GB/T 43549-2023Footwear—Test methods for socks—Static compression set (English PDF)

Foreword

This document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting:

Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents:

This document is proposed by China Light Industry Federation:

This document is under the jurisdiction of the National Shoemaking Standardization Technical Committee (SAC/TC305):

This document was drafted by: Anta (China) Co:, Ltd:, Zhejiang Aokang Shoes Co:, Ltd:, Henan Bonni Bioengineering Co:, Ltd:, Dongguan Hengyu Instrument Co:, Ltd:, Zhejiang Jimmy Bear Children's Products Co:, Ltd:, Zhongqing Inspection and Certification (Wenling) Co:, Ltd:, Shandong Yundujiao Beast Technology Co:, Ltd:, Jinjiang Dongyi Shoes Co:, Ltd:, Zhongqiao Sports Co:, Ltd:, China Leather and Shoemaking Research Institute Co:, Ltd:, Zhongqing INSPECTION AND CERTIFICATION LIMITED:

The main drafters of this document: Li Su, Wang Chen, Li Ning, Liu Long, Zhao Binfeng, Xu Chen, Wang Haiyan, Dai Ziqiang, Li Haihong, Shao Lijun, Chu Xuemei, You Jianfang and Yang Yang:

Test methods for footwear insoles - static compression deformation

1 Scope

This document describes a test method for static compression deformation of insoles:

This document is applicable to various microporous foam insoles with base materials such as ethylene-vinyl acetate copolymer (EVA), polyurethane (PU) foam, etc:

Determination of state compression deformation:

2 Normative reference documents

GB/T 2703

GB/T 22049

3 Terms and definitions

The terms and definitions defined in GB/T 2703 and below apply to this document: 3:1 Compression deformation compressionset The sample deforms after being compressed by an external force: When the external force is removed, the geometric dimensions change in the direction of the force:

4 Principles

When the insole is compressed by an external force, its microporous foam base material will deform in the direction of the force: When the external force is removed, the microporous foam base material still cannot Restore to original geometric dimensions: In this method, after the insole is statically compressed under a certain pressure and a certain period of time, the insole is produced in the direction of the force:

The geometric dimensional change rate is used to evaluate its compression deformation performance:

5 Instruments and Equipment

5:1 Static compression tester, the structural diagram is shown in Figure 1, and should meet the following requirements:

— Indenter, the diameter is (25±0:5)mm, (30±0:5)mm, (40±0:5)mm optional, the chamfering radius of the edge of the indenter is (1:0± 0:25)mm:

— Manually lift the table to realize the adjustable distance between the indenter and the test platform from 0mm to 50mm:

— The test load is (10±0:1)kg, (15±0:15)kg, (20±0:20)kg, (25±0:25)kg, (30±0:30)kg optional:

— Testing platform, the table top is flat and has no elasticity:

— Static compression tester with constant temperature and humidity function: The temperature fluctuation of its constant temperature and humidity chamber is controlled at ±1°C, and the relative humidity wave Mobility is controlled at ±5%: