GB/T 22796-2021 PDF English
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GB/T 22796-2021: PDF in English (GBT 22796-2021) GB/T 22796-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 97.160
CCS W 57
Replacing GB/T 22796-2009, GB/T 22797-2009, GB/T 22843-2009, GB/T 22844-2009, GB/T 22855-2009
Bedding
ISSUED ON: OCTOBER 11, 2021
IMPLEMENTED ON: FEBRUARY 01, 2022
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 7
4 Requirements ... 8
5 Test Methods ... 12
6 Inspection Rules ... 14
7 Marking, Packaging, Transportation and Storage ... 15
Appendix A (Informative) Description of Appearance Defect and Degree ... 17
Appendix B (Normative) Sampling Method of Filler Test Sample ... 19
Bibliography ... 23
Bedding
1 Scope
This Document specifies the terms and definitions, requirements, test methods, inspection rules,
marking, packaging, transportation and storage of beddings.
This Document is applicable to beddings produced with textile fabrics as the surface and lining,
with wadding fibers as fillings or without fillings. Other products can refer to it for the
implementation.
This Document does not apply to products filled with down feathers and silk.
This Document does not apply to bedding for infants and toddlers aged 36 months and younger.
2 Normative References
The provisions in following documents become the essential provisions of this Document
through reference in this Document. For the dated documents, only the versions with the dates
indicated are applicable to this Document; for the undated documents, only the latest version
(including all the amendments) is applicable to this Document.
GB/T 250 Textiles - Tests for Color Fastness - Grey Scale for Assessing Change in Color
GB/T 2910 (all parts) Textiles – Quantitative Chemical Analysis
GB/T 3920 Textiles - Tests for Color Fastness - Color Fastness to Rubbing
GB/T 3921-2008 Textiles - Tests for Color Fastness - Color Fastness to Washing With Soap
or Soap and Soda
GB/T 3922 Textiles - Testing Method for Color Fastness to Perspiration
GB/T 3923.1 Textiles - Tensile Properties of Fabrics - Part 1: Determination of Maximum
Force and Elongation at Maximum Force Using the Strip Method
GB/T 4802.1-2008 Textiles - Determination of Fabric Propensity to Surface Fuzzing and
to Pilling - Part 1: Circular Locus Method
GB/T 4802.2 Textiles - Determination of Fabric Propensity to Surface Fuzzing and to
Pilling -Part 2: Modified Martindale Method
GB/T 5296.4 Instructions for Use of Products of Consumer Interest - Part 4: Textiles and
Apparel
GB/T 5711 Textiles - Tests for Color Fastness - Color Fastness to Dry-Cleaning Using
Perchloroethylene Solvent
GB/T 6504 Testing Method for Oil Content of Man-Made Fibers
GB/T 6529 Textiles - Standard Atmospheres for Conditioning and Testing
GB/T 6977 Test Method for Ethanol Extractives, Ash, Vegetable Matter, Total Ali-
Insoluble Impurities in Scoured Wool
GB/T 8170 Rules of Rounding off for Numerical Values & Expression and Judgement of
Limiting Values
GB/T 8427-2019 Textiles - Tests for Color Fastness - Color Fastness to Artificial Light:
Xenon Arc
GB/T 8628 Textiles - Preparation, Marking and Measuring of Fabric Specimens and
Garments in Tests for Determination of Dimensional Change
GB/T 8629-2017 Textiles - Domestic Washing and Drying Procedures for Textile Testing
GB/T 8630 Textiles - Determination of Dimensional Change in Washing and Drying
GB/T 14801 Test Method for Skewness and Bow in Woven and Knitted Fabrics
GB/T 18383 General Technical Requirement for Products with Wadding Fiber
GB 18401 National General Safety Technical Code for Textile Products
GB/T 19976 Textiles – Determination of Bursting Strength - Steel Ball Method
GB/T 19981.2 Textiles - Textiles-Professional Care, Drycleaning and Wetcleaning of
Fabrics and Garments – Part 2: Procedure for Testing Performance when Drycleaning and
Finishing Using Tetrachloroethene
GB/T 19981.3 Textiles - Professional Care, Drycleaning and Wetcleaning of Fabrics and
Garments - Part 3: Procedure for Testing Performance when Cleaning and Finishing Using
Hydrocarbon Solvent
GB/T 24121 Textile Products - Determination of The Remains of Broken Sewing Needle
GB/T 29862 Textiles - Identification of Fiber Content
GB 31701 Safety Technical Code for Infants and Children Textile Products
FZ/T 01057 (all parts) Test Method for Identification of Textile Fibers
FZ/T 60029 Test Method for Fluff Shedding of Blanket
4802.1-2008, and the evaluation is performed according to GSB 16-1523; the testing of woven
fabrics is performed according to GB/T 4802.2, with rubbing of 2000 times and load of (415±2)
g; and the evaluation is performed according to GSB 16-3223.
5.1.9 The dimensional change rate for washing of the surface and lining is carried out according
to GB/T 8628, GB/T 8629-2017 and GB/T 8630. The woven fabric adopts the 4N procedure
and the drying method A; the knitted fabric adopts the 4G and the drying procedure C. The
dimensional change rate for dry cleaning shall be performed according to GB/T 19981.2 or
GB/T19981.3.
5.1.10 The color fastness to light shall be implemented according to Method-3 of GB/T 8427-
2019; and it shall be exposed to the second stage.
5.1.11 The color fastness to soaping shall be performed according to Test C (3) of GB/T 3921-
2008.
5.1.12 The color fastness to dry cleaning shall be implemented in accordance with GB/T 5711.
5.1.13 The color fastness to perspiration shall be implemented according to GB/T 3922.
5.1.14 The color fastness to rubbing shall be implemented according to GB/T 3920.
5.1.15 Metal residues shall be carried out in accordance with GB/T 24121, using a desktop or
hand-held metal detector, and the detection sensitivity (standard iron ball test card) is 1.0mm.
5.2 Filler quality, appearance quality, process quality
5.2.1 Under the natural northern light or fluorescent lamp, the illuminance of the test bench
surface shall be no lower than 600lx; and the illuminance shall be uniform. The inspector's eyes
are about 60cm away from the product; and the inspector shall inspect with his eyes and hands.
5.2.2 The deviation rate of specifications and dimensions shall be carried out as follows:
a) Tool: steel ruler.
b) Flatten the product on the test bench; level it gently by hand; so that the product is in a
natural expansion and contraction state. Use a steel ruler to measure the quarter and three
quarters of the length and width of the entire product, accurate to 1mm. Among them,
pillows, cushions only measure the size of the pillowslip. Calculate according to Formula
(2), and the calculation result is rounded-off to 1 digit after the decimal point according
to GB/T 8170.
Where:
L – deviation rate of specification and dimension;
L0 – indicated value of the specification and dimension of product, in mm;
L1 – actually-measured value of specification and dimension of product, in mm.
5.2.3 Skew shall be implemented according to GB/T 14801.
5.2.4 Color difference and dyeing defect shall be evaluated according to the grey scale for color
change specified in GB/T 250.
5.2.5 The filler uniformity shall be carried out by the inspector touching the product with both
hands by force.
6 Inspection Rules
6.1 Judgment rules
6.1.1 The intrinsic quality, appearance quality and process quality of a single product shall be
rated according to the lowest item in Tables 1, 2, 3 and 4 respectively; and the comprehensive
quality shall be rated according to the lowest among intrinsic quality, appearance quality and
process quality...
6.1.2 The judgment of intrinsic quality batch shall be carried out according to Table 5; and the
judgment of appearance quality and process quality batches shall be carried out according to
Table 6. The judgment of comprehensive quality batch shall be assessed according to the lowest
grade in the sampling inspection of intrinsic quality, appearance quality and process quality.
6.1.3 After sampling inspection, if the unqualified number is less than or equal to Ac, the
inspection batch shall be judged to be qualified; if the unqualified number is greater than or
equal to Re, the inspection batch shall be judged to be unqualified.
6.2 Sampling scheme
6.2.1 The sampling scheme for inspection of intrinsic quality can refer to Table 5.
A.2.1 Appearance defects and measurement methods
A.2.1.1 Broken defects: defects in which one or more yarns are broken or the fabric structure
is incomplete.
A.2.1.2 Cracked yarn: a section of yarn that is obviously thinner due to partial breakage of the
yarn.
A.2.1.3 Poor printing: improper registration, wrong color printing, poor penetration, uneven
color depth on both sides, color matching, deviation, etc., which affect the appearance.
A.2.1.4 Local grin-through: those with poor pilling of the velvet and bald spots causing local
grin-through of the bottom.
A.2.1.5 Poor shearing: poor shearing and cutting.
A.2.1.6 Streak: The velvet has different reflective streaks or bump marks.
A.2.1.7 Spots: oil, dirt, color and rust stains on the velvet surface that affect the appearance;
measure the maximum length, and calculate the scatter by accumulation.
A.2.2 Description of defect degree
A.2.2.1 Unobvious: refers to the relatively vague defects, which can be vaguely seen by the
inspector, not easy to be found by ordinary consumers, and do not affect the appearance and
use.
A.2.2.2 Slight: it means that the defect itself has a relatively obvious boundary, which can be
felt by touch or seen directly, which slightly affects the appearance and use.
Appendix C
(Normative)
Test Method of Compression and Resilience
C.1 Principle
Under the action of a certain time and pressure, when the thickness of the sample is compressed
and the load is removed, and it shall rebound and recover. The thickness value at different
pressures is measured to calculate the compression and resilience performance of the sample.
C.2 Equipment and tools
C.2.1 Weight A, mass 2kg; weight B, mass 4kg; balance.
C.2.2 For a 20cm×20cm square test tablet made of a material with a unit mass of 0.5g/cm2, its
working surface shall be flat and smooth, without any burrs or scars.
C.2.3 Workbench, used to place specimens, the area is no less than 20cm × 20cm; the working
surface shall be flat, smooth; and parallel and fit close to working surface of the debugging
tablet during touching period.
C.2.4 Steel ruler (ruler or indicating table, its graduation value is 1mm), which is used to
measure and indicate the vertical distance between the working surface of the test tablet and
the working surface of the workbench.
C.2.5 Stopwatch, scissors, and soft items for cleaning workbenches and debugging tablets.
C.3 Standard atmosphere for testing and conditioning
C.3.1 The standard atmosphere for conditioning and testing shall be as specified in GB/T 6529.
C.3.2 If the sample needs to be pre-conditioned, the pre-conditioning shall be carried out in an
environment with a relative humidity of 10% ~ 25% and a temperature not exceeding 50 °C.
C.3.3 Before the test, expose the sample to the standard atmosphere for testing to adjust
humidity for 24h.
C.4 Sample
C.4.1 Samples shall be taken according to the sampling method specified in this Document or
according to the method agreed by the relevant parties.
C.4.2 The samples shall be representative and shall be free of defects that affect the test results.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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