Standard No.:	GB/T 22364-2008
English Name:	Paper and Board - Determination of Resistance to Bending
Chinese Name:	纸和纸板 弯曲挺度的测定
Chinese Classification:	Y30    Papermaking in general
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	2008-08-19
Implemented on:	2009-5-1
Status:	superseded
Superseded by:	GB/T 22364-2018 Paper and board—Determination of bending resistance
Superseded on:	2019-7-1
Abolished on:	2019-07-01
Superseding:	GB/T 12909-1991 Paper and board－Determination of bending stiffness－Resonance method GB/T 2679.3-1996 Paper and board-Ｄetermination of resistance bending
Language:	English
File Format:	PDF
Word Count:	3500 words
Price(USD):	344.0
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This standard specifies two measuring methods of resistance to bending-- static bending and resonance method. Generally, the static bending method in this standard is applicable to the board with stiffness of 20mN~10000mN and is only applicable to the instruments with bending angle of 7.5 or 15. The resonance method in this standard is applicable to many kinds of paper and board but is not applicable to the laminated paper or board that will delaminate in testing, the paper or board with obvious crinkles, especially those with crinkling axis being at the long side of specimen, as well as the paper with base weight less than 40g/m2. This standard is not applicable to the corrugated board.

Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 METHOD A: Static Bending Method 5 METHOD B: Resonance Method 6 Test Report Annex A (Informative) Comparison Table of Serial Numbers of the Corresponding Chapters in this Standard and in ISO 2493: 1992, ISO 5629: 1983 Annex B (Informative) Technical Differences between this Standard and ISO 2493: 1992, ISO 5629: 1993 and their Reasons