Textile Testing Services
VNPOLYFIBER offers a complete range of textile quality assurance services, encompassing the testing of bulk fabric and finished products. To make sure the goods we ship to the customers are of high quality and consistency.
Fabric Tests
| Test | Purpose (Why Do It?) | Key Results / Units | Recommendation |
| Air Permeability | To assess the “breathability” of fabrics, aiding in the prediction of downproofness, ease of care, and manufacturing requirements. | Volume of air passing over a specific area per unit of time (e.g., ft3³/ft²/min or L/m2²/sec). | Bedding and garments. |
| Fabric Weight | To determine the mass of fabric per unit area and to evaluate a finished product’s feel and bulk. Also useful for acceptance testing of bulk fabric from textile mills. | Mass per unit area (e.g., oz/yd2 or g/m2). | Bedding and garments. |
| Thread Count | Quantifying the number of warp and weft yarns is crucial for verifying fabrics before they are accepted from textile mills. Also helps predict a fabric’s “softness” or “hand.” | Yarns per square inch or threads per 10 cm are reported separately for warp and weft or as a total. | All textiles. |
| Yarn Size | To measure the linear density (fineness or coarseness) of warp and weft thread. It is useful for acceptance testing bulk fabrics. | US customary (Cotton Count) or metric (Tex) format. | Bedding and garments. |
| Tensile Strength | This test measures the force required to rupture a fabric when it is pulled apart. Useful for selecting the proper fabric for specific applications and for acceptance testing. | Tensile or breaking strength value (e.g., Newtons (N) or pounds-force (lbf)). | Garments, bedding, and upholstery. |
| Pilling Resistance | The goal is to evaluate a fabric’s ability to withstand the formation of pills, also known as fuzz, as a result of rubbing. Good indicator of durability and visual appeal. | Rated on a scale of 1 (Very Severe Pilling) to 5 (No Pilling). Ratings of 4 or 5 are preferred. | Garments, bedding, and upholstery. |
| Fiber Identification | To identify the fibers and fiber blends used in a fabric (e.g., cotton, polyester). Used to determine fiber content, which is typically required for product labeling. | Percentage of the fiber(s) found (e.g., 100% COTTON or 50% COTTON, 50% POLYESTER). | All textiles. |
| Seam Strength | To measure the force required to rupture sewn seams in woven fabrics when a perpendicular force is applied, the test method must be defined. Determines the strength and durability of the seam and the fabric/seam combination. | Force measured at the moment of seam rupture, reported for both warp and weft (e.g., Newtons (N) or pounds-force (lbf)). | Garments, bedding, and upholstery. |
Downproofness and fillproofness tests
| Test | Key Evaluation Focus | Test Method Summary |
| Downproofness of Bulk Fabric | Ensures the fabric can effectively contain plumage in filled garments or bedding. | A small test pillow is filled with natural materials, sewn, and glued. It is placed in a test apparatus to simulate use. Escaped fibers and feathers are counted, and a rating is assigned (rating 5 is good, 1 is not acceptable). |
| Downproofness of Channeled Fabrics | Ensures that fabrics joined together (bonded, welded, or woven) to create channels can effectively contain plumage. | A test panel with channels is constructed, filled, sewn, and glued. The panel is tumbled in a rotating box with 24 stoppers for two 15-minute intervals. Escaped particles are counted, and a rating is given. The location of leakage is also reported. |
| Downproofness of Finished Product | Evaluates the migration or leakage of filling material (down, polyester, etc.) in entire finished products or prototypes. Evaluates both the severity and the source of leakage. | The entire product is placed in a rotating box and tested right side up for 30 minutes, then wrong side up for 30 minutes. Leakage source and amount are examined and graded on a 1 (worst) to 5 (best) scale. |
| EN Rubbing Down proofness | Ensures the fabric can effectively contain plumage. | A small test pillow is made, filled, sewn closed, and placed in a plastic bag. The pillow is clamped and rubbed against itself for a set number of rotations. Escaped particles are counted and reported for the warp and weft. |
Read more:
Natural Fill Testing Guideline
