Koch-Chemie × COLOURLOCK COLOURLOCK "Leather & Plastic Paste" Heat-Curing Filler for Quick Repairs 1000ml

COLOURLOCK Leather & Plastic Paste — Heat-Curing Filler for Leather & Plastic

What is COLOURLOCK Leather & Plastic Paste used for? — This heat-curing filler repairs deep cracks, holes, and material loss in leather and plastic, curing to be particularly stable and durable under heat.

COLOURLOCK Leather & Plastic Paste is a professional, heat-curing filler for repairing heavily damaged leather and plastic surfaces. It is ideal for deep cracks, holes, breaks, edge damage, and material loss where conventional fillers are no longer sufficient. Targeted heat curing creates a particularly strong, dimensionally stable repair base that can then be sanded, textured, colored, and sealed.

• Heat-curing & highly stable – Ideal for structural repairs under high stress.
• For leather & plastic – Versatile for automotive and furniture applications.
• Perfect repair base – Optimal for building up, shaping, and subsequent finishing.

Heat-Curing Technology & Mechanism of Action

Leather & Plastic Paste is based on a special polymer formula that only fully hardens under heat. Controlled heating (e.g., with a heat gun) creates a particularly hard, resistant structure that can withstand strong mechanical stress. The paste shrinks very little, remains dimensionally stable, and is excellently suited for rebuilding edges, shapes, and missing material – both on leather and plastic surfaces.

Application, Coverage & Best Practices

Before application, the surface should be clean, dry, and free of grease. COLOURLOCK Leather & Plastic Paste is applied to the damaged area with a spatula or modeling tool and roughly shaped. The paste is then cured with controlled heat. After cooling, the repaired area can be sanded, smoothed, and further textured. Depending on the type of damage, the paste can be built up in layers. This is followed by color application and sealing with a top coat.

Results, Areas of Use & Demarcation

After curing, a very strong, durable repair area is created that is ideal for further processing. Leather & Plastic Paste is suitable for car seats, door panels, center consoles, steering wheels, furniture, plastic trim, and interior parts. It is not a fine filler for small scratches but a structural repair paste for larger damages. For fine surface corrections, a classic filler or Super Filler is recommended afterwards.

Frequently Asked Questions about COLOURLOCK Leather & Plastic Paste

Why is the paste heat-curing?

Heat ensures maximum strength and dimensional stability for structural repairs.

Can I use the paste on plastic?

Yes, it is specially developed for leather and many plastics.

Can the paste be sanded?

Yes, very well after full curing.

Is backing necessary?

For holes or severe cracks, backing is recommended.

Can I dye it afterwards?

Yes, after sanding, the surface can be dyed and sealed normally.

Last updated: 12.12.2025 — Author: Daniel (Detailing1)