covers and exterior trim parts.

  • 1K · Single-component
  • Plastic
Request TDS / SDS
PLASTIC PRIMER1K PRIMER1KZN-2401 L

Packaging

1 L

Overview

What is 1K Plastic Primer?

ZN-240 1K Plastic Primer is a single-component adhesion promoter developed to create a strong bond between plastic surfaces and the paint system. PP, PP/EPDM and ABS, the plastics widely used for exterior automotive parts, have a low surface energy that makes it difficult for paint to adhere. Applied in a thin, closed coat, ZN-240 provides a reliable base for the adhesion of subsequent layers on these surfaces.

It is designed for bumpers, mirror covers, trim and similar exterior plastic parts. As it needs no hardener, it is used without mixing; after a short flash-off, 2K primer or basecoat can be applied on top. Some plastics, such as PE (polyethylene), can have different surface properties, so on these materials, and on parts whose plastic type cannot be identified, an adhesion test should be carried out on a hidden area before application.

ZN-240 is the first layer of the plastic part painting system. The surface is cleaned with ZN-530 Surface Cleaning Thinner; after the flash-off, ZN-250 Joker Multi-Purpose Primer or ZN-210 4+1 Acrylic Primer Filler is applied to parts that need filling, while flawless new parts can go straight to basecoat. For flexible parts, refer to the Technical Data Sheets (TDS) of the relevant products for the flexibility requirements of the upper coats.

Key features

  • Strong adhesion on PP, PP/EPDM and ABS plastics
  • No hardener required; applied directly
  • Effective adhesion base in a single thin, closed coat
  • 2K primer or basecoat after a short flash-off
  • Ideal for bumpers, mirror covers and trim parts
Technical specifications

Technical data

Values are typical at 20 °C and 65% relative humidity. Please review the product's current Technical Data Sheet (TDS) before application.

1K Plastic Primer technical data
Product type1K, single-component adhesion promoter
HardenerNot required
ThinningReady to use; do not thin
Pot lifeSingle-component; no pot life limit
Spray gun nozzle size / pressure (HVLP)1.2–1.3 mm / 2.0 bar
Number of coats / dry film thickness1 thin, closed coat / 5–10 µm
Flash-off time (20 °C)10–15 min; then 2K primer or basecoat
SandingDo not sand the primer coat; scuff the surface beforehand
ColourTransparent

Pack sizes

  • 1 L

Technical documents

Our technical team will send the Technical Data Sheet (TDS) and Safety Data Sheet (SDS) you request by email.

Request TDSRequest SDS

Drying times vary with temperature, humidity, film thickness and air circulation. Consult our technical team about special conditions.

Application

Step-by-step application

The recommended application sequence for a professional result.

  1. 01

    Identifying the plastic

    Check the material code on the inside of the part (e.g. >PP<, >PP/EPDM<, >ABS<). On PE or unidentifiable plastics, carry out an adhesion test on a hidden area.

  2. 02

    Cleaning

    Wash the part with warm, soapy water and dry it. Then wipe it with ZN-530 Surface Cleaning Thinner and immediately wipe it off with a clean, dry cloth to remove mould release agent, grease and silicone residues.

  3. 03

    Scuffing

    Scuff the surface with a grey scuff pad or P400 abrasive until all the gloss has gone. Remove the dust and repeat the cleaning.

  4. 04

    Application

    Stir the product thoroughly. Apply a single thin, closed coat with an HVLP gun fitted with a 1.2–1.3 mm nozzle at approximately 2.0 bar inlet pressure; avoid heavy coats.

  5. 05

    Flash-off

    Allow 10–15 min at 20 °C. Apply the next coat within the maximum time stated in the TDS.

  6. 06

    Next coat

    If filling is required, apply ZN-250 Joker Multi-Purpose Primer or ZN-210 4+1 Acrylic Primer Filler; on flawless surfaces, apply basecoat directly.

Storage and safety

  • Store in the original, closed container at 5–25 °C in a dry, well-ventilated area.
  • Shelf life in the unopened container is typically 12 months; close the lid tightly after use.
  • The product and its vapours are flammable; keep away from heat, sparks, open flames and direct sunlight.
  • When spraying, wear suitable respiratory protection, such as a mask with A2/P2 combination filters, as well as gloves and safety glasses; work in a well-ventilated area. Always read the product's Safety Data Sheet (SDS).
System compatibility

Products used together

Zenova products tested in the same system as this product, which give the best results together with it.

  • 2K
    PrimerZN-250

    Joker Multi-Purpose Primer

    Hybrid 2K primer for use wet-on-wet or as a sandable primer filler. Adheres to aluminium, galvanised steel, factory coatings and existing paintwork.

    View product
  • Zenova ZN-210 4+1 Acrylic Primer Filler packaging
    2K
    PrimerZN-210

    4+1 Acrylic Primer Filler

    High-build 2K acrylic primer filler: covers filled areas, does not sag, sands easily and creates a smooth, isolating base for the topcoat.

    View product
  • 1K
    ThinnerZN-530

    Surface Cleaning Thinner

    Removes grease, silicone, wax, tar and sanding dust before painting, priming and filling; cuts the risk of silicone craters (fisheyes) for more reliable adhesion.

    View product
  • 2K
    PrimerZN-220

    5+1 HS Acrylic Primer

    Premium 2K HS acrylic primer that delivers high film build even in a single coat. Fills micro-pores, flows out perfectly and dries fast.

    View product

Application systems that include this product

Frequently asked

Questions about 1K Plastic Primer

How can I identify the type of plastic?

Automotive plastic parts usually carry a material code such as >PP<, >PP/EPDM< or >ABS< on the inside. ZN-240 is suitable for all three of these plastics. On other plastics such as PE, or on parts where the code cannot be read, we recommend first carrying out an adhesion test on a hidden area.

Should I also use it on a new, factory-primed bumper?

It is not needed where the factory primer is intact; once these areas have been scuffed and cleaned, you can continue directly with the system. Apply ZN-240 only to areas where the primer has been sanded through and bare plastic is showing.

Can the plastic primer be sanded?

No. ZN-240 forms a very thin adhesion layer that loses its function if sanded. All sanding and scuffing must be done before priming; once the primer has been applied and the flash-off time has elapsed, move straight on to the next coat.

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