GB/T 21284-2015 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 21284-2015 | English | 85 |
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Footwear -- Test methods for whole shoe -- Thermal insulation
| Valid |
| GB/T 21284-2007 | English | 319 |
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Footwear -- Test methods for whole shoe -- Thermal insulation
| Obsolete |
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GB/T 21284-2015: Footwear -- Test methods for whole shoe -- Thermal insulation---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT21284-2015
GB
NATIONAL STANDARD OF THE
PEOPLE'S REPUBLIC OF CHINA
ICS 61.060
Y 78
GB/T 21284-2015 / ISO 20877.2011
Replacing GB/T 21284-2007
Footwear — Test methods for whole shoe —
Thermal insulation
(ISO 20877.2011, IDT)
Issued on: SEPTEMBER 11, 2015
Implemented on: APRIL 1, 2016
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
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 Apparatus and material... 5
5 Sampling and conditioning... 6
6 Test method... 6
7 Test report... 6
Annex A (Informative) Determination of insulation against heat... 8
Annex B (Informative) Assessment of footwear by the laboratory during testing of
thermal behaviour... 13
Bibliography... 15
Foreword
This Standard is drafted according to the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 21284-2007 “Footwear — Test methods for whole shoe
— Thermal insulation”. Main differences between this Standard and GB/T 21284-2007
are as follows.
— MODIFY the scope;
— MODIFY the definition of heat insulation INTO the definition of thermal
insulation;
— ADD the apparatus and test method of insulation against heat;
— ADD the informative Annex A “Determination of insulation against heat”;
— ADD the informative Annex B “Assessment of footwear by the laboratory during
testing of thermal behaviour”;
— ADD the bibliography.
This Standard uses translation method to identically adopt the international standard
ISO 20877.2011, Footwear — Test methods for whole shoe — Thermal insulation.
Corresponding Chinese documents of the international document in the normative
reference of this Standard are as follows.
— GB/T 2703-2008 Footwear — Vocabulary (ISO 19952.2005, NEQ)
— GB/T 20991-2007 Personal protective equipment — Test methods for footwear
(ISO 20344.2004, MOD)
Attention is drawn to the possibility that some of the elements of this document may
be the subject of patent rights. ISO shall not be held responsible for identifying any or
all such patent rights.
This Standard was proposed by China Light Industry Council.
This Standard shall be under the jurisdiction of National Technical Committee on
Footwear (SAC/TC 305).
Drafting organizations of this Standard. Shanghai Warrior Shoes Co., Ltd., China
Leather and Footwear Industry Research Institute, Shenzhen IMPAQ Testing
Technology Co., Ltd., Tongxiang Forworld Shoes Co., Ltd.
Main drafters of this Standard. Ma Lin, Kong Lei, Yan Xiaobing and Li Bin.
Footwear — Test methods for whole shoe —
Thermal insulation
1 Scope
This Standard specifies a method for measuring insulation of footwear against heat or
cold, in order to provide information for assessing footwear comfort.
This Standard is applicable to all types of closed footwear or boots except for footwear
used as personal protective equipment. It does not address safety aspects.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 19952 Footwear — Vocabulary
ISO 20344.2011 Personal protective equipment — Test methods for footwear
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 19952 and
the following apply.
3.1
thermal insulation
Temperature difference on the inner surface of the vamp or insocks, or both, under
specific test conditions.
4 Apparatus and material
4.1 General
The following apparatus and material shall be used.
4.2 Insulation against cold
Bibliography
[1] ISO 3290-1.2008 Rolling bearing - Balls - Dimensions and tolerances,
corresponding to GB/T 308.1-2013 “Rolling bearings - Balls - Part 1.Steel balls”
(ISO 3290-1.2008, NEQ)
[2] ISO 4649.2010 Rubber, vulcanized or thermoplastic - Determination of abrasion
resistance using a rotating cylindrical drum device, corresponding to GB/T 9867-
2008 “Rubber vulcanized or thermoplastic - Determination of abrasion resistance
using a rotating cylindrical drum device” (ISO 4649.2002, IDT)
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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