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GB/T 12654-2018 English PDF (GBT12654-2018)

GB/T 12654-2018 English PDF (GBT12654-2018)

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GB/T 12654-2018: Writing paper

This Standard specifies the product grading and classification, requirements, test methods, inspection rules and marking, packaging, transportation and storage of writing paper. This Standard applies to forms, exercise books, record books, account books and other writing paper.
GB/T 12654-2018
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 85.060
Y 32
Replacing GB/T 12654-2008
Writing Paper
ISSUED ON: DECEMBER 28, 2018
IMPLEMENTED ON: JULY 01, 2019
Issued by: State Administration for Market Regulation;
Standardization Administration of the PEOPLE Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Product Grading and Classification ... 5
4 Requirements ... 5
5 Test Methods ... 6
6 inspection Rules ... 7
7 Marking, Packaging, Transportation and Storage ... 8
Writing Paper
1 Scope
This Standard specifies the product grading and classification, requirements, test methods, inspection rules and marking, packaging, transportation and storage of writing paper. This Standard applies to forms, exercise books, record books, account books and other writing paper.
2 Normative References
The following documents are essential to the application of this Document. For the dated documents, only the versions with the dates indicated are applicable to this Document; for the undated documents, only the latest version (including all the amendments) is applicable to this Document.
GB/T 147 Sizes of Unprocessed Paper for Printing, Writing and Drawing
GB/T 450 Paper and Board ?€? Sampling for Testing and Identification of Machine and Cross Direction, Wire Side and Felt Side
GB/T 451.1 Paper and Board - Determination of Size and Deviation
GB/T 451.2 Paper and Board - Determination of Grammage
GB/T 451.3 Paper and Board - Determination of Thickness
GB/T 456 Paper and Board - Determination of Smoothness (Bekk Method)
GB/T 457-2008 Paper and Board ?€? Determination of Folding Endurance
GB/T 460-2008 Paper - Determination of the Sizing Value
GB/T 462 Paper and Board - Determination of Moisture Content
GB/T 1541 Paper and Board - Determination of Dirt
GB/T 1543 Paper and Board - Determination of Opacity (Paper Backing) - Diffuse Reflectance Method
GB/T 2828.1 Sampling Procedures for Inspection by Attribute ?€? Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-Lot Inspection
5.2 The size and skewness of paper shall be measured according to GB/T 451.1. 5.3 The grammage and grammage deviation shall be determined according to GB/T 451.2. 5.4 The tightness shall be measured according to GB/T 451.3.
5.5 The D65 brightness is measured according to GB/T 7974.
5.6 The opacity shall be measured according to GB/T 1543.
5.7 The sizing value shall be determined according to the ink scribing method in GB/T 460- 2008.
5.8 The smoothness shall be measured according to GB/T 456.
5.9 The transverse folding endurance shall be determined by the Schober method in GB/T 457- 2008.
5.10 The dirt shall be measured according to GB/T 1541.
5.11 The printing surface strength shall be measured by A IGT printing tester (electric type) according to the method in GB/T 22365-2008, using medium-viscosity ink. 5.12 The moisture at delivery shall be measured according to GB/T 462.
5.13 The color difference shall be measured according to GB/T 7975.
5.14 Visual inspection is adopted for appearance quality.
6 inspection Rules
6.1 The quantity delivered at one time is regarded as a batch; and each batch shall not exceed 30t.
6.2 The manufacturer shall ensure that the produced writing paper meets the requirements of this Standard; and each piece of paper shall be delivered with a certificate of conformity. 6.3 The sampling plan for delivery inspection shall be carried out in accordance with the provisions of GB/T 2828.1. The sample unit of sheet paper is a piece; and the sample unit of web paper is a roll. Acceptance Quality Limit (AQL):
a) AQL=4.0 for opacity, sizing value, transverse folding endurance;
b) AQL=6.5 for grammage, grammage deviation, tightness, D65 brightness, smoothness, dirt, moisture at delivery, color difference of the same batch of paper, number of joints, and appearance quality.
The sampling plan adopts the double sampling plan for the normal inspection; and the inspection level is the special inspection level S-2. See Table 2.
6.4 Determination of acceptability: The sample size for the first inspection shall be equal to the first sample size given in the plan. If the number of disqualified products found in the first sample is less than or equal to the first acceptance number, the lot shall be considered acceptable. If the number of disqualified products found in the first sample is greater than or equal to the first rejection number, the lot shall be considered unacceptable. If the number of disqualified products found in the first sample is between the first acceptance number and the first rejection number, a second sample of the sample size given by the plan shall be inspected and accumulate the number of disqualified products found in the first and second samples. If the cumulative number of disqualified products is less than or equal to the second acceptance number, the lot is judged acceptable. If the cumulative number of disqualified products is greater than or equal to the second rejection number, the lot is judged unacceptable.
6.5 If the purchaser has any objection to the quality of the product, it shall submit a written opinion to the direct supplier within one month after the arrival of the goods; and the supplier and the purchaser shall jointly re-inspect or entrust a mutually recognized inspection department to conduct re-inspection. If the re-inspection results do not meet the requirements of this Standard, the lot will be judged unacceptable; and the supplier will be responsible for handling it. If it meets the requirements of this Standard, it will be judged acceptable for the lot, and the purchaser will be responsible for handling it.
7 Marking, Packaging, Transportation and Storage
7.1 The packaging and marking of writing paper shall be in accordance with the provisions of GB/T 10342, including product name, trademark, product standard number, specification, grammage, quantity, name and detailed address of the manufacturer, etc.; and may also be in accordance with the provisions of the contract.
7.2 During transportation, rain-proof, moisture-proof, and clean means of transport shall be used, and they shall not be mixed with other items that shall pollute paper products or flammable items.

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