GB/T 3903.12-2021_English: PDF (GB/T3903.12-2021)
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Footwear -- Test methods for outsoles -- Tear strength
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Footwear -- Test methods for outsoles -- Tear strength
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Standard ID | GB/T 3903.12-2021 (GB/T3903.12-2021) | Description (Translated English) | Footwear -- Test methods for outsoles -- Tear strength | Sector / Industry | National Standard (Recommended) | Classification of Chinese Standard | Y78 | Classification of International Standard | 61.060 | Word Count Estimation | 8,865 | Date of Issue | 2021-10-11 | Date of Implementation | 2022-05-01 | Older Standard (superseded by this standard) | GB/T 3903.12-2005 | Drafting Organization | Anta (China) Co., Ltd., Chengdu Product Quality Inspection and Research Institute Co., Ltd., Dezhou Xinhuarun Technology Co., Ltd., China Leather and Footwear Research Institute Co., Ltd., China Light Inspection and Certification (Wenling) Co., Ltd. | Administrative Organization | National Shoemaking Standardization Technical Committee (SAC/TC 305) | Proposing organization | China National Light Industry Council | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | Standard ID | GB/T 3903.12-2005 (GB/T3903.12-2005) | Description (Translated English) | Footwear. Test methods for outsoles. Tear strength | Sector / Industry | National Standard (Recommended) | Classification of Chinese Standard | Y78 | Classification of International Standard | 61.060 | Word Count Estimation | 7,749 | Date of Issue | 2005-09-15 | Date of Implementation | 2006-09-01 | Quoted Standard | ISO 4648; EN 10002-2; EN 12222; PREN 13400-1998 | Adopted Standard | ISO 20872-2001; IDT | Drafting Organization | China Leather and Footwear Industry Research Institute | Administrative Organization | National shoe Standardization Center | Regulation (derived from) | Announcement of Newly Approved National Standards No. 12 of 2005 (total 86) | Proposing organization | China Light Industry Federation | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China, China National Standardization Administration Committee | Summary | This standard specifies: Shoes outsole material was measured using a pants-shaped specimens tear strength methods. |
GB/T 3903.12-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 61.060
CCS Y 78
Replacing GB/T 3903.12-2005
Footwear - Test methods for outsoles - Tear strength
(ISO 20872:2018, MOD)
ISSUED ON: OCTOBER 11, 2021
IMPLEMENTED ON: MAY 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... 5
4 Test equipment and materials ... 6
5 Sampling and conditioning ... 7
6 Test methods ... 8
7 Expression of test results ... 8
8 Test report ... 9
References ... 11
Footwear - Test methods for outsoles - Tear strength
1 Scope
This document describes test methods for the determination of tear strength of footwear
outsoles by using trousers-shaped samples.
This document applies to footwear outsoles of all materials.
2 Normative references
The contents of the following documents constitute the indispensable clauses of this
document through normative references in the text. For dated references, only the
version corresponding to that date is applicable to this document; for undated references,
the latest version (including all amendments) is applicable to this document
GB/T 16825.1, Verification of static uniaxial testing machines - Part 1:
Tension/compression testing machines - Verification and calibration of the force-
measuring system (GB/T 16825.1-2008, ISO 7500-1:2004, IDT)
GB/T 22049, Footwear - Standard atmospheres for conditioning and testing of
footwear and components for footwear (GB/T 22049-2019, ISO 18454:2018, IDT)
GB/T 22050, Footwear - Sampling location preparation and duration of conditioning
of samples and test pieces (GB/T 22050-2008, ISO 17709:2004, IDT)
3 Terms and definitions
The following terms and definitions are applicable to this document.
3.1
trouser tear strength
Divide the median of the force required to tear the incision on the trousers-shaped
sample by the thickness of the sample.
3.2
median
The number in the middle of an ordered set of data.
Indexing serial number description:
a – cutting direction.
Figure 2 – Leather outsole trousers-shaped sample
4.2 Cutting knife
Razor blade or sharp knife, which is used for making incisions or cuts on the sample.
Make incisions of 40 mm ± 5 mm on the sample in the directions that are shown in
Figures 1 and 2; the last 1 mm (approximately) of the incision is done with a razor blade
or a sharp knife.
4.3 Tensile testing machine
4.3.1 The tensile testing machine complies with the requirements of GB/T 16825.1; the
accuracy is level 2; the moving speed of the clamps is 100 mm/min ± 10 mm/min. The
tensile testing machine is equipped with a device, of low inertia, which can
automatically record the force value.
4.3.2 The clamps of the tensile testing machine shall be able to clamp the sample when
the tensile force increases, and to apply uniform pressure to the clamping end of the
sample. The clamps shall be equipped with a positioning device, so that the sample can
be clamped symmetrically and in the same direction as the pulling force.
4.4 Thickness gauge
The thickness gauge shall have a firm base, and its presser foot shall have a constant
weight load, which can be applied with a pressure of 10 kPa ± 3 kPa (see ISO 23529).
The presser foot of the thickness gauge shall be a circular plane whose diameter is 10
mm ± 0.1 mm. The meter scale is 0.01 mm.
5 Sampling and conditioning
Take at least 3 samples according to GB/T 22050. When the sample size does not meet
the sampling requirements, both parties shall agree on whether to use the actual sample
length for testing, and record the sample length in the report. Before testing, all samples
shall be subjected to conditioning for at least 24 h according to GB/T 22049. Use the
punching die (4.1) to cut out the sample. The sample thickness should preferably be:
-- For polymeric and elastic solid core outsoles, the thickness should be 2.0 mm ±
0.2 mm;
-- For semi-foamed and foamed outsoles, the thickness should be 4.0 mm ± 0.2 mm;
-- For leather outsoles, the thickness should be the original outsoles thickness.
Measure the thickness at 3 different points and take the average.
Where:
TS – trouser tear strength, in Newtons per millimeter (N/mm);
F – median of the peak force, in Newtons (N).
The median of the peak force on the curve (see 3.2) is determined by the following
appropriate method.
Note: When applying the method described in this document, the tensile force is a time-
varying variable during the test.
Method A (a curve with less than 5 peaks):
All peaks are considered when determining the median.
If there is only one peak, the peak is the median.
Method B (a curve with 5 to 20 peaks):
The peaks within the middle 80% of the complete curve are considered when
determining the median.
d – the average thickness of the sample, in millimeters (mm).
The test result is the average of the test results of 3 samples.
8 Test report
The test report shall include the following contents:
a) Number of this document;
b) Sample thickness;
c) Detailed description of the sample, including style, article number, color and
material, etc.;
d) Test result, which is calculated according to Chapter 7;
e) Test date;
f) Any deviation from this test method;
g) Standard environmental conditions during the test;
GB/T 3903.12-2021
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 61.060
CCS Y 78
Replacing GB/T 3903.12-2005
Footwear - Test methods for outsoles - Tear strength
(ISO 20872.2018, MOD)
ISSUED ON. OCTOBER 11, 2021
IMPLEMENTED ON. MAY 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... 5
4 Test equipment and materials... 6
5 Sampling and conditioning... 7
6 Test methods... 8
7 Expression of test results... 8
8 Test report... 9
References... 11
Footwear - Test methods for outsoles - Tear strength
1 Scope
This document describes test methods for the determination of tear strength of footwear
outsoles by using trousers-shaped samples.
This document applies to footwear outsoles of all materials.
2 Normative references
The contents of the following documents constitute the indispensable clauses of this
document through normative references in the text. For dated references, only the
version corresponding to that date is applicable to this document; for undated references,
the latest version (including all amendments) is applicable to this document
GB/T 16825.1, Verification of static uniaxial testing machines - Part 1.
Tension/compression testing machines - Verification and calibration of the force-
measuring system (GB/T 16825.1-2008, ISO 7500-1.2004, IDT)
GB/T 22049, Footwear - Standard atmospheres for conditioning and testing of
footwear and components for footwear (GB/T 22049-2019, ISO 18454.2018, IDT)
GB/T 22050, Footwear - Sampling location preparation and duration of conditioning
of samples and test pieces (GB/T 22050-2008, ISO 17709.2004, IDT)
3 Terms and definitions
The following terms and definitions are applicable to this document.
3.1
trouser tear strength
Divide the median of the force required to tear the incision on the trousers-shaped
sample by the thickness of the sample.
3.2
median
The number in the middle of an ordered set of data.
Indexing serial number description.
a – cutting direction.
Figure 2 – Leather outsole trousers-shaped sample
4.2 Cutting knife
Razor blade or sharp knife, which is used for making incisions or cuts on the sample.
Make incisions of 40 mm ± 5 mm on the sample in the directions that are shown in
Figures 1 and 2; the last 1 mm (approximately) of the incision is done with a razor blade
or a sharp knife.
4.3 Tensile testing machine
4.3.1 The tensile testing machine complies with the requirements of GB/T 16825.1; the
accuracy is level 2; the moving speed of the clamps is 100 mm/min ± 10 mm/min. The
tensile testing machine is equipped with a device, of low inertia, which can
automatically record the force value.
4.3.2 The clamps of the tensile testing machine shall be able to clamp the sample when
the tensile force increases, and to apply uniform pressure to the clamping end of the
sample. The clamps shall be equipped with a positioning device, so that the sample can
be clamped symmetrically and in the same direction as the pulling force.
4.4 Thickness gauge
The thickness gauge shall have a firm base, and its presser foot shall have a constant
weight load, which can be applied with a pressure of 10 kPa ± 3 kPa (see ISO 23529).
The presser foot of the thickness gauge shall be a circular plane whose diameter is 10
mm ± 0.1 mm. The meter scale is 0.01 mm.
5 Sampling and conditioning
Take at least 3 samples according to GB/T 22050.When the sample size does not meet
the sampling requirements, both parties shall agree on whether to use the actual sample
length for testing, and record the sample length in the report. Before testing, all samples
shall be subjected to conditioning for at least 24 h according to GB/T 22049.Use the
punching die (4.1) to cut out the sample. The sample thickness should preferably be.
-- For polymeric and elastic solid core outsoles, the thickness should be 2.0 mm ±
0.2 mm;
-- For semi-foamed and foamed outsoles, the thickness should be 4.0 mm ± 0.2 mm;
-- For leather outsoles, the thickness should be the original outsoles thickness.
Measure the thickness at 3 different points and take the average.
Where.
TS – trouser tear strength, in Newtons per millimeter (N/mm);
F – median of the peak force, in Newtons (N).
The median of the peak force on the curve (see 3.2) is determined by the following
appropriate method.
Note. When applying the method described in this document, the tensile force is a time-
varying variable during the test.
Method A (a curve with less than 5 peaks).
All peaks are considered when determining the median.
If there is only one peak, the peak is the median.
Method B (a curve with 5 to 20 peaks).
The peaks within the middle 80% of the complete curve are considered when
determining the median.
d – the average thickness of the sample, in millimeters (mm).
The test result is the average of the test results of 3 samples.
8 Test report
The test report shall include the following contents.
a) Number of this document;
b) Sample thickness;
c) Detailed description of the sample, including style, article number, color and
material, etc.;
d) Test result, which is calculated according to Chapter 7;
e) Test date;
f) Any deviation from this test method;
g) Standard environmental conditions during the test;
......
GB/T 3903.12-2005
Footwear.Test methods for outsoles.Tear strength
ICS 61.060
Y78
National Standards of People's Republic of China
GB/T 3903.12-2005/ISO 20872.2001
Footwear outsole test method tear strength
(ISO 20872.2001, IDT)
Released on September 15,.2005
2006-09-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Administration issued
Foreword
This part of GB/T 3903 is equivalent to the international standard ISO 20872.2001 "Shoes --- Outsole Test Method --- Tear Strength".
This part was proposed by the China National Light Industry Council.
This part is under the jurisdiction of the National Shoe Standardization Center.
This section drafted by. China Leather and Footwear Industry Research Institute.
The main drafters of this section. Yan Huaidao, Xiao Xiaoxia.
GB/T 3903.12-2005/ISO 20872.2001
Footwear outsole test method tear strength
1 range
This part of GB/T 3903 specifies the method for determining the tear strength of a footwear outsole using a pant sample.
2 Normative references
The terms in the following documents become the provisions of this part by reference in this part of GB/T 3903. Quotations with dated
, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouragement is achieved under this section
The parties to the agreement study whether the latest versions of these documents can be used. For undated references, the latest edition applies to this
section.
ISO 4648 vulcanized or thermoplastic rubber---Test specimen size and method
EN10002-2 Metallic materials -- tensile test -- Part 2. Verification and correction of force measuring systems
EN12222 Footwear---Standard environment for the placement and inspection of footwear and footwear components
prEN13400.1998 Footwear---Sampling and positioning of footwear components
3 Terms and definitions
The following terms and definitions apply to this part of GB/T 3903.
3.1
The median required to tear the slit on the pant sample by the thickness of the sample is the tear strength of the pant sample.
3.2
If the values are arranged in the order of increasing their algebraic values, they are numbered 1 to. When the shape is odd, the median is the first
Shape +1 ( ) 2 values.
When the shape is even, the median is between the two values of the first ( ) and the second ( ) +1 values.
Mean.
4 Test equipment and materials
Apply the following equipment and materials.
4.1 punching mold
The outer dimensions of the punching mold of the pants sample are shown in Figures 1 and 2.
GB/T 3903.12-2005/ISO 20872.2001
......
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