This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of photosensitive paper base paper. This standard applies to photosensitive paper made by coating, which is used as base paper for recording in instruments, meters, seismic oscilloscopes, etc. QB/T 1459-1992 Photosensitive paper base paper QB/T1459-1992 Standard download decompression password: www.bzxz.net

Light Industry Industry Standard of the People's Republic of China
Photographic Paper Base
1 Subject Content and Scope of Application
OB/T 1459
9—1992
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of photosensitive paper base. This standard applies to photosensitive paper made by coating, which is used as base paper for recording in instruments, meters, seismic oscilloscopes, etc. 2 Reference standards
GB/T450 Paper and paperboard sampling
GB/T451.1 Determination of size and deflection of paper and paperboard GB/T451.2 Determination of the basis weight of paper and paperboard Determination of the thickness of paper and paperboard
GB/T 451.3
Determination of the tensile strength of paper and paperboard (constant rate loading method) GB/T 453
Determination of the tear resistance of paper
GB/T 455.1
GB/T 456
GB/T 459
GB/T 462
Determination of the smoothness of paper and paperboard (Buick method) Determination of the elasticity of paper
Determination of the moisture content of paper and paperboard
GB/T 465.2
GB/T 1540
GB/T 1541
GB/T 2828
Determination of the tensile strength of paper and paperboard after being immersed in water for a specified timeDetermination of the water absorption of paper and paperboard (Cobber method)Determination of the dustiness of paper and paperboard
Batch-by-batch inspectionCount sampling procedure and sampling table (applicable to inspection of consecutive batches)GB/T 8940.1
GB/T 10342
GB/T 10739
3 Product classification
Determination of whiteness of paper and paperboard45/0 directional reflection methodPacking and marking of paper
Standards for handling and testing of pulp, paper and paperboard samples3.1 The base paper for photographic paper is roll paper with a width of 1100 mm and a diameter of (550 ± 10) mm or as specified in the order contract. 4 Technical requirements and test methods
4.1 The technical indicators of photosensitive paper base paper must comply with the provisions of Table 1. Table 1
Indicator name
Longitudinal tensile strength
Not less than
Not less than
Regulation approved by the Ministry of Light Industry of the People's Republic of China on April 14, 1992
Test method
GB/T 451.2
GB/T 451.3
GB/T453
1992-12-01 implementation
Transverse tearing strength
Wet strength
Transverse elasticity
Smoothness
Indicator name
Not less than
Not less than
Not less than
Both sides are not less than
Water absorption 60s
Not less than
Starting from 0.25mm, not more than
0.1~0.5mm2
Dust degree
Delivery moisture
More than 0.5~1. 0mm2
More than 1.01mm2
Not more than
Roll width is not allowed to exceed ±3mm.
QB/T1459--1992
Continued Table 1
pcs/m2
pcs/m2
The fiber structure of paper should be uniform and the surface should be smooth and greasy. 4.3
No
4.4 The cutting of paper should be neat and clean.
4.5 The paper surface should be flat and free of wrinkles, wrinkles, spots, sand and other appearance defects that affect the use of paper. Test method
GB/T 455.1
GB/T 465.2
GB/T 8940.1
GB/T 459
GB/T 456
GB/T 1540
Appendix A
GB/T 1541
GB/T 462
4.6 The whole width of each sheet of paper should be uniform, and the number of joints should not exceed 3. The joints should be firm and clean, without adhesion, and obvious markings should be made.
5 Inspection rules
5.1 The quantity delivered at one time is a batch, but not more than 30t. 5.2 The manufacturer shall ensure that the products produced meet the requirements of this standard, and a product quality certificate shall be attached to each sheet of paper when it is delivered. 5.3 Product acceptance inspection sampling shall be carried out in accordance with GB/T2828. Sample collection and processing shall be carried out in accordance with GB/T450 and GB/T10739. 5.4
Acceptance sampling plan, inspection level and qualified level (AQL) shall be carried out in accordance with Table 2. Table 2
Sample
91~~280
Normal inspection secondary sampling plan
Inspection level
Class B non-conforming products
Sample size
Class C non-conforming
Non-conforming classification
Non-conforming
Longitudinal tensile strength
Flexibility
Water resistance
Wet strength
Non-conforming
Transverse tearing
Smoothness
Dust
5.6 The purchaser has the right to inspect the product quality according to the provisions of this standard. If there is any objection to the product quality, the purchaser shall notify the supplier within three months after arrival for joint re-inspection or entrust the inspection department for re-inspection. If it does not meet the requirements of the judgment number of this standard, it shall be judged as a batch non-conforming and the supplier shall be responsible for handling it; if it meets the requirements of this standard, the purchaser shall be responsible for handling it. 274
Marking, packaging, transportation, storage
QB/T1459—1992
6.1 Carry out packaging marking in accordance with the provisions of GB/T10342. 6.2 When transporting and stacking, rolls must not be dropped from a height. 6.3 When transporting, use a canopy and clean transportation vehicle. 6.4 Paper should be properly stored to prevent it from being affected by rain, snow and ground moisture. 275
The sample should be taken in accordance with the provisions of GB/T450.
A2 Test reagents and instruments
A2.14% chemically pure nitric acid solution.
A2.22% chemically pure potassium ferrocyanide solution. A2.3 Acid-resistant water tank. bZxz.net
A2.4 Stopwatch.
A2.5 This clip.
A3 Test steps and result calculation
QB/T 1459—1992
Appendix A
Method for determination of metallic iron content in photosensitive paper
(Supplement)
A3.1 Cut two 100mm×100mm test pieces from the full-width paper sample, immerse them in a water tank containing a mixed solution of 4% nitric acid and 2% ferrous potassium chloride (ratio 1:1) for 10 minutes, take them out, wash them with water and air-dry them, check the blue spots on the paper surface, and calculate the number of points. A3.2 The test results are expressed as the arithmetic mean of the measured values ​​of the two samples converted into 1m2 content. Additional remarks:
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 Shanghai Xinfeng Copper Net Paper Factory. The main drafter of this standard is Zhang Hanzhong.
From the date of implementation of this standard, the former Light Industry Ministry Standard QB745--1980 "Photosensitive Paper Base Paper" will be invalid.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.