前言
国际标准化组织 (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. 每个对已成立技术委员会的主题感兴趣的成员机构都有权在该委员会中派代表参加. 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 (国际电工委员会) 关于电工标准化的所有问题.

用于开发本文件的程序以及用于进一步维护的程序在第 1 部分中进行了描述。 1 ISO/IEC 指令的. 尤其, 注意不同类型的 ISO 文件所需的不同批准标准. This document has been drafted in accordance with the editing rules in Part 2 ISO/IEC 指令的 (请参阅 iso.org/directives).

请注意，本文档的某些内容可能受专利权保护. ISO 不负责识别任何或所有此类专利. Details of any patent rights identified during the preparation of the document will be in the introduction and/or list of patent claims received by ISO (参见 iso.org/patents).

Any trade names used in this document are information provided for the convenience of the user and do not constitute an endorsement.

For a description of the meaning of ISO specific terms and expressions related to conformity assessment, 以及有关 ISO 遵守 WTO 技术性贸易壁垒原则的信息 (技术性贸易壁垒), 请参考以下网址: 前言 – 补充信息.

国际标准化组织 12625-3, prepared by the Technical Committee CEN/TC 172 (纸浆, 纸和纸板) of the European Committee for Standardisation (欧洲标准化委员会) in cooperation with the Technical Committee ISO/TC 6 (纸, 纸板和纸浆) and Subcommittee SC 2 (纸和纸板的测试方法和质量规范), Comply with the technical cooperation agreement between ISO and CEN (维也纳协定).

This second. Version cancels and replaces the technically revised first version (国际标准化组织 12625-3:2005).

For ISO 12625-3:2005, the following minor changes have been made:

A) 标题已更改; Add “bulk”;

乙) The accuracy data in Annex A has been adjusted according to existing equipment capabilities and calibration procedures;

C) Prepare specimens with more accurate descriptions and reformulate 7.1 和 7.4;

d) Edit and update.

国际标准化组织 12625 consists of the following parts under the general heading Tissue Paper and household paper products

— 部分 1: General guidance on articles;

— 部分 3: 厚度测定, expansion thickness, apparent bulk density and volume

— 部分 4: 拉伸强度的测定, 断裂拉伸和拉伸能量吸收;

— 部分 5: 湿拉伸强度的测定;

— 部分 6: 克重的测定;

— 部分 7: 光学特性的测定 — Measurement of luminance and chroma (室外日光) using D65/10°;

— 部分 8: 吸水时间和吸水能力; Basket soaking test method;

— 部分 9: Determination of blasting strength of the ball;

— 部分 11: Determination of wet-bulb bursting strength;

— 部分 12: Determination of tensile strength of perforated lines — calculation of perforating efficiency;

— 部分 15 光学特性的测定 — Measurement of luminance and chroma using a C/2° (indoor daylight) light source;

— 部分 16 光学特性的测定 — 不透明度 (paper backing) — diffuse reflection method

国际标准化组织 12625-3-2014 薄纸及薄纸制品 – 部分 3: 厚度测定, 膨胀厚度和表观堆积密度和体积

介绍
Thickness is an important characteristic of household paper and household paper products.

In the household paper industry, thickness-related parameters are often measured, such as the diameter of rolls for rolled products (kitchen towels) or stack height for folded products (paper towels). 然而, not only end-use household paper products, but also the basic household paper from which these products are produced are also the subject of trade between companies and countries, which means that there is a real need for consistent thickness measurements that can be applied to household paper products at any stage of their manufacture.

It is well known that the thickness of tissue paper and tissue products depends on the pressure applied to the material at the time of measurement. The household paper industry has used several different loading pressures, pressure foot diameters, and loading speeds. ISO的这一部分 12625 was developed by harmonizing the standards applicable to tissues and tissue products currently in use. It specifies a single loading pressure, foot diameter and loading speed for all thickness measurements of tissue and tissue products.

It is clearly stated that tissue paper and tissue products should be tested for impurities and dents in accordance with ISO 15755.

国际标准化组织 287 或ISO 638 should be used to determine moisture content in tissue and household paper products.

1 范围
ISO的这一部分 12625 specifies a test method for determining thickness and expansion thickness, as well as calculating the apparent bulk density and volume of tissue and household paper and tissue paper products at a pressure of 2,0 千帕.

Note that this part of ISO 12625 is intended to provide a consistent test method for determining the thickness and density of tissue paper and tissue products. 国际标准化组织 534 covers the corresponding test methods for paper and board.

2 规范性引用文件
All or part of the following documents are referred to normatively in this document and are not available for their use. 对于注明日期的参考文献, 仅引用版本适用. 对于未注明日期的参考文献, 新版本的参考 (包括任何修订) 适用.

国际标准化组织 186, 纸和纸板 — 抽样以确定平均质量

国际标准化组织 187, 纸, 纸板和纸浆 — 用于调节和测试的标准大气以及用于监测样品大气和调节的程序

国际标准化组织 12625-1, 薄纸和生活用纸产品 – 部分 1: 术语的一般指南

国际标准化组织 12625-6, 薄纸及薄纸制品 – 部分 6: 克重的测定

国际标准化组织 12625-3-2014 薄纸及薄纸制品 – 部分 3: 厚度测定, 膨胀厚度和表观堆积密度和体积

3 术语和定义
就本文件而言, the terms and definitions set forth in ISO 12625-1 和以下适用.

3.1 Thickness of single layer

The distance between the two main surfaces of a single layer of tissue paper measured under static load applied as specified in this part of ISO 12625

笔记 1: A tissue “层” is an unlaminated tissue, like tissue made directly from a toilet paper mechanism.

3.2 Sheet thickness

The distance between the two main surfaces of a single paper towel product measured under the applied static load specified in this part of ISO 12625

笔记 1: Tissue “床单” are laminated or unlaminated tissue, as present in finished paper towel products.

3.3 Expansion thickness

The thickness of a single sheet of tissue paper or tissue product, calculated from the thickness of several sheets of superimposed paper, is measured under the applied static load specified in this part of ISO 12625

3.4 Apparent packing density

The quality of tissue paper or tissue product per unit volume, calculated according to its gram weight and expanded thickness

笔记 1: Apparent packing density is expressed in grams per cubic centimeter.

3.5 大部分

Apparent specific volume

Reciprocal density

笔记 1: Volume is expressed in cubic centimeters per gram.

3.6G

The mass per unit area of tissue paper or tissue paper products as determined by the procedure in ISO 12625-6

笔记 1 Entry: The gram weight of the entry is expressed in grams per square meter (克/米 2).

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