This standard specifies the terms and definitions, requirements, test methods, inspection rules, marking, packaging, transportation and storage for microfiber towel products.
This standard is applicable totowel products mainlymade of polyester/polyamide composite microfiber. Other microfiber towel products may refer to this standard.
2Normative 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 250, Textiles—Tests for colour fastness―Grey scale for assessing change in colour
GB/T 2910 (all parts), Textiles—Quantitative chemical analysis
GB/T 3920, Textiles—Tests for colour fastness—Colour fastness to rubbing
GB/T 3921-2008, Texf/7es—Tests for colour fastness— olour fastness to washing with soap or soap and soda
GB/T 3922, Textiles—Tests for colour fastness—Colour fastness to perspiration
GB/T 3923.'Textiles—Tensile properties of fabrics—Part 1: Determination of maximum force and elongation at maximum force using the strip method
GB 529G.4,Instructions for use of products of consumer interest—Part 4: Textiles and apparel
GB/T 5713, Textiles—Tests for colour fastness—Colour fastness to water
GB/T G529, Textiles—Standard atmospheres for conditioning and testing
GB/T 70G9, Textiles—Texts for colour fastness—Colour fastness to bleaching: Hypochlorite
GB/T 8^70,Rules of rounding off for numerical values & expression and judgement of limiting values
GB 9994, Conventional moisture regains of textiles
GB/T 9995,Determination of moisture content and moisture regain of textile― ven-drying method
GB 18401,National general safety technical code for textile products
GB/T 19976-2005, Textiles—Determination of bursting strength—Steel ball method
GB/T 21655.1, Textiles—Evaluation of absorption and quick-drying—Part 1: Method for combination tests
GB/T 22798, Test method for fiber shedding of towel products
GB/T 22864,Towels
GB/T 298G2, Textiles—Identification of fiber content
FZ/T 01057 (all parts), Test method for identification of textile fibers
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
microfiber towel
towel products mainly made of fibers with monofilament linear density less than 0.3 dtex
4 Requirements
4.1 The quality of the microfiber towel products is classified into superior grade, first grade and qualified grade.
4.2 The internal quality of the microfiber towel products includes piece mass deviation ratio, breaking strength, bursting strength, water absorption, ratio of fiber shedding, fiber content tolerance and colour fastness to washing with soap or soap and soda, colour fastness to rubbing, colour fastness to perspiration, colour fastness to water, colour fastness to chlorine bleach. Requirements of the internal quality are specified in Table 1.
Table〔Requirements of internal quality
4.3The appearance quality of microfiber towel products includesdimensional deviation ratio, colour difference, defects and sewing quality. Requirements of theappearance quality are shown in Table 2.
Table 2 Requirements of appearance quality
No. Items Units Superior grade First grade Qualified grade
aSlightmeansitisnoteasytobe visually identifiedand the overall useoftowelproductisnotaffected. bThe defect is described in GB/T 22864.
4.4The general safety technical requirements of microfiber towel shall conform to GB 18401.
5 Test methods
5.1Test methods for internal quality
5.1.1Piece mass deviation ratio: take three pieces of towelas test specimens, measure the dry massin accordance with GB/T 9995; thencalculate the piece mass per specimen under conventional moisture regains as specified in GB/T 9994, to get the average piece mass of the three specimens. Calculate the piece mass deviation ratio by Formula (1) and round off the result to one decimal place according to GB/T 8170.
D = mv-mo x 10Q( (1)
m0
where
Disthe piece mass deviation ratio, %;
miisthe average piece mass based on conventional moisture regains, in gram (g);
moisthe nominal piece mass,in gram (g).
5.1.2Determine the breaking strengthaccording to GB/T 3923.1.
5.1.3Determine the bursting strengthaccording to GB/T 19976-2005.The diameter of ball is 38
mm±0.02mm.
5.1.4Determine the water absorption according to GB/T 21655.1.
5.1.5Determine the ratio of fibershedding according to GB/T 22798.
5.1.6Determine the fiber contentaccording to GB/T 2910 and FZ/T 01057.
5.1.7Determine the colour fastness to washing with soap or soap and soda according to the test number C inGB/T 3921-2008.
5.1.8Determine the colour fastness to rubbing according to GB/T 3920.
FZ/T 62033-2016 Microfiber towel
1Scope
This standard specifies the terms and definitions, requirements, test methods, inspection rules, marking, packaging, transportation and storage for microfiber towel products.
This standard is applicable totowel products mainlymade of polyester/polyamide composite microfiber. Other microfiber towel products may refer to this standard.
2Normative 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 250, Textiles—Tests for colour fastness―Grey scale for assessing change in colour
GB/T 2910 (all parts), Textiles—Quantitative chemical analysis
GB/T 3920, Textiles—Tests for colour fastness—Colour fastness to rubbing
GB/T 3921-2008, Texf/7es—Tests for colour fastness— olour fastness to washing with soap or soap and soda
GB/T 3922, Textiles—Tests for colour fastness—Colour fastness to perspiration
GB/T 3923.'Textiles—Tensile properties of fabrics—Part 1: Determination of maximum force and elongation at maximum force using the strip method
GB 529G.4,Instructions for use of products of consumer interest—Part 4: Textiles and apparel
GB/T 5713, Textiles—Tests for colour fastness—Colour fastness to water
GB/T G529, Textiles—Standard atmospheres for conditioning and testing
GB/T 70G9, Textiles—Texts for colour fastness—Colour fastness to bleaching: Hypochlorite
GB/T 8^70,Rules of rounding off for numerical values & expression and judgement of limiting values
GB 9994, Conventional moisture regains of textiles
GB/T 9995,Determination of moisture content and moisture regain of textile― ven-drying method
GB 18401,National general safety technical code for textile products
GB/T 19976-2005, Textiles—Determination of bursting strength—Steel ball method
GB/T 21655.1, Textiles—Evaluation of absorption and quick-drying—Part 1: Method for combination tests
GB/T 22798, Test method for fiber shedding of towel products
GB/T 22864,Towels
GB/T 298G2, Textiles—Identification of fiber content
FZ/T 01057 (all parts), Test method for identification of textile fibers
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
microfiber towel
towel products mainly made of fibers with monofilament linear density less than 0.3 dtex
4 Requirements
4.1 The quality of the microfiber towel products is classified into superior grade, first grade and qualified grade.
4.2 The internal quality of the microfiber towel products includes piece mass deviation ratio, breaking strength, bursting strength, water absorption, ratio of fiber shedding, fiber content tolerance and colour fastness to washing with soap or soap and soda, colour fastness to rubbing, colour fastness to perspiration, colour fastness to water, colour fastness to chlorine bleach. Requirements of the internal quality are specified in Table 1.
Table〔Requirements of internal quality
4.3The appearance quality of microfiber towel products includesdimensional deviation ratio, colour difference, defects and sewing quality. Requirements of theappearance quality are shown in Table 2.
Table 2 Requirements of appearance quality
No. Items Units Superior grade First grade Qualified grade
1 Dimensional deviation ratio <30cm cm
>30cm % +3.02.0 '>-2.5 >-3.0
2 Colour difference grade Coordinated products>4 一 一
3 Oil stain, colour spot Not allowed Not allowed Slight
4 Abrasion mark, snagging3 一 Not allowed Slight Slight
5 Line defectb< count / piece Not allowed 2 4
6 Stripe defectb< count / piece Not allowed 1 2
7 Skipping stitch, unstitched 一 Not allowed
8 Overlock stitch density > needles / 5cm *16 16 14
aSlightmeansitisnoteasytobe visually identifiedand the overall useoftowelproductisnotaffected. bThe defect is described in GB/T 22864.
4.4The general safety technical requirements of microfiber towel shall conform to GB 18401.
5 Test methods
5.1Test methods for internal quality
5.1.1Piece mass deviation ratio: take three pieces of towelas test specimens, measure the dry massin accordance with GB/T 9995; thencalculate the piece mass per specimen under conventional moisture regains as specified in GB/T 9994, to get the average piece mass of the three specimens. Calculate the piece mass deviation ratio by Formula (1) and round off the result to one decimal place according to GB/T 8170.
D = mv-mo x 10Q( (1)
m0
where
Disthe piece mass deviation ratio, %;
miisthe average piece mass based on conventional moisture regains, in gram (g);
moisthe nominal piece mass,in gram (g).
5.1.2Determine the breaking strengthaccording to GB/T 3923.1.
5.1.3Determine the bursting strengthaccording to GB/T 19976-2005.The diameter of ball is 38
mm±0.02mm.
5.1.4Determine the water absorption according to GB/T 21655.1.
5.1.5Determine the ratio of fibershedding according to GB/T 22798.
5.1.6Determine the fiber contentaccording to GB/T 2910 and FZ/T 01057.
5.1.7Determine the colour fastness to washing with soap or soap and soda according to the test number C inGB/T 3921-2008.
5.1.8Determine the colour fastness to rubbing according to GB/T 3920.
