PRODUCT SPECIFICATIONS
THE BEST BLACK FOR YOU
Material Types
We offer ultra-black products in a variety of materials for a range of applications. This guide is to help you choose the right black for you if you aren't sure which would be best for your needs.
Our current product offerings can be divided by material type - polyurethane foam sheets, nylon/rayon fabrics, and a water-based acrylic paint. All products, excluding Musou Black Fabric FR, are RoHS and REACH certified - safe and non-toxic.
| Type of Material | Polyurethane Foam | Fabrics | Paint |
|---|---|---|---|
| Products |
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| Key Features |
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| Applications |
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Total Hemispherical Light Reflectance Rate Comparison
VISIBLE LIGHT (250–750 nm)
Total hemispherical reflectance, angle of incidence 8°, measured from 250 to 2500 nm in 5 nm steps; 250–750 nm shown, plotted every 5 nm. Representative values, not a guarantee.
VISIBLE TO NEAR-INFRARED (250–2500 nm)
Total hemispherical reflectance, angle of incidence 8°, measured from 250 to 2500 nm in 5 nm steps and plotted every 25 nm. Representative values, not a guarantee.
Technical Note: Total reflectance values of our materials are measured based on the industry-standard AOI 8° index.
By combining both diffuse reflection (scattered light) and specular reflection (mirror-like reflection), we provide a comprehensive evaluation of light absorption—essential for eliminating stray light in high-precision optical systems.
Light Absorption Rates
| Product Name | UV 250nm | VL 500nm | N-IR 950nm | N-IR 1500nm |
|---|---|---|---|---|
| Fineshut SP | 98.3% | 98.8% | 98.8% | 98.6% |
| Fineshut KIWAMI | 99.2% | 99.3% | 99.3% | 99.3% |
| Fineshut KIWAMI XX | 99.4% | 99.5% | 99.4% | 99.4% |
| VL Flock Sheet | 99.3% | 99.6% | 90.7% | 55.0% |
| IR Flock Sheet | 99.7% | 99.7% | 99.7% | 99.5% |
| Musou Black Fabric KIWAMI | 99.9% | 99.9% | 62.3% | 81.0% |
| Musou Black Fabric FR | 99.8% | 99.8% | 53.4% | 77.3% |
| Musou Black Paint (Air-brush) | 99.2% | 99.4% | 98.0% | 89.3% |
| Musou Black Paint (Brush) | 98.7% | 99.0% | 96.5% | 81.9% |
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Quick Selection Guide
■ Visible Light (400-700nm): For absolute blackness, Musou Black Fabric KIWAMI is the premier choice, achieving an industry-leading 99.9% absorption rate.
■ Ultraviolet (250-400nm): Both Musou Black Fabrics and Fineshut (Foam) series maintain stable, high performance.
■ Near-Infrared (700-2500nm): IR Flock Sheet is specifically engineered to excel where others drop off, maintaining over 99% absorption even at 1500nm.
■ Versatility: The Fineshut (Foam) series offers consistent, durable performance across UV to IR ranges, ideal for internal camera/sensor housings.
*Note: For applications requiring fire resistance, Musou Black Fabric FR provides a balanced solution of safety and high optical performance.
Our "Foam" series consistently absorbs light across UV to N-IR ranges due to the uneven structure of the foaming process and carbon atom blending. For standard applications, the VL Flock Sheet offers a cost-effective solution for the visible light spectrum, while the IR Flock Sheet provides superior absorption extending into the infrared range. Musou Black Paint performance varies by application; air-brushing is recommended for optimal results.
Sizes & Other Information
| Product Name | Available Dimensions & Tape Options | Thickness (mm) | Composition & Quick Notes |
|---|---|---|---|
| Fineshut SP 0.2 |
Sheet: 245x200mm (9.6 x 7.9 in) / 500x400mm (19.7 x 15.7 in)
Roll: 500mm (19.7 in) wide × 1–10m (3.3–32.8 ft) length (available in 1m increments)
Tape: 3M 93015LE / DIC #8616UJ / No tape
|
0.22 ± 0.05 (≈ 0.009 in) |
Polyurethane foam. Omni-directional light absorption. High absorption for tight spaces. |
| Fineshut SP 0.4 |
Sheet: 245x200mm (9.6 x 7.9 in) / 500x400mm (19.7 x 15.7 in)
Roll: 500mm (19.7 in) wide × 1–10m (3.3–32.8 ft) length (available in 1m increments)
Tape: 3M 93015LE / DIC #8616UJ / No tape
|
0.40 ± 0.05 (≈ 0.016 in) |
Polyurethane foam. Omni-directional light absorption. Excellent thickness precision. |
| Fineshut KIWAMI |
Sheet: 190x53mm (7.5 x 2.1 in) / 230x190mm (9.1 x 7.5 in) / 480x280mm (18.9 x 11.0 in) (Max size)
Tape:Pre-laminated with 3M 93015LE
|
0.37 ± 0.05 (≈ 0.015 in) |
Polyurethane foam. Darker grade. Perpendicular direction light-absorption. Pre-laminated for durability. |
| Fineshut KIWAMI XX |
Sheet: 136x112mm (5.4 x 4.4 in) / 230x190mm (9.1 x 7.5 in) / 330x330mm (13.0 x 13.0 in) (Max size)
Tape:Pre-laminated with DIC #810TB
|
0.71 (≈ 0.028 in) (Reference value) |
Polyurethane foam. Darkest grade. Omni-directional light absorption. Pre-laminated with dedicated industrial adhesive. |
| VL Flock Sheet |
SHEET: A4 (210 x 297mm / 8.3 x 11.7 in)
ROLL: 950mm (37.4 in) wide × 1–10m (3.3–32.8 ft) length (available in 1m increments)
*Adhesive-backed variant available
|
0.9 (≈ 0.035 in) |
Rayon-base / nylon pile. High physical durability. |
| IR Flock Sheet |
SHEET: A4 (210 x 297mm / 8.3 x 11.7 in)
ROLL: 950mm (37.4 in) wide × 1–10m (3.3–32.8 ft) length (available in 1m increments)
*Adhesive-backed variant available
|
0.8 (≈ 0.031 in) |
Rayon-base / rayon pile. Optimized for IR absorption. |
| Musou Black Fabric KIWAMI |
Back-coated / Non-coated available
BC:
SHEETS: A4 (8.3 x 11.7 in) / 500x400mm (19.7 x 15.7 in)
ROLLS: 1100mm (43.3 in) wide × 1–10m (3.3–32.8 ft) length (available in 1m increments)
NON-BC:
ROLLS: 1100mm (43.3 in) wide × 1–10m (3.3–32.8 ft) length (available in 1m increments)
|
1.8 (≈ 0.071 in) |
The BC version offers improved durability, easier handling, and will stick to most surfaces using fabric tapes or glues. |
| Musou Black Fabric FR |
Sheet: A4 (210 x 297mm / 8.3 x 11.7 in)
Roll: 1100mm (43.3 in) wide × 1–10m (3.3–32.8 ft) length (available in 1m increments)
|
1.7 (≈ 0.067 in) |
Flame Retardant version for safety requirements. |
| Musou Black Paint |
Volume: 100mL / 1L / 15L
(3.4 fl oz / 33.8 fl oz / 4.0 gal) |
— | Water-based acrylic. Extremely delicate coating. |
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💡 Technical Notes for Application
- Fineshut Lead Time: Standard width is 500mm (19.7 in). For 1000mm (1m / 39.4 in) width orders of Fineshut SP, please allow up to 2 months for manufacturing.
- Handling Foams vs. Paint: Foam and Fabric products are resilient to slight contact. However, Musou Black Paint is very delicate; physical damage will cause particulate generation and performance loss.
- Painting Coverage: 100mL covers approx. 0.9m² (Brush). For air-brushing to achieve maximum blackness, you will need ~1.4x more paint (~0.64m²/100ml).
- Lamination Note: Fineshut KIWAMI and Fineshut KIWAMI XX are always pre-laminated with tape because the material is too thin to handle safely otherwise.
Double-Sided Tape
In addition to the tapes listed here, we can also laminate other types of tape upon request.
| Name | Thickness (mm) | Features |
|---|---|---|
| 3M 93015LE | 0.15 (≈ 0.006 in) |
PET-based material. Engineered for versatility and long-term reliability, this tape is the industry standard for applications where traditional adhesives struggle to bond. |
| DIC #8616UJ Black | 0.05 (≈ 0.002 in) |
PET-based material. Designed for ultra-thin bonding applications where light-shielding and thickness control are critical. *Please note the release film can be somewhat difficult to peel off. The release film contains PFHxA. |
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Laser-Cutting
We provide a custom cutting service using a laser processing machine to support small lots and prototype parts with short delivery times.
The estimated processing cost can easily be calculated by entering the material and external dimensions of the parts. However, the cost will change depending on the shape, so the official quotation will be provided after receiving the design drawing from you.
Please contact us for the cost calculation tool or a formal quote.
INQUIRY FOR CUTTING
Laser-cut parts
Fineshut SP (Right)