Tuofeng TFL-21S Computer-Controlled Electronic Tensile Testing Machine
| Brand | Tuofeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | TFL-21S |
| Maximum Test Load | 5 kN |
| Force Measurement Range | 0.4%–100% of Full Scale (FS) |
| Force Accuracy | ±0.5% of reading |
| Crosshead Travel | 700 mm |
| Displacement Resolution | ±0.5% of reading |
| Test Speed Range | 0.01–500 mm/min (infinitely variable) |
| Position Sensing | Optical Encoder |
| Protection Features | Electronic limit switches, emergency stop, overload protection (>110% FS) |
| Power Supply | 220 V, 50 Hz, 400 W |
| Dimensions (W×D×H) | ~460 × 460 × 1500 mm |
| Weight | ~120 kg |
| Compliance | GB, ISO 527, ASTM D638/D882/D3083, DIN 53455, JIS K7113 |
Overview
The Tuofeng TFL-21S is a precision-engineered computer-controlled electronic tensile testing machine designed for static mechanical property evaluation of flexible and semi-rigid materials. Based on the fundamental principle of uniaxial force application under controlled displacement or load rate, it delivers high reproducibility in measuring tensile strength, elongation at break, yield point, modulus of elasticity, tear resistance, peel adhesion, and puncture performance. Its modular architecture supports standardized test protocols across polymer films, woven plastic sacks, laminated packaging, textile fibers, metallic foils, elastomeric strips, and adhesive tapes—making it an essential instrument in QC laboratories, R&D centers, and contract testing facilities serving packaging, automotive, medical device, and consumer goods industries.
Key Features
- High-resolution force measurement system with ±0.5% accuracy over 0.4–100% FS range, utilizing strain-gauge-based load cell technology calibrated traceable to national standards.
- Stable crosshead travel of 700 mm with optical encoder-based position feedback ensuring ±0.5% displacement accuracy; optional height extension available upon request.
- Infinitely variable speed control from 0.01 to 500 mm/min, enabling precise replication of industry-standard strain rates per ASTM D882 (plastic film), ISO 527 (thermoplastics), or GB/T 1040 (general plastics).
- Dual-mode operation: load-controlled and displacement-controlled testing, supporting both constant-rate-of-traverse (CRT) and constant-rate-of-loading (CRL) methods.
- Integrated safety architecture including programmable electronic limit switches, hardware-based emergency stop circuitry, and automatic overload cutoff at 110% of rated capacity.
- Motorized crosshead with three-speed preset modes (fast/medium/slow) and programmable return-to-start functionality—either auto-triggered post-test or manually initiated.
- Robust dual-column frame construction with rigid aluminum alloy base and reinforced steel uprights, minimizing deflection during high-load cycles.
Sample Compatibility & Compliance
The TFL-21S accommodates specimens ranging from thin polymer films (e.g., PP/PE woven sack substrates) to composite laminates and fiber-reinforced webs. Standard fixtures include pneumatic or mechanical wedge-action grips, peel test fixtures (90°/180°), tear testers (Elmendorf-type compatible), and custom-designed clamps for irregular geometries such as bag handles or seam joints. The system fully supports international testing standards including ASTM D638 (tensile properties of plastics), ASTM D882 (thin plastic sheeting), ISO 527-2 (determination of tensile properties), GB/T 1040.1–2018 (Chinese national standard for plastic tensile testing), DIN 53455 (tensile testing of rubber and plastics), and JIS K7113 (plastics tensile testing). All calibration and verification procedures align with ISO/IEC 17025 requirements for testing laboratories.
Software & Data Management
The Windows-based TensileTest Pro™ software (v4.2+) provides full GLP-compliant data acquisition and analysis. It supports multilingual UI (English, Simplified/Traditional Chinese), customizable unit systems (N/kN/lbf, mm/inch, MPa/psi), and real-time plotting of up to four simultaneous curves: load vs. time, load vs. displacement, displacement vs. time, and stress vs. strain. Automated calculations include tensile strength, yield strength, modulus (secant/tangent), elongation at break, tear strength, peel adhesion energy (J/m), and coefficient of variation across replicate tests. Each test record includes metadata (operator ID, timestamp, environmental conditions), raw data export (CSV, XML), PDF report generation with embedded graphs and statistical summaries, and audit-trail logging compliant with FDA 21 CFR Part 11 when configured with user authentication and electronic signature modules. Data retention and backup are configurable via network drive mapping or local encrypted storage.
Applications
This instrument is routinely deployed for quality assurance of woven polypropylene (PP) and polyethylene (PE) bulk bags, FIBC liners, food-grade laminated pouches, agricultural mesh, geotextiles, and medical packaging films. Typical use cases include verifying compliance with UN 1A2/1B2 certification requirements for transport packaging, validating seam integrity in heat-sealed closures, assessing UV degradation effects on tensile retention after accelerated aging, comparing batch-to-batch consistency in extruded monofilament yarns, and evaluating cold-temperature brittleness of HDPE sack materials per ASTM D746. In academic settings, it serves as a platform for structure–property correlation studies linking weave density, coating thickness, and filler content to macroscopic mechanical behavior.
FAQ
What standards does the TFL-21S support out-of-the-box?
It natively implements test method templates for ASTM D638, D882, D3083; ISO 527-2; GB/T 1040.1–2018; DIN 53455; and JIS K7113—with parameter presets for specimen geometry, grip separation, and speed profiles.
Can the system be integrated into a LIMS environment?
Yes—via ODBC-compliant database connectivity and structured CSV/XML export, enabling direct ingestion into laboratory information management systems supporting ASTM E1384 or HL7 messaging protocols.
Is third-party calibration documentation included?
Each unit ships with a factory calibration certificate traceable to CNAS-accredited metrology labs, covering force, displacement, and speed axes, valid for 12 months under normal operating conditions.
Does the software support multi-user role-based access control?
When deployed with optional Part 11 compliance module, it enforces hierarchical permissions (administrator, technician, reviewer), session locking, and immutable audit logs for all data modifications.
What is the warranty coverage and service response time?
Standard warranty is 24 months parts-and-labor; extended service plans include remote diagnostics, annual preventive maintenance, and on-site engineer dispatch within 72 business hours in Tier-1 Chinese cities.
