VL Flock Sheet and Musou Black Fabric KIWAMI are optimized for the visible-light spectrum. IR Flock Sheet extends that absorption deep into the near-infrared (out to 2500nm), making it the right choice when your application involves LiDAR, near-infrared sensors, IR cameras, or astrophotography. If your use case is purely visible light and doesn't touch NIR, our visible-optimized products may be a better fit.

In our measurements against a representative velvet-surface competitor product, both looked similarly dark below ~700nm, but the competitor's reflectance climbed past 20% by 950nm and stayed there through 1500nm. IR Flock Sheet measured 0.30% at 950nm and 0.45% at 1500nm under the same test conditions, a large, sensor-relevant gap even though both appear "black" to the eye.

We don't recommend it for cleanliness-critical internal optics. Independent particle-emission testing found no measurable dust at rest, but tapping the material generated a meaningful particle count, one of the higher figures among our flocked product line. For dust-sensitive environments, our FINESHUT polyurethane-foam series is a better fit; it does have measured performance out to 1500nm, though at a higher reflectance than IR Flock Sheet in that range, so it's a trade-off between low particle-shedding and near-infrared absorption depth; we're happy to advise on the right choice for your setup.

No. IR Flock Sheet is not water-resistant, and wet-condition crocking (color transfer) fastness is rated Grade 1, very low. Moisture can flatten the pile, increase local reflectance, and leave a permanent mark. We recommend indoor use only.

There is no official heat-resistance rating. Under direct sunlight, IR Flock Sheet's own surface temperature measured only about 10°C above ambient (~43°C; see the next question for that comparison). An in-house (non-third-party) test held the adhesive variant at 85°C/85%RH for roughly 200 hours with no measured optical or adhesive degradation, but this isn't a guarantee of long-term real-world performance. We recommend testing with a sample first, especially for permanent adhesive-mounted installations in environments that get hot (such as a vehicle dashboard), where we don't yet have long-term high-temperature adhesive performance data.

No, IR Flock Sheet does not carry a flame-retardant certification and will ignite under direct flame. If your application involves high-output light sources (solar simulators, lasers) and you're concerned about heat buildup or fire risk, please contact us; actual risk depends heavily on the specific setup, and we won't make blanket safety claims either way. For projects where flame resistance is a priority, our Musou Black Carpet (flame-retardant certification as a carpet product is in progress, with completion expected in the second half of 2026) may be worth discussing, though its wall-mounted flame performance is untested.

The flocked pile structure has a very high surface area, which helps it release absorbed heat efficiently. In our own testing, IR Flock Sheet reached only about 10°C above ambient (~43°C) under direct midsummer sun, versus roughly 80°C we'd expect from a low-surface-area material like sheet metal in the same conditions. Very intense or focused light sources may behave differently, so we'd still suggest a real-world test for high-intensity setups.

IR Flock Sheet has an established track record in ground-based JAXA test facilities (star-tracker darkrooms, space-simulation chambers). That said, in third-party ASTM E595 outgassing testing, its TML (3.86%) and CVCM (0.14%) both came in above commonly cited spaceflight-material guideline values (typically ≤1.0% TML, ≤0.1% CVCM). Prior facility use doesn't mean every application automatically qualifies; outgassing suitability depends on quantity, placement, and proximity to contamination-sensitive optics, so please share your specific requirements for an individual assessment.

Yes. Our precision cutting service can machine your design, from a single prototype to full production runs, based on your CAD or design data. Note that narrower slit widths than our standard 950mm roll incur additional slitting and material-loss charges; for large overseas orders it can sometimes be more cost-effective to purchase a standard-width roll and slit it locally.

Yes. IR Flock Sheet is available both with an adhesive backing and without; check the specification table above and choose the type that fits your needs.

We supply the material only and cannot arrange sewing ourselves. Because it's a piled fabric, the flock can also foul sewing equipment, so the pool of sewing shops able to work with it is limited, and typically only for flat seams, not pleated or gathered curtain styles. You're welcome to source a sewing partner locally; we're happy to advise on material handling.

IR Flock Sheet is not subject to Japan's list-based export controls. However, because its infrared-absorbing properties could have military-adjacent uses, it falls under Japan's "catch-all" export control provisions. For shipments outside our standard trusted-destination list, we require end-use and end-user information before we can process the order, and higher-risk destinations may need additional review. Please reach out with your shipping destination and intended use so we can confirm feasibility.

We don't provide free samples, but you can purchase a standard cut size (starting at A4) from our online store with no minimum order, which is an easy way to evaluate the material firsthand. For high-volume or roll-quantity orders, please contact us with your project details; orders are made to order, with roughly 3–4 weeks lead time, and shipments over one roll (~20m) require a direct inquiry. Note we're unable to ship to PO boxes or military addresses.

The reflectance figures on this page (0.26% / 0.30% / 0.45% at 550 / 950 / 1500nm) are representative measured values, not a per-shipment guarantee. If your incoming inspection requires a guaranteed ceiling rather than a reference figure, we can commit to ≤1.0% in the visible range, derived from our worst-case pile-lay testing; please let us know if you need this in writing.

Not yet. Our published heat data (surface temperature under direct sunlight, and the 85°C/85%RH adhesive test) does not include dedicated UV exposure testing. We recommend indoor or otherwise UV-controlled use until we have long-term data to share, and are happy to discuss your specific exposure conditions.

No. We don't issue a formal certificate of conformance or lot report as standard. If you need supporting documentation, we can prepare a paid measurement report for a specific production lot (reflectance measured with our in-house JASCO V-780 integrating-sphere spectrophotometer, plus infrared-camera imaging and thickness); this is a summary of our own sample measurements, not a certified third-party report. Third-party lab testing is also available on request, but timeline and cost need to be discussed separately.