Bada AG BADAFLEX® SEBS-Comp. TPE-S 60D 1878 FR schwarz S3 is a black SEBS-based thermoplastic elastomer compound with 60 Shore D hardness and a flame-retardant package intended for injection molding and extrusion. The scenarios below are limited to industrial sectors where this hardness class, flame-retardant behaviour and black colour are specified in final articles, not as a universal substitute for other TPE hardness grades. All standard designations refer to article-level testing unless explicitly identified as material-level; final conformity remains the responsibility of the article manufacturer. Product-specific processing data must be drawn from the Bada AG technical datasheet and lot certificates; statements in the application scenarios are based on published engineering practice for comparable 60D FR TPE-S compounds where product-specific data are limited. Melt flow rate measurements for this hardness class are typically performed according to ISO 1133-1:2022 at 230°C/5 kg, with expected values between 1 g/10 min and 10 g/10 min; the lot certificate discloses the exact value.

In flexible industrial cable jacketing, a semi-rigid 60 Shore D SEBS-based TPE-S compound is used where PVC-free sheathing must pass a single-cable vertical flame propagation test while retaining damage-resistant handling. The BADAFLEX® grade is introduced into the sheath layer at 100 wt% as supplied; clean post-industrial edge trim from the same production lot may be introduced at a maximum 15 wt% of total feed. That limit is set because regrind above 15 wt% in production-scale extrusion on a 45 mm single-screw extruder processing comparable 60D FR TPE-S compounds increased Shore D by 2 points and raised melt pressure by 8%, behaviour attributed to selective fines retention at the screen pack. For final cable constructions specified under IEC 60332-1-2:2004+A1:2015, flame propagation is assessed on the completed cable, not on the compound alone; for halogen-free constructions, halogen gas emission is tested according to IEC 60754-1:2011, and EU market shipments require verification against RoHS 2011/65/EU Annex II and the REACH candidate list at article level. Processing on production-scale cable lines typically uses a 25:1 L/D single-screw extruder with a barrier screw at compression ratio 2.5:1, a static mixer in the melt stream, and a gear pump between screw and die; barrel zones are profiled from 170°C to 205°C, die head is kept at 200°C, and the melt passes through a 60/80/100 mesh screen pack before entering pressure tooling. Extrudate is quenched in a water trough at 20–35°C, air-stripped, and printed in line. Under those conditions, online diameter variation is maintained within ±0.05 mm at line speeds of 30–80 m/min, though optimum speed depends on conductor bundle preheat and pressure tooling geometry. Terminal products include servo motor power cable sheathing, drag-chain-compatible automation cables, and hybrid power/data cable jackets for machine tools. The operational boundary is long-term contact with cutting oil: uncrosslinked SEBS compounds may swell in mineral oil and lose tensile stress at the sheath inner wall, so exposure should be tested to ISO 1817:2015; compound-specific oil exposure data for this grade are limited, and cable-level validation is required when oil mist is present above 60°C.

Does 60D TPE-S FR retain UL 94 V-0 after exposure to road salt aerosol in EVSE connector bodies?

EV charging infrastructure uses flame-retardant 60D TPE-S compounds for non-current-carrying connector body components, charging inlet shrouds, cable strain-relief clamps and protective caps because the material combines thin-wall flame retardancy with low-temperature impact. In injection molding of AC charging connector outer covers, the compound is processed neat at 100 wt%; clean runner regrind from the same colour lot is restricted to 10 wt% where UL 94 V-0 at 1.5 mm must be preserved. The restriction is based on spiral flow measurements in a 2 mm spiral mold on a 120-tonne hydraulic injection machine processing comparable 60D FR TPE-S compounds, where 20 wt% regrind reduced flow length by 12% and shifted recorded afterflame time in vertical burn testing from 3 s to 8 s; product-specific data for this grade are limited, so lot-specific verification remains mandatory. For article-level conformity, connector housings are evaluated according to IEC 62196-1:2022 for vehicle connectors and socket outlets, with North American configurations additionally assessed under UL 2251; flammability classification uses IEC 60695-11-10:2013, and comparative tracking index should be measured per IEC 60112:2020 because the surface may face conductive dust. The injection molding process window uses a barrel profile from 175°C to 210°C, melt temperature 200–215°C, mold temperature 25–40°C, injection velocity 30–60 mm/s, and holding pressure 50–70 MPa; clamp force is calculated from projected area using cavity pressure 30–40 MPa. On a production-scale 80-tonne all-electric injection molding machine, shot-to-shot mass variation was controlled below 0.12% when the screw cushion remained between 4–6 mm and back pressure was set at 5–8 MPa; deviations outside this cushion window led to intermittent sink marks around the latch boss. Demoulded parts are not annealed, but moisture conditioning is avoided. The material should not be used as primary current-carrying insulation unless the complete cable and connector system passes the dielectric withstand and tracking tests specified in the relevant connector standard; continuous outdoor exposure to de-icing salt aerosol requires supplemental weathering validation because published data for combined salt mist and UV ageing on this specific grade are limited.

Switchgear Gland Sealing and Strain-Relief Geometries

Switchgear and conduit fitting applications use a 60D flame-retardant SEBS compound where the component must be rigid enough to hold fine-pitch threads but elastic enough to seat against varying cable outer diameters without cracking. Qualification for unattended appliance and switchgear insulation parts typically references IEC 60695-2-11:2014 glow-wire ignition at 850°C, with final acceptance depending on wall thickness and adjacent metallic mass; enclosure IP rating is tested to IEC 60529:1989+A2:2013. The material is injection-moulded as supplied at 100 wt%; clean cold-runner regrind may be added up to 20 wt% for non-safety-critical surfaces if acceptance testing confirms tensile strength retention of at least 90% of virgin value. In a 60-tonne toggle-clamp injection machine with a 28 mm screw, liquid silicone or external mold release is avoided because release agent turns black parts grey and can interfere with laser marking; demoulding uses ejected draft angles of 1.5–2.0°. Melt residence time is held below 5 minutes, and barrel temperatures are kept between 180°C and 205°C; flame-retardant degradation is observed as an increase in melt pressure fluctuation above ±1.5 MPa. The mold temperature is set to 15–25°C with turbulent water flow through 8 mm cooling channels, producing cycle times of 25–40 s for parts with 2.0 mm nominal wall. Terminal product types in this sector include M20 and M25 cable glands, IP66 rated conduit fittings, strain-relief bushings, bushing covers and DIN-rail terminal housing inserts. Operational boundaries in switchgear use require that continuous exposure to condensation at temperatures above 80°C can cause surface exudation of low-molecular-weight flame-retardant additives; comparative tracking index per IEC 60112:2020 must be confirmed because carbon-black pigmentation reduces surface resistance, and parts intended for connections above 600 V need article-level clearance and creepage verification.

Power tool guards and rear housing skins molded from 60D flame-retardant TPE-S are produced in two-component machines where the substrate is glass-fibre reinforced PA66 or PA6. The TPE-S compound enters the second barrel at 100 wt% without dilution; attempts to blend TPE-S with PA66 regrind in the same barrel have caused phase separation and surface delamination on an 80-tonne rotary-table two-shot machine. The processing window for the TPE-S layer is 200–220°C melt temperature and 30–50°C mold temperature, with substrate preheating at 80°C to reduce differential shrinkage. Mechanical adhesion to polyamide is low without mechanical interlocks; part designs must include holes, grooves or edge wraps of at least 1.0 mm depth. Qualification of power tool parts under EN 62841-1:2015+AC:2015 may require flammability classification to UL 94 V-0 at the smallest wall thickness in the part; in practice, thin flame barriers at 1.5 mm are tested according to IEC 60695-11-10:2013. Because power tools are dropped from 1 m onto concrete in standard handling tests, the SEBS compound absorbs impact energy at low temperature; finished parts should be conditioned to -20°C before impact. Production-scale failure modes in this sector include gas entrapment behind the TPE-S front due to insufficient venting, causing burn marks when cavity air is compressed to 0.5 MPa or more. Terminal products include angle grinder guard edge profiles, rear housing skins for battery-operated drills, trigger enclosure covers, and anti-shock collar protectors. The material should not be specified where direct contact with ketones or esters is expected; these solvents swell the SEBS amorphous phase and can produce environmental stress cracking in the harder 60D grade. Published data for repeated drop performance of this specific compound on PA66 substrates are limited; designing for mechanical interlock and testing to the final tool geometry is mandatory.

When EN 45545-2 HL2 limits are applied to rail interior edge protection profiles

Rail interior components manufactured from flame-retardant SEBS compounds are specified where smoke opacity and toxic gas emission are constrained at vehicle level. The 60D grade is extrusion-compounded into rigid base profiles for cable raceways and edge protection; co-extrusion with a 40–50 Shore A sealing lip SEBS is common, with layer thickness ratios between 1:2 and 2:1 depending on compression set and closure force. The compound is fed at 100 wt% as supplied into the main extruder; regrind from start-up purge is restricted to 10 wt% for interior components because colour consistency and flame-retardant distribution become more variable at higher regrind due to particle segregation in the hopper. For European rolling stock, the relevant standard is EN 45545-2:2020; component-level requirements depend on the specific R-set derived from vehicle location and fire hazard category, and material supplier data alone do not satisfy HL2 article-level conformity. Processing on a profile line uses a 30:1 L/D twin-screw extruder or a single-screw extruder with melt pump, melt temperature 185–200°C, die land length 15–20 times the wall section, and vacuum calibration at -0.5 to -0.8 bar; line speed is set from 3 to 8 m/min for profiles with wall thickness 2.0–3.5 mm. Production experience shows that melt fracture develops on the rigid 60D layer when die land temperature exceeds 205°C, producing visible ridges that cannot be removed by downstream embossing; maintaining the calibrator vacuum below -0.6 bar is required to hold corner geometry. Finished goods in this sector include under-seat cable raceway profiles, HVAC duct coupling sleeves, entrance threshold edge protection, and interior door-edge guards. The limitation is that smoke density per ISO 5659-2:2017 is a finished-article measurement that depends on total combustible mass and surface area; using this TPE-S compound in a large-profile cross-section may alter the article-level result even if the material passes component screening.

Thin-wall consumer electronics enclosures and internal brackets made from flame-retardant 60D TPE-S are processed on high-speed injection molding machines with gas-assisted packing where required. The compound is fed at 100 wt% virgin material for first article and for surfaces requiring consistent black colour; regrind is capped at 5 wt% for high-gloss enclosure shells because 10 wt% regrind has produced visible splay and gloss reduction of 6–8 gloss units on a 60° surface under production lighting. Relevant safety standards include IEC 62368-1:2018 for audio/video and information technology equipment, with fire enclosure requirements referenced to UL 94 V-0 at the minimum thickness used in production, typically 1.2–1.8 mm. Processing uses hot-runner molds with valve gate diameters of 0.8–1.2 mm, barrel temperatures 180–210°C, mold temperature 25–35°C, injection velocity 80–120 mm/s, and vent depths of 0.02–0.04 mm; inadequate venting causes gas burn at the end of fill when air is compressed above 0.7 MPa. The material should be dried at 80°C for 2 hours if pellet containers have been open for more than 1 hour at relative humidity above 60%, because moisture absorption in flame-retardant SEBS compounds can generate surface streaks and reduce tensile stress at break. Terminal products include AC power adapter clamshell housings, internal brackets for rack-mount power supply modules, firewall appliance housing inserts, and LED driver enclosures. The operational boundary is compatibility with polycarbonate: SEBS-based compounds can migrate low-molecular-weight process oil into polycarbonate substrates and reduce stress-crack resistance, so polycarbonate overmolding or snap-fit contact requires testing under ISO 22088-3:2008 or an equivalent article-level stress-cracking protocol.