YUELIAN YL-S70 Advanced Electromechanical Tensile Testing Machine for Adhesive Tape Electrostatic Performance Evaluation

Overview

The YUELIAN YL-S70 is a high-precision electromechanical tensile testing machine engineered for standardized evaluation of electrostatic performance in pressure-sensitive adhesive tapes—including peel adhesion, tack, shear resistance, and charge decay behavior under controlled mechanical stress. While not a dedicated electrostatic meter, the YL-S70 integrates calibrated force-displacement-time acquisition with synchronized environmental monitoring capability (when paired with optional surface resistivity or charge decay modules), enabling correlation of mechanical deformation events—such as tape separation, slippage, or substrate delamination—with transient electrostatic responses. Its design complies with fundamental mechanical test principles defined in ISO 11357-3 (plastics—DSC), ASTM D3330 (peel adhesion of pressure-sensitive tapes), and ISO 8510-2 (tack measurement), serving as a foundational platform for labs conducting electrostatic safety validation per IEC 61340-2-1 (electrostatics—measurement of charge decay) and ANSI/ESD S20.20 (ESD control programs). The system employs a brushless AC servo motor coupled to a preloaded precision ball screw transmission, ensuring minimal backlash, thermal stability, and repeatable load application across extended test cycles.

Key Features

• Class 0.5 force accuracy certified per ISO 7500-1, supported by dual-range load cell options (10 N–5 kN standard; optional dual-capacity configuration available)
• Ultra-high displacement resolution of 1/500,000 mm enables detection of sub-micron deformation onset during tape–substrate interface failure
• Seven programmable test intervals, 40 manual data points, and 120 auto-sampled points per curve support multi-phase electrostatic event mapping (e.g., initial contact, dwell, peel initiation, charge dissipation)
• Real-time concurrent plotting of force–displacement, force–time, displacement–time, and stress–strain curves with crosshair cursor, zoom, pan, and overlay functions
• Multi-mode closed-loop control: constant rate of extension (CRE), constant load, constant strain, constant stress rate, and custom multi-step cyclic profiles with automatic return-to-start and fracture detection
• Integrated hardware safeguards: over-travel limit switches, overload cut-off, emergency stop button, and software-enforced upper/lower force bounds
• Modular quick-connect fixture interface compatible with ASTM D1000-compliant tape grips, 180° peel jigs, loop tack fixtures, and optional non-contact electrostatic voltmeter mounting brackets

Sample Compatibility & Compliance

The YL-S70 accommodates adhesive tapes up to 150 mm wide and substrates including PET, PVC, aluminum foil, corrugated board, and coated paper. Fixture adaptability supports ISO 2922 (tack roll), ASTM D6195 (rolling ball tack), and IEC 61340-4-1 (electrostatic properties of flexible packaging) sample geometries. All mechanical test routines are traceable to national metrology standards via factory calibration certificates (NIST-traceable force and displacement references). The system architecture permits integration into GLP/GMP environments: audit trail logging, user access levels, electronic signatures, and 21 CFR Part 11–compliant data integrity controls are enabled through optional software licensing.

Software & Data Management

The proprietary PC-based control and analysis suite provides raw data export in CSV, TXT, and XML formats, with native compatibility for MATLAB, Python (via Pandas), and LabVIEW APIs. Statistical reporting includes maximum, minimum, mean, trimmed mean (excluding top/bottom 5%), median, standard deviation, population SD, and process capability index (Cpk) — essential for QC batch release against internal electrostatic specifications. Historical test curves can be overlaid for comparative analysis across material lots, humidity conditions, or grounding configurations. All test methods are saved as reusable templates with embedded metadata (operator ID, timestamp, environmental notes, calibration status), ensuring full method reproducibility.

Applications

• Quantifying peel force–voltage hysteresis in ESD-safe masking tapes used in semiconductor cleanrooms
• Correlating shear creep displacement with surface potential decay rates in medical-grade acrylic tapes
• Evaluating static charge generation during unwinding of conductive copper foil tapes per IPC-TM-650 2.6.3.3
• Validating electrostatic discharge (ESD) survivability of tape-backed shielding gaskets under mechanical flexure
• Supporting root-cause analysis of field failures in automotive harness tapes exposed to triboelectric charging
• Generating input parameters for finite element models simulating tape–substrate interfacial charge trapping

FAQ

Does the YL-S70 directly measure surface voltage or charge?

No — it is a mechanical test platform. Direct electrostatic measurement requires external instrumentation (e.g., Trek 341B electrostatic voltmeter or Monroe 278A charge plate monitor), which can be synchronized via TTL trigger output and analog voltage input channels.
Can the system comply with ISO/IEC 17025 accreditation requirements?

Yes — when operated with documented procedures, periodic verification using certified reference standards, and validated software, the YL-S70 meets technical competence criteria for mechanical property testing within accredited laboratories.
Is the displacement resolution of 1/500,000 mm achievable across the full 500 mm stroke?

Yes — resolution is maintained throughout the stroke via high-resolution rotary encoder feedback on the servo motor shaft, independent of mechanical amplification.
What environmental conditions must be controlled during electrostatic tape testing?

Per IEC 61340-5-1, tests should be conducted at 23 ± 2 °C and 25 ± 5 % RH unless otherwise specified; the YL-S70 chassis includes provisions for integrating temperature/humidity sensors and environmental chamber interfaces.
Are firmware updates and calibration files provided post-purchase?

Yes — registered users receive lifetime access to firmware patches, calibration certificate templates, and updated test method libraries via secure customer portal.