Koch-Chemie × COLOURLOCK COLOURLOCK "Plastic Primer ND" Primer for Plastics 1000ml

COLOURLOCK Plastic Primer ND — Adhesion promoter for plastic surfaces

What is COLOURLOCK Plastic Primer ND used for? — The primer improves the adhesion of paints, coatings, and repair materials on plastics, stabilizes the surface, and ensures even, long-lasting results in smart repair and refurbishing work.

COLOURLOCK Plastic Primer ND is the professional primer for all plastic surfaces that require reliable adhesion before painting or repair. Especially on interior parts such as plastic trim, grab handles, consoles, or trunk components, plastics often have poor adhesion properties: Plasticizers, smoothness, microstructures, or silicone residues prevent coatings from adhering properly. Plastic Primer ND creates a secure, uniform adhesive base and makes repairs visibly more stable and visually more even — ideal for cars, furniture, RVs, and many plastic components.

• Strong adhesion improvement – The primer anchors itself to various plastics and ensures excellent bonding of paint and repair products.
• Even surface stabilization – Reduces adhesion problems on smooth, slightly oily, or slightly textured plastic surfaces.
• Professional basis for refurbishing – Indispensable before COLOURLOCK plastic paints or structural repairs.

Adhesion Technology & Mechanism of Action on Plastics

Plastic Primer ND contains specially developed adhesion promoters that attach to polymeric surfaces and increase their surface tension. Plastics such as ABS, PVC, or PP often have very smooth or slightly greasy surfaces that absorb paint poorly. After application, the primer forms a micro-fine, transparent adhesion matrix to which subsequent coatings can optimally anchor. The formulation is designed not to create a thick layer, but to preserve the natural structure of the plastic. This allows paint systems to cover more evenly and show fewer detachment or edge problems.

Preparation, Application & Perfect Base for Paint Application

Before applying Plastic Primer ND, the surface should be thoroughly cleaned and degreased, ideally with suitable cleaners or GLD/Degreaser (link placeholder). The primer is applied thinly and evenly — a fine film is sufficient. After a short flash-off time, the component is ready for painting or structural repair. Thick layers should be avoided, as they tend to worsen adhesion. Especially in heavily stressed areas such as door handles, door sills, or center console surfaces, the primer ensures that subsequent coatings remain more durable and abrasion-resistant.

Results, Areas of Application & Distinction from Leather Primers

After using Plastic Primer ND, a significantly more adhesive plastic surface is created, on which paints adhere evenly and stably. The result is cleaner repairs, less chipping, and a visually harmonious surface. The primer is suitable for all vehicle interior parts, trunk linings, plastic housings, furniture surfaces, and other components made of common plastics. It does not replace cleaning or repair compound, but forms the necessary basis for COLOURLOCK plastic paints, structural fillers, or flexible coatings. Unlike Leather Primer, Plastic Primer ND is specifically designed for plastics and does not work on leather surfaces.

Frequently Asked Questions about COLOURLOCK Plastic Primer ND

On which plastics does the primer work?

On most common plastics in the automotive and furniture sector, such as ABS, PVC, PP, and textured interior parts.

Is the primer visible after application?

No. It dries transparent and forms only an ultra-fine adhesive film.

Do I need to degrease before applying the primer?

Yes. Residues such as silicones or greases can severely impair adhesion.

Can I also use the primer on leather?

No. It is developed exclusively for plastics. Leather Primer is suitable for leather.

How long does the adhesion improvement last?

Permanently. The adhesive film remains stable and forms a reliable basis for all subsequent coatings.

Last updated: 02.12.2025 — Author: Daniel (Detailing1)