Powered by Google-Search & Google-Books www.ChineseStandard.net Database: 169759 (May 2, 2021)
HOME   Quotation   Tax   Examples Standard-List   Contact-Us   Cart(1)
  

GB/T 3903.13-2020 (GBT 3903.13-2020)

Chinese Standard: 'GB/T 3903.13-2020'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)Related StandardStatusGoogle Book
GB/T 3903.13-2020English104 Add to Cart Days<=3 Footwear -- Test methods for outsoles -- Dimensional stability GB/T 3903.13-2020 Valid GB/T 3903.13-2020
GB/T 3903.13-2020Chinese19 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]  

   

BASIC DATA
Standard ID GB/T 3903.13-2020 (GB/T3903.13-2020)
Description (Translated English) Footwear -- Test methods for outsoles -- Dimensional stability
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Y78
Classification of International Standard 61.060
Word Count Estimation 6,621
Date of Issue 2020-10-21
Date of Implementation 2021-05-01
Older Standard (superseded by this standard) GB/T 3903.13-2005
Drafting Organization China Leather and Footwear Research Institute Co., Ltd., 361 Degrees (China) Co., Ltd., Wenzhou Yihe Shoes Material Co., Ltd., Pizhou South China Footwear Co., Ltd.
Administrative Organization National Shoemaking Standardization Technical Committee (SAC/TC 305)
Regulation (derived from) National Standard Announcement No. 22 of 2020
Proposing organization China National Light Industry Council
Issuing agency(ies) State Administration for Market Regulation, National Standardization Administration

GB/T 3903.13-2020
Footwear - Test methods for outsoles - Dimensional stability
ICS 61.060
Y78
National Standards of People's Republic of China
Replace GB/T 3903.13-2005
Dimensional stability of footwear outsole test method
(ISO 20873.2018, IDT)
2020-10-21 released
2021-05-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Preface
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 3903.13-2005 "The Dimensional Stability of Footwear Outsole Test Method", and is compatible with GB/T 3903.13-2005
In comparison, the main technical changes are as follows.
---Modified normative references, ISO standards replaced EU standards (see Chapter 2, Chapter 2 of the.2005 edition);
---Modified the definition of dimensional stability and added a note (see 3.1, 3.1 in the.2005 edition);
---Modified the test report requirements (see Chapter 8, Chapter 8 of the.2005 edition).
The translation method used in this standard is equivalent to ISO 20873.2018 "Shoe Outsole Test Method Dimensional Stability".
The Chinese documents that have a consistent correspondence with the international documents cited in this standard are as follows.
---GB/T 2941-2006 Rubber physical test method General procedures for sample preparation and adjustment (ISO 23529.2004, IDT)
---GB/T 22049-2019 Footwear and footwear parts environmental regulation and test standard environment (ISO 18454.2018,
IDT)
---GB/T 22050-2008 Footwear samples and sampling location, preparation and environmental adjustment time of samples (ISO 17709.2004,
IDT)
For ease of use, this standard has made the following editorial changes.
---Added a note to the clause (see Chapter 7), "Note. According to customer needs, it can be noted that the sample change is shrinkage or
extend".
Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents.
This standard was proposed by the China National Light Industry Council.
This standard is under the jurisdiction of the National Footwear Standardization Technical Committee (SAC/TC305).
Drafting organizations of this standard. China Leather and Footwear Research Institute Co., Ltd., Sanliuyidu (China) Co., Ltd., Wenzhou Yihe Shoes Material Co., Ltd.
Company, Pizhou South China Footwear Co., Ltd.
The main drafters of this standard. Shao Lijun, Peng Fei, Liu Xiaoqing, Guan Xiaoqin, Ma Lin.
The previous versions of the standard replaced by this standard are as follows.
---GB/T 3903.13-2005.
Dimensional stability of footwear outsole test method
1 Scope
This standard specifies the method for determining the linear change rate of the dimensions of shoe outsole materials after heating.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
ISO 17709 Footwear sample and sample sampling location, preparation and environmental adjustment time (Footwear-Samplinglocation,
preparationanddurationofconditioningofsamplesandtestpieces)
ISO 18454 Footwear-Standard Environment for Footwear and Footwear Parts Environmental Regulation and Testing (Footwear-Standard
atmospheresforconditioningandtestingoffootwearandcomponentsforfootwear)
ISO 23529 Rubber-General procedures for the preparation and adjustment of rubber physical test methods (Rubber-General proceduresforpre-
paringandconditioningtestpiecesforphysicaltestmethods)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Dimensional stability
The sample is placed in a specified environment, and the distance between two points on the sample is measured before and after heating.
Note. This rate of change is expressed as a percentage.
4 Test equipment and materials
Apply the following equipment and materials.
4.1 Steel ruler, in millimeters.
4.2 Template and scalpel or another sharp knife, cut two reference incisions with a distance of 100mm or 50mm on the specimen.
4.3 The oven can heat the sample to 70 ℃ ± 2 ℃, and can carry out constant temperature control. The temperature deviation during the heating process is within 2 ℃.
4.4 Equipment for measuring the distance between two incisions on a plane, the distance is 100mm or 50mm, and the accuracy is ±0.2mm.
You can choose any of the following devices.
a) Steel ruler, in millimeters, see 4.1, used simultaneously with a 5x magnifying glass;
b) Measuring microscope or similar graduated optical equipment.
4.5 Thickness gauge, in accordance with ISO 23529 requirements, has a stable platform, its presser foot has a fixed weight load, and can apply a pressure of 10kPa ± 3kPa.
The diameter of the circular flat presser foot of the thickness gauge is 10.0mm±0.1mm.
The scale of the thickness gauge scale is 0.01mm.
5 Sampling and environmental adjustment
The sample is sampled according to ISO 17709.All samples should be environmentally adjusted according to ISO 18454 for at least 24 hours before testing.
The full thickness of the outsole should be measured.
The number of samples is at least 3.
6 Test method
6.1 Sample
Use a scalpel or other sharp knife (4.2) and a steel ruler (4.1) to cut the sample according to the specified size, see Figure 1.
Make two parallel cuts across the width of the specimen on the outer surface of the specimen. The cut depth does not exceed 0.5 mm. For larger specimens, the cut
The distance is 100mm±5mm. For smaller specimens, the incision is 50mm±5mm apart.
6.2 Measurement before heating (L0)
Measure the distance between the two reference incisions along the center line to within ±0.2mm.
6.3 Heat aging
Place the sample horizontally (support the sample to ensure that all aspects of the sample have air circulation) in the oven (4.3) for 24h ± 0.5h,
The temperature is 70℃±2℃.
6.4 Measurement after heat treatment (L)
After the heat treatment, take the sample out of the oven and place it in standard air for 30 minutes before measuring. If the sample is crimped,
Lay the sample flat.
If the measured incision becomes wider, use the center point of the incision as the measurement point. Use a suitable measuring tool to measure along the centerline,
Confirm within ±0.2mm.
7 Test results
Calculate the rate of change between cuts after each sample is heated, expressed as a percentage.
The data with the largest absolute value among the three test values is taken as the test result.
Express the rate of change S as a percentage (%), and calculate it with formula (1).
8 Test report
The test report should include the following.
a) Test results, expressed in accordance with Chapter 7;
b) The size of the sample (including thickness);
c) The detailed description of the sample includes the article number, number, color and material, etc.;
d) Number of this standard;
e) test date;
f) Any deviation from this method;
g) Processing time of the sample;
h) Standard environmental conditions required for the test.
Related standard: GB/T 3903.7-2019    GB/T 3903.26-2020
Related PDF sample: GB/T 3903.1-2017    GB/T 3903.2-2017