Labthink C670M Dart Impact Tester for Plastic Films and Thin Sheets (ASTM D1709, ISO 7765-1, GB/T 9639.1)
| Brand | Labthink |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Model | C670M |
| Measurement Methods | A-Method (50–2000 g), B-Method (300–2000 g) |
| Mass Accuracy | ±0.5% |
| Specimen Size | >150 mm × 150 mm |
| Pneumatic Clamping Pressure | 0.6 MPa |
| Air Interface | Φ8 mm Polyurethane Tubing |
| Power Supply | 220 VAC 50 Hz / 120 VAC 60 Hz |
| Net Weight | 70 kg |
| Dimensions (A-Method) | 500 × 450 × 1320 mm (L×W×H) |
| Dimensions (B-Method) | 500 × 450 × 2160 mm (L×W×H) |
| Standard Configuration | A-Method Assembly, 7″ Color Touchscreen, Integrated Thermal Printer |
| Optional Accessories | B-Method Kit, Labthink Professional Software, RS232 Communication Cable |
Overview
The Labthink C670M Dart Impact Tester is an electromechanically controlled instrument engineered for the quantitative determination of impact resistance in flexible packaging materials—specifically plastic films, thin sheets, laminates, foils, and paper-based substrates—under standardized free-fall dart conditions. It operates on the principle of stochastic threshold estimation per ASTM D1709 (Method A and Method B), ISO 7765-1:1988, and GB/T 9639.1–2008. The system evaluates the critical impact mass at which 50% of tested specimens fail, thereby delivering a statistically robust measure of energy absorption capacity under dynamic loading. Unlike quasi-static tensile or puncture tests, the C670M replicates real-world mechanical shock events such as drop-induced deformation during logistics handling or filling-line impact. Its design integrates electromagnetic dart release, pneumatic specimen clamping, and dual-mode algorithmic progression (up-down staircase method), minimizing operator-dependent variability and ensuring high inter-laboratory reproducibility.
Key Features
- Electromagnetic dart suspension and release mechanism ensures precise, zero-delay initiation without manual triggering or mechanical hysteresis.
- 7-inch full-color capacitive touchscreen with intuitive menu-driven interface supports rapid parameter setup—including initial mass, mass increment (Δm), test mode (A/B), and specimen count.
- Dual test modes compliant with international standards: Method A (lighter darts, lower height, suitable for thin PE/LDPE films) and optional Method B (higher mass range, extended tower height for stiffer substrates like PET or metallized laminates).
- Pneumatic specimen clamping (0.6 MPa required air supply) delivers uniform, repeatable grip force across the full 150 mm × 150 mm test area—eliminating edge slippage and localized stress concentration.
- Integrated LED observation lamp enhances visual inspection of specimen failure post-impact, supporting immediate pass/fail assessment before software analysis.
- Manual push-button and foot-switch dual activation modes accommodate ergonomic workflow integration in high-throughput QC environments.
- Modular hardware architecture enables field-upgradable B-method configuration and seamless integration with Labthink’s validated software suite.
Sample Compatibility & Compliance
The C670M accommodates a broad spectrum of flexible packaging substrates, including but not limited to: polyethylene (PE) shrink and cling films, biaxially oriented polypropylene (BOPP), polyester (PET) sheets, aluminum foil and aluminum-plastic laminates, coated paperboard, and multilayer coextruded structures used in food, pharmaceutical, and industrial packaging. All testing procedures conform to the statistical protocol defined in ASTM D1709—requiring sequential mass adjustment based on individual specimen failure outcomes until exactly ten failures (or ten non-failures) are recorded among ≥20 total trials. The instrument meets essential requirements for GLP-compliant laboratories, supporting audit-ready documentation through timestamped test logs, operator ID tagging (via software), and electronic signature capability when paired with Labthink Professional Software. It is also compatible with FDA 21 CFR Part 11 readiness packages upon software validation.
Software & Data Management
Labthink Professional Software (optional) provides comprehensive data acquisition, visualization, and reporting functionality. It records raw impact outcomes—including mass value, failure status, trial sequence, ambient temperature/humidity (when interfaced with external sensors), and operator metadata. Real-time graphical plotting displays cumulative failure probability versus impact mass, enabling immediate verification of staircase convergence. Results are exportable in CSV, PDF, and XML formats; unit conversion (g, kg, J, ft·lb) is embedded and traceable to NIST-traceable calibration certificates. The system supports RS232 serial communication for direct integration into LIMS or MES platforms. Audit trails log all parameter modifications, result deletions, or reprocessing events—ensuring full data integrity per ISO/IEC 17025 and ICH Q5C guidelines.
Applications
Primary applications include quality control of film gauge consistency, formulation optimization (e.g., impact modifier dosage in LDPE blends), shelf-life validation of barrier laminates, and incoming raw material screening for packaging converters. Beyond standard dart impact, the platform supports extended use cases via accessory fixtures: ball-drop impact assessment (using calibrated steel spheres), shoulder pad durability testing for garment packaging, and comparative evaluation of recyclable mono-material structures against traditional composites. In R&D settings, the C670M serves as a benchmark tool for correlating impact performance with rheological data (e.g., melt flow index), thermal history (DSC), or structural morphology (SEM cross-sections).
FAQ
What standards does the C670M comply with?
ASTM D1709 (Methods A and B), ISO 7765-1:1988, GB/T 9639.1–2008, and JIS K7124-1.
Is an air compressor included with the system?
No—the instrument requires an externally supplied clean, dry compressed air source at 0.6 MPa, delivered via Φ8 mm polyurethane tubing.
Can the C670M be used for non-packaging materials such as geotextiles or medical device pouches?
Yes, provided specimens meet dimensional and clamping requirements (>150 mm × 150 mm, thickness <1 mm), and failure mode remains brittle or semi-brittle per ASTM D1709 criteria.
How is measurement uncertainty addressed in calibration?
Mass calibration uses NIST-traceable weights with ±0.5% tolerance; height verification employs laser distance metering; repeatability is verified per ISO 5725-2 using certified reference films.
Does the software support multi-user access control and electronic signatures?
Yes—Labthink Professional Software offers role-based permissions, 21 CFR Part 11-compliant electronic signatures, and immutable audit trail generation when deployed on validated Windows OS platforms.
