SewGlo™ · Durability Testing
SewGlo™ Illuminated Thread
Testing Data Report
Heat resistance, abrasion, aging, wash cycle, and automotive durability testing conducted on SewGlo™ Illuminated Thread. All data should be treated as reference values. V2.1.
Test Summary
Key Results at a Glance
SewGlo™ thread maintains illumination function across all major durability test categories. Brightness reduction occurs only at extreme heat thresholds. Surface wear from abrasion does not interrupt electrical function.
Heat Resistance
Passes
Illumination maintained. 10% reduction at 180°C brief exposure; 20% at 110°C sustained.
Martindale Abrasion
8,000 cycles
Knitted fabric: visible surface wear at 8,000 cycles, normal illumination throughout.
Automotive Photo Aging
No Change
Xenon lamp aging at 350 kJ/m². No appearance change detected.
Automotive Heat Aging
No Change
100°C for 14 days. No appearance change detected.
Gakushin Abrasion
6,000 cycles
1kg load, 6,000 cycles. Coating slightly worn; normal illumination maintained.
Machine Wash Cycles
100 cycles
LT and HD both rated for 100 machine wash cycles (cold, hang dry).
Data disclaimer: All data should be treated as reference values. Unless expressly agreed in writing, these values are not guaranteed specifications. Data was obtained from tests conducted on standard samples at room temperature unless otherwise noted.
Testing
Heat Resistance Testing
SewGlo™ was tested across multiple heat exposure conditions relevant to garment manufacturing processes including molding, pressing, and sustained ambient heat environments.
Heat Resistance Test Results
| Test Type | Sample Form | Test Conditions | Result |
|---|---|---|---|
| Sustained heat | Bare yarn | 110°C, 168 hours | Slight discoloration; 20% brightness reduction |
| Molding simulation | Leather-stitched accessory | Mold temp 130°C, 315-ton pressure, 90 seconds | Minor deformation; normal light emission |
| Brief high heat | Bare yarn | 180°C, 4 minutes | No visible change; 10% brightness reduction |
Key takeaway: SewGlo™ thread maintains functional light emission across all heat exposure scenarios tested. Brightness reduction of 10 to 20% occurs only at extreme heat thresholds (110°C+ sustained or 180°C brief exposure). Brief heat exposure at molding temperatures (130°C at high pressure) produces minor deformation but no loss of illumination. Maximum processing temperature is 180°C.
Testing
Abrasion Testing
Martindale abrasion testing was conducted per GB/T 21196.2-2007 Method A at 795g load. Tests were run on both leather-stitched thread and knitted luminescent fabric configurations.
Martindale Abrasion Results (GB/T 21196.2-2007, Method A, 795g)
| Sample Form | Cycle Count | Result |
|---|---|---|
| Leather-stitched thread | 2,000 cycles | Slight surface wear; normal light emission |
| Leather-stitched thread | 3,000 cycles | Visible surface wear; normal light emission |
| Knitted luminescent fabric | 3,000 cycles | Slight surface wear; normal light emission |
| Knitted luminescent fabric | 8,000 cycles | Visible surface wear; normal light emission |
Key takeaway: Abrasion causes surface coating wear on both leather-stitched and knitted fabric configurations, but does not interrupt electrical illumination function through 8,000 Martindale cycles on knitted fabric. The phosphor and conductor assembly beneath the outer coating maintains continuity across all tested cycle counts.
Testing
Automotive Qualification Testing
SewGlo™ HD was tested against automotive interior qualification protocols covering photo aging, heat aging, abrasion, and high-temperature/high-humidity conditions. All automotive qualification criteria passed.
Automotive Qualification Results
| Test Item | Test Conditions | Result |
|---|---|---|
| Photo aging | Xenon lamp aging: 350 kJ/m² | No appearance change |
| Heat aging | 100°C, 14 days | No appearance change |
| Gakushin abrasion | 1kg load, 6,000 cycles | Coating slightly worn; lights normally |
| Taber abrasion | 750g / 1kg load, 10,000 cycles | Coating slightly worn; lights normally |
| High temp and humidity | 70°C, 95% RH, 7 days | Slightly sticky surface; meets standard |
| Breaking point | Varies by variant | 3N (LT) to 60N (HD) |
Key takeaway: All automotive qualification criteria passed. Photo and heat aging produce no visible appearance change. High-temperature and high-humidity exposure (70°C, 95% RH, 7 days) shows a surface stickiness effect that remains within acceptable limits for automotive interior use. Abrasion under both Gakushin and Taber protocols results in surface coating wear only; illumination function is maintained throughout all cycle counts.
SewGlo™ HD and XR are the preferred variants for automotive interior applications. Standard application areas include seat stitching, headliner trim accent stitching, armrests, and door panel accents. Custom OEM spool configurations and colors are available for volume automotive integration programs.
Testing
Washability Testing
Machine wash testing used repeated wash cycles with 0.5% detergent solution and 50 steel balls. LT and HD both carry a 100-cycle machine wash rating.
Wash Test Protocol
| Parameter | SewGlo™ LT | SewGlo™ HD |
|---|---|---|
| Wash cycles rated | 100 cycles | 100 cycles |
| Water temperature | Cold | Cold |
| Drying method | Hang dry | Hang dry |
| Required prep before wash | Remove all electronics; seal connector end and cut ends with waterproof adhesive | |
Wash protocol reminder: Always remove the battery pack and inverter before washing. Apply waterproof adhesive to cut thread ends and the connector attachment point before the first wash cycle. Failure to seal cut ends before washing can allow moisture intrusion that will permanently degrade the thread at that point.
Summary
Test Conclusions
SewGlo™ thread passes all tested durability categories relevant to apparel, wearables, and automotive interior integration. Illumination function is the consistent outcome across abrasion, heat, aging, and wash cycle testing.
Heat: Functional to 180°C brief / 110°C sustained
Compatible with standard garment manufacturing processes including pressing, molding simulation, and sustained ambient heat. Minor brightness reduction (10 to 20%) occurs at extreme thresholds only.
Abrasion: Maintains illumination through 8,000 Martindale cycles
Surface coating wears with extended abrasion exposure, but the conductor assembly beneath maintains electrical continuity. All abrasion test results in normal light emission through rated cycle counts.
Automotive: Full qualification pass
Photo aging, heat aging, Gakushin, Taber, and high-temp/humidity testing all pass automotive interior qualification criteria. HD and XR are specified for automotive production use.
Washability: 100 machine wash cycles rated
Both LT and HD variants carry a 100-cycle machine wash rating. Remove electronics before washing and seal cut ends with waterproof adhesive. Cold water, hang dry.
SewGlo™ Guides
Full Specifications
Technical Specification
Complete spec data for all three SewGlo™ variants.
Deep Dive
SewGlo™ White Paper
Technology, integration methodology, and commercial applications.
Machine Settings
Embroidery Guide
Machine settings, stitch spacing, and tension for embroidery.
Machine Settings
Sewing Guide
Machine setup, hand stitching, and fabric compatibility.
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