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SAFEGUARDS | Softlines NO. 122/17

SafeGuardS Woman posing in white shirt and black jeans with belt

The China National Standardization Technical Committees for Apparel has recently revised the national standard GB/T 2660-2008 and it is now GB/T 2660-2017 <Shirts and blouses>, which will be implemented on December 1, 2017.

National standard GB/T 2660-2008<Shirts and blouses> was implemented nearly 10 years ago in China. Since 2008, the raw materials used in the manufacturing of shirts and blouses have changed and the types of products are becoming more and more varied. With the advent of new materials and the use of new technology, some new quality problems in shirts and blouses have emerged.

Since GB/T 2660-2008 does not provide the relevant provisions for these quality problems, it is difficult to judge whether these new materials meet the current required criteria. Under such circumstances, the China National Standardization Technical Committees for Apparels revised GB/T 2660-2008. The updated edition GB/T 2660-2017 < Shirts and blouses > will be implemented on December 1, 2017.

Main Technical Changes

Compared with <GB/T 2660-2008>, the main technical changes of <GB/T 2660-2017>are as follows:

  1. Revised the applicable scope of the standard. The updated standard does not apply to infant’s ( not older than 36 months) garments or to shirts and blouses with filling materials
  2. Added and revised some normative references

  3. Revised the instruction for use

  4. Revised the list of the auxiliary material and deleted the information about filling materials

  5. Revised the requirements for skewness of warp yarn and weft yarn

  6. Deleted the information about stitching fabrics

  7. Revised the information about appearance defects

  8. Revised the sewing rules

  9. Deleted tolerances within the specification and deviation for shirts and blouses with filling materials

  10. Revised the requirements for fiber content

  11. Revised the requirements for formaldehyde content, pH value, banned azo colourants and odor

  12. Revised the requirements for dimensional change after washing or dry cleaning

  13. Revised the requirements for colourfastness;

  14. Revised the relevant requirements for seam slippage

  15. Revised the requirements for tear force

  16. Added the requirements for wrinkle grade on front fly parts

  17. Added the requirements for appearance after washing or dry cleaning

  18. Added the provisions of “Shirts and blouses for children (36 months~14 years old) shall comply with the requirements of GB 31701”

  19. Revised the measuring method for finished products

  20. Revised the measuring method for the skewness of warp yarn and weft yarn

  21. Revised the test method for dimensional change after washing and the calculating method of the test result

  22. Revised the assessment method for appearance after washing or drycleaning

  23. Revised the test method for colourfastness to washing with soap or soap and soda

  24. Revised the test method for colourfastness to light

  25. Revised the test method and sampling site for seam slippage

  26. Revised the test method for tear force

  27. Revised the test method for needle detection

  28. Added the test method for the safety performance of children’ clothing

  29. Revised the inspection and determination rules for finished products

  30. Enriched and improved the determination criterion of quality defects for finished products

  31. Deleted the annex “test method of needle detection”

  32. Deleted the annex “test method of seam slippage”

Requirements for Physical and Chemical Properties

Table 1 Requirements for Physical and Chemical Properties

Items Grade

Superior grade

First grade

Qualified grade


Fiber content/%
Shall comply with the requirement of GB/T 29862

Formaldehyde content /(mg/kg)

 

Shall comply with the Type B requirements of GB 18401.


pH value

Banned azo colourants/(mg/kg)

Odor
Dimensional change after washing
or dry cleaning a/%

Collar

≥-1.0

≥-1.5

≥-2.0

Chest girthb

≥-1.5

≥-2.0

≥-2.5

Top length

≥-2.0

≥-2.5

≥-3.0

 

 

Colorfastness/grade


Washing c

Change, Staining

≥4

≥3-4

≥3
Dry cleaning d

Change, Staining

≥4-5

≥4

≥3-4
Dry rubbing

Staining

≥4

≥3-4

≥3

Wet rubbing e

Staining

≥4

≥3-4

≥3

Light

Change

≥4

≥3

≥3

Perspiration

Change, Staining

≥4

≥3

≥3

Water

Change, Staining

≥4

≥3

≥3

Seam slippage f/cm

≤0.6

Tear force/N

≥7

 

 

Wrinkle grade before washing
or dry cleaning/grade


Collar

≥4.5

Pockets

≥4.5

Cuffs

≥4.5

Front fly

≥4.5

Side seam

≥4.0

Bottom

≥4.0

 

 

Appearance after washing or dry cleaning

 

 

Wrinkle grade after washing
or dry cleaning g/grade


Collar

>4.0

≥4.0

>3.0

Pockets

>3.5

≥3.5

>3.0

Cuffs

>4.0

≥4.0

>3.0

Front fly

>3.5

≥3.5

>3.0

Side seam

>3.5

≥3.5

>3.0

Bottom

>3.5

≥3.5

>3.0
After washing or dry cleaning and drying, no degumming and bubble of adhesive interlining parts is allowed. For other parts, no rupture, falling off, deformation, obvious distortion and severe discoloration is allowed. No stitch closure-off is allowed.
Safety requirements of children’s clothing
(36months~14 years old)
Shall comply with the requirement of GB 31701
Note: According to GB/T 4841.3, any colour which is deeper than 1/12 dyestuffs dying standard depth colour card can be defined as a dark colour, and any colour which is lighter than 1/12 dyestuffs dying standard depth colour card can be defined as a light colour.

a Dimensional change after washing or dry cleaning shall be tested based on the instruction of finished product.

b For products with weft elastic, do not test the dimensional change of chest girth after washing or dry cleaning.

c Do not test colorfastness to washing with soap or soap and soda when it is labeled as non-washable.

d Do not test colorfastness to dry cleaning when it is labeled as No dry cleaning.

e For color fastness to wet rubbing of pile fabrics, flockied fabrics and dark color fabrics, the requirements for qualified grade and first grade may be a half grade lower than this standard.

f For the test results for seam slippage, it will be judged as failed when pull-out, fabric tear or breakage of sewing threads occur.

g The requirement for wrinkle grade after washing or dry cleaning allows a half grade lower than this standard when the fiber content is all cotton, all wool, all bast fiber or cotton and bast blended fiber .

Appearance Quality and Other Requirements

For more information, please refer to the original file of GB/T 2660-2017 <Shirts and blouses> or contact us directly.

SGS Global Softlines has an extensive network of over 40 laboratories worldwide, with a strong team of committed professionals from multi-disciplinary backgrounds. Our internationally accredited state-of-the-art testing laboratories offer a comprehensive range of physical, chemical and functional testing services for components, materials and finished products. We help your company ensure quality, performance and compliance with international, industrial and regulatory standards worldwide. Discover more at www.sgs.com/softlines.

For enquiries, please contact:

Louann Spirito
Director Technical Support, Softlines
t: +1 973 461 7919

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