AATCC 66:2017 pdf download.Wrinkle Recovery of Woven Fabrics: Recovery Angle
4. Safety Precautions
NOTE: These safety precautions are for information purposes only. The precautions arc ancillary to the testing procedures and are not intended to be all inclusive. It is the user’s responsibility to use safe and proper tcchniqucs in handling materials in this test method. Manufacturers MUST be consulted for specific details such as material safety data sheets and other manufacturer’s recommendations. All OS[IA 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 wrinkle recovery angle testing are included in this test method. The Option I procedure is applicable to equipment commercially available and similar to devices used in ISO 2313: Determination of the Recovery from Creasing of a Horizontally Folded Specimen by Measuring the An-gte of Recovery (see 13.1). The Option 2 procedure is for those laboratories that still have the older recovery devices which are no longer available from their original source.
5.2 This method has been used as a research tool and for production quality control; however, it is not recommended to be used for acceptance testing (see 13.2).
5.3 Parameters to be controlled in the test are: relative humidity, temperature, app! led pressure, time under pressure, and recovery time. This method specifies arbitrary selected values for the latter three factors, based on a compromise between conditions likely to be encountered in service, and the expeditious conduct of the test. Two conditions of temperature and relative humidity are specified as being representative of normal experience. For specialized purposes, it may be advisable to use other combinations of temperature and humidity.
5.4 Specimens from limp or heavy weight fabrics may twist or curl making angle readings difficult to determine (see 13.3).
7.2.1 Cut warp specimens from sample locations with different warp yarns. Cut filling specimens from sample locations with different flling 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 66 pdf download.