Direct manufacturer supply for international converters, OEMs, and tier-1 assembly plants. Fully compliant with RoHS, REACH, and UL 510 flame retardancy standards.
Uncompromising thermal endurance, mechanical tear resistance, and solvent absorption resilience for the most demanding electrified power ecosystems.
Glass cloth pressure-sensitive adhesive (PSA) tapes rely on continuous alkali-free electrical grade (E-Glass) yarns woven in plain and twill architectures. With typical woven thread counts ranging between 60×45 and 75×50 threads per inch, this inorganic carrier delivers unmatched dimensional stability, zero creep under high-tension coil winding, and tensile breaking forces exceeding 200 N/cm. It is inherently non-flammable, highly resistant to oxidation, and retains mechanical integrity far above polymeric film thresholds.
The operational lifespan of a glass cloth tape is governed by its adhesive matrix. Huayuan provides two primary adhesive architectures: Thermosetting Cross-Linked Silicone systems capable of continuous 200°C exposure (Class H) and excursion survival up to 260°C, and Solvent Acrylic systems engineered for 155°C (Class F) environments requiring extreme resistance to Freon, synthetic transformer oils, and harsh liquid resin potting mixtures during VPI processes.
As modern automotive platforms migrate from 400V to 800V architectures driven by Silicon Carbide (SiC) and Gallium Nitride (GaN) switching electronics, the electrical insulation demands placed on traction motors have skyrocketed. High dV/dt transient voltage spikes induce localized dielectric stress, partial discharge, and micro-arcing. Glass cloth tapes provide high porous varnish soakability, mechanically reinforcing slot liners and phase insulation barriers.
A benchmark comparison demonstrating Huayuan Tape Glass Cloth engineering parity with international standard formulations such as 3M 69, 3M 79, and Nitto 188UL under ASTM D1000 and IEC 60454-3-8 protocols.
| Physical / Electrical Property | Test Standard | Huayuan HY-6900 (Silicone) | Huayuan HY-7900 (Acrylic) | Industry Standard Equivalent |
|---|---|---|---|---|
| Carrier Substrate | ASTM D374 | Woven E-Glass Fabric (0.13mm) | Woven E-Glass Fabric (0.13mm) | Woven Glass Cloth (Class H/F) |
| Total Caliper (mm / mils) | ASTM D1000 | 0.18 ± 0.015 mm (7.0 mils) | 0.17 ± 0.015 mm (6.7 mils) | 0.177 mm (7.0 mils) |
| Thermal Insulation Class | IEC 60085 | Class H (180°C - 200°C) | Class F (155°C) | Class H / Class F |
| Dielectric Breakdown Voltage | ASTM D149 / IEC 60243 | ≥ 3,500 Volts (3.5 kV) | ≥ 3,000 Volts (3.0 kV) | 3,000 V |
| Tensile Breaking Strength | ASTM D3759 | ≥ 280 N / 25mm (65 lbs/in) | ≥ 260 N / 25mm (60 lbs/in) | ≥ 260 N / 25mm |
| Elongation at Break (%) | ASTM D3759 | 5.0% Max (Dimensionally Stable) | 5.0% Max | 5.0% |
| Adhesion to Steel (180° Peel) | ASTM D3330 | 8.0 - 11.0 N / 25mm | 9.0 - 12.5 N / 25mm | 8.8 N / 25mm |
| Electrolytic Corrosion Factor | ASTM D1000 | 1.0 (Corrosion-Free) | 1.0 (Corrosion-Free) | 1.0 |
| Flame Retardancy Rating | UL 510 / UL 94 | UL 510 Flame Retardant | UL 510 Self-Extinguishing | UL Recognized (E17385) |
| Varnish Absorption / Retention | Proprietary VPI Test | Excellent (Open Weave Matrix) | Excellent (Thermoset Lock) | High Porosity Interlock |
Delivering failure-proof structural bonding and electrical protection where typical polymeric film tapes fail due to thermal melting, outgassing, or mechanical shear.
In heavy-duty AC/DC induction motors, wind turbine alternators, and locomotive drives, tape glass cloth acts as an indispensable structural barrier. It is utilized to bind armature stator end-turns, secure lead-wire harnesses, insulate connection crossovers, and reinforce coil slot cells. When soaked in baking varnishes or epoxy resins during Vacuum Pressure Impregnation (VPI), the porous fiberglass fabric absorbs the resin, creating a monolithic, air-void-free dielectric casing capable of withstanding intense mechanical vibrations and continuous thermal cycling.
Power distribution and step-up dry-type transformers operate at elevated thermal baselines where organic film tapes (such as PVC or standard polyester) succumb to embrittlement, dielectric degradation, or shrinkage. Tape glass cloth provides outer-wrap protection for copper windings, inter-layer coil barrier isolation, and lead anchor strapping. Its superior tear propagation resistance guarantees that sharp copper busbar edges will not pierce the insulation barrier during thermal expansion and contraction cycles.
Beyond electrical insulation, Huayuan glass cloth tapes serve as heavy-duty thermal masking mediums in aerospace engine overhaul, turbine blade rebuilds, and industrial surface modification. Engineered to withstand direct exposure to plasma spray temperatures exceeding 250°C and aggressive blast media (aluminum oxide / silicon carbide grit), the high-density glass fabric shields sensitive surfaces. The proprietary silicone adhesive peels cleanly after baking with zero sticky residues on polished alloy substrates.
Operating dual smart production bases in Zhuhai and Zhongshan, Guangdong Province, certified under ISO 9001:2015 with integrated Hong Kong trade operations.
Our Zhuhai facility utilizes high-precision continuous web coating towers equipped with automated multi-zone drying ovens and real-time beta-gauge isotope thickness monitors. By strictly regulating wet adhesive coat weight within ±1.0 g/m² across master web widths of up to 1,060 mm, Huayuan eliminates edge bead defects, voids, and coating skips, ensuring absolute dielectric uniformity from edge to center across kilometers of jumbo roll stock.
Particles and lint present catastrophic failure risks in high-voltage windings. Huayuan conducts all rewinding, multi-blade lathe slitting, and log slicing within certified Class 10,000 dust-free workshops. Our imported servo-controlled slitters handle narrow slitting down to 2.0 mm (with precision tolerances of ±0.2 mm) without edge fraying, loose glass filaments, or telescoping, guaranteeing smooth feed rates on automated high-speed coil taping machines.
Established as an independent division in 2013, our precision rotary and flatbed die-cutting capabilities transform tape glass cloth into custom pre-formed gaskets, slotted terminal washers, round donut insulators, and tab-extended kiss-cut shapes. Supplied on dimensionally stable fluoropolymer release liners, our custom die-cut components reduce manual assembly labor for consumer electronics and automotive harness builders globally.
Anticipating the stringent demands of aerospace lightweighting, 1000V solid-state EV battery packs, and ultra-high-temperature semiconductors.
To overcome the pinhole permeability of woven fibers while eliminating the elongation-induced shear of pure polyimide (Kapton) films, Huayuan R&D is pioneering PI-Glass laminates. By fusing a 0.025 mm micro-thin polyimide dielectric core directly to a 0.05 mm ultra-dense glass cloth carrier using heat-activated cross-linking primers, this composite tape achieves over 7,500V dielectric breakdown alongside rock-solid dimensional stability and tear resistance.
Aligned with European Green Deal carbon footprint standards and Scope 1/2 emissions reduction targets, our chemical engineering group is scaling 100% solids silicone hot-melt technology. Eliminating toluene and ethyl acetate solvents from the manufacturing chain not only lowers VOC outgassing to near-zero levels—critical for aerospace vacuum chamber applications—but also avoids solvent entrapment micro-bubbles within the adhesive layer, enhancing dielectric longevity.
Standard adhesive matrices exhibit low thermal conductivity (typically around 0.15 to 0.20 W/m·K), which creates thermal bottlenecks inside tightly packed motor windings. Huayuan’s advanced development team is incorporating surface-treated functionalized nano-silica and hexagonal boron nitride (h-BN) platelets into the cross-linked adhesive slurry. This increases planar thermal conductivity to >0.85 W/m·K without sacrificing dielectric breakdown strength or tack performance.
Ensuring zero border disruption, zero hazardous substance contamination, and end-to-end traceability for international procurement officers.
Every raw yarn bobbin, silicone elastomer resin, cross-linking agent, and liner substrate integrated into Huayuan glass cloth tapes undergoes stringent annual laboratory screening via SGS and TÜV Rheinland. Full compliance is guaranteed with EU RoHS Directive (EU) 2015/863 amending Annex II to Directive 2011/65/EU, as well as the complete EU REACH Substances of Very High Concern (SVHC) list. Formal lab test reports are archived and provided alongside Certificates of Analysis (COA) for every export container.
Operating our core manufacturing plants in Nanping Science and Technology Park (Zhuhai) and Tanzhou Town (Zhongshan), Huayuan leverages unmatched proximity to Hong Kong, Shenzhen, and Guangzhou international freight ports. Coupled with our offshore subsidiary, Huayuan International Technology (Hong Kong) Co., Ltd. (established in 2014), we ensure flexible multi-currency settlement (USD, EUR, HKD), streamlined customs documentation, and bonded air/sea freight routing for tier-1 supply networks worldwide.
Following strict ISO 9001:2015 guidelines, every production batch is assigned a unique tracking barcode that preserves master roll coating history, thermal oven humidity logs, operator IDs, and post-curing timestamps. Finished rolls undergo destructive 180° peel adhesion testing, heat shear holding resistance tests, and 1,000-hour accelerated thermal aging chamber trials (MIL-I-1916 quality sampling standards) before pallet packaging with moisture-barrier vacuum polybags.
Essential technical clarifications regarding performance, compatibility, customization, and factory qualification protocols.
Browse our expanded portfolio of heavy-duty double-sided, thermally conductive, and EMI shielding solutions engineered for extreme operational environments.
