QB/T 1709-1993 Industrial Parchment QB/T1709-1993 Standard Download Decompression Password: www.bzxz.net

Light Industry Industry Standard of the People's Republic of China
Industrial Parchment
Subject Content and Scope of Application
QB/T 1709—1993
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of industrial parchment. This standard applies to parchment used for industrial packaging of machine parts, instruments, chemicals, etc. Cited standards
GB/T450 Paper and paperboard sampling
GB/T451, 1. Determination of size and deflection of paper and paperboardDetermination of the basis weight of paper and paperboard
GB/T 451.2
GB/T 451. 3
GB/T 453
GB/T454
GB/T 457
GB/T462
Determination of thickness of paper and paperboard
Determination of tensile strength of paper and paperboard (constant rate loading method)Determination of bursting strength of paper
Determination of folding endurance of paper
Determination of moisture content of paper and paperboard
GB/T 1545.2
Determination of pH of aqueous extracts of paper, paperboard and pulpGB/T 2828
GB/T 10342
Batch inspection counting sampling procedures and sampling tables (applicable to continuous batch inspection)Paper packaging and marking
Standard atmosphere for handling and testing of pulp, paper and paperboard samplesGB/T 10739
3 Product classification
3.1 Industrial parchment paper is divided into roll paper and flat paper. 3.2 According to user requirements, industrial parchment paper can be processed with glycerin and produced in various colors. 4 Technical requirements and test methods
4.1 The technical indicators of industrial parchment paper must comply with the provisions of Table 1. Table 1
Indicator name
Breaking length
Burst resistance
Not less than
Average in longitudinal and transverse directionNot less than
Not less than
Approved by the Ministry of Light Industry of the People's Republic of China on 1993-04-15A level
Test method
GB/T 451.2
GB/T 451. 3
GB/T 453
GB/T454
Implemented on 1993-12-01
Indicator name
Not less than
Average in longitudinal and transverse direction45g/m*
60g/ms
75g/mm3
Oil permeability
pH of water extract Value
Not more than
QB/T1709--1993
Continued Table 1
pcs/100cm2
4.2 The size of the paper shall be in accordance with the order contract, the deviation shall not exceed ±3mm, and the deflection shall not exceed 3mm. 4.3 The cutting edge of the paper shall be neat.
4.4 The fiber weave of the paper shall be uniform and meet the requirements of the order contract. 4.5 The paper surface shall be flat and free of wrinkles, sand, tearing, hard blocks, severe wrinkles, streaks, and dirty spots. 5 Inspection regulations
The quantity delivered at one time is considered as a batch, but not more than 30. 5.1
Test method
GB/T 457
Appendix A
GB/T 1545. 2
GB/T 462
5.2 The manufacturer shall ensure that the industrial parchment paper produced meets the requirements of this standard, and a certificate of conformity shall be attached to each piece of paper. 5.3 The sampling inspection of product delivery shall be carried out in accordance with the provisions of GB/T2828, and the sample unit is roll (piece). 5.4 The sampling and pre-inspection treatment of the sample shall be carried out in accordance with the provisions of GB/T450 and GB/T10739. 5.5 The qualified quality level (AQL) shall be calculated according to the defective rate, and the counting sampling plan shall be specified in Table 2. Table 2
Sampling plan
Batch, roll (piece)
1～25bZxz.net
Inspection level 1
Normal inspection secondary sampling plan
Class B nonconforming products
Sample size
Class C nonconforming products
AQLm 6. 5
Classification of unqualified
Class B unqualified
Breaking length
Oil permeability
Class C unqualified
Spot quantity, tightness, tear resistance
Degree, pH value of water extract
Value, content, appearance quality
5.6 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 to 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.
6Marking, packaging, transportation, storage
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 exposure. 6.3 Do not use hooks to lift packing wires during transportation, and do not drop paper from heights. 6.4 Paper should be properly stored on pallets in ventilated warehouses to prevent it from being affected by rain, snow and ground moisture. 332
QB/T1709-1993
Appendix A
Determination of oil permeability
(Supplement)
A1 The collection and processing of samples should 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 (5 to 10 sheets). At room temperature, use cotton to dip into a 1% magenta glycerol aqueous solution, and gently apply it on the sample placed on a 100mm×100mm square frame pre-marked on white absorbent paper, apply it three times vertically and horizontally, and then calculate the red spots larger than 0.25mm in the square frame 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 instructions:
This standard was 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 Zhaohuan, and Jiang Quan. From the date of implementation of this standard, the former Ministry of Light Industry standards QB530-1973 "Industrial Parchment Paper" and QB613--1973 "Industrial Parchment Paper" will be invalid.
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