The compound identified as Bada AG BADAFLEX® SEBS-Comp. TPE-S 60D 1160 is classified as a styrenic block copolymer thermoplastic elastomer, specifically a hydrogenated styrene-ethylene-butylene-styrene triblock formulation. The designation “SEBS-Comp.” indicates a formulated SEBS matrix containing processing stabilizers, fillers, and possibly non-migrating property modifiers rather than a neat block copolymer. The hardness code 60D denotes a nominal durometer value of 60 Shore D, placing the grade at the semi-rigid end of the TPE-S portfolio. The suffix 1160 is manufacturer-specific and does not independently define viscosity, density, or tensile strength. Publicly available documentation for this exact Bada AG configuration is limited, so the following class-level information for SEBS-based TPE-S compounds with a nominal 60 Shore D hardness is presented as preliminary engineering reference only. The material is generally relevant to applications requiring stiffness, thermoplastic processing economy, and reduced reliance on heavily oil-extended soft TPE-S systems. Feasibility screening should nevertheless verify whether the lot-specific melt mass-flow rate, filler content, and stabilizer package align with the intended article’s processing and regulatory requirements.

What distinguishes a 60 Shore D SEBS compound from plasticized TPE-S grades?

In a styrenic block copolymer network, hardness is governed primarily by polystyrene endblock volume fraction and compounding oil content. At 60 Shore D, the material enters a regime in which the styrene phase contributes substantial load-bearing structure and the formulation may contain less extender oil than soft Shore A TPE-S grades. This structural shift is reflected in durometer selection: ISO 868 and ASTM D2240 are the relevant hardness methods, and Shore D rather than Shore A is required. The engineering consequences of this morphology are measurable as higher secant modulus, reduced elongation at break, improved resistance to oil bleed-out, and greater notch sensitivity. Compared with Shore A 60–80 SEBS-based TPE-S compounds, the 60D designation implies processing behaviour closer to semi-rigid styrene copolymers than to conventional soft-touch elastomers. Melt flow under low-shear conditions may require higher stock temperatures, and pressure drop across gates and runners is generally higher. Substitution of a Shore A TPE-S or plasticized PVC should not occur without re-evaluating impact resilience, low-temperature flexibility, and sealability, because increased hard-phase continuity changes both the stress-strain curve and recovery behaviour after deformation.

Mechanical assessments for a 60 Shore D SEBS-based compound are typically performed using tensile procedures from ISO 37:2017 or DIN EN ISO 527-1:2019, depending on whether the material is treated as a rubber or a quasi-plastic. Density is evaluated under ISO 1183-1:2019; for comparable SEBS-based compounds in this hardness class, density is often observed between 1.10 g/cm³ and 1.20 g/cm³. Tensile strength commonly falls from 15 MPa to 25 MPa, while elongation at break may extend from 300% to 500% depending on filler and oil loadings. Tear initiation resistance measured with ISO 34-1:2015 Method B is typically in the 70 kN/m to 110 kN/m range. Compression set after 24 h at 70 °C under ISO 815-1:2014 is generally higher than 40% unless a crosslinking modifier or optimized polystyrene block distribution is present. These values are not certified Bada AG product limits; they constitute a class-level property envelope for preliminary comparison with other TPE families and hardness grades. For production validation, exact specification windows, test speeds, specimen preparation, and conditioning atmosphere must be taken from the current Bada AG datasheet.

Processing parameter interdependencies: drying, shear heating, and clamp force

On production-scale injection-moulding equipment, SEBS-based TPE-S compounds with 60 Shore D hardness are generally started with barrel temperatures between 190 °C and 240 °C. The actual profile for BADAFLEX® SEBS-Comp. TPE-S 60D 1160 must be taken from the lot-specific processing guide; the following ranges are equipment-dependent starting points for screw diameters from 30 mm to 50 mm and L/D ratios from 18:1 to 24:1. Mould temperatures from 20 °C to 50 °C are commonly used, but high-gloss surfaces may require the upper end of this range to avoid flow marks. Pre-drying is recommended when storage has occurred above 60% RH; a desiccant dryer at 80 °C for 2 h to 4 h with a dew point at or below -30 °C is a conservative starting condition. Production observations on comparable grades show that gate blush and surface delamination can occur when melt temperature exceeds the stabilizer package’s design limit, while short shots occur in multi-cavity tools when clamp force is insufficient for the projected cavity area and injection pressure. Gate shear rates above 20,000 s⁻¹ have been associated with visible flow instabilities in hard TPE-S systems, although the exact threshold depends on gate geometry and melt elasticity. Back pressure from 5 bar to 15 bar hydraulic, or equivalent specific pressure, is typical for homogeneous melt quality. Screw rotation speed should be set low enough to avoid excessive shear heating; nozzle melt temperature measured with an immersion thermocouple is more reliable than screw surface speed alone.

Tooling design for semi-rigid SEBS-based TPE-S compounds requires attention to gate size and vent depth because gas entrapment in stiff-flow melt may produce burning or short shots. Freeze-off at the gate can be more pronounced than in soft TPE-S, partly because low-shear viscosity remains higher. Gates should be located at the thickest section and sized according to wall thickness; a typical round gate diameter of 0.8 mm to 1.5 mm is used for wall thicknesses up to 2.5 mm, but the exact recommendation depends on flow length and mould temperature. Vent depths of 0.02 mm to 0.03 mm are commonly cited for TPE-based materials, and vents should be maintained because styrenic degradation deposits can accumulate on tool surfaces. Hot-runner systems should be evaluated for dead spots; the product should not be held at upper melt temperature for more than 10 min if the manufacturer has not supplied a retention-time study. Clamp force calculations should use the projected area and expected injection pressure; actual cavity pressures in hard TPE-S can approach 300 MPa in thin-wall sections, so a factor of safety based on the machine’s hydraulic capability is recommended.

For two-shot moulding with rigid substrates, preheating of the substrate is often used to bring surface temperature to 80 °C or higher before the TPE-S injection. The optimum substrate surface temperature for BADAFLEX® SEBS-Comp. TPE-S 60D 1160 should be obtained from Bada AG technical service because it depends on the substrate grade and mould cooling layout. Insufficient substrate temperature can produce weak bonding even when the TPE melt is at the correct temperature, and excessive substrate temperature can cause warpage in thin rigid sections. In insert moulding, surface contamination from release agents or moisture on the insert is a common source of adhesive failure; cleaning and immediate processing after insert drying are recommended. Bond strength is tested on prototype plaques with a defined insert surface and peel geometry based on ISO 813 or an OEM-specific adaptation. Published data for this specific Bada AG grade in overmoulding configurations are limited; process capability studies on the production tool are the sole acceptable basis for setting release limits.

When insert-moulded components are produced in multi-cavity tools, the combination of high durometer and styrenic surface energy influences bond formation with polypropylene. Adhesion to polypropylene substrates is generally evaluated by a peel test based on ISO 813 or an OEM-specific adaptation, with cohesive failure in the TPE layer preferred over adhesive separation. BADAFLEX® SEBS-Comp. TPE-S 60D 1160 may be considered for automotive cable retention clips, connector strain-relief bodies, power tool housings, and industrial protective sleeves where snap-fit assembly and moderate flexural stiffness are required. These applications require heat ageing validation according to ISO 188 or an equivalent long-term thermal resistance test, because the glassy styrene domains may lose strength above the service ceiling. Chemical resistance testing is performed under ISO 1817:2022 when the article contacts lubricating greases, glycol-based coolants, or dilute cleaning agents. Design for low-temperature impact must account for the inherent stiffness of the 60D hardness class; sufficient flexibility below -10 °C should not be assumed without formulation-specific testing. Published data for the exact Bada AG configuration under dynamic fatigue and insert-moulding adhesion are limited; prototype tool trials are required before volume production.

Compared with TPE-U polyester or polyether grades, the saturated SEBS backbone reduces the number of hydrolyzable ester linkages, which generally improves resistance to humid ageing but lowers abrasion resistance as measured by ISO 4649. SEBS-based TPE-S in the 60 Shore D class also has lower density than many reinforced TPU materials and is easier to process in multi-shot moulding with controlled melt temperatures. When compared with dynamically vulcanized TPV, the SEBS compound typically shows reduced compression set resistance at temperatures above 100 °C but may offer better colouring latitude, less odour from sulfur-based cure systems, and lower gloss variation after repeated recycling. Against glass-fibre-reinforced polypropylene, the Bada AG grade may provide reduced density and improved impact-noise attenuation, but flexural modulus and heat deflection temperature will be lower. Selection cannot rest on a single property value; the certifying dossier for BADAFLEX® SEBS-Comp. TPE-S 60D 1160 should be compared directly with the competing material’s datasheet using the same specimen geometry and conditioning protocol.

Compliance documentation for Bada AG BADAFLEX® SEBS-Comp. TPE-S 60D 1160 is controlled by the manufacturer and must be requested as a current, dated certificate. Typical regulatory assessments for SEBS-based TPE-S compounds may include REACH documentation, RoHS Directive 2011/65/EU recast (EU) 2015/863, and, for food-contact articles, migration testing under EU 10/2011. United States FDA status is not assumed; if relevant, the product’s formulation must be checked against 21 CFR 177.2600 or other applicable sections. The final article geometry, migration testing, and lot-specific evidence determine conformity. The material is not considered suitable for implantable medical devices, potable water pressure pipes, or continuous immersion in strong oxidizing acids at temperatures above 70 °C without dedicated validation. No declaration of conformity should be transferred from generic SEBS chemistry to this exact grade without receiving the manufacturer’s regulatory statement.

Warehouse storage for SEBS-based compounds should maintain the product in sealed original containers below 40 °C and away from direct ultraviolet irradiation. Batch-to-batch variation in filled hard TPE-S grades is generally reduced when the manufacturer controls styrene block ratio, filler moisture, and melt viscosity; incoming inspection should include hardness and density according to ISO 868 and ISO 1183-1, plus melt mass-flow rate according to ISO 1133-1:2022 at the temperature and load specified on the certificate of analysis. No published melt flow index for BADAFLEX® SEBS-Comp. TPE-S 60D 1160 is reproduced here because the value is lot-specific and dependent on drying history. Storage beyond 24 months, even in unopened bags, should trigger re-testing and possible re-drying before production use. The same quality gate should apply after container damage, pest ingress, or temperature excursion above 60 °C during transport.