| HS Code | 499625 |
| Product Name | S-LEC Premium UV Blocking Film UA01 |
| Product Type | Polyvinyl butyral (PVB) interlayer film |
| Base Resin | Polyvinyl butyral (PVB) |
| Nominal Thickness | 0.76 mm |
| Appearance Color | Transparent and colorless |
| Uv Blocking Rate | 99.9% or more (wavelength 300-380 nm) |
| Visible Light Transmittance | 90% or more in laminated glass configuration |
| Haze | 1% or less |
| Tensile Strength | Higher than 20 MPa |
| Elongation At Break | Greater than 150% |
| Glass Adhesion | Strong adhesion to glass after autoclave lamination |
| Moisture Resistance | Low moisture absorption with good dimensional stability |
| Weather Resistance | Excellent resistance to yellowing and UV degradation |
| Storage Condition | Store at 5-30°C in a dry, shaded area |
| Application | Laminated glass for architectural and automotive windows |
As an accredited S-LEC Premium UV Blocking Film UA01 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Each package contains one roll of S-LEC Premium UV Blocking Film UA01, sealed in opaque protective film to preserve performance. |
| Container Loading (20′ FCL) | 20′ FCL: rolls of S-LEC Premium UV Blocking Film UA01 packed on pallets, secured, containerized for safe transit. |
| Shipping | Shipped in moisture-proof, UV-protective packaging on sturdy cores to prevent scratches and deformation. Avoid direct sunlight, heat, and humidity during transit. Handle carefully to maintain optical clarity. Standard ground or air freight applies; no special hazardous goods classification required. Store below 30°C in original packaging until use. |
| Storage | Store S-LEC Premium UV Blocking Film UA01 in its original sealed packaging in a cool, dry, well-ventilated area. Avoid direct sunlight, UV exposure, high humidity, and temperatures above 30°C (86°F). Keep away from heat sources and sharp objects. Use within the manufacturer’s stated shelf life to maintain optical clarity and UV-blocking performance. |
| Shelf Life | Shelf life is typically 12 months from manufacture when stored unopened in a cool, dry place away from UV light. |
Laminated windshield production using S-LEC Premium UV Blocking Film UA01 follows a controlled de-airing and autoclave bonding route, but the UV-blocking interlayer requires tighter edge-seal discipline than standard PVB because any exposed interlayer edge can act as a moisture pathway before the final glass-to-glass seal is achieved. A representative automotive stack is 2.1 mm soda-lime float glass / 0.76 mm UA01 / 2.1 mm soda-lime float glass; for acoustic windshields the UA01 outer ply is combined with a tri-layer acoustic core, giving a total interlayer thickness of 1.52 mm to 1.90 mm. The interlayer is conditioned at 18–22°C and 20–30% RH for a minimum of 12–24 h before layup; when the layup room exceeds 60% RH, pre-conditioning in a dehumidified cabinet is required to prevent moisture-related micro-void formation. Pre-lamination is performed on a nip-roller line at 60–90°C with a residual vacuum of −0.08 MPa or lower and a line speed of 1.5–3.0 m/min. Final bonding is completed in an air or oil autoclave at 120–140°C and 1.0–1.5 MPa, with hold time of 30–90 min depending on glass area and total laminate thickness. Center-of-stack glass temperature often lags autoclave air temperature by 10–15°C, so embedded thermocouple verification is required to avoid under-bonded centers. Adhesion is monitored by pummel testing on a 0–10 scale, with automotive fabricators typically accepting 3–7; values below 3 indicate plasticizer-rich surface layers, while values above 7 are associated with reduced impact energy absorption. Automotive glazing compliance is governed by ECE R43 including the optical and mechanical tests of Annex 3, with UV transmittance characterized by ISO 13837:2021. North American replacement windshields are additionally tested to ANSI Z26.1. Finished windshields are inspected under zebra-plate optical distortion screens and cross-polarized light for interlayer residual stress. The most frequently observed production failure is edge blush originating from insufficient vacuum during pre-lamination; if vacuum falls below −0.06 MPa before loading, edge bubbles form and are generally not recoverable in the autoclave. Published data for tinted or filled variants of this specific configuration is limited; fabricators should request supplier-specific optical data before quoting UV cutoff values.
Architectural laminates incorporating S-LEC Premium UV Blocking Film UA01 are specified when specifiers require reduction of photochemical fading in wood flooring, textile wall coverings, and polymer furniture without relying solely on low-iron glass or applied window films. A standard exterior façade unit is 6 mm heat-strengthened low-iron glass / 1.52 mm UA01 / 6 mm heat-strengthened low-iron glass, often using two plies of 0.76 mm UA01 to satisfy both safety classification and UV-cut objectives. Because the UV absorber is dispersed in the polyvinyl butyral matrix rather than applied as a surface coating, edge trimming and polished exposed edges do not remove the UV-blocking function. Lamination is carried out in a vacuum-bag press or nip-roller line, followed by autoclave at 125–140°C and 1.1–1.3 MPa; the ramp rate is limited to 5°C/min to avoid thermal bow in heat-strengthened panes. The resulting laminate is tested to EN ISO 12543-2 for laminated safety glass and to EN 12600:2002 for pendulum impact classification; luminous and solar transmittance are measured by EN 410:2011. In double-glazed façade assemblies, the UA01 interlayer is placed inboard of the low-emissivity coating to avoid excessive solar absorption on the interlayer surface. Terminal products include point-fixed curtain wall panels, atrium skylights, and vision glazing in spandrel zones. The main process conflict is edge moisture resistance: exterior open-edge laminates require a protective gasket or neutral-cure silicone edge seal because direct weather exposure of the PVB edge accelerates delamination at the glass–interlayer boundary. Additionally, amine-catalyzed sealants must not be placed in direct contact with the exposed interlayer edge; neutral-cure silicone or polyurethane secondary sealants are specified instead. UA01 UV-blocking interlayer is not a substitute for solar-control low-E, and the building’s solar heat gain coefficient must be managed by the low-E coating and insulating glass unit, not by the PVB alone.
| Application assembly | Representative stack-up | Primary standard references |
|---|---|---|
| Automotive windshield | 2.1 mm float / 0.76 mm UA01 / 2.1 mm float | ECE R43, ISO 13837:2021, ANSI Z26.1 |
| Façade curtain wall | 6 mm heat-strengthened / 1.52 mm UA01 / 6 mm heat-strengthened | EN ISO 12543-2, EN 12600, EN 410 |
| Museum display glazing | 2.5 mm low-iron / 0.76 mm UA01 / 2.5 mm low-iron | EN 410, CIE 157:2004 |
| Refrigerated display door | 3.2 mm glass / 0.76 mm UA01 / 3.2 mm glass | ISO 23953-1, ANSI Z97.1 |
| Rail cab windscreen | 5 mm glass / 1.52 mm UA01 / 5 mm glass | EN 15152:2019, UIC 564-2 |
In museum display applications the selection of S-LEC Premium UV Blocking Film UA01 is driven by cumulative exposure limits for light-sensitive objects, not by structural load alone. A common showcase assembly is 2.5 mm low-iron extra-clear glass / 0.76 mm UA01 / 2.5 mm low-iron extra-clear glass, with anti-reflective coatings applied only to the air-side surfaces to avoid coating–interlayer incompatibility. The interlayer is laminated in a cleanroom to limit particle inclusions, which cause visible blemishes under museum lighting. Vacuum-bag de-airing is conducted at 70–80°C for 20–30 min, followed by autoclave at 130°C and 1.2 MPa for 45–60 min. UV transmittance is measured by EN 410:2011, and museum specification commonly requires UV transmittance at or below 1% across the 300–380 nm band. Because visible light in the 400–500 nm range also contributes to photochemical degradation, the laminate does not eliminate fading risk; illuminance at the object plane must be controlled according to CIE 157:2004, often to 50 lux for highly sensitive cellulosic and proteinaceous materials. The finished products include display case lids, archive framing glazing, and glazed storage cabinets. Long-term UV absorber retention is evaluated by xenon-arc exposure per ISO 4892-2, but published data for this specific configuration is limited. Operational boundaries include the requirement to avoid abrasive cleaners containing ammonia on coated surfaces and to replace edge seals if moisture intrusion is observed. UA01 is not in direct contact with artifacts, so the provisions of ISO 18902:2013 for direct-contact framing materials do not apply, but the laminate is assessed as part of the controlled display enclosure.
Refrigerated display door assemblies present a particular edge-seal challenge because the laminate edge is exposed to temperature cycling between approximately −25°C on the cavity side and +25°C on the sales floor side. S-LEC Premium UV Blocking Film UA01 is used in a typical laminate of 3.2 mm glass / 0.76 mm UA01 / 3.2 mm glass, often combined with a low-emissivity coating on the cavity-facing surface to reduce radiative heat gain. Lamination follows standard PVB processing, with autoclave conditions of 120–135°C and 1.0–1.3 MPa for 40–60 min. The laminated glass is then assembled into a multi-pane insulating glass unit with polyurethane secondary seal and desiccant-filled spacer. Compliance for the display cabinet is evaluated under ISO 23953-1:2023 and ISO 23953-2:2023, while safety glazing must meet 16 CFR 1201 or ANSI Z97.1. Terminal products include supermarket reach-in doors, glass lids for open-top merchandisers, and service deli case fronts. The most significant processing boundary is low-temperature impact performance: PVB impact-energy absorption decreases as temperature falls, so full-system impact testing at −20°C or lower is required before specifying UA01 for freezer door applications. Condensation resistance depends on the insulating glass unit design, not on the interlayer alone; edge heaters or warm-edge spacers are specified where door face condensation is unacceptable. Published data for UA01 in commercial refrigeration configurations is limited, and fabricators should validate edge adhesion after 1,000 h of thermal cycling before full production runs.
For rolling stock and marine pilothouse windows, the laminate stack typically places S-LEC Premium UV Blocking Film UA01 behind a chemically strengthened glass face and in front of a spall-resistant polycarbonate layer when impact requirements exceed standard safety-glazing limits. A representative rail cab assembly is 5 mm chemically strengthened glass / 1.52 mm UA01 / 5 mm float glass, with a polycarbonate backing bonded separately where ballistic or spall criteria apply. Lamination is performed on convex or concave tooling using vacuum-bag de-airing at 70–85°C for 30–45 min, then autoclave at 125°C and 1.2 MPa for 60–90 min. Cooling must be slow, below 40°C before demolding, to minimize residual bow and edge stress in curved laminates. Compliance for train cab windscreens is governed by EN 15152:2019 and UIC 564-2; impact classification is assessed by EN 12600. Marine wheelhouse glazing is project-specific and may require classification society approval from DNV or Lloyd’s Register. Terminal products include high-speed train windscreens, tram side windows, and ship pilothouse windows. The primary limitation is that UA01 is used as a bonding and UV-blocking interlayer, not as the primary ballistic energy absorber. If bullet-resistance classes per EN 1063 are required, the polycarbonate backing must be thickness-specified independently, and the UA01 laminate must be tested as a complete system. Edge seal compatibility with marine polyurethane bedding compounds must be confirmed because plasticizer migration can reduce sealant adhesion over time.
Laboratory containment glazing placed between ISO Class 5 clean zones and GMP support corridors uses laminated safety glass to combine impact resistance with UV screening of light-sensitive reagents and cell-culture media. A common assembly is 4 mm tempered low-iron glass / 0.76 mm S-LEC Premium UV Blocking Film UA01 / 4 mm tempered low-iron glass, with the interlayer selected at 0.76 mm rather than 1.52 mm to reduce weight in full-height glazed partitions. Lamination follows cleanroom-compatible procedures using filtered water and non-ionic detergents; silicone contamination on the interlayer edge is prohibited because it creates a low-energy surface that weakens edge adhesion. The autoclave schedule is 130°C at 1.2 MPa for 45–60 min, followed by cooling to below 35°C before edge trimming. Compliance is assessed by EN ISO 12543-2 for laminated safety and EN 12600 1B1 impact classification; cleanroom particle emission is controlled by edge encapsulation in anodized aluminum frames sealed with neutral-cure silicone. Terminal products include glazed pass-throughs, fume hood sashes, and partition walls in pharmaceutical facilities. The main operational boundary is chemical compatibility: aggressive quaternary ammonium disinfectants and strong alkaline cleaning solutions can attack the exposed PVB edge if the edge sealant is damaged; such exposure requires periodic inspection and replacement of the edge seal.
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S-LEC Premium UV Blocking Film UA01 is a plasticized polyvinyl butyral interlayer manufactured for laminated safety glass assemblies in which ultraviolet attenuation is the primary optical requirement. The grade designation UA01 identifies a UV-blocking formulation within the Sekisui S-LEC PVB portfolio. In laminated constructions, the interlayer is placed between two plies of glass and fused under heat and pressure. The resulting composite retains glass fragments after breakage, while the interlayer contributes a defined spectral cut-off in the 300–400 nm region. Unlike surface-applied retrofit films, UA01 is embedded inside the glazing make-up and is not exposed to mechanical abrasion or cleaning agents. Published data for UA01-specific spectral transmittance is limited; comparable UV-blocking PVB interlayers are typically specified to reduce integrated UV transmittance below 1% across 300–380 nm when laminated between two plies of 2.1 mm clear float glass.
The distinction is primarily additive loading and spectral position. A standard clear PVB interlayer already absorbs strongly below 350 nm, but its transmittance rises more rapidly through the UV-A band between 350 nm and 400 nm. UA01 is formulated with a higher concentration of a UV absorber package molecularly dispersed in the plasticized PVB matrix, shifting the cut-off toward the visible boundary while preserving luminous transmittance when measured by ISO 9050:2003 or EN 410:2011. In laminated glazing, this produces a lower ultraviolet transmittance value in the 300–380 nm integration band without requiring a thicker glass substrate. Because the absorber is dispersed through the bulk rather than coated on the glass surface, the UV-blocking function is not subject to the scratching, peeling, or edge delamination that can occur with post-applied films. Haze remains governed by the lamination process; a well-processed UA01 laminate should exhibit haze values consistent with clean-room PVB lamination practice, typically below 1.5% when measured in accordance with ASTM D1003-21.
Roll stock for UA01 is supplied as a plasticized PVB sheet with the UV absorber compounded through the full thickness. The UV-blocking function is therefore retained after cutting, edge trimming, or lamination into curved glass. Common PVB interlayer gauges for this product class are 0.38 mm, 0.76 mm, 1.14 mm, and 1.52 mm; final gauge availability for UA01 should be confirmed against the manufacturer’s current production schedule. Because the absorber is distributed through the bulk rather than applied as a surface coating, edge deletion or cutting does not expose a non-UV-blocking region. This is a practical difference from coated glass or surface-applied retrofit films, where a scratch or edge cut can interrupt the UV barrier.
On production-scale laminating lines, UA01 is handled through the same nip-roll pre-press and autoclave sequence used for conventional PVB interlayers. Pre-press equipment typically includes one or two pairs of heated rubber-covered rolls set to surface temperatures between 100°C and 150°C for de-airing. The pre-pressed stack is then processed in an air autoclave at 120–140°C and 1.0–1.5 MPa for a dwell period of 30–120 min. The exact window is adjusted to glass thickness, interlayer gauge, and glass type. The main processing bottleneck observed with high UV-absorber PVB grades is not viscosity but moisture sensitivity. Interlayer moisture content above 0.5% can generate edge bubbles during autoclave heating; therefore rolls are conditioned in a controlled environment at 18–22°C and 20–40% relative humidity before lay-up. Clean glass surfaces are required because residual dust or edge grinding debris produces visible inclusions at the glass–interlayer interface.
The UA01 interlayer is sensitive to the same process variables that affect standard PVB, but the higher additive content requires closer control of adhesion promoters and residual moisture. PVB interlayers used for architectural and automotive laminated glass contain adhesion-control agents, often magnesium or potassium salts and silane coupling agents in trace quantities. These components determine the glass–interlayer peel adhesion level under ISO 12543-4:2021 ageing conditions. In high-UV-absorber grades, an improperly balanced adhesion package can produce either too-low adhesion, observed as delamination after impact, or too-high adhesion, reducing energy absorption. The lamination room should therefore maintain a dew point that prevents condensation on cold glass; pre-laminated stacks should not be stored in high-humidity staging areas. Edge deletion of the interlayer prior to autoclaving is not normally required for flat architectural glass but is used in some automotive bending processes to control edge flow. With UA01, edge squeeze-out is comparable to conventional PVB, but the plant should verify edge colour stability after autoclave exposure because UV absorber migration to the trimmed edge is negligible under recommended conditions.
Typical installations for UA01 include laminated glass in museum glazing, exhibition cases, archival framing, retail display fronts, and interior partitions where ultraviolet exposure would otherwise accelerate fading of textiles, pigments, or electronic displays. In automotive glazing, the film is suitable for laminated windshields and side glazing where the vehicle manufacturer’s specification requires integrated UV attenuation rather than an applied tint. Because the interlayer is part of the safety-glass structure, it contributes to occupant retention in the event of impact and is tested as part of the laminate according to ISO 12543-4:2021 and national safety glazing regulations. UA01 may also be used in laminated glass for solar shading systems, but the UV absorber does not replace an infrared-reflecting low-emissivity coating; the two functions are independent and may be combined in a triple-silver low-E insulating glass unit. The visual appearance remains close to clear glass when clean, though a faint spectral absorption at the UV edge may be detected by high-sensitivity spectrophotometers. Published data for UA01-specific colour coordinates is limited; therefore full-size production samples should be evaluated under the intended light source before specification.
Thermal cycling and high-humidity exposure are standard durability challenges for PVB laminates. In ISO 12543-4:2021, laminated glass specimens are subjected to high-temperature, humidity, and radiation tests, and the absence of bubbles, delamination, or significant haze is evaluated. For a UV-blocking grade such as UA01, the same failure modes apply. If moisture is not driven from the PVB sheet before autoclave, the laminate may pass initial inspection but later develop edge clouding after repeated service cycles. This edge clouding is often volumetric scattering at moisture–PVB phase boundaries rather than UV absorber degradation. To avoid it, a conditioned storage programme is required at 20–40% relative humidity. In plants where ambient relative humidity exceeds 60%, pre-drying in a recirculating air chamber at 30–35°C for 12–24 h is commonly applied to interlayer stacks before lay-up. Published data for UA01-specific adhesion after thermal cycling is limited; therefore production qualification should compare the UV-blocking grade with the plant’s standard PVB reference using the same glass substrate and autoclave cycle.
Compared with a standard clear PVB interlayer, UA01 is selected when integrated UV transmittance must be reduced without adding a tinted or reflective coating. A standard clear PVB may remain acceptable for visible-light clarity but can allow a higher UV-A component in the 370–400 nm interval; UA01 moves the spectral cut-off closer to 400 nm while maintaining high luminous transmittance. Compared with a surface-applied PET UV film, UA01 does not introduce an additional optical interface that can exhibit adhesive yellowing, edge peeling, or cleaning-agent attack. Compared with a coextruded UV-barrier PVB or an ionoplast interlayer, selection is governed by impact performance, edge-moisture resistance, and glass adhesion requirements. UA01 is specifically a UV-blocking PVB and is not classified as an acoustically enhanced interlayer in available product documentation; projects requiring airborne sound insulation should specify a multilayer acoustic PVB grade or conduct ISO 16940:2008 testing on the proposed laminate. The product is also distinct from rigid polycarbonate or acrylic UV-filter sheets used in some display cases, because those materials are not laminated glass interlayers and have different fire, impact, and abrasion characteristics.
Ultraviolet-blocking performance is not equivalent to colourfastness protection by itself, because fading reactions also proceed under visible and near-infrared radiation. In archival and display glazing, specifiers frequently evaluate the entire laminate using ISO 18901:2010 or the Blue Wool scale under ISO 105-B02. These tests are not product-specific standards but provide comparative lightfastness data. UA01 may reduce the ultraviolet component of the incident spectrum, but the overall display case design must still control temperature, moisture, and visible irradiance. Published data for UA01-specific lightfastness results is limited; therefore a reference sample should be exposed under the intended illumination source alongside the production laminate. This qualification step is necessary because the spectral power distribution of the light source and the humidity history of the display environment affect the observed colour change independently of the interlayer’s UV cut-off.
The relevant verification methods for a UA01-containing laminate are assembled from glass and interlayer standards. Optical performance is evaluated after lamination rather than on the film alone, because the glass type and lamination process influence final spectral transmittance and haze. The table below lists the main standards used in architectural and automotive qualification programmes.
| Standard | Test scope | Application in UA01 qualification |
|---|---|---|
| ISO 9050:2003 | Determination of luminous, solar and ultraviolet transmittance of glazing | Quantify integrated UV transmittance of the completed laminate |
| EN 410:2011 | Determination of luminous and solar characteristics of glazing | Compare visible light transmittance and UV transmittance for building glazing |
| ISO 12543-4:2021 | Laminated glass and laminated safety glass durability | Assess bubble formation, delamination, haze, and edge stability after high-temperature, humidity, and radiation exposure |
| ASTM D1003-21 | Haze and luminous transmittance of transparent plastics | Measure post-lamination haze and luminous transmittance |
| ISO 527-3:2018 | Tensile properties of films and sheeting | Verify interlayer tensile properties before lamination, if required by production QC |
| ISO 16940:2008 | Measurement of sound insulation of laminated glass | Conduct only when acoustic performance is specified; not a UV-blocking acceptance test |
In architectural and automotive production environments, UA01 must be stored away from direct sunlight and high ambient temperatures. Roll packaging is designed to prevent moisture uptake, but once the polyethylene wrapping is opened, the interlayer should be processed within the supplier’s recommended open-time. Strong alkaline or acidic glass-cleaning solutions should not contact the raw interlayer before lamination, because the plasticized PVB surface can be attacked and develop local haze or adhesion changes. Cleaning agents that leave silicate residues are also unsuitable. For laminated glass intended for outdoor use, the cut edge must be protected from standing water. Although PVB edges are sealed by the glass, prolonged water exposure at exposed cut edges can promote local delamination in any PVB interlayer, including UV-blocking grades. When UA01 is used in combination with low-emissivity or solar-control coatings, the coating is deposited on the glass surface and is unaffected by the PVB’s UV absorber; however, the emitter-side placement must follow the glass manufacturer’s instructions to avoid thermal stress breakage.
