GB/T 3903.13-2020 English PDF (GBT3903.13-2020)

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GB/T 3903.13-2020: Footwear -- Test methods for outsoles -- Dimensional stability
GB/T 3903.13-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 61.060
Y 78
GB/T 3903.13-2020 / ISO 20873:2018
Replacing GB/T 3903.13-2005
Footwear - Test methods for outsoles - Dimensional
stability
(ISO 20873:2018, IDT)
ISSUED ON: OCTOBER 21, 2020
IMPLEMENTED ON: MAY 01, 2021
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 ... 5 
4 Test equipment and materials ... 5 
5 Sampling and conditioning ... 6 
6 Test method ... 6 
7 Test result ... 8 
8 Test report ... 8 
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 3903.13-2005 "Footwear - Test methods for
outsoles - Dimensional stability"; compared with GB/T 3903.13-2005, the major
technical changes are as follows:
-- Modify normative references; use ISO standards to replace EU standards
(see Chapter 2; Chapter 2 of version 2005);
-- Modify the definition of dimensional stability and add a note (see 3.1; 3.1
of version 2005);
-- Modify the test report requirements (see Chapter 8; Chapter 8 of version
2005);
The translation method used in this Standard is equivalent to ISO 20873:2018
"Footwear - Test methods for outsoles - Dimensional stability".
The documents of our country that have a consistent correspondence with the
international documents that are referenced in this Standard are as follows:
-- GB/T 2941-2006 Rubber - General procedures for preparing and
conditioning test pieces for physical test methods (ISO 23529:2004, IDT)
-- GB/T 22049-2019 Footwear - Standard atmospheres for conditioning and
testing of footwear and components for footwear (ISO 18454:2018, IDT)
-- GB/T 22050-2008 Footwear - Sampling location preparation and duration
of conditioning of samples and test pieces (ISO 17709:2004, IDT)
For convenience of use, this Standard makes the following editorial changes:
-- Add a note to the clause (see Clause 7), "Note: According to customer
needs, it can be noted, after the test result, that the sample change is
shrinkage or extension".
Please note that some of the contents of this document may involve patents.
The issuing organization of this document is not responsible for identifying
these patents.
This Standard was proposed by China National Light Industry Council.
This Standard shall be under the jurisdiction of National Technical Committee
305 on Footwear of Standardization Administration of China (SAC/TC 305).
Footwear - Test methods for outsoles - Dimensional
stability
1 Scope
This Standard specifies the method for determining the linear change rate of
the dimensions after heating of footwear outsole materials.
2 Normative references
The following documents are indispensable for the application of this document.
For dated references, only the dated version applies to this document. For
undated references, the latest edition (including all amendments) applies to this
document.
ISO 17709 Footwear - Sampling location, preparation and duration of
conditioning of samples and test pieces
ISO 18454 Footwear - Standard atmospheres for conditioning and testing of
footwear and components for footwear
ISO 23529 Rubber - General procedures for preparing and conditioning test
pieces for physical test methods
3 Terms and definitions
The following terms and definitions are applicable to this document.
3.1
Dimensional stability
Change in the distance between two reference points on a test piece before
and after heating under specified conditions.
Note: This rate of change is expressed as a percentage.
4 Test equipment and materials
The following equipment and materials shall be used: