Beiguang Jingyi BWN Series Medical Gown Tensile Testing Machine

Overview

The Beiguang Jingyi BWN Series Medical Gown Tensile Testing Machine is a precision-engineered electronic universal testing system designed specifically for mechanical performance evaluation of personal protective equipment (PPE), with primary application in the quantitative assessment of tensile strength, elongation at break, tear resistance, and seam integrity of medical gowns, surgical drapes, isolation gowns, and other nonwoven or laminated barrier fabrics. Based on quasi-static uniaxial tensile principles per ASTM D412 and ISO 37, the system applies controlled force to standardized specimens while continuously measuring load and displacement via high-fidelity transduction. Its architecture adheres to fundamental mechanics-of-materials test theory—namely, stress–strain curve derivation, yield point identification, and modulus calculation—enabling full compliance with regulatory requirements under YY/T 0506.5 (Chinese standard for hospital patient gowns) and EN 14126 (protection against infectious agents). The machine operates within defined environmental tolerances (10–35 °C, 20–80% RH, vibration- and EMI-free installation), ensuring metrological stability across clinical QA/QC, R&D, and third-party certification laboratories.

Key Features

• High-accuracy load cell (0–1 kN, ±0.5% FS) with 24-bit A/D conversion and seven-range auto-scaling (×1 to ×100), delivering force resolution of 1/100,000 FS.
• Precision crosshead motion control via servo-motor + planetary gear reducer + ball screw assembly, enabling speed regulation from 0.01 to 500 mm/min with <0.5% displacement accuracy.
• Dual-mode control architecture: closed-loop pulse-command positioning for repeatable strain-rate control and open-loop position tracking for displacement-critical protocols (e.g., seam peel tests).
• Integrated safety subsystem including overload emergency stop, upper/lower travel limit switches, leakage current cutoff, and automatic return-to-origin post-test.
• Modular fixture interface compatible with standardized tensile grips (pneumatic or mechanical), 90°/180° peel fixtures, trouser-tear clamps, and custom-designed specimen holders for nonwovens and laminates.
• Robust structural frame (665 × 455 × 1700 mm) mounted on leveled concrete foundation (flatness ≤0.2/1000), minimizing parasitic deformation during high-force testing.

Sample Compatibility & Compliance

The BWN Series accommodates flat-sheet specimens per ISO 527-2 Type 1BA, ASTM D638 Type V, and YY/T 0506.5 Annex A geometries—including 100 mm × 15 mm gowns strips, 25 mm × 150 mm seam samples, and circular disc specimens for burst testing (with optional hydraulic burst module). It supports materials ranging from spunbond polypropylene (PP), meltblown composites, SMS laminates, coated polyester, and biodegradable cellulose derivatives. All mechanical outputs are traceable to national standards (GB/T 228.1, JJG 139) and internationally recognized reference methods. The system meets essential requirements for GLP-compliant environments: audit trail logging, user access levels, electronic signature support, and 21 CFR Part 11–ready data archiving when paired with validated software configurations.

Software & Data Management

The UTM107+WIN-XP software suite provides modular, standards-driven test execution. Core capabilities include: configurable test method templates aligned with GB, ASTM, ISO, EN, and JIS standards; dynamic unit switching (N/kN/kgf/lbf, mm/cm/inch); real-time multi-curve plotting (load–displacement, stress–strain, load–time); and automated parameter extraction—tensile strength, elongation at break, Young’s modulus, yield offset (0.2%), tear initiation force, and peel adhesion energy. Data export is natively supported in .xlsx and .docx formats; all raw acquisition files (.dat) are timestamped, checksum-verified, and stored on user-defined partitions. Software validation documentation—including IQ/OQ protocols and configuration change logs—is provided for regulated lab deployment. Language localization supports English, Simplified Chinese, and Traditional Chinese interfaces without reinstallation.

Applications

This instrument serves as a primary verification tool across PPE lifecycle stages: raw material qualification (nonwoven tensile uniformity), in-process quality monitoring (seam bond strength during gown assembly), final product release testing (EN 14126 barrier performance), and post-market surveillance (aging studies per ISO 11607-1). Specific use cases include: ASTM F1819-compliant seam peel resistance of surgical gowns; YY/T 0506.5 Clause 6.3.2 tensile property verification; ISO 9073-3 tear propagation analysis of disposable drapes; and dynamic fatigue simulation of elastic waistband attachments. It also extends to adjacent biomedical applications—testing suture packaging films (ASTM D882), glove finger-tip tensile integrity (ISO 10993-12), and hydrophobic coating adhesion on respirator filter media.

FAQ

Does this system comply with FDA or EU MDR requirements for PPE testing?

Yes—when operated under documented SOPs and calibrated per ISO/IEC 17025 procedures, the BWN Series generates data acceptable for technical file submissions under EU MDR Annex II and FDA 510(k) predicate equivalence assessments.

Can it perform cyclic loading or creep tests?

Standard firmware supports static and ramp-hold protocols; optional add-on modules enable programmable multi-step load cycling and time-dependent creep/stress-relaxation sequences per ISO 899-1.

What calibration certificates are included?

Each unit ships with a factory-issued calibration report traceable to NIM (National Institute of Metrology, China), covering force, displacement, and speed channels—with uncertainty budgets stated per ISO/IEC 17025.

Is remote diagnostics or preventive maintenance support available?

Beiguang Jingyi offers annual service contracts including remote firmware updates, sensor recalibration guidance, and priority response for hardware diagnostics via encrypted SSH tunneling to authorized service engineers.