AATCC 6:1998 pdf download.Wrinkle Recovery of Woven Fabrics: Recovery Angle
4. Safety Precautions NOTE: These safety precautions are for information purposes only. The pre- cautions are ancillary to the testing proce- dures and are not intended to be all inclu- sive. It is the user’s responsibility to use safe and proper techniques in handling materials in this test method. Manufac- turers MUST be consulted for specific details such as material safety data sheets and other manufacturer’s recommenda- tions. All OSHA standards and rules must also be consulted and followed.
4.1 Good laboratory practices should be followed. Wear safety glasses in all laboratory areas. 5. Uses and Limitations 5.1 Two options for performing wrin- kle recovery angle testing are included in this test method. The Option 1 procedure is applicable to equipment commercially available and similar to devices used in ISO 2313: Determination of the Recov- ery from Creasing of a Horizontally Folded Specimen by Measuring the An- gle of Recovery (see 13.1).
5.3 Parameters to be controlled in the test are: relative humidity, temperature, applied pressure, time under pressure, and recovery time. This method specifies arbitrary selected values for the latter three factors, based on a compromise be- tween conditions likely to be encountered in service, and the expeditious conduct of the test. Two conditions of temperature and relative humidity are specified as be- ing representative of normal experience. For specialized purposes, it may be ad- visable to use other combinations of tem- perature and humidity. 5.4 Specimens from limp or heavy weight fabrics may twist or curl making angle readings difficult to determine (see 13.3).
7.1 Identify the face and back of the fabric sample. Avoid taking specimens from creased, wrinkled, or distorted sec- tions of the sample. 7.2 Cut 12 specimens 40 × 15 mm, six with their long dimension parallel to the warp direction of the fabric and six with their long dimension parallel to the filling direction. 7.2.1 Cut warp specimens from sample locations with different warp yarns. Cut filling specimens from sample locations with different filling yarns (see Fig. 6). Unless otherwise specified, take speci- mens no nearer the selvage or edge of the fabric than one tenth the width of the fabric.AATCC 6 pdf download.