GB/T 22364-2018 English PDF

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GB/T 22364-2018: Paper and board -- Determination of bending resistance
Status: Valid

GB/T 22364: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22364-2018	399	Add to Cart	4 days	Paper and board -- Determination of bending resistance	Valid
GB/T 22364-2008	359	Add to Cart	3 days	Paper and board -- Determination of resistance to bending	Obsolete

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Basic data

Standard ID: GB/T 22364-2018 (GB/T22364-2018)
Description (Translated English): Paper and board -- Determination of bending resistance
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y30
Classification of International Standard: 85.010
Word Count Estimation: 20,269
Date of Issue: 2018-12-28
Date of Implementation: 2019-07-01
Older Standard (superseded by this standard): GB/T 22364-2008
Quoted Standard: GB/T 450; GB/T 451.2; GB/T 10739
Adopted Standard: ISO 2493-1-2010, MOD; ISO 2493-2-2011, MOD; ISO 5629-2017, MOD
Regulation (derived from): National Standard Announcement No. 17 of 2018
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies three methods for determining the bending stiffness of paper and paperboard: constant speed bending method, Taber stiffness meter method and resonance method. This standard constant speed bending method is suitable for paper and paperboard with a bending stiffness of 20 mN to 10 000 mN. This standard Taber stiffness tester is mainly suitable for high-quantity paper and paperboard. The Taber stiffness tester in this standard does not include a low-range Taber stiffness tester with a 10 mm bend length. This standard's resonance method is suitable for most paper and board, and is not suitable for paper and paperboard with delamination, sharp curl, and paper with a basis weight of less than 40 g/m^(2). This standard applies to corrugated board components but not to corrugated board.

GB/T 22364-2018: Paper and board -- Determination of bending resistance

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Paper and board--Determination of bending resistance ICS 85-010 Y30 National Standards of People's Republic of China Replace GB/T 22364-2008 Determination of bending stiffness of paper and board Part 1. Constantrateofdeflection; ISO 2493-2.2011, Paperandboard- Determinationofbendingresistance-Part 2. Taber-typetester; ISO 5629.2017, Paperandboard-Determinationofbendingstiffness-Resonancemethod, MOD) Published on.2018-12-28 2019-07-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 22364-2008 "Determination of bending stiffness of paper and paperboard". Compared with GB/T 22364-2008, mainly The changes are as follows. --- Revised scope (see Chapter 1, Chapter 1 of the.2008 edition); ---Modified terms and definitions (see Chapter 3, Chapter 3 of the.2008 edition); --- Split the static bending method into constant speed bending method and Taber stiffness meter method (see Chapter 4, Chapter 5, Chapter 4 of the.2008 edition); --- Revised the content of the test report (see Chapter 7, Chapter 6 of the.2008 edition); --- Increased precision related data (see Appendix B); --- Removed Appendix B of the.2008 edition. This standard uses the redrafting method to modify the ISO 2493-1.2010 "Determination of bending stiffness of paper and board - Part 1 Bending method (Method 1. Constant-speed bending method), ISO 2493-2.2011, Determination of bending stiffness of paper and paperboard - Part 2. Taber stiffness Instrument Method (Method 2. Taber Stiffness Method), ISO 5629..2017 "Determination of Bending Stiffness of Paper and Cardboard" (Method 3. Resonance) law). Compared with ISO 2493-1.2010, ISO 2493-2.2011, ISO 5629.2017, this standard has more adjustments in structure, Appendix A A list of the numbering of this standard and ISO 2493-1.2010, ISO 2493-2.2011, ISO 5629.2017 is listed. The main technical differences and reasons for this standard compared with ISO 2493-1.2010, ISO 2493-2.2011, ISO 5629.2017 as follows. ---About the normative reference documents, this standard is compared with ISO 2493-1.2010, ISO 2493-2.2011, ISO 5629.2017 Adjustments with technical differences to adapt to China's technical conditions, the adjustment situation is concentrated in Chapter 2 "normative introduction In the file". ● Replace ISO 186 with GB/T 450 modified to international standards; ● Replace ISO 536 with GB/T 451.2 equivalent to the international standard; ● Replace ISO 187 with GB/T 10739 equivalent to the international standard. The main technical differences and their causes compared with ISO 5629.2017 are as follows. --- Modify the "general sample width from 10mm to 25mm" to "sample width is 15mm, the width of the high-quantity sample can be 25mm" to help reduce the error of the test (see 6.3.3); --- Integrate the contents of Method A and Method B in the test method (see 6.4), because the difference between the two methods is only quantitative Different methods; --- The combined result represents Method A and Method B, since the two methods are essentially the same (see 6.4.4). This standard has made the following editorial changes. --- Removed Appendix A of ISO 5629.2017; --- Align precision-related content into Appendix B (see B.3) to align with the other two methods in this standard. Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying these patents. This standard was proposed by the China Light Industry Association. This standard is under the jurisdiction of the National Paper Industry Standardization Technical Committee (SAC/TC141). This standard was drafted. Sichuan Changjiang Papermaking Machinery Co., Ltd., China Pulp and Paper Research Institute Co., Ltd., national paper quality Supervise the inspection center. The main drafters of this standard. Yin Baochun, Wen Jianyu, Li, and Cao Kaiyue. The previous versions of the standards replaced by this standard are. ---GB/T 2679.3-1981, GB/T 2679.3-1996; ---GB/T 12909-1991; ---GB/T 22364-2008. Determination of bending stiffness of paper and board

1 Scope

This standard specifies three methods for determining the bending stiffness of paper and paperboard. constant speed bending method, Taber stiffness meter method and resonance method. This standard constant speed bending method is suitable for paper and paperboard with a bending stiffness of 20mN~10000mN. This standard Taber stiffness meter The method is mainly applicable to high-quantity paper and paperboard. The Taber stiffness meter in this standard does not include low-range Taber type using 10mm bending length. Stiffness meter. This standard's resonance method is suitable for most paper and paperboard, and is not suitable for paper and paper that will be layered and have obvious curl when measured. Board, and paper with a basis weight below 40g/m2. This standard applies to corrugated board components but not to corrugated board. Note. Measurement results obtained using different test methods cannot be converted to each other.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 450 paper and paperboard samples taken and the longitudinal, lateral and frontal measurements of the samples (GB/T 450-2008, ISO 186. 2002, MOD) GB/T 451.2 Determination of the quantitative determination of paper and paperboard (GB/T 451.2-2002, eqvISO 536.1995) GB/T 10739 Standard atmospheric conditions for the processing and testing of paper, board and pulp samples (GB/T 10739-2002, eqvISO 187. 1990)

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Bending force The force required to bend a rectangular specimen that is clamped at one end under the test conditions specified in this standard. Note. The bending force definition applies to the constant speed bending method. 3.2 Bending moment Under the test conditions specified in this standard, the torque required to bend a rectangular specimen clamped at one end. Note. The bending moment definition applies to the Taber stiffness tester. 3.3 Bending stiffness bendingresistance The force or moment required for paper and paperboard to flex under the conditions of elastic deformation under the test conditions specified in this standard. 3.4 Bending angle The angle at which the collet rotates from the initial position to the bending stiffness measurement position. Note. The bending angle definition applies to the constant speed bending method and the Taber stiffness test method, and the bending angle is 15° or 7.5°. ......

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