GB/T 24999-2018 English PDF

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GB/T 24999-2018: Paper and board -- Highest limitation of D65 brightness
Status: Valid

GB/T 24999: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 24999-2018	119	Add to Cart	3 days	Paper and board -- Highest limitation of D65 brightness	Valid
GB/T 24999-2010	279	Add to Cart	3 days	Paper and board -- Highest limitation of brightness	Obsolete

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Basic data

Standard ID: GB/T 24999-2018 (GB/T24999-2018)
Description (Translated English): Paper and board -- Highest limitation of D65 brightness
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y30
Classification of International Standard: 85.010
Word Count Estimation: 6,640
Date of Issue: 2018-12-28
Date of Implementation: 2019-07-01
Older Standard (superseded by this standard): GB/T 24999-2010
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 24999-2018: Paper and board -- Highest limitation of D65 brightness

---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--Highest limitation of D65 brightness ICS 85-010 Y30 National Standards of People's Republic of China Replace GB/T 24999-2010 Paper and cardboard D65 brightness maximum limit 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 24999-2010 "paper and board brightness (whiteness) maximum limit", compared with GB/T 24999-2010, The main changes are as follows. --- Removed the D65 brightness limit specification for inkjet paper; --- Increased the classification of products; --- Added D65 brightness limit regulations for carbonless copy paper and light printing paper; ---Adjusted the D65 brightness limit value of newsprint, writing paper, toilet paper and paper towel. 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. China Pulp and Paper Research Institute Co., Ltd., Shandong Quanlin Paper Co., Ltd., and UPM (China) Limited company, National Paper Quality Supervision and Inspection Center. The main drafters of this standard. Li, Fei, Chen Yu, Yuan Xiaoyu, Yin Lihua. The previous versions of the standards replaced by this standard are. ---GB/T 24999-2010. Paper and cardboard D65 brightness maximum limit

1 Scope

This standard specifies the maximum limit for the brightness of paper and cardboard D65. This standard applies to related paper and board.

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. Determination of GB/T 450 paper and paperboard samples and determination of longitudinal, lateral and frontal surfaces of samples GB/T 7974 Determination of the brightness of blue diffuse reflection factor D65 of paper, paperboard and pulp (diffuse/vertical method, outdoor daylight conditions)

3 requirements

The maximum D65 brightness value of paper and board should meet the requirements of Table 1. Table 1 Product maximum limit /% Uncoated printing writing paper Newsprint 53.0 Copy paper 95.0 Light printing paper 80.0 Offset printing paper 90.0 Offset book paper 85.0 Writing paper 82.0 Coated paper and cardboard 93.0 Tissue paper Tissue paper 90.0 toilet paper Primary pulp (fiber) 90.0 Recycled pulp (fiber) 83.0 Paper towels Primary pulp (fiber) 88.0 Recycled pulp (fiber) 83.0 Kitchen paper towel 90.0 Toilet paper 88.0 Technical paper Thermal paper 90.0 Carbonless copy paper 92.0 Food wrapping paper and cardboard 85.0 ......

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