This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of book cover paper. This standard is applicable to cover paper for books, magazines, and notebooks. QB/T 1454-1992 Book cover paper QB/T1454-1992 Standard download decompression password: www.bzxz.net

Light Industry Standard of the People's Republic of China
Book Cover Paper
Subject Content and Scope of Application
QB/T 1454—1992
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of book cover paper. This standard applies to cover paper for books, magazines, notebooks, etc. 2 Reference Standards
GB/T450 Taking of Paper and Paperboard Samples
GB/T 451.1
Determination of Size and Skewness of Paper and PaperboardDetermination of Basis Weight of Paper and Paperboard
GB/T 451.2
GB/T 453
GB/T 456
GB/T 457
GB/T460
GB/T 462
GB/T 1541
Determination of tensile strength of paper and paperboard (constant rate loading method)Determination of smoothness of paper and paperboard (Buick method)Determination of folding endurance of paper
Determination of sizing degree of paper and paperboard (ink streaking method)Determination of moisture content of paper and paperboard
Determination of dustiness of paper and paperboard
GB/T 2828
Counting sampling procedure and sampling table for batch inspection (applicable to inspection of continuous batches)GB/T 8940. 1
Determination of whiteness of paper and paperboard45/0 directional reflection methodPacking and marking of paper
GB/T 10342
GB/T10739Standard atmosphere for handling and testing of pulp, paper and paperboard samples3 Product classification
3.1 Book cover paper is divided into three grades: A, B and C.
3.2 Book cover paper is flat paper, and roll paper can be produced according to the contract. 3.2.1 The size of flat paper is 880mm×1230mm, 787mm×1092mm, or according to the contract. The size error shall not exceed ±3mm, and the skewness shall not exceed 3mm.
3.2.2 The roll width shall be in accordance with the order contract. The roll width error shall not exceed ±3mm. 3.3 According to the order contract, various colors and embossed book cover papers can be produced. The whiteness of colored paper is not assessed, and the smoothness of embossed paper is not assessed. 3.4 According to the order contract, other quantitative book cover papers can be produced. The strength index is less than 80g/m2 and is assessed according to the 80g/m2 standard. If it is greater than 80g/m2, it is assessed according to the 100g/m2 standard.
4 Technical requirements
4.1 The technical indicators of book cover paper must meet the requirements of Table 1. Approved by the Ministry of Light Industry of the People's Republic of China on April 14, 1992, and implemented on December 1, 1992
Gluing degree
Indicator name
Breaking length (average vertical and horizontal)
80g/m2
100, 120g/m2
Folding endurance (horizontal)
80g/m2
100.120g/m2
Smoothness (front)General pressure
Positive and negative contrast
Dust
0.2~~1.5mm2
Of which 0.5~1.0mm2 black dust
More than 1.0mm2 black dust
1. 5~2. 0mm2 dust
greater than 2.0mm2 dust
delivery moisture
QB/T1454--1992
not less than
not less than
not less than
not less than
not less than
not greater than
not more than
pieces/m2
not allowed
not allowed
not allowed
not allowed
not allowed
not allowed
not allowed
not allowed
not allowed
not allowed
For C grade book cover paper produced by rotary screen machine, the average smoothness of the front and back sides shall not be less than 20s, and the positive and negative contrast shall not be greater than 40%. 4.2
4.3 The fiber structure of paper should be evenly aligned, and the color tone of the same batch of paper should not have obvious differences. The degree of alignment and color tone should conform to the standard sample specified in the order contract. The cutting edge of the paper should be neat and clean.
4.4 The paper surface should be flat, and there should be no sand, hard blocks, folds, wrinkles, cracks, holes, obvious wool marks and other appearance defects that affect the use of paper. 4.5 When printing, the paper should not have obvious hair loss or powder loss. The end surface of the roll should be flat, with no more than 4 broken ends, and the broken ends should be firmly connected, and obvious marks should be placed at the broken ends. 4.6
The following conditions are second-class products, but no more than two items at the same time. a
Quantity exceeds the specified value by less than ±2%;
Breaking length is less than the specified value by less than 20%,
Dust content exceeds the specified value by less than 20%;
Gluing degree is less than the specified value by less than 0.25mm; Whiteness is less than the specified value by less than 3% (absolute value). 5 Test methodbZxz.net
Quantity is measured in accordance with GB/T451.2.
5.2Breaking length is measured in accordance with GB/T453. 5.3Smoothness is measured in accordance with GB/T456. 5.4Folding endurance is measured in accordance with GB/T457. 5.5Gluing degree is measured in accordance with GB/T460. 256
5.6Water content is measured in accordance with GB/T462.
5.7Dust content is measured in accordance with GB/T1541. 5.8 Whiteness shall be measured in accordance with GB/T8940.1. 6 Inspection rules
6.1 One batch is considered as one delivery, but not more than 30t. QB/T1454—1992
6.2 The manufacturer shall ensure that the products produced meet the requirements of this standard. When each piece (roll) of paper is delivered, a product quality certificate shall be attached. 6.3 Product delivery inspection shall be carried out in accordance with the provisions of GB/T2828. 6.4 Delivery inspection items and inspection level, sampling plan and qualified quality level (AQL) shall be as specified in Table 2. Table 2
Pieces (rolls)
1～25
26～90
91～280
Normal inspection Secondary sampling plan Inspection level 1 Class B nonconforming products
Sample size
Class C nonconforming products
Nonconforming classification
Nonconforming
Breaking length
Folding endurance
Nonconforming
Dust degree
Gluing degree
Smoothness
6.5 The purchaser has the right to inspect the quality of the products according to the requirements of this standard. If there is any objection, the supplier should be notified within three months after arrival for joint sampling inspection. If it does not meet the requirements of this standard, it will be judged as a batch nonconforming and the supplier will be responsible for handling it. 7 Marking, packaging, transportation, storage
7.1 Packing and marking shall be carried out in accordance with the provisions of GB/T10342 or the provisions of the order contract. 7.2 Paper shall be properly stored to prevent the influence of rain, snow, ground moisture and chemical gases. 7.3 Use canopied and clean transportation vehicles for transportation. 7.4 Do not drop paper from a height.
Additional instructions:
This standard is proposed by the Paper Industry Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Paper Standardization Center. This standard was drafted by Shanghai Qinfeng Paper Mill. The main drafters of this standard are Luo Zeqiang and Yao Meifen. From the date of implementation of this standard, the former Ministry of Light Industry standard QB27-1973 "Book Cover Paper" will be invalid. This standard adopts the Soviet national standard TOCT20283 "Cover Paper" by reference. 257
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