GB/T 19981.2-2014Textiles - Professional care, drycleaning and wetcleaning of fabrics and garments - Part 2: Procedure for testing performance when cleaning and finishing using tetrachloroethene (English PDF)

Foreword

GB/T 19981, Textiles - Professional Care, Drycleaning and Wetcleaning of Fabrics and Garments, is divided into 4 parts. -- Part 1. Assessment of Performance after Cleaning and Finishing; -- Part 2. Procedure for Testing Performance When Cleaning and Finishing Using Tetrachloroethene; -- Part 3. Procedure for Testing Performance When Cleaning and Finishing Using Hydrocarbon Solvent; -- Part 4. Procedure for Testing Performance When Cleaning and Finishing Using Simulated Wetcleaning. This Part is the 2nd part of GB/T 19981. This Part was drafted in accordance with the rules given in GB/T 1.1-2009. This Part replaces GB/T 19981.2-2005, Textiles - Professional Care, Drycleaning and Wetcleaning of Fabrics and Garments - Part 2. Procedure for Testing Performance When Cleaning and Finishing Using Tetrachloroethene. Compared with GB/T 19981.2- 2005, the main changes of this Part are as follows: -- it deletes the content of NOTE to Application Scope and incorporates it into Introduction; -- it modifies "regular material" to "normal material" in the text; -- it deletes the explanation of sorbitan mono-oleate in 4.2; -- it modifies "rotational frequency" to "drum speed" in 5.1; -- it modifies "polyester thread" to "white polyester thread" in 7.3; -- it modifies the minimum time of blow air, after drying, at ambient temperature, through the rotating load in 8.1.7; -- it modifies the vacuuming times for a light weight garment in 8.1.9; -- it adds the extract time for an angora item in 8.2. This Part was redrafted by modifying and adopting ISO 3175-2.2010, Textiles - Professional Care, Drycleaning and Wetcleaning of Fabrics and Garments - Part 2. Procedure for Testing Performance When Cleaning and Finishing Using Tetrachloroethene (English version). Compared with ISO 3175-2.2010, the main differences of this Part are as follows:

Drycleaning is a process for cleaning textiles in an organic solvent that dissolves oils and fats and disperses particulate dirt substantially without the swelling and creasing associated with washing or wet cleaning. Small quantities of water may be incorporated in the solvent with the aid of a surfactant for the purpose of obtaining better soil and stain removal. Some moisture-sensitive articles are preferably drycleaned without the addition of water to the solvent. A surfactant is often used to assist with soil removal and reduce the risk of greying, but it should be borne in mind that surfactants contain varying amounts of water in their formulations. Drycleaning is normally followed by an appropriate restorative finishing procedure. In most cases, this comprises some form of steam treatment and/or hot pressing. Properties of the textile or garment may change progressively on drycleaning and steaming and/or pressing and in some cases a single treatment can give little indication of the extent of dimensional and other changes that can arise after repeated treatments and which can affect the useful life of the article. Generally, most of the potential changes become apparent after 3 ~ 5 of the drycleaning and finishing treatments specified in this part of GB/T 19981. The properties which should be considered in an assessment for drycleanability together with the methods for their assessment are given in GB/T 19981.1, Textiles - Professional Care, Drycleaning and Wetcleaning of Fabrics and Garments - Part 1. Assessment of Performance after Cleaning and Finishing. Various solvents can be used for drycleaning, of which tetrachloroethene is the most common in many countries. For this reason, this method prescribes the use of tetrachloroethene. Textiles - Professional Care, Drycleaning and Wetcleaning of Fabrics and Garments - Part 2. Procedure for Testing Performance When Cleaning and Finishing Using Tetrachloroethene

1 Application Scope

GB/T 19981.2 is the second part of the Chinese standard on the professional care of fabrics and garments and it gives the test procedure for cleaning with tetrachloroethene, the solvent still used in most commercial dry cleaning. It is the procedure that the assessment in Part 1 is carried out after, and its whole purpose is to make the cleaning itself reproducible, because a garment cleaned in one shop and a garment cleaned in another have not had the same treatment unless the load ratio, the solvent condition, the mechanical action, the temperature, the drying and the finishing are all specified. The standard sets those: the apparatus and the machine type, the composition and the condition of the solvent bath, the load and the ballast, the duration and the mechanical action of the cleaning and the extraction, the drying conditions, and the finishing by steam pressing or tumbling, together with the number of cycles and the conditioning between them. The 2014 edition replaces GB/T 19981.2-2005.

This part of GB/T 19981 specifies drycleaning procedures for tetrachloroethene (perchloroethylene), using commercial drycleaning machines, for fabrics and garments. It comprises a procedure for normal materials and procedures for sensitive and very sensitive materials.

2 Normative References

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 6529, Textiles - Standard atmospheres for Conditioning and Testing ( GB/T 6529-2008, ISO 139.2005, MOD)

GB/T 19981.1, Textiles - Professional Care, Drycleaning and Wetcleaning of Fabrics and Garments - Part 1. Assessment of Performance after Cleaning and Finishing ( GB/T 19981.1-2014, ISO 3175-1.2010, MOD)

3 Terms and Definitions

For the purposes of this document, the following terms and definitions apply.

8 Procedure...