Yuelian YL-S70 Computer-Controlled Tensile Testing Machine for Release Force Measurement (GB/T 2792 Compliant)

Overview

The Yuelian YL-S70 is a high-precision, computer-controlled electromechanical tensile testing machine engineered specifically for release force measurement of pressure-sensitive adhesive (PSA) materials—including label liners, silicone-coated papers, and filmic release substrates—in strict accordance with GB/T 2792–2014 (“Test Method for Release Force of Pressure Sensitive Adhesive Tape”). It operates on the fundamental principle of controlled uniaxial separation: a standardized peel geometry (typically 180° or 90°) is applied at a constant speed to detach an adhesive-coated specimen from its release liner, while load cells and displacement encoders capture real-time force and displacement data. The system’s dual-range load cell architecture supports seamless transition between low-force measurements (e.g., 10 N for delicate siliconized papers) and higher-force regimes (up to 5 kN for reinforced carrier films), ensuring metrological integrity across diverse substrate classes. Its rigid aluminum-alloy frame, precision-ground ball screw transmission, and AC servo drive deliver exceptional positional repeatability and dynamic response—critical for capturing transient peel initiation events and steady-state release plateau behavior.

Key Features

• Full PC-based closed-loop control with customizable multi-step test protocols—including constant-speed, constant-load, constant-displacement, and rate-controlled stress/strain modes.
• Dual-capacity load cell configuration enables rapid switching between high-sensitivity (e.g., 10 N) and high-load (e.g., 5 kN) measurement ranges without hardware recalibration.
• Real-time synchronized plotting of up to four independent curves: Force vs. Displacement, Force vs. Time, Displacement vs. Time, and Stress vs. Strain—with zoom, pan, crosshair cursor, and point extraction tools.
• Advanced statistical engine supporting 120 auto-capture points, 40 manual markers, and seven user-defined analysis intervals per test; outputs include max/min/mean values, trimmed mean (excluding top/bottom 5%), median, standard deviation, population SD, and CPK capability indices.
• Comprehensive safety architecture: overload cutoff, emergency stop button, specimen rupture auto-stop, upper/lower limit position interlocks, over-travel protection, and bidirectional load cell polarity switching.
• Modular quick-connect fixture interface compatible with standardized GB/T 2792 peel jigs, tensile grips, compression platens, bending fixtures (3-point/4-point), shear adapters, and puncture probes.

Sample Compatibility & Compliance

The YL-S70 accommodates a broad spectrum of release liner and PSA specimens per ISO 2922, ASTM D3330, PSTC-101, and GB/T 2792 requirements. Standard test widths range from 10 mm to 50 mm; specimen thicknesses up to 3 mm are supported within the Ø140 mm test chamber. The machine meets mechanical accuracy Class 0.5 per ISO 7500-1 and is suitable for laboratories operating under GLP and GMP frameworks. While not inherently 21 CFR Part 11 compliant, audit-ready data export (CSV, XML, PDF) and full traceability—including operator ID, timestamp, environmental metadata (if integrated with optional sensors), and raw acquisition logs—facilitate regulatory submissions. All firmware and software revisions are version-controlled and documented for IQ/OQ validation support.

Software & Data Management

The proprietary YL-TestSuite v4.x software provides intuitive workflow-driven test definition, real-time visualization, and post-processing analytics. Each test record stores raw 2000-Hz acquisition data, parameter settings, calibration certificates, and operator annotations in a structured SQLite database. Export functions support CSV (for Excel/Origin), XML (for LIMS integration), and encrypted PDF reports with embedded digital signatures. Audit trails log all user actions—including method edits, result overrides, and calibration events—with immutable timestamps. Optional network deployment allows centralized data repository management and role-based access control (RBAC) for multi-user lab environments.

Applications

• Quantitative release force profiling of silicone-coated release papers and PET/film liners used in labeling, medical tape, and electronics die-cutting.
• Comparative evaluation of liner aging effects (e.g., post-curing, thermal exposure, humidity cycling) on peel adhesion stability.
• QC/QA verification of incoming liner batches against internal specifications or customer technical agreements.
• Developmental testing of novel low-tack or ultra-low-release coatings requiring sub-10 mN resolution.
• Multi-mode mechanical characterization beyond peel: tensile strength of backing films, compressive resilience of foam liners, cyclic fatigue of composite laminates, and puncture resistance of coated substrates.

FAQ

Does the YL-S70 comply with GB/T 2792–2014 test conditions?
Yes—the system implements the prescribed 180° peel geometry, 300 mm/min nominal speed (adjustable within 0.001–500 mm/min), and 25 mm specimen width tolerance, with automatic calculation of average release force over the stabilized portion of the curve.
Can it be validated for ISO/IEC 17025 accredited labs?
Yes—full calibration documentation, uncertainty budgets per ISO/IEC 17025 Annex A.1, and traceable NIST-traceable load cell certification kits are available upon request.
Is third-party software integration (e.g., LabWare LIMS) supported?
Yes—via TCP/IP socket API and standardized ASTM E1382-compliant data export templates.
What maintenance is required for long-term accuracy?
Annual verification of load cell linearity and displacement encoder fidelity is recommended; routine cleaning of the ball screw and lubrication per manufacturer schedule ensures >10-year operational reliability.
Are custom fixtures for non-standard peel angles available?
Yes—Yuelian offers OEM-designed 90°, 45°, and floating-arm peel fixtures, all mechanically referenced to ISO 8510-2 alignment tolerances.