Detail of GB/T 19981.2-2005

Introduction of GB/T 19981.2-2005

1 Scope This Part of GB/T 19981 specifies drycleaning procedures for tetrachloroethene (perchloroethylene), using commercial dry-cleaning machines, for fabrics and garments. It comprises a procedure for normal materials and procedures for sensitive and very sensitive materials. Notes: 1 Various solvents can be used for drycleaning, of which tetrachloroethene is the most common in many countries. For this reason, the present method prescribes the use of tetrachloroethene. 2 When using commercial drycleaning equipment, national regulations and normal safety precautions should be observed. 2 Normative References The following normative documents contain provisions which, through reference in this Part of GB/19981 constitute provisions of this Part. For dated reference, subsequent amendments (excluding amending errors) to, or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest editions of these documents are applicable. For undated references, the latest edition of the normative document referred to applies. GB 6529 Textiles - Standard Atmospheres for Conditioning and Testing GB/T 19981.1-2005 Textiles - Professional Care, Drycleaning and Wetcleaning of Fabrics and Garments - Part 1: Assessment of Performance after Cleaning and Finishing (ISO 3175-1: 1998, MOD) 3 Terms and Definitions For the purposes of this Part of GB/T 19981, the following terms and definitions apply. 3.1 Materials Fabrics, garments or composites 3.2 Composite test specimen Test specimen consisting of all component parts used in the finished item, and combined in a representative assembly 3.3 Normal materials Materials that are able to withstand the normal drycleaning process as specified in this Part of GB/T 19981 without modification 3.4 Sensitive materials Materials that may require restrictions as to mechanical action and/or drying temperatures and/or water additions Examples: Acrylics, silk and crepe. 3.5 Very sensitive materials Materials which may require greatly reduced mechanical action and/or greatly reduced drying temperatures and/or no addition of water Examples: Polyvinylchloride (PVC), modacrylic, novelty tweeds and angora. Note: After giving careful consideration to the comments on progressive change made in the Introduction, textile items which perform satisfactorily for purpose in the procedures intended for normal and sensitive materials in Table 1, may be labeled with the ○P and ○P symbols respectively, as described in GB 5296.4. There is no care label equivalent to the procedure for very sensitive materials and information on the required processing can only be given in words. 4 Reagents 4.1 Tetrachloroethylene (Cl2C=CCl2), distilled, sold for the purpose of drycleaning. 4.2 Sorbitan mono-oleate (Span 80) Note: In order to prevent foaming, it is important to use redistilled, clean solvent solution and not overfill the still.

Contents of GB/T 19981.2-2005

Foreword I Introduction 1 Scope 2 Normative References 3 Terms and Definitions 4 Reagents 5 Apparatus 6 Conditioning 7 Specimen 8 Procedure 9 Test Report Bibliography