Imperiflex 640 is a high-gloss transparent lacquer specifically formulated for finishing flexible materials: polyurethane foams, urethane rubbers and EVA foam. Its flexible formulation prevents cracking when bending or deforming the piece, making it the go-to option for props, cosplay and scenography that require a durable and resistant finish. This GALLON KIT contains 3.78 L distributed across four cans according to a 2:1:1 mix ratio.
Technical specifications
| Parameter | Value |
|---|
| Total volume | 3.78 L (GALLON KIT) |
| Kit contents | 2 cans of Clear (quart) + 1 can of Thinner (quart) + 1 can of Hardener (quart) |
| Mix ratio (by volume) | 2 parts Clear : 1 part Thinner : 1 part Hardener |
| Finish | Transparent gloss |
| Flexibility | High — does not crack on flexible substrates |
| Compatible substrates | Polyurethane foams, urethane rubbers, EVA foam |
| Additional function | Sealing base coat and top coat for chrome systems |
| Use | Professional |
What it is used for
Imperiflex 640 is designed for any application where a bright, flexible finish is needed that can withstand movement without cracking. It is essential in the finishing chain for special effects pieces, prop making and technical costumes.
- High-gloss final finish on props and cosplay armour made from foam or urethane rubber
- Sealing and protection of painted or decorated EVA foam pieces
- Transparent base coat prior to applying chrome systems with Alumaluster to achieve flexible chrome surfaces
- Final top coat that seals and protects the chrome layer, with the option to add alcohol dyes to modify the tone
- Theatre and film scenography requiring glossy surfaces resistant to heavy use
- Fabrication of masks, helmets and technical costume pieces in soft materials
How to use it
- Prepare the surface. For maximum gloss, the surface you apply Imperiflex to should be black and shiny. You can achieve this by making the piece from a black material (for example, black-tinted urethane rubber cast in a glossy mould) or by first applying a coat of gloss black paint.
- Measure the components. Mix by volume: 2 parts Clear + 1 part Thinner + 1 part Hardener. Use graduated containers to ensure the exact ratio.
- Mix thoroughly. Combine the three components and stir or shake well until a homogeneous mixture is obtained.
- Apply the first base coat. Apply Imperiflex to the piece as a base and sealing coat. Allow to dry completely according to the environmental conditions in your workshop.
- Optional — chrome finish. If you want a chrome finish, apply one or more coats of Alumaluster over the dry Imperiflex base.
- Apply the final top coat. Seal the chrome or decoration with a final coat of Imperiflex. At this stage you can add alcohol dyes to achieve coloured effects over the chrome.
- Allow to cure. Allow full curing before handling or bending the piece.
Safety warning: Imperiflex 640 contains solvents and polyurethane hardeners. Always work in a well-ventilated space or with local extraction. Use a respirator with organic vapour filters, nitrile gloves and safety goggles. Read the full Safety Data Sheet before handling the product. Do not ingest. Keep away from fire.
Usage tips
The base surface determines the final result
Imperiflex is transparent, so the colour and texture of the surface it is applied to will show through it. For maximum gloss, always work over gloss black. A matte or light-coloured surface will drastically reduce the visual impact of the finish. If your piece is light-coloured, apply a gloss black primer first before using Imperiflex.
Temperature and humidity affect working time
Like any two-component polyurethane system, Imperiflex is sensitive to environmental conditions. At low temperatures curing slows down; above 25 °C working time shortens. Avoid applying in high relative humidity, as this can affect the final appearance. In the workshop, the ideal conditions are between 18 °C and 25 °C with humidity below 60%.
Managing the Gallon Kit for long-duration projects
Once the components have been opened and mixed, the mixture has a limited pot life. Only prepare the amount you will use in each session. Unmixed components, properly sealed, retain their properties for much longer. If you are working on projects with many pieces or across multiple sessions, the Quart Kit (946 ml) may be more practical to avoid waste.
Frequently asked questions
Can it be applied to any flexible material?
Imperiflex 640 is formulated primarily for polyurethane foams, urethane rubbers and EVA foam. On other flexible substrates (fabrics, latex, etc.) behaviour may vary. It is always advisable to test on a small area before applying to the whole piece.
What happens if I don't follow the 2:1:1 mix ratio?
An incorrect ratio can result in poor curing: the lacquer may remain tacky, soft or fail to cure properly. Always measure by volume with precision. The ratio is 2 parts Clear, 1 part Thinner and 1 part Hardener.
Can I use this lacquer to achieve chrome finishes?
Yes. Imperiflex 640 is both the base coat and the top coat in the flexible chrome system. The process is: first coat of Imperiflex as a sealer, coats of Alumaluster for the chrome effect, and a final coat of Imperiflex to seal and protect. In the last coat you can add alcohol dyes to achieve coloured chrome effects.
Can it be applied with a spray gun?
Yes, Imperiflex 640 is designed for spray gun application. The inclusion of Thinner in the mixture provides the right viscosity for spraying. Adjust the nozzle and pressure according to your equipment and carry out test sprays on a sacrificial surface first.
How many coats are needed for a good finish?
In general, one base coat and one top coat are sufficient to seal and add gloss. If the starting surface is not perfectly smooth or the gloss is not enough with a single pass, you can apply additional coats, allowing drying time between them.
Can it be tinted to achieve coloured finishes?
Yes, but only in the final coat (top coat). Add alcohol dyes to the already prepared Imperiflex mixture to modify the tone. This technique is especially useful over Alumaluster chrome finishes to achieve gold, copper or coloured chrome effects.
What is the difference between the Gallon Kit and the Quart Kit?
The only difference is volume. The GALLON KIT contains 3.78 L (4 cans in a 2:1:1 ratio) and is ideal for large projects or productions with many pieces. The Quart Kit (946 ml) is better suited for one-off projects or when you want to minimise waste from mixed material.
Is there a risk of inhibition as with platinum silicones?
No. Imperiflex 640 is a polyurethane system, not an addition-cure silicone, so there is no risk of inhibition from contact with sulphur or other materials. The risks to be aware of are those typical of solvent-based systems: adequate ventilation and personal protection.
