This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of fine parchment paper. This standard applies to fine parchment paper used in the national defense industry. QB/T 1711-1993 Fine parchment paper QB/T1711-1993 Standard download decompression password: www.bzxz.net

Light Industry Standard of the People's Republic of China
Extra Fine Parchment
Subject Content and Scope of Application
QB/T 1711---1993
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of extra fine parchment. This standard applies to extra fine parchment used exclusively in the national defense industry. Cited standards
Taking samples of paper and paperboard
GB/T 450
GB/T 451.1
GB/T 451.2
GB/T 451.3
Determination of size and deflection of paper and paperboardDetermination of basis weight of paper and paperboard
Determination of thickness of paper and paperboard
Determination of tensile strength of paper and paperboard (constant rate of load method) GB/T 453
GB/T 457
GB/T 462
GB/T 463
GB/T1541
Determination of folding endurance of paper
Determination of moisture content of paper and paperboard
Determination of ash content of paper and paperboard
Determination of dustiness of paper and paperboardbzxz.net
GB/T 1545.2
GB/T 2828
GB/T 10342
GB/T 10739
3 Product classification
Determination of pH value of aqueous extracts of paper, paperboard and pulpBatch inspectionCount sampling procedure and sampling table (applicable to inspection of continuous batches)Paper packaging and marking
Standard atmosphere for sample handling and testing
Pulp, paper and paperboard
Extra fine parchment is roll paper.
4 Technical requirements and test methods
4.1 The technical indicators of ultra-fine parchment paper must comply with the provisions of Table 1. Table 1
Indicator name
Breaking length
Folding endurance
Oil permeability
Vertical and horizontal average
Vertical and horizontal average
Not less than
Not less than
Not more than
pieces/100cm2
Approved by the Ministry of Light Industry of the People's Republic of China on April 15, 1993 338
31.0±2.0
Test method
GB/T 451.2
GB/T451.3
GB/T 453
GB/T457
Appendix A
1993-12-01 implementation
Indicator name
Not more than
pH value of water extract
Acetaldehyde treatment of paper
Dust degree
0.2mm2~1.5mm2
More than 1.5mm2
Not more than
QB/T1711-1993
Continued Table 1
Pieces/m2
No deformation
Not allowed
Test method
GB/T463
GB/T1545.2
See Article 4.7
GB/T 1541
GB/T 462
4.2 The width of the paper roll is 600~650mm, the diameter is 300～350mm, and the weight of each roll is (50±5)kg, or as specified in the order contract. 4.3 The inner diameter of the roll core is 75mm, and its width is the same as the paper width. 4.4 The light transmittance of the paper should be uniform, without cloud patterns, light transmittance points and spots, and the paper surface should not have folds, wrinkles, protruding pulp blocks, corrugations and streaks.
5 The paper should not have cracks or holes visible to the naked eye. 4.5
5 The paper is natural in color and is not colored with dyes. 4.6
Ether treatment of paper: Put 100mm×40mm extra-fine parchment paper into a 200～~250mL beaker, inject ether, and take out the paper strip after 1min4.7
. After the ether evaporates, the paper strip should be the same as before treatment, luminous and transparent. The test should not be less than three times. 5 Inspection rules
5.1 One batch is a delivery, but not more than 1t. 5.2 The manufacturer shall ensure that the extra-fine parchment paper produced meets the requirements of this standard, and each piece of paper shall be delivered with a certificate of conformity. 5.3 Product delivery inspection sampling shall be carried out in accordance with the provisions of GB/T2828, and the sample unit is roll. 5.4 Sample collection shall be carried out in accordance with the provisions of GB/T450. 5.5 Sample processing and test standard atmosphere shall be carried out in accordance with the provisions of GB/T10739. 6 Acceptable quality level (AQL) is calculated according to the defective rate, and the counting sampling plan shall be as specified in Table 2. 5.6
Batch, tube
Sampling plan
26～90
Inspection level I
Normal inspection secondary sampling plan
Class B nonconforming products
Sample size
Class C nonconforming products
Nonconforming classification
Class B nonconforming
Breaking length
Folding endurance
Oil penetration
Class C nonconforming||t t||Quantitative quantity, bursting strength, ether treatment, dustiness, pH value of water extract, moisture content, appearance quality
5.7 If the buyer has any objection to the batch of products, he shall notify the supplier within three months after the arrival of the goods, and jointly sample and inspect the batch of products. If the inspection result does not meet the requirements of this standard, the batch shall be judged as unqualified and the supplier shall be responsible for handling; if the inspection result meets the requirements of this standard, the batch shall be judged as qualified and the buyer shall be responsible for handling.
Marking, packaging, transportation, storage
QB/T1711--1993
6.1 The packaging and marking of paper shall comply with GB/T10342 or the provisions of the order contract. 6.2 During transportation, a canopy and clean transportation vehicle shall be used to prevent sun and rain. 6.3 During transportation, it is not allowed to use hooks to hang packing wires, and paper pieces shall not be thrown from high places. 6.4 Paper should be properly stored on a pad in a ventilated warehouse to prevent it from being affected by rain, snow and ground moisture. 340
QB/T 1711—1993
Appendix A
Determination of oil permeability
(Supplement)
A1 The sampling and processing of the sample shall be carried out in accordance with the provisions of GB/T450 and GB/T10739. A2 Determination of oil permeability
A2.1 Take a 250mm×250mm sample and place it on a stack of white absorbent paper (510 sheets). At room temperature, use cotton to dip in a 1% magenta glycerol aqueous solution and gently apply it on the sample placed on the white absorbent paper where a 100mm×100mm square is pre-marked. Apply it three times vertically and horizontally, and then count the red spots larger than 0.25mm in the square of the white absorbent paper below the sample. A2.2 Take 5 samples from each piece for testing, and take the arithmetic mean of the test results of the 5 samples as the result. Note: The concentration of glycerol aqueous solution is 50%.
Additional Notes:
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 the West Factory of Shandong Paper Factory. The main drafters of this standard are Wang Renchuan, Dai Wanpeng, Zhang Zhaozhong, and Jiang Quan. From the date of implementation of this standard, the former Ministry of Light Industry standards QB609-1973 "Extra Fine Parchment Paper" and QB615-1973 "Extra Fine Parchment Base Paper" will be invalid.
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