Photochromic Face Shield
WeeTect Photochromic Face Shield (WPFS) also names photochromic shield or photochromic helmet shield. It is made from photochromic coating on injection molded polycarbonate face shield. WeeTect Photochromic Face Shield (WPFS) can be applied to photochromic motorcycle face shield, photochromatic face shield, and other photochromic helmets or photochromic helmet shields.
As WeeTect is a capable photochromic lens manufacturer, WeeTect Photochromic Face Shield (WPFS) is one of the best photochromic face shields with an optical clarify before photochromic tint, and turns to dark from photochromic clear quickly under UV radiation. In advance, WeeTect Photochromic Face Shield (WPFS) can be added more surface treatment such as anti-fog coating, anti-scratch coating, iridium coating and more. As an eye and face protection solution provider, WeeTect holds the know-how of photochromic coating technology. We are glad to co-develop other special motorcycle helmet face shields with you.
Photochromic Face Shield Advantages:
- Convenience: One piece of anti-fog photochromic face shield can fulfill all your different light conditions requirement.
- UV protection: WeeTect Photochromic Face Shield (WPFS) can absorb 100% UV harmful radiation.
- One stop solution: WeeTect Photochromic Face Shield (WPFS)also can do anti-fog coating, hard coating, abrasion resistant coating, iridium coating or other color tinting.
- Reduce cost: As a capable photochromic lens manufacturer, WeeTect can support you to reduce cost.
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PS: Here is a photochromic ebook for you to learn more about photochromic technology
| Item | Property | Test Method | U/M | Value |
| Optical | UV Resistant | EN170 | % | 99.99% |
| Haze | ASTM D 1003 | % | 0.37 | |
| VLT Before Photochromic Tint | ASTM D 1003 | % | 87 | |
| VLT Fully Photochromic Tint | ASTM D 1003 | % | 20 | |
| Fully Photochromic Tint Time | WeeTect Method | Second | 30 | |
| Change Back to Photochromic Clear Time | WeeTect Method | Minutes | 3 | |
| Fog Free time | ECE22.05/ECE324 | s | >22 | |
| Fog Free time | Freezing Test | s | no fogging | |
| Mechanical | Hardness 1KG | ISO 178 | H | 1 |
| High velocity impact | ANSI Z87.1 2010 | ft/s | >300 | |
| Cross-Cut tape test | ASTM D 1000 | NA | Pass | |
| Elongation, yield % 7 | ISO 527 | % | 7 | |
| Elongation, break ISO 527 % 110 | ISO 527 | % | 110 | |
| Tensile stress, yield | ISO 527 | Mpa | 60 | |
| Tensile modulus MPa | ISO 527 | Mpa | 2300 | |
| Flexural strength, yield | ISO 178 | Mpa | 100 | |
| Flexural modulus ISO 178 MPa 2500 | ISO 178 | Mpa | 2500 | |
| Izod notched impact, 20 °C | ISO 180-1A | KJ/m² | 65 | |
| Physical | Gravity | ISO 1183 | g/cm³ | 1.2 |
| Water absorption, 24 hours | ISO 62 | % | 0.15 | |
| Thermal | Mold shrinkage | ISO527 | % | 0.5-0.7 |
| Thermal expansion | ASTM D696 | 1/ °C | 7×10-5 | |
| Vicat Softening Temp., Rate B / 120(base sheet) | ISO 306 | °C | 150 | |
| HDT, 0.45 MPa | ISO 75/Be | °C | 138 |
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