General Testing
What is a General Testing?
General testing refers to the evaluating potential quality issues in textile and apparel products during actual use, ensuring effective quality control. Major test items include fiber composition, colorfastness, and mechanical performance. Additionally, to verify that products are labeled correctly, tests are conducted to assess the appropriateness of care instructions—such as recommended washing methods.
Test Items
Fiber Composition Analysis and Material Identification
| Fiber composition/Fiber identification | To determine the types and proportions of Fibers, including detailed classification (eq., rayon, flax, and wool). Specific wool identification : sheep, angora, rabbit, alpaca, llama, mohair, cashmere and camel. |
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| Leather/Fur Identification | To identify types of leather and fur, including both artificial and natural materials. Natural leather : camel, rabbit, water buffalo, snake, lizard, crocodile (by species), eel, deer, ostrich, raccoon, fox, muskrat, horse, chinchilla, weasel, kangaroo, dog and cat. Fur identification : camel, yak, cow, pig, goat, water buffalo, deer, ostrich, raccoon, mink, fox, beaver, marten, coyote, nutria, muskrat, horse, chinchilla, weasel, squirrel, kangaroo, mongoose, elk, lynx, dog and cat. |
| Average diameter of wool fiber | To measure the average fiber diameter of wool fibers. |
Down and Feather Evaluation
| Composition | To evaluate the content of down, feathers, and other components in filling materials. |
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| Bulkiness | To determine the bulkiness of down filling materials. |
| Species identification | To measure the content of duck down, goose down, and other components in filling materials. |
| Net Fill Weight | To determine the mass of filling materials used in down products (e.g., jumpers, blankets, etc.). |
| Quality of filling materials | To evaluate the quality of down filling materials, including oxygen index, turbidity, moisture content, black point content, oil content, and odor. |
| Fill Power | To measures the loft or insulation properties of down products. |
Colorfastness Evaluation
| Washing | To evaluate the degree of color change and staining after washing with standard detergent. |
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| Dry cleaning | To evaluate the degree of color change and staining after dry cleaning with a solvent. |
| Rubbing | To evaluate the degree of staining due to rubbing. |
| Light and perspiration | To evaluate the degree of color change due to the effect of artificial perspiration and light sources. |
| Light | To evaluate the degree of color change due to the effect of artificial light sources. |
| Perspiration | To evaluate the degree of color change and staining due to the effect of perspiration. |
| Water | To evaluate the degree of color change and staining due to the effect of water. |
Mechanical Performance Evaluation
| Dimensional stability to washing | To measure dimensional change rate after washing. |
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| Dimensional stability to dry cleaning | To measure dimensional change rate after dry cleaning. |
| Dimensional stability to ironing | To measure dimensional change rate after ironing. |
| Fabric density/weight |
Density : Number of yarns per unit length. Weight : Mass per unit area. |
| Tensile strength and elongation |
Tensile strength : Resistance to rupture under maximum applied load. Tensile elongation : Ratio of extended length at rupture. |
| Tear strength | To measure the force required to tear a material in the direction of applied force. |
| Bursting strength | To evaluate resistance to vertical pressure until rupture. |
| Peel strength/Bond strength |
Peel strength : Resistance to separation of bonded fabric layers. Bond strength : Resistance to delamination in coated/laminated fabrics. |
| Abrasion | To evaluate resistance to repetitive friction. |
| Pilling | To assess the degree of fuzzing or pilling caused by friction. |
| Snagging | Test to evaluate fiber protrusion or snagging due to external entanglement. |
Labeling (Care Label) Verification and Recommendation Test
| Recommendation | To evaluate recommended care instructions such as washing, dry cleaning, ironing, etc. |
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| Verification | To verify that care instructions provided by the client are suitable for labeling. |