Application
The VIT-222 Advanced Brush or Sponge Pilling Tester is designed to assess the pilling tendency and simulate the normal wear of knitted and woven fabrics used in apparel and automotive interiors. This machine evaluates surface changes like pilling and fuzzing by brushing and/or sponging fabric specimens in a circular motion. After testing, specimens are assessed under standard lighting conditions using a pilling assessment viewer, light cabinet, or by comparing them to standard fabrics or pilling photographs.
The machine comes equipped with a set of 8 standard brushes (USA-made) and offers optional kits for enhanced testing capabilities:
- GM9652P Kit: Includes 6 square sample holders and an automatic cycle controller
- FORD BN-108-03 Kit: Includes 6 square sample holders and a specialized sponge board
- FORD BN12-4 Kit: Includes an adapter board and 3 square specimen holders
Testing Method
The VIT-222 uses circular friction to simulate the pilling and fuzzing that occur through normal wear. Fabric samples are securely mounted on holders and subjected to controlled rubbing against brush bristles or sponge surfaces, replicating real-world wear conditions.
Instrument Characteristics This tester supports both woven and knitted fabrics, including those used in automotive interiors. It features two types of sample holders—square and circular—each capable of testing up to 6 samples simultaneously. The square holder has a sturdy metal base with a fixture, while the circular holder uses a sponge-covered base with an O-ring for secure sample placement. During operation, the holders rotate face-to-face, generating the friction needed to produce pilling.
Test Procedure
- Condition the test specimens to moisture equilibrium in the standard atmosphere for textile testing.
- Turn on the machine and set the desired cycle count or run-time mode.
- Position the brush board on the rotating platform with the bristles facing upward.
- Choose the appropriate sample holder for the fabric type and mount the specimens securely, ensuring the fabric surface is exposed and wrinkle-free.
- Place the holders on the vertical positioning pins so the fabric makes contact with the brush bristles.
- Start the machine and run the test for the set duration. After completion, remove the specimens and evaluate the pilling.
Testing Considerations Different fabric types require tailored testing procedures:
- Loosely structured knits: Sponge rubbing for 5 minutes.
- Tightly woven fabrics: 5 minutes of brushing followed by 5 minutes of sponge friction.
- Wool blends: Follow the two-step procedure above for accurate pilling assessment.
