GB/T 26391-2022Toilet seat paper (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

This document replaces GB/T 26391-2011 "Toilet Liner". Compared with GB/T 26391-2011, except for structural adjustments and editorial changes Besides, the main technical changes are as follows.

a) Changed the scope of application of the document (see Chapter 1, Chapter 1 of the 2011 edition);

b) Changed the product classification (see Chapter 4, Chapter 3 of the 2011 edition);

c) Added raw material requirements (see 5.1);

d) Added quantitative deviation requirements (see 5.2.1);

e) Added the technical requirements for laminating toilet paper and disposable toilet cover products (see Chapter 5);

f) Changed the requirements for quantitative, tensile index, and tear index (see 5.2.1, 4.4 of the 2011 edition), and revised the internal content deviation to net content, and modified the corresponding test method (see 5.5, 6.14, 4.4, 5.7 of the 2011 edition);

g) Changed the brightness (whiteness) to D65 brightness, and changed the index value (see 5.2.1, 4.4 of the 2011 edition);

h) Changed the dispersibility index from non-assessment index to assessment index (see 5.2.1, 4.4 of the 2011 edition), and changed the corresponding test test method (see Appendix A, Appendix B of the 2011 edition);

i) Added the requirements for migratory fluorescent substances, heavy metal content, size deviation index requirements and related test methods (see Chapters 5 and 6);

j) Changed delivery inspection to factory inspection, and clarified the inspection items of factory inspection and type inspection (see Chapter 7, 2011 edition Chapter 6);

k) Changed the requirements for sales signs and packaging (see 8.1, 7.1 of the 2011 edition).

1 Scope

This document specifies the product classification and technical requirements for toilet paper, describes the test method for the technical requirements of toilet paper, and establishes The inspection rules for toilet paper sheets give information on marking, packaging, transportation and storage.

This document applies to disposable toilet seat paper made of single-layer tissue paper (or coated paper) by die-cutting and folding, and also applies to disposable toilet seat paper. Bucket sleeve.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 451.2 Determination of Quantity of Paper and Board

GB/T 455 Determination of tear strength of paper and board

GB/T 462 Determination of Moisture in Analysis Samples of Paper, Cardboard and Pulp

Determination of GB/T 7974 paper, paperboard and pulp blue light diffuse reflection factor D65 brightness (diffuse/vertical method, outdoor sunlight conditions)

GB/T 10739 Standard atmospheric conditions for handling and testing of paper, paperboard and pulp samples

GB/T 12914 Determination of Tensile Strength of Paper and Paperboard Constant Speed Tensile Method (20mm/min)

GB/T 24991 Determination of lead content in paper, cardboard and pulp by graphite furnace atomic absorption method

GB/T 24992 Determination of Arsenic Content in Paper, Cardboard and Pulp

GB/T 27741-2018 Determination of Movable Optical Brightening Agents for Paper and Paperboard

GB 31604.49-2016 National Food Safety Standard Food Contact Materials and Products Determination of Arsenic, Cadmium, Chromium, Lead and Arsenic, Cadmium, Determination of Chromium, Nickel, Lead, Antimony, Zinc Migration

GB/T 36420 Safety Evaluation Management System of Chemicals and Raw Materials for Household Paper and Paper Products

GB/T 40358 Specification for the use of recycled fibers for toilet paper and paper towels

JJF 1070-2005 Rules for measurement and inspection of net content of quantitatively packaged commodities

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document.

4 Product categories

4.1 Toilet paper is divided into virgin pulp (fiber) toilet paper and recycled pulp (fiber) toilet paper according to fiber raw materials.

4.2 The toilet paper is divided into coated toilet paper and non-coated toilet paper according to whether the base paper is coated or not.

5 Technical requirements