GB/T 22890.1-2024 PDF EnglishUS$185.00 · In stock · Download in 9 seconds
GB/T 22890.1-2024: Leather - Determination of water resistance of flexible leather - Part 1: Repeated linear compression(penetrometer) Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 22890.1: Historical versions
Similar standardsGB/T 22890.1-2024: Leather - Determination of water resistance of flexible leather - Part 1: Repeated linear compression(penetrometer)---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/GBT22890.1-2024 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 59.140.30 CCS Y 46 Replacing GB/T 22890-2008 Leather - Determination of Water Resistance of Flexible Leather - Part 1.Repeated Linear Compression (penetrometer) (ISO 5403-1.2011, MOD) Issued on: MARCH 15, 2024 Implemented on: OCTOBER 1, 2024 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 Introduction... 6 1 Scope... 7 2 Normative References... 7 3 Terms and Definitions... 7 4 Principle... 7 5 Equipment, Reagents and Materials... 8 6 Sampling and Preparation of Specimens... 9 7 Test Steps... 10 8 Calculation and Expression of Results... 12 9 Test Report... 13 Bibliography... 14ForewordThis document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives for Standardization - Part 1.Rules for the Structure and Drafting of Standardizing Documents. This is Part 1 of GB/T 22890 Leather - Determination of Water Resistance of Flexible Leather. GB/T 22890 has issued the following parts. ---Part 1.Repeated linear compression (penetrometer); ---Part 2.Repeated angular compression (Maeser). This document serves as a replacement for GB/T 22890-2008 Leather - Physical and Mechanical Tests - Determination of Water Resistance of Flexible Leather. In comparison with GB/T 22890-2008, apart from structural adjustments and editorial modifications, the main technical changes are as follows. ---The principle is refined (see Chapter 4; Chapter 3 of Version 2008); ---“circuit system (optional component)” is added to the test machine (see 5.1); ---The provisions for sampling at non-standard locations are added (see 6.1); ---The provisions for sampling when the direction of the ridge line cannot be identified are added (see 6.2); ---The air conditioning time of specimen is modified, and the description of the test conditions is added (see 6.3; 5.3 of Version 2008); ---The provisions for the value-taking method and accuracy of water absorption and water permeability test results are added (see 8.2 and 8.3). This document modifies and adopts ISO 5403-1.2011 Leather - Determination of Water Resistance of Flexible Leather - Part 1.Repeated Linear Compression (penetrometer). In comparison with ISO 5403-1.2011, this document makes the following structural adjustments. ---“3 Terms and Definitions” is added, and the subsequent chapter numbers are postponed in sequence; ---The second paragraph of 5.1 is modified into “6.2 Preparation of Specimens”; ---5.3 ~ 5.5 are merged into “6.3 Conditioning and Weighing of Specimens”. The technical differences between this document and ISO 5403-1.2011, and the causes for these differences are as follows. Leather - Determination of Water Resistance of Flexible Leather - Part 1.Repeated Linear Compression (penetrometer)1 ScopeThis document describes a test method for the determination of the dynamic waterproof performance of leather through repeated linear compression. This document is applicable to the determination of the waterproof performance of various types of soft leather (especially soft leather for shoes).2 Normative ReferencesThe contents of the following documents constitute indispensable clauses of this document through the normative references in the text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 6682 Water for Analytical Laboratory Use - Specification and Test Methods (GB/T 6682- 2008, ISO 3696.1987, MOD) GB/T 39364 Leather - Chemical, Physical, Mechanical and Fastness Tests - Sampling Location (GB/T 39364-2020, ISO 2418.2017, MOD) QB/T 2707 Leather - Physical and Mechanical Tests - Sample Preparation and Conditioning (QB/T 2707-2018, ISO 2419.2012, MOD)3 Terms and DefinitionsThis document does not have terms or definitions that need to be defined.4 PrincipleForm the specimen into a groove shape and partially immerse it in water, then bend it, and measure the time required for water to permeate the leather specimen. This test can also determine the water absorption rate of the specimen (by mass fraction) and the water permeability of the specimen (by mass). NOTE. this method adopts compression bend, while GB/T 22890.2 uses folding bend. Since the two test methods belong to different bending types, there is no comparability between the ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 22890.1-2024 be delivered?Answer: The full copy PDF of English version of GB/T 22890.1-2024 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 22890.1-2024_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 22890.1-2024_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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