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SOSHH lithium battery material flexible connectors are engineered specifically for cathode (NCM, LFP) and anode (graphite, synthetic carbon black) precursor transfer. Manufactured from inherently static-dissipative polyether TPU with surface resistivity strictly below 10⁹ Ω and SGS-verified volume resistivity of 4.02×10⁷ Ω (tested per IEC 62631-3-1:2023 under Report Ref: SHMR240801578301-1), our systems deliver 100% dust-tight containment, zero metallic contamination within the product-contact bore, and high wear endurance (40 MPa tensile, 39.0 mg DIN abrasion).
Lithium-ion battery cell manufacturing has zero tolerance for metallic contamination or electrostatic hazards. Loose copper, zinc, or steel fragments short out battery separator films, causing catastrophic cell fires and scrap-batch recalls. At the same time, high-velocity pneumatic transfer of fine electrode particles generates extreme triboelectric charges. SOSHH eliminates external metal grounding straps, combining intrinsic polymer dissipation, high tensile strength, and metal-free product contact.
Conventional clamped canvas and rubber sleeves fail under the rigorous chemical, purity, and safety demands of modern gigafactories:
Micronized carbon black, graphite, and organic additives generate high triboelectric voltage during pneumatic conveying and sifter oscillation. Standard non-conductive sleeves act as capacitors, accumulating static until an incendiary brush discharge ignites the combustible dust cloud. SOSHH dissipative TPU maintains surface resistivity below 10⁹ Ω and volume resistivity of 4.02×10⁷ Ω, bleeding charges to ground before sparks can form.
Traditional flexible joints rely on exposed steel band clamps, brass eyelets, or external copper grounding braids. Mechanical vibration causes these metallic elements to fretting-corrode and shed conductive metal particles directly into the cathode or anode slurry path. SOSHH connectors feature high-frequency welded exterior cuffs; the retention band sits completely outside the fluid flow path, ensuring the entire product-contact bore is 100% non-metallic.
Cathode precursors (NCM/LFP) and hard carbon particles feature sharp, crystalline morphology that abrades standard silicone, vinyl, and woven canvas within weeks. SOSHH uses high-density virgin polyether TPU engineered to 40 MPa tensile strength, 600% elongation at break, and 39.0 mg DIN abrasion loss, outlasting traditional fabric sleeves under heavy vibratory duty.
| Engineering Parameter | SSOT Verified Specification | Battery Manufacturing Impact |
| Base Polymer Matrix | Static-Dissipative Polyether TPU | Inherent charge dissipation; 100% hydrolytically stable |
| Surface Resistivity (Rs) | < 10⁹ Ω | Dissipative rating; prevents surface static accumulation |
| Volume Resistivity (Rv) | 4.02×10⁷ Ω | Verified by SGS Shanghai (Report Ref: SHMR240801578301-1) |
| Electrical Test Standard | IEC 62631-3-1:2023 | Authoritative laboratory dielectric & resistive compliance |
| Metallic Contamination | 100% Metal-Free Product Bore | Zero copper (Cu), zinc (Zn), or exposed steel in contact zone |
| Tensile Strength | 40 MPa | Resists pressure surges and high-velocity pneumatic loads |
| Elongation at Break | 600% | High elasticity absorbs continuous multi-axis sifter strokes |
| DIN Abrasion Loss | 39.0 mg (DIN ISO 4649) | High mechanical resistance against abrasive NCM / LFP / graphite |
| Standard Thickness | 1.0 mm (PU-10-AS) | Optimal engineering balance between flex fatigue and wear life |
| Thermal Envelope | −20 °C to +110 °C | Withstands continuous process heat and washdown |
| Custom High-Temp / Solvent | CNC-Machined Virgin PTFE | Up to +260 °C continuous service; immune to NMP solvent vapors |
| Standard Diameter Range | Ø102 mm to Ø804 mm | Zero tooling charges on custom transitions, cones, and offsets |
A common misunderstanding in hazardous-area plant design is assuming an anti-static sleeve eliminates plant grounding requirements:
ATEX certification applies to complete operational equipment assemblies rather than standalone passive sleeves. SOSHH provides the official SGS test report (Report Ref: SHMR240801578301-1, tested per IEC 62631-3-1:2023) verifying volume resistivity of 4.02×10⁷ Ω and surface resistivity below 10⁹ Ω to support your site hazardous-area and ATEX Zone risk assessments.
No. The dissipative sleeve prevents localized charge build-up on the connector wall, but the metal docking spigots and process piping must be bonded to the facility grounding grid. The sleeve transfers accumulated charges directly into those grounded spigots.
No. All mechanical snap-bands and structural elements are encased in high-frequency welded exterior cuff pockets. The internal contact bore consists exclusively of smooth, non-porous polyether TPU, guaranteeing zero metal-to-powder contact and preventing false inline metal detector triggers.
Our polyether TPU formulation provides 40 MPa tensile strength, 600% ultimate elongation, and DIN abrasion loss limited to 39.0 mg. This mechanical matrix resists cutting and abrasive wear from sharp-edged cathode precursors and hard synthetic graphite far better than silicone or fabric.
Yes. Standard 1.0 mm sleeves handle low-pressure gravity drops and screener discharges. For high-velocity dilute or dense-phase pneumatic lines, we supply heavy-wall options and external stainless steel support rings to prevent vacuum collapse or pressure ballooning.
Confirm static dissipation (< 10⁹ Ω) and abrasion resistance for your electrode line. Submit the following five parameters directly to amin@soshh.com:
Our engineering team returns a watermarked 2D outline drawing, SGS electrical test documentation, and quotation within 24 hours.
SGS Certified FDA Compliant Food Safe
SGS certified PU flexible connection supplier
Tested for ATEX Antistatic Requirements
RoHS & REACH Environmental Compliance
ISO 9001:2015 Certified System
FDA 21 CFR 177.2600 Compliance
