This standard applies to paper used for offset multi-color printing of topographic maps, maps and atlases. GB/T 2675-1981 Map paper GB/T2675-1981 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China This standard applies to paper used for offset multi-color printing of topographic maps, maps and atlases. 1 Classification GB 2675 — 1.1 Map paper is divided into two types: special number and one number. Special number is used to print topographic maps; one number is used to print maps and atlases. 1.2 Paper size: 787×1092mm, 850×1168mm, 590×940mm, 920×1180mm, 940×1180mm. The size error shall not exceed ±3mm, and the deflection shall not exceed 3mm. Paper of other specifications and sizes may be produced according to the requirements of the order contract. 2 Technical requirements 2.1 The technical indicators of map paper must comply with the provisions of the following table. 1. Quantitative, g/ m2
2.Firmness, g/cm3
3.Folding endurance, average value of reciprocating times in longitudinal and transverse directions4.Gluing degree, mm
5.Whiteness, %
6.Smoothness, s
7.Wet strength, %
8.Ash content, %
Front value
9.Stretching rate (after soaking), %
Longitudinal value
Transverse value
1 0.120g/m2 and above expansion rate, %
Horizontal immersion
11.Dust degree is measured by maximum length, pieces/m20.25~1.5mm dust
0.25~1.0mm black dust
0.5~1.5mm black dust
large F1.0mm black dust
more than 1.5mm dust
large F1.5 mm black dust
Dust larger than 2.0 mm
12. Moisture, %
Published by the State Administration of Standards
Ministry of Light Industry of the People's Republic of China
Not less than
Not less than
Not less than
Not less than
Not less than
Not less than
Not more than
Not more than
Not more than|| tt||not greater than
not greater than
not greater than
not greater than
80, 100±4
120±5
not allowed
not allowedwww.bzxz.net
8090.100±4
120±5
150±6
not allowed
not allowed
Test method
GB 451--79
GB 451--79
GB 457-79
GB 460-—79
GB 1542--79
GB 456-79
GB 465 --79
GB 463—79
GB 459—79
GB45979
GB 1541 --79
GB 452--79
Implemented on August 1, 1981
Baoding Paper Mill
GB2675-81
2.2 The fiber structure of paper should be uniform and the paper surface should be flat. 2.3 The cut edges of paper should be neat and clean.
2.4 The color of each batch of paper supplied shall not have significant differences. 2.5 The paper shall not have obvious hair loss or powder loss when printing. 2.6 The paper surface shall not have folds, wrinkles, hard blocks, glossy and matte streaks, spots, translucent spots, cracks, and holes visible to the naked eye under reflected light.
2.7 The paper with any of the following conditions shall be classified as second-class products, but no more than two of them shall be included at the same time. 2.7.1 The basis weight exceeds the prescribed value within ± 2g/m2. 2.7.2 The dust content exceeds the prescribed value within 20%. 2.7.3 The smoothness is less than the prescribed value within 20%. 2.7.4 Folding endurance: not less than 60 times for special paper and not less than 40 times for No. 1 paper. 2.7.5 The whiteness of special paper is less than 3% of the prescribed value. 2.7.6 Deformation: Transversely, the deformation of special size paper shall not exceed 2.5%, longitudinally, the deformation of 120g//m2 shall not exceed 0.5%, and transversely, the deformation of - size paper shall not exceed 3.5%.
2.8 The calendering density of special size paper shall not be less than 0.75g/cm. 3 Acceptance rules
3.1 The number of paper delivered at one time shall be considered as one batch, but shall not exceed 30 tons. 3.2 The manufacturer shall ensure that the paper produced meets the requirements of this standard, and a certificate of conformity shall be attached to each piece of paper when it is delivered. 3.3 The user has the right to check whether the quality of the batch of products meets the requirements of this standard. During the inspection, first check the external packaging, and then take samples from them for inspection. 3.4 If the inspection results do not meet the requirements of this standard, samples shall be taken from double the number of paper pieces, and the indicators that do not meet the requirements of the first sample shall be re-tested. As a result of the re-test, even if only one piece of paper does not meet the requirements, the entire batch of paper shall be classified as unqualified products. The manufacturer shall be responsible for handling it.
3.5 The sampling and handling of samples before inspection shall be carried out in accordance with the provisions of GB450-79 "Methods for the sampling of average samples of paper and paperboard and the handling of samples before inspection".
4 Packaging and marking
4.1 Each ream of paper shall be wrapped into small packages with kraft paper or paper bag paper of not less than 60g/m2, and each package of paper shall be attached with a paper selection card. 4.2 The net weight of each piece of paper shall not exceed 200kg. 4.3 The paper wrapped in small packages shall be wrapped into large packages with three layers of 80g paper bag paper according to the number of reams with a net weight not exceeding 200kg, and a piece of moisture-proof paper and yellow board paper shall be placed on the top and bottom, and the pieces shall be made with wooden plywood that meets the standards. 4.4 The lead wire used for making the pieces is 10*.
4.5 After the pieces are made, a certificate of conformity shall be affixed to each piece of paper, and the production date shall be indicated and the longitudinal direction of the paper shall be marked on the wooden plywood. 5 Transportation and Storage
5.1 Paper should be properly stored to prevent the influence of rain, snow and ground moisture. 5.2 Use a canopied and clean transportation vehicle for transportation. 5.3 Do not drop paper from a high place.
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