GB/T 21284-2015Footwear -- Test methods for whole shoe -- Thermal insulation (English PDF)

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

2008 "Rubber vulcanized or thermoplastic - Determination of abrasion resistance

using a rotating cylindrical drum device" (ISO 4649.2002, IDT)

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