Single‑Fiber Adjacent Fabric Testing

Single‑fiber adjacent fabric is a standard adjacent textile made of one single fiber type, mainly used for staining assessment in textile color fastness tests. Featuring uniform fiber composition and stable physical properties, it delivers reliable reference for textile testing. During production, fiber purity, fabric density and surface smoothness shall be strictly controlled to guarantee accuracy and repeatability of test results.

Single‑fiber adjacent fabrics are widely adopted in color fastness testing for apparel textiles, home textiles and technical textiles, including color fastness to water, perspiration, rubbing, washing and dry‑cleaning. Besides, they are also applied in fiber composition analysis and dimensional stability tests, serving as fundamental consumables in textile quality‑control laboratories.

Single‑fiber adjacent fabric testing mainly covers fiber‑composition verification, physical‑property measurement and chemical‑safety inspection. Testing laboratories evaluate fiber content, areal weight, thickness, fabric density, pH value and color fastness to meet technical specifications for standard adjacent fabrics. Test results act as key evidence for quality grading and service‑applicability judgment.

Test Scope

1. Cotton single‑fiber adjacent fabric

2. Wool single‑fiber adjacent fabric

3. Silk single‑fiber adjacent fabric

4. Ramie single‑fiber adjacent fabric

5. Linen single‑fiber adjacent fabric

6. Viscose single‑fiber adjacent fabric

7. Polyester single‑fiber adjacent fabric

8. Polyamide single‑fiber adjacent fabric

9. Polyacrylonitrile single‑fiber adjacent fabric

10. Acetate single‑fiber adjacent fabric

11. Triacetate single‑fiber adjacent fabric

12. Polypropylene single‑fiber adjacent fabric

13. Polyethylene single‑fiber adjacent fabric

14. Spandex single‑fiber adjacent fabric

15. Glass‑fiber single‑fiber adjacent fabric

16. Metallic‑fiber single‑fiber adjacent fabric

17. Carbon‑fiber single‑fiber adjacent fabric

18. Aramid single‑fiber adjacent fabric

19. Regenerated‑cellulose single‑fiber adjacent fabric

20. Lyocell single‑fiber adjacent fabric

21. Modal single‑fiber adjacent fabric

22. Bamboo‑fiber single‑fiber adjacent fabric

Test Items

1. Fiber Composition Analysis: Identify fiber category and mass ratio via chemical or physical methods.

2. Areal Weight Determination: Measure mass per unit area to reflect fabric thickness and density characteristics.

3. Thickness Measurement: Test fabric thickness under specified pressure and evaluate bulkiness.

4. Warp & Weft Density Test: Count yarn quantity per unit length to characterize fabric tightness.

5. Breaking Strength: Record maximum tensile load before specimen fracture.

6. Breaking Elongation: Calculate percentage elongation at break against original specimen length.

7. Tearing Strength: Evaluate resistance against tear propagation.

8. pH Value Determination: Measure pH of aqueous extract and detect residual harmful chemicals.

9. Formaldehyde Content: Quantify free and hydrolyzed formaldehyde residues.

10. Decomposable Carcinogenic Aromatic Amine Dyes: Screen hazardous amines released from banned azo dyes.

11. Heavy‑Metal Content: Detect residual lead, cadmium, chromium and other heavy‑metal elements.

12. Color Fastness to Water: Assess color stability under water‑immersion conditions.

13. Color Fastness to Perspiration: Measure color change and staining under simulated‑sweat environment.

14. Color Fastness to Rubbing: Inspect color transfer caused by friction action.

15. Color Fastness to Washing: Evaluate color retention performance after laundering.

16. Color Fastness to Dry‑cleaning: Determine color stability under dry‑cleaning conditions.

17. Color Fastness to Light: Assess fading degree under light exposure.

18. Dimensional Stability: Calculate dimensional‑change rate after washing or dry‑cleaning treatment.

19. Whiteness Measurement: Quantify whiteness which directly affects staining‑grading results.

20. Capillary Effect: Test water‑absorption and moisture‑transport capacity.

21. Surface Flatness: Evaluate surface uniformity and smoothness of adjacent fabric.

22. Fabric Structure Analysis: Confirm weaving pattern and yarn arrangement rule.

Applicable Standards

1. Chemical dissolution method: Identify fiber composition according to dissolving properties in specific chemical reagents.

2. Microscopic observation method: Distinguish fiber types by morphological features under optical microscope.

3. Combustion identification method: Preliminary classification based on flame feature, odor and ash status during burning.

4. Infrared‑spectroscopy analysis: Characterize fiber components via molecular infrared‑absorption fingerprints.

5. Gravimetric method: Calculate areal weight by weighing specimens of defined dimension with precision balance.

6. Tensile test method: Apply tensile load to specimen until fracture under standardized conditions.

7. Water‑immersion test method: Evaluate color fastness after soaking specimens in water at specified temperature for set duration.

8. Perspiration test method: Treat samples with simulated sweat solution and grade color change & staining.

9. Rubbing test method: Rub specimen surface under defined pressure and assess color transfer level.

10. Washing test method: Launder specimens in detergent solution following specified procedure for color‑fastness evaluation.

11. Light‑exposure test method: Expose samples to defined light source and evaluate fading grade.

12. pH‑value test method: Measure pH value of fabric aqueous extract.

Test Instruments

1. Electronic Analytical Balance

2. Fabric Thickness Gauge

3. Fabric Density Magnifier

4. Electronic Textile Strength Tester

5. Martindale Abrasion Tester

6. Perspiration Color Fastness Tester

7. Rubbing Color Fastness Tester

8. Washing Color Fastness Tester

9. Light Fastness Tester

10. pH Meter

11. Spectrophotometer

12. Gas Chromatograph

13. Liquid Chromatograph

14. Atomic Absorption Spectrometer

15. Infrared Spectrometer

Notes

1. Avoid surface contamination, staining and mechanical damage for single‑fiber adjacent fabrics before testing; any visible defect will invalidate color‑fastness assessment.

2. Whiteness and surface flatness shall be inspected prior to formal testing, disqualified samples cannot be used as reference materials.

3. Fiber‑composition testing shall strictly verify fiber purity; mixed‑fiber impurities will produce systematic deviation for whole‑set lab tests.

4. Specimens for physical tests shall be conditioned under standard temperature‑humidity environment to obtain repeatable data.

5. For chemical‑safety tests, prevent cross‑contamination between different‑fiber adjacent‑fabric batches during sample pretreatment.

6. Each batch of adjacent fabrics should perform batch verification before laboratory routine use to guarantee traceability of experimental results.

Summary

As critical auxiliary consumables for textile color‑fastness testing, the quality of single‑fiber adjacent fabrics directly determines accuracy and reliability of test data. Systematic testing verifies that fiber composition, physical performance and chemical safety fully satisfy standard requirements, supplying qualified reference materials for textile laboratories. Third‑party laboratories with complete testing facilities can conduct full‑item inspection and issue objective, impartial test reports. Adopting standardized testing ensures product qualification of adjacent fabrics and maintains scientific consistency of textile‑measurement data.