介绍
ISO标准 (国际标准化组织) 是国家标准机构的全球联盟 (ISO 成员机构). 国际标准的制定通常通过ISO技术委员会进行. 每个对已设立技术委员会的主题感兴趣的成员机构都有权派代表参加该委员会. 与 ISO 联络的国际政府和非政府组织也参与了这项工作. ISO 与国际电工委员会密切合作 (恒温恒湿试验箱) 关于电气标准化的所有问题.
用于开发本文档的程序和用于进一步维护的程序在第 1 ISO/IEC 指令. 尤其, 应注意不同类型ISO文件所需的不同批准标准. 本文件根据 ISO/IEC 指令部分的编辑规则起草 2 (参见 iso.org/directives).
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ISO标准 12625-5-2016 “薄纸及薄纸制品 – 湿拉伸强度的测定 – 第五部分”
用于合格评定相关的ISO特定术语和表达规范的含义, 以及技术贸易壁垒方面的相关ISO (贸易壁垒) 坚持世界贸易组织的原则 (世贸组织) 在信息中, please refer to the following iso.org/iso/foreword.html.
This document has been prepared by the Technical Committee CEN/TC 172 (Pulp, paper and Board) of the European Committee for Standardisation (欧洲标准委员会) in collaboration with ISO Technical Committee TC 6 (纸, 纸板和纸浆) and Sub-Committee SC 2 (Test methods and quality specifications for paper and board). Comply with the technical cooperation Agreement between ISO and CEN (维也纳协定).
第二版取消并取代了第一版 (ISO标准 12625-5:2005), 进行了技术修订，进行了以下更改:
一个) in article 7, include a more detailed description of the preparation of specimens;
b) In Article 8, the measurement procedure is specified;
C) In Article 10, the test report shall contain other information;
d) More detailed accuracy data in Annex A;
电子) This document has been edited and updated.
ISO 中所有部分的列表 12625 系列可以在 ISO 网站上找到.
ISO标准 12625-5-2016 “薄纸及薄纸制品 – 湿拉伸强度的测定 – 第五部分”
1 范围
This document specifies a test method for determining the wet tensile strength of tissue paper and tissue paper products after immersion in water using a tensile strength test equipment operating at constant elongation.
现在, there are two types of tensile strength test equipment on the market, one is placed vertically and the other is placed horizontally. This document applies to both. For vertical tensile strength test equipment, a device fixed to the grip under the tensile strength test equipment, called a finch cup, is used to achieve wetting. For horizontal tensile strength test equipment, the soaking device is placed between the fixtures.
Where impurities and impurities need to be identified, ISO标准 15755[6] is suitable for these tests in tissue and tissue products.
2 规范性引用
以下文件以文本方式引用，构成本文件的部分或全部要求. 对于过时的参考, 仅引用的版本适用. 对于未注明日期的参考资料, 新版本的参考 (包括任何修订) 适用.
ISO标准 186, 纸和纸板 – sampling to determine average quality
ISO标准 187, 纸, 纸板和纸浆 – Standard atmospheres for conditioning and testing and procedures for monitoring sample atmospheres and conditioning
ISO标准 12625-5-2016 “薄纸及薄纸制品 – 湿拉伸强度的测定 – 第五部分”
ISO标准 1924-2, 纸和纸板 – 拉伸性能的测定 – 部分 2: constant elongation method (20 毫米/分钟)
ISO标准 7500-1, 金属材料 – 静态单轴试验机的校准和验证 – 部分 1: 拉伸/压缩试验机 – Calibration and verification of force measuring systems
3 术语和定义
就本文件而言, ISO中给出的术语和定义 12625-1 和以下适用.
3.1 Wet tensile strength
In a tensile test, the maximum tensile force per unit width of a waterlogged specimen before it breaks
笔记 1: Wet tensile strength is expressed in Newtons per meter (N/m).
3.2 Wet tensile strength retention
The ratio of the tensile strength of the wet sample to the tensile strength of different samples from the same sample under dry conditions, expressed as a percentage
笔记 1: Compliant with ISO 187.
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