SDL Atlas M079 Pilling and Snagging Tester
| Brand | SDL Atlas |
|---|---|
| Origin | USA |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Origin Category | Imported |
| Model | M079 |
| Price Range | USD 6,800 – 13,600 |
Overview
The SDL Atlas M079 Pilling and Snagging Tester is a precision-engineered instrument designed to evaluate the propensity of woven and knitted fabrics to develop snags (pulls or loops caused by snagging on sharp objects) and surface pilling under controlled mechanical agitation. It operates on the principle of multi-directional, low-torque tumbling—mimicking real-world wear conditions where fabrics encounter repeated contact with abrasive surfaces, fasteners, or protruding elements. Unlike unidirectional abradants, the M079 employs dual rotating drums, each housing eight precisely aligned stainless-steel pins arranged radially to induce consistent, omnidirectional snagging forces. Fabric specimens are mounted in standardized beaded pillow bags—filled with calibrated steel beads (±0.45 kg per bag)—which apply uniform, reproducible tension during rotation at 20 rpm for exactly 100 revolutions. This methodology ensures high inter-laboratory reproducibility and aligns directly with the physical mechanisms underlying snag formation in end-use applications such as apparel, upholstery, and technical textiles.
Key Features
- Dual independent test drums with eight hardened stainless-steel pins per drum, engineered for long-term dimensional stability and resistance to wear-induced calibration drift
- Programmable electronic counter with preset 100-revolution cycle, traceable to NIST-traceable timing standards
- Fixed rotational speed of 20 ± 0.5 rpm, maintained via brushless DC motor and closed-loop feedback control
- Robust cast-aluminum frame with vibration-dampening feet, minimizing external interference during extended test runs
- Compliance-ready design: fully supports audit trails, operator ID logging, and test parameter locking when integrated with compliant LIMS or QA software platforms
- Ergonomic specimen loading interface with quick-release clamps and visual alignment guides for consistent bag positioning
Sample Compatibility & Compliance
The M079 accommodates standard fabric specimens cut to ASTM D5362 dimensions (100 mm × 100 mm), mounted inside proprietary beaded pillow bags (sold separately; two bags per set). Each bag contains uniformly sized, polished steel beads meeting ISO 3290 Grade 10 tolerance specifications, ensuring consistent mass distribution and kinetic energy transfer. The system is validated for use with natural fibers (cotton, wool, silk), synthetic filaments (polyester, nylon, acrylic), blends, and coated or laminated substrates. It conforms strictly to ASTM D5362–22 “Standard Test Method for Determining the Snag Resistance of Fabrics Using the Beaded Pill Box Method”, and its mechanical configuration satisfies the apparatus requirements outlined in ISO 12945-2 (Pilling resistance — Part 2: Modified Martindale method) for comparative snag evaluation. Data generated meets GLP documentation requirements and supports FDA 21 CFR Part 11–compliant electronic records when paired with validated software modules.
Software & Data Management
While the M079 operates as a standalone electromechanical tester, it integrates seamlessly with SDL Atlas’ optional Q-Lab Connect™ software suite for centralized test protocol management, automated result capture, and statistical analysis (e.g., ANOVA across lot batches). The system logs timestamped test parameters—including drum ID, revolution count, operator code, and ambient temperature/humidity if linked to environmental sensors—enabling full traceability per ISO/IEC 17025 clause 7.7. Audit trails are encrypted and immutable post-execution, supporting regulatory submissions and internal quality audits. Raw data exports to CSV or XML formats are compatible with JMP, Minitab, and laboratory ERP systems.
Applications
- Pre-production validation of snag resistance in stretch knits used in activewear and intimate apparel
- Comparative assessment of filament denier, twist level, and finishing chemistry effects on snag initiation thresholds
- Quality conformance testing for automotive interior fabrics subject to seatbelt and buckle interaction
- Development of snag-resistant technical textiles for medical scrubs and industrial workwear
- Root-cause analysis of field-reported snag failures through correlation with lab-generated snag severity grading (ASTM D5362 Annex A1 visual scale)
FAQ
Are beaded pillow bags included with the M079 unit?
No—beaded pillow bags are consumables and must be ordered separately (two bags constitute one test set). Each bag is pre-filled with ISO-grade steel beads and certified to ±1.5 g mass tolerance.
Can the M079 be used for pilling evaluation only, without snag testing?
Yes. By omitting the pin arrays and running empty drums with pillow bags, the M079 functions as a modified tumbling pilling chamber compliant with ASTM D3512 and ISO 12945-1 protocols.
What maintenance is required to ensure long-term measurement fidelity?
Monthly verification of drum rotational speed using a certified tachometer and biannual inspection of pin alignment with optical collimation tools are recommended. Pin replacement is advised after 5,000 test cycles or visible deformation.
Is the M079 suitable for nonwoven fabrics?
Yes—provided specimens meet minimum tensile strength requirements (>25 N in both MD and CD per ASTM D5034) to withstand bag tension without tearing during tumbling.
Does the instrument support custom test sequences beyond 100 revolutions?
No—the M079 is hard-coded to 100 revolutions per ASTM D5362. For variable-cycle testing, users must integrate external programmable controllers compliant with IEC 61508 SIL2.
