Foreword
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
Attention is drawn to the possibility that some of the parts of this document may be the subject of patent rights. The issuing body of this standard shall not be held responsible for identifying any or all such patent rights.
This standard was proposed by the China National Light Industry Council.
This standard is under the jurisdiction of the Subcommittee on Leather Shoes of the National Technical Committee on Footwear of Standardization Administration of China (SAC/TC 305/SC 1).
Test method for leather shoes - Water vapour absorption and permeability
1 Scope
This standard specifies the test method for determining the water vapour absorption and permeability of whole leather shoes.
This standard is applicable to whole-vamp leather shoes for general use. This standard may serve as a reference for whole-vamp casual shoes, travel shoes, etc.
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 (including any amendments) applies.
GB/T 22049-2008 Footwear - Standard atmospheres for conditioning and testing of footwear and components for footwear
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
water vapour absorption
ability of a whole shoe to absorb water vapour under certain conditions and within a certain time. It is expressed by the mass of water vapour absorbed by the whole shoe within a specified time
3.2
water vapour permeability
ability of a whole shoe to permeate water vapour under certain conditions and within a certain time. It is expressed by the mass of water vapour permeating the whole shoe within a specified time
4 Principle
Simulate the process that the hygrothermal water vapour generated by the foot inside a shoe is absorbed by materials such as the upper, the insole and the inner sole and discharged to the outside of the shoe cavity. Inject water vapour with a certain humidity and pressure generated at a certain temperature into the enclosed shoe cavity, and determine the increased mass of the shoe after absorbing water vapour within a specified time to obtain the water vapour absorption of the whole shoe; determine the increased mass of desiccant after absorbing the water vapour through the upper per unit time to obtain the water vapour permeability of the whole shoe.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Test apparatus and materials
6 Specimen
7 Test procedures
8 Test result
9 Test report
