GB/T 22893-2008 English PDF

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GB/T 22893-2008: Paper and board -- Cut-size office paper -- Measurement of curl in a pack of sheets
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22893-2008	189	Add to Cart	3 days	Paper and board -- Cut-size office paper -- Measurement of curl in a pack of sheets	Valid

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Basic data

Standard ID: GB/T 22893-2008 (GB/T22893-2008)
Description (Translated English): Paper and board -- Cut-size office paper -- Measurement of curl in a pack of sheets
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y30
Classification of International Standard: 85-010
Word Count Estimation: 8,835
Date of Issue: 2008-12-30
Date of Implementation: 2009-09-01
Quoted Standard: GB/T 450-2002; GB/T 10739
Adopted Standard: ISO 14968-1999, MOD
Regulation (derived from): National Standard Approval Announcement 2008 No.25 (Total No.138)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies a measurement writing paper, printing paper, electrostatic photocopying paper and print curling methods. This standard applies to paper, treatment by temperature and humidity, or by copying, paper printing. This standard applies only to the vertical and horizontal dimensions of not more than 300 mm, and quantitatively to 60 g/m2 ~ 150 g/m2 paper.

GB/T 22893-2008: Paper and board -- Cut-size office paper -- Measurement of curl in a pack of sheets

---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. Cut-size office paper. Measurement of curl in a pack of sheets ICS 85-010 Y30 National Standards of People's Republic of China Paper and board basic size office paper Determination of a page curl paper bag (ISO 14968.1999, MOD) Posted 2008-12-30 2009-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This revised standard adopts ISO 14968.1999 "Paper and board Determination of the basic size of office paper into wrapping paper page curl." This standard and ISO 14968.1999 as compared to the main differences are as follows. --- International Standard ISO document standard will be referenced in the normative references converted to its corresponding national standard, GB/T 450-2002 take samples of paper and cardboard (eqv ISO 186.1994); --- International Standard ISO document standard will be referenced in the normative references converted to its corresponding national standard, GB/T 10739 Paper, board and pulp sample handling and testing of the standard atmospheric conditions (GB/T 10739-2002, eqv ISO 187.1990). The Standard Appendix A, Appendix B are informative appendices. The standard proposed by China National Light Industry Council. This standard by the National Standardization Technical Committee of the paper industry. This standard was drafted. China Pulp and Paper Research Institute, China Paper Association Professional Committee of Standardization. The main drafters of this standard. Liu Junjie. Paper and board basic size office paper Determination of a page curl paper bag

1 Scope

This standard specifies a writing paper, printing paper, electrostatic photocopying paper curl and print method for the determination. This standard applies to the base paper, the temperature and humidity treatment, or by copying, paper for printing. This standard applies only to the vertical and horizontal dimensions of no more than 300mm, and a basis weight of 60g/m2 ~ 150g/m2 paper.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 450-2002 take samples of paper and cardboard (eqv ISO 186.1994) GB/T 10739 paper, paperboard and pulp sample processing and testing standard atmospheric conditions (GB/T 10739-2002, eqv ISO 187. 1990)

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 With respect to the deviation from the flat plane of the paper, the main indicators used to measure the curl has three. curl, curling axial, concave curl. 3.2 The amount of deviation of the paper plane. Note 1. The reciprocal of the radius of curvature expressed in meters reciprocal (m-1). Note 2. The radius of curvature of the curl of the sample is the distance between the center of its arc. Smooth paper curl (R-1) is zero. Note 3. The curling properties of the paper and paperboard change over time, all of the curl is temporary. 3.3 Direction of the paper and cardboard roll crankshaft, divided into the following three types. --- Volume perpendicular to the longitudinal crankshaft; --- Roll parallel to the longitudinal crankshaft; --- Volume crankshaft and neither parallel nor perpendicular to the longitudinal direction. Note. The above three cases, respectively, see Figure A. 1 to A. 3. 3.4 Paper and cardboard curl biased surface. Note. See Appendix A. ......

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