Spray Primer for Plastic Montana EX014PR0914 400ml — plastic primer spray, adhesion promoter

Montana EX014PR0914 is a 400 ml spray primer formulated for plastic surfaces. Designed as an adhesion promoter and preparatory coating, this primer improves paint grip on polypropylene and other plastics, creating a stable base layer for subsequent topcoats. It is suitable for hobby, DIY and repair jobs where uniform coverage and reliable adhesion are required before applying acrylic, synthetic or nitro paints.

Advantages

The primer dries quickly and provides flexible, long-lasting adhesion on treated plastics. It is easy to apply in thin, even layers and can be overcoated shortly after application. The formulation offers excellent grip to polypropylene (modified EPDM) and good compatibility with common topcoat systems, helping to prevent peeling and uneven coverage on plastic substrates.

Suitable for

• Preparing polypropylene and other plastic parts for painting
• Hobby models, plastic kits and DIY crafts
• Small repair tasks on automotive plastic trims and exterior fittings
• Surface preparation before applying acrylic, synthetic or nitro topcoats

Key specifications

• Volume: 400 ml spray can
• Surface compatibility: formulated for polypropylene (modified EPDM); test on other plastics before use
• Touch dry: approx. 10 minutes (test method referenced)
• Fully dry: approx. 20 minutes (test method referenced)
• Dry film thickness: approx. 15 µm per coat
• Adhesion: classified as 4B (test method referenced)
• Coverage: approx. 2 m² per 400 ml when applying in thin continuous coats
• Heat resistance of dried coating: up to +100°C
• Recommended application temperature: ambient min. +8°C, surface min. +5°C
• Maximum relative humidity during application: 85% R.H.

How to use

Shake the can vigorously for about one minute after the mixing ball is heard to ensure the product is homogeneous. Apply only to clean, dry and oil-free surfaces; perform a test on any unfamiliar plastic. Spray in thin, even layers rather than a single heavy coat, allowing the primer to build up in multiple light passes. The product can be overcoated after approximately ten minutes with compatible topcoat paints. After use, invert the can and spray briefly to clear the valve; replace a blocked nozzle if necessary. Use in well-ventilated areas and avoid spraying on energized electrical equipment.

Usage recommendations

For best results, prepare surfaces by cleaning and degreasing before application and perform a small compatibility test on the target plastic. Apply three thin coats rather than one thick coat, maintain recommended ambient and surface temperatures during application, and allow the specified flash-off time before overcoating. Ensure adequate ventilation and follow standard safety precautions for solvent-based aerosols.