| HS Code | 937051 |
| Product | S-LEC Colour Film |
| Basematerial | Polyvinyl butyral (PVB) |
| Coloravailability | Wide range of transparent and translucent colors |
| Thicknessoptions | Typically 0.38 mm and 0.76 mm |
| Lighttransmittance | Varies by color and thickness |
| Haze | Low haze for high optical clarity |
| Uvcutoffwavelength | Filters over 99% of UV radiation below 380 nm |
| Adhesiontoglass | Excellent adhesion after autoclaving |
| Tensilestrength | High tensile strength for structural interlayer use |
| Elongationatbreak | High elongation for impact resistance |
| Weatherresistance | Resistant to yellowing and degradation from sunlight |
As an accredited S-LEC Colour Film factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | S-LEC Colour Film is supplied in moisture-proof packaging as rolls, with each carton containing a specified quantity of film for interlayer use. |
| Container Loading (20′ FCL) | Loading 20′ FCL with S-LEC Colour Film involves palletized rolls, secured with dunnage, moisture-protected, and evenly distributed for safe transport. |
| Shipping | S-LEC Colour Film is shipped as a non-hazardous, rolled interlayer film. It is packed on moisture-barrier cores with protective wrapping to prevent scratches and humidity damage. Transport in clean, dry, covered containers, avoiding direct sunlight and extreme temperatures. Handle with care to preserve film flatness and optical clarity. |
| Storage | Store S-LEC Colour Film in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and ignition. Keep in original sealed packaging to prevent moisture absorption. Store rolls horizontally on a flat surface to avoid deformation. Maintain recommended temperatures and use within shelf life for optimal performance. |
| Shelf Life | Store in a cool, dry place away from moisture and sunlight; use within one year of manufacture to maintain clarity and adhesion. |
Where high-rise spandrel glazing requires uniform reflected colour without field-applied ceramic frit or wet coatings, S-LEC Colour Film is introduced as a finished polyvinyl butyral interlayer between heat-treated glass lites. The laminate is governed by EN ISO 12543-2:2021 for laminated safety glass and EN 12600:2002 for impact test classification; project specifications may additionally require compliance with CPSC 16 CFR 1201 Category II and AS/NZS 2208 for safety glazing in facades. In a typical unitized curtain wall spandrel, the interlayer addition is specified at 0.76 mm, consisting of two 0.38 mm plies, applied at a lay-up rate of 813 g/m² between a 6 mm tinted outer glass and a 6 mm coated substrate; when full opacity or higher edge stability is specified, the interlayer is increased to 1.52 mm by stacking four plies, which corresponds to 1.63 kg/m² of PVB resin. On-site dilution with plasticizer or solvent is not specified and would invalidate the laminate certification. The downstream process begins with cutting and edge-working of flat glass before heat strengthening or tempering, followed by deionized-water washing, cleanroom lay-up at 18–23 °C and 20–30 % RH, nip-roller de-airing, and autoclave lamination at 12–14 bar and 135–140 °C for 90–120 min. Failure modes observed on production lines include white edge haze when PVB moisture content exceeds 0.4 % by Karl Fischer titration prior to autoclave, and edge pull-in when the interlayer is exposed to ambient air above 30 % RH for more than 20 min during lay-up. The finished spandrel panel is delivered as a cut-to-size laminate; subsequent cutting, edge polishing, or drilling is not permitted because the PVB interlayer cannot be re-sealed after autoclave. Edge sealant contact must be limited to neutral-cure silicone systems tested for adhesion to PVB; acetic acid-cure silicone and solvent-borne sealants can cause edge softening. End product types include shadow box spandrel panels, back-painted glass replacements, and unitized curtain wall vision zone collars.
The residual load-bearing requirement after glass fracture forces a thicker interlayer stack than vertical glazing. Overhead canopies, skylight fall-through barriers, and glass floor panels fabricated with S-LEC Colour Film use a 1.52 mm four-ply interlayer at 1.63 kg/m² between 8 mm heat-strengthened top and 8 mm heat-strengthened bottom lites. Compliance follows EN ISO 12543-2:2021 in combination with EN 12600:2002 Class 1B1 or 2B2, ASTM C1172-19 for architectural laminated glass, and CPSC 16 CFR 1201 Category I where fall protection is required; the heat-treated glass is additionally heat-soaked according to EN 14179:2016 before lamination to reduce nickel sulfide breakage risk. The process conflict is sequencing: heat-soak testing must be completed on the individual glass lites prior to interlayer assembly because a post-lamination heat-soak failure cannot be replaced without destroying the laminate. The lamination itself runs at 12–14 bar in an autoclave with a soak plateau of 135–140 °C for 120 min, and the pressure ramp is limited to avoid edge air entrapment in the thicker four-ply stack; de-airing is executed either on a nip-roller line with roll gap settings adjusted for the thicker interlayer or in a vacuum bag at 0.7–0.9 bar for curved panels. After autoclave, the laminate is cooled to below 40 °C while still under pressure before removal from the basket to prevent surface marking. The finished overhead panel types include structural glass canopies, frameless skylight infill, glass floor panels with anti-slip frit on the top glass, and balustrade segments where the coloured interlayer is retained after fracture. Edge condition is a stated limitation: the exposed PVB edge must be sealed or covered by a structural frame because cyclic humidity above 30 % RH reduces edge adhesion and creates a white migration zone.
In laminated side glazing and panoramic roof laminates where ECE R43 optical quality is non-negotiable, S-LEC Colour Film is processed as a 0.76 mm interlayer comprising two 0.38 mm plies at 813 g/m² between 2.1 mm and 2.6 mm bent glass. Regulatory acceptance for automotive applications is linked to ECE R43 Rev.5 for glazing in vehicles, ANSI/SAE Z26.1 for North American markets, GB 9656 for China, and JIS R3211 for Japan; windshield primary vision zones still require luminous transmittance above 70 %, so coloured interlayers are restricted to side, roof, and shade-band positions rather than the central driver vision area. The downstream process uses a cleanroom lay-up at 18–23 °C and no more than 28 % RH because curved automotive glass has higher springback than flat architectural glass; the PVB is preformed on a heated vacuum table, assembled with the glass, and de-aired in a peripheral vacuum ring at 0.7–0.9 bar before autoclave at 13–14 bar and 135–140 °C for 60–120 min depending on glass thickness and curvature. The critical failure mode on production lines is optical distortion caused by dust particles larger than 50 µm trapped between the PVB and the glass, visible as lens-shaped defects after autoclave; another observed bottleneck is interlayer wrinkling at the sharp radius of panoramic roof panels when the vacuum preform cycle is shortened below 8 min. End product categories include laminated side privacy glazing, quarter lights, panoramic roof panels, and laminated rear screen assemblies where colour is used for solar control and privacy.
Interior glazing fabricated with coloured PVB is selected primarily for impact safety and design continuity, not for fire separation. The governing mechanical standards for partition glass are EN 12600:2002 and ANSI Z97.1-2015 (R2020); CPSC 16 CFR 1201 Category I may be invoked when the partition is installed as a door or side lite. The interlayer addition for frameless partitions is typically 0.76 mm two-ply at 813 g/m² between 5 mm and 6 mm heat-strengthened low-iron glass; where acoustic tightening or heavier door hardware is involved, a 1.14 mm three-ply stack at 1.22 kg/m² is used. The production flow includes cutting, edge-working, fitting, and drilling of any hardware holes before lamination; CNC waterjet cutting is preferred for cut-outs because hole edges must be free of shelling. Cleanroom lay-up at 18–23 °C and 20–30 % RH, nip-roller de-airing, and autoclave lamination at 12–14 bar and 135–140 °C for 90 min are standard. The relevant constraint is smoke and toxic emission: coloured PVB is a plasticized organic interlayer and does not provide an EN 13501-1 fire classification by itself; when fire-rated partitions are required, the coloured PVB laminate must be combined with a fire-rated glass substrate or the specification must be changed to a fire-tested system. End products include frameless office partitions, sliding door leaves, elevator shaft infill panels, and stair rail infill where the laminate is required to remain in the frame after impact.
| Installation context | Governing standards | S-LEC Colour Film addition | End-product type |
|---|---|---|---|
| Curtain wall spandrel | EN ISO 12543-2:2021; EN 12600:2002; CPSC 16 CFR 1201 Cat. II | 0.76 mm two-ply / 813 g/m² | Shadow box and unitized spandrel panel |
| Overhead canopy | EN ISO 12543-2:2021; EN 12600:2002 Class 1B1; ASTM C1172-19 | 1.52 mm four-ply / 1.63 kg/m² | Canopy, skylight, fall-protection glass floor |
| Automotive side glazing | ECE R43 Rev.5; ANSI/SAE Z26.1; GB 9656 | 0.76 mm two-ply / 813 g/m² | Privacy side glass, panoramic roof, quarter light |
| Interior partition | EN 12600:2002; ANSI Z97.1-2015 (R2020) | 0.76 mm or 1.14 mm | Frameless partition, sliding door, stair rail infill |
| Marine window | ISO 614:2016; ISO 21005:2012 | 1.52 mm four-ply / 1.63 kg/m² | Weathertight window, porthole, bridge side window |
| Interlayer stack | Area mass | Autoclave plateau | Soak time | Maximum lay-up RH | Storage temperature |
|---|---|---|---|---|---|
| 0.38 mm single ply | 407 g/m² | 135 °C | 60 min | 30 % RH | 18–23 °C |
| 0.76 mm two-ply | 813 g/m² | 135–140 °C | 90 min | 30 % RH | 18–23 °C |
| 1.14 mm three-ply | 1.22 kg/m² | 135–140 °C | 105 min | 30 % RH | 18–23 °C |
| 1.52 mm four-ply | 1.63 kg/m² | 135–140 °C | 120 min | 30 % RH | 18–23 °C |
A marine laminate manufactured from heat-soaked tempered glass and S-LEC Colour Film is exposed to continuous salt spray, high UV irradiance, and cyclic hull deformation. The applicable standards include ISO 614:2016 for tempered safety glass panes for rectangular windows and side scuttles, ISO 21005:2012 for window frames, and relevant IMO FTP Code sections when the glazing is part of a fire-rated division. The interlayer stack is specified at 1.52 mm four-ply, corresponding to 1.63 kg/m², between 6 mm and 10 mm fully tempered glass lites; thinner 0.76 mm stacks are generally not accepted for weathertight or load-bearing marine windows because edge creep and moisture ingression are higher relative to the glass area. Production runs require heat-soaking of the tempered glass to EN 14179:2016 or an equivalent classification society procedure, followed by lamination in a closed cleanroom because PVB moisture content must remain below 0.4 % before autoclave. De-airing is performed with vacuum bags for large curved bridge windows, and the autoclave cycle is held at 12–14 bar and 135–140 °C for 120 min, with a slow cool phase to avoid wave distortion in thicker glass. The exposed edges of the finished laminate are sealed with a marine-grade polysulfide or polyurethane sealant that has documented adhesion to PVB; failure to seal edges results in chloride-induced edge whitening and progressive loss of interlayer bond within six to twelve months in warm climates. Published data for S-LEC Colour Film under continuous salt immersion with sealant cut-back is limited; therefore, field validation with the selected sealant is advised before production release. End products include yacht cabin windows, porthole glass, weathertight door vision lights, and bridge side windows.
Display case lamination for UV-sensitive artefacts uses the ultraviolet absorption edge of polyvinyl butyral rather than applied film coatings. S-LEC Colour Film in a 0.76 mm two-ply format at 813 g/m² is laminated between 4 mm and 5 mm low-iron glass for display vitrines; non-load-bearing shelving uses a 0.38 mm single ply at 407 g/m². The applicable standards are EN ISO 12543-2:2021 for the laminate and EN 12600:2002 for impact behaviour; museum specifications may additionally reference conservation-specific materials test standards when the glass is in direct proximity to collection objects. The lamination process prioritises optical flatness and bubble-free bond: the glass is cut and edge-seamed before washing with deionized water, assembled with the interlayer in an ISO 14644-1 Class 8 cleanroom, de-aired on a nip roller, and autoclaved at 12–14 bar and 135–140 °C for 90 min; PVB thickness tolerance must be tightly controlled because local thickness variation above ±0.05 mm creates visible power in the finished vitrine. The known archival limitation is plasticizer migration from exposed PVB edges, which can deposit a thin film on adjacent low-porosity surfaces over years; direct contact with cellulosic storage materials should be avoided, and edges should be encapsulated in a metal or tested polymer frame. End products include museum vitrines, picture glazing, retail showcase fronts, and art transport crates with coloured interlayers used to manage solar gain and UV exposure.
Contract furniture fabricated from coloured PVB laminates removes the need for post-tempering screen printing while retaining fracture retention in table tops and shelves. The relevant standards are EN 12600:2002 and ANSI Z97.1-2015 (R2020) for safety glazing; the glass substrate is heat-strengthened or tempered to EN 12150:2015 or ASTM C1048-18. The addition ratio for non-structural shelf inserts is a 0.38 mm single ply at 407 g/m² between two 4 mm heat-strengthened lites, while table tops and cantilevered desk surfaces use 0.76 mm two-ply at 813 g/m². All hardware holes, cable cut-outs, and edge ramps are cut and polished before lamination because drilling after autoclave will destroy the interlayer plane. The process follows the same cleanroom lay-up, nip-roller de-airing, and autoclave schedule at 12–14 bar and 135–140 °C for 90 min. Exposed edges in furniture applications are the main operational boundary: if the PVB edge is left unpolished and unsealed, ambient moisture above 30 % RH in non-conditioned interiors causes edge whitening within weeks. End products include coloured table tops, cabinet door glass, room divider panels, and floating shelf inserts.
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S-LEC Colour Film is a plasticized polyvinyl butyral (PVB) interlayer containing selected organic and inorganic colourants; it is used in laminated safety glass for automotive glazing, architectural facade systems, interior partitions, and decorative applications. The product is supplied in roll form and is normally identified by proprietary colour reference codes rather than separate structural model numbers. Standard caliper availability is from 0.38 mm to 1.52 mm, with multiple plies used for thicker stack-ups. The interlayer is designed to satisfy the component requirements of ISO 12543-1:2021 and ISO 12543-2:2021 when laminated with suitable glass. The main difference from clear PVB is the intentional spectral modification produced by the pigment or dye package: luminous transmittance, solar transmittance, and reflected colour coordinates are altered while the film remains buried between glass plies. Unlike ceramic frit, the colourant layer is not exposed to surface abrasion, cleaning chemicals, or direct atmospheric erosion. In comparison with tinted float glass, S-LEC Colour Film permits the use of ordinary clear float glass and moves the colour function to the interlayer; this can reduce minimum-order issues for custom colours but requires lamination-stage quality control for colour stability. These characteristics are evaluated using methods from ISO 9050 for luminous and solar properties and ISO 14782 for haze. Published data for each proprietary colour is typically supplied in the manufacturer's batch documents; generic published values for opaque decorative grades may be limited.
Because PVB is hygroscopic, roll handling and storage are controlled. Incoming rolls are usually kept in sealed moisture-barrier packaging at 10–20°C and 30–40% RH. Exposure to relative humidity above 60% can increase moisture uptake; at moisture levels above approximately 0.4 wt%, edge bubbles and haze are documented lamination defects. Before unwinding, rolls should be conditioned at cleanroom temperature of 18–25°C for a period determined by roll width and core temperature, normally 24 h for full-width architectural rolls. The film is not recommended for use with glass washed in acidic or amine-containing cleaning solutions unless the glass surface is dried and stabilised, because interfacial pH deviations can alter PVB adhesion. These operational limits are common to PVB interlayers and are not unique to coloured grades, although dark colour grades can make moisture-related defects more visible in transmitted light.
The primary limitation for colour consistency is dispersion uniformity. Production-scale sheet extrusion of pigmented PVB is normally carried out on single-screw extruders with barrier screws, static mixers, and slot dies; melt temperatures are maintained typically between 180°C and 210°C to prevent excessive plasticizer volatilization while allowing adequate melt flow. Screens of 30–40 µm are inserted before the die to remove pigment agglomerates, but high colourant loadings can cause screen-pack pressure increase and die-lip deposits. Transparent colour films are more sensitive to streak formation than opaque or high-hiding formulations because local pigment concentration differences are visible as chromatic variation. On manufacturing lines, process capability is assessed by in-line spectrophotometry with D65 illumination and 10° observer geometry; the measured CIELAB coordinates are compared with an approved master standard, and ΔE*ab values above 1.0 typically trigger lot review. However, lamination itself can alter colour by 1–3% absolute in luminous transmittance because of plasticizer redistribution and glass interface wetting; this is not a manufacturing defect but must be accounted for during colour approval.
Glass adhesion is governed by moisture, surface cleanliness, and the PVB adhesion additive package. A pummel adhesion value of 3–7 evaluated according to ISO 12543-4 is generally targeted, but target values may be product-specific. In production lamination, improper de-airing, glass washing contamination, and autoclave underpressure are more frequent causes of poor edge sealing than the colourant package itself. An observed failure mode in sheet extrusion is burn streaking in yellow and red grades, which is suppressed by reducing melt temperature or increasing screw cooling in the metering zone. For dark grades, edge inspection after lamination at 500–1,000 lx is recommended because subtle colour variations are less visible under high light levels. Moisture content above 0.45 wt% has been observed on production lines to increase edge bubble defect rates even when autoclave cycle time is extended.
For colour-specific confirmation, the following table lists representative property ranges for plasticized PVB colour interlayers compared with clear PVB. The ranges are not batch specification limits; they represent common values for laboratory measurements on free film. Opaque and reflective colours may deviate outside the transparent-colour envelope, and the certificate of analysis should be used for release decisions.
| Property | Test method | S-LEC Colour Film | Clear PVB reference |
|---|---|---|---|
| Density | ISO 1183-1:2019 | 1.06–1.10 g/cm³ | 1.06–1.10 g/cm³ |
| Tensile strength | ISO 527-3 | 20–30 MPa | 22–30 MPa |
| Elongation at break | ISO 527-3 | 180–300% | 200–350% |
| Haze | ISO 14782 | <2% for transparent colours; opaque grades not applicable | <1.5% |
| Luminous transmittance | ISO 9050 | 5–85% depending on colour | >88% in 2 mm + 2 mm glass layup |
| Solar direct transmittance | EN 410 | 10–70% depending on colour | 60–80% depending on glass |
| Pummel adhesion to glass | ISO 12543-4 | 3–7 | 3–7 |
Thickness tolerance of the film is controlled in accordance with the manufacturer's written specification referenced to ISO 12543-2:2021. The 0.76 mm grade is frequently selected for automotive and architectural safety glazing, while 1.52 mm is often used in overhead, floor, detention, or hurricane-resistant assemblies. For visual quality, transparent colour grades are measured for haze according to ISO 14782, and opaque colour grades are measured for hiding power and surface uniformity. A grey scale or spectrophotometric method is applied for colour fastness; published accelerated weathering data for the coloured interlayer itself are often limited when tested as free film because the laminate configuration, glass UV cutoff, and edge sealing alter aging behaviour. Any statement of long-term colour stability should therefore be based on a laminated glass test, not on free-film exposure.
Chemical compatibility constraints are similar to clear PVB, with additional colour-specific checks. Contact with ketones, chlorinated solvents, and selected alcohols can induce local plasticizer extraction and discoloration. Amine-containing silanes or glass cleaners can shift interfacial pH and reduce pummel adhesion below the 3–7 target. S-LEC Colour Film is supplied with regulatory documentation confirming compliance with REACH and RoHS for heavy-metal restrictions; however, exact pigment chemistry is proprietary. Adhesion control additives are usually incorporated, and changing the glass supplier or tempering process can alter the glass surface's tin or sulfate concentration enough to shift pummel values. For heat-strengthened or tempered glass with high-absorption colour grades, EN 14179 heat-soak testing may be required because the interlayer can increase absorbed solar energy and thermal stress.
On typical architectural or automotive glass lines, lamination of S-LEC Colour Film follows standard PVB practice. Vacuum-bag lines reach 60–90°C during de-airing; roller lines may operate at similar surface temperatures before autoclave. A common autoclave profile is 130–150°C at 1.0–1.5 MPa for 30–60 min for thin layups. High-hiding colour grades with dense pigment loads may initially show lower room-temperature tack to unheated glass; this is compensated by increasing the preheating time or adding a brief vacuum soak, not by increasing roller pressure beyond the equipment limit. Percent vacuum should exceed 95% during de-airing. The laminating room is typically maintained at 18–25°C and below 35% RH. Edge trimming is performed after autoclave with tungsten-carbide or stainless blades; the cut must not drag or smear the coloured interlayer. For thin glass configurations, thermal stress in dark colour grades should be evaluated using solar absorption data derived from EN 410. Published data for specific colour formulations at extreme stock sizes or thicknesses may be limited; a trial lamination is standard practice.
At the facade system level, the choice of S-LEC Colour Film in place of ceramic frit or body-tinted float glass is usually decided by fabrication constraints and long-term appearance. A PVB interlayer retains the visual colour behind the glass and is protected from handling damage; ceramic frit can be scratched during cutting, tempering, or installation, and its surface roughness may retain soil. Because frit is printed on the glass before tempering, replacement of frit with an interlayer can simplify supply chains for uniform colour work, but S-LEC Colour Film is a continuous interlayer and does not produce patterned graphics. Compared with body-tinted float glass, S-LEC Colour Film allows ordinary clear annealed or heat-treated glass to be used as the substrate; colour is added during lamination, and the same colour reference may be applied across different glass thicknesses. However, solar absorption occurs within the interlayer and can raise the temperature of the laminate. For dark or high-absorption colours, a thermal stress evaluation is recommended using spectral data obtained according to EN 410 or ISO 9050. Edge zones of the laminate may experience higher stresses than the centre because of glass edge finish and sealant contact; this is a known limitation for PVB-based colour laminates in structural silicone glazing. In humid or open-edge applications, clear PVB and colour PVB are subject to edge cloudiness unless edge sealing is specified; ionomer interlayers are preferred where exposed edges are required. Compared with acoustic PVB, the colour film may not provide improved sound insulation unless the specific colour grade is manufactured from an acoustic PVB base. The standard test method for impact classification is EN 12600, and component durability is covered by ISO 12543-4.
Automotive roof and side-lite specifications use S-LEC Colour Film where solar attenuation and privacy are required without altering the outer glass surface. The film is not suitable by itself for head-up-display windshields requiring a wedge-shaped interlayer; specific wedge and optical criteria must be selected separately. Transmission measurements for automotive applications are carried out according to UN ECE R43, ANSI/SAE Z26.1, or national equivalents, using the actual glass configuration. A colour film that appears uniform in free film can show small visible shifts after lamination because of reflection at the glass interfaces and plasticizer redistribution; a reference laminate is therefore necessary for incoming quality control. Glass side-lite colour constraints vary by market, and luminance transmittance in the visible range may need to remain above 70% for some glazing positions. Dark colour grades can exhibit near-infrared transmission that is not evident from luminous data; solar direct transmittance should be measured because a dark blue visible appearance can still have higher infrared throughput than a similar grey or green. Published spectral data for specific colours in curved roof panels may be limited; the glass laminator should request a batch-specific spectral curve for the final layup.
Operational boundaries include storage in sealed packaging at 10–20°C, layup area dew point below 10°C, and avoidance of amine-containing glass cleaners in direct contact with exposed interlayer edges. S-LEC Colour Film should not be used where edges are exposed to liquid water or high-pH cleaning solutions without sealant protection, because PVB's moisture sensitivity may cause edge whitening over time. The product is not a structural ionomer substitute for open-edge or high-modulus applications; the choice of interlayer must consider post-breakage strength, edge stability, and expected service temperature. In high-altitude or high-UV environments, colour stability of a given pigment package should be confirmed by accelerated weathering on the intended laminate, because free-film aging overestimates colour shift when the glass filters UV radiation. For demanding facade specifications, the supplier's batch certificate of analysis and the glass laminator's process data are the accepted authority for release decisions. Generic property values in this document are representative of plasticized PVB interlayers; they do not supersede the actual product data sheet for the selected colour reference.
