This part of GB/T 4857 specifies the conditions, equipment, procedures and test report contents of temperature and humidity conditioning treatment for transport packages and single cargoes. This part applies to the temperature and humidity conditioning treatment for transport packages and single cargoes. GB/T 4857.2-2005 Packaging Basic tests for transport packages Part 2: Temperature and humidity conditioning treatment GB/T4857.2-2005 Standard download decompression password: www.bzxz.net
This part of GB/T 4857 specifies the conditions, equipment, procedures and test report contents of temperature and humidity conditioning treatment for transport packages and single cargoes. This part applies to the temperature and humidity conditioning treatment for transport packages and single cargoes.

ICS55.020
National Standard of the People's Republic of China
GB/T4857.2—2005
Replaces GB/T1957.219S3
Basic tests for transport packages
Part 2: Temperature and humidity conditioning
Packaging-Basic tests for transport packages-Pari 2: Temperature and humidity conditioning (IS02233:20G0, MOD)
2005-05-25 release
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China
2005-11-01 implementation
(857 transport packaging This test is divided into 23 parts: Part 1: Marking method for each position during the test: Part 2: Temperature and humidity conditioning: Part 3: Front whip load stacking test square bricks; Part 4: Force test stone: Part 5 drop test method: Part 6: Drop test method!
Part ? Positive child fixed topic recording dynamic test method; Part 8: Negative table test method Part 6: Meeting! Part, Spray test method: Part 10: Full-mount real-frequency vibration test method Part 1: Horizontal impact test method Part 2: Water test method Part 13: Air pressure test method Part 4: Overturning test method Part 1: Horizontal impact test method Part 2: Water test method Part 3: Overturning test method using pressure test machine Part 17: General principles for preparing performance test data Part 19: Quantitative data of performance test personnel Part 2: Flow test information record Part 3: Impact test method Part 2: Test force method Part 22: Unit cargo acceptance test method Part 23: Random vibration test method GR/T 4857.2—2005
This part is the second part of GB/T4257: can be changed to adopt the international standard S233:2(0 warehouse complete. Full double transport
transport unit loan reading - test environment kill piece treatment more than 5/T817, 2-[S928 also installed: sign the initial packaging piece temperature and humidity adjustment book treatment single repair, compared with 102233 standard editing and protection, the main considerations are as follows: according to the habits of our users, The name of the original standard is retained, and the name is different from that of the international standard: the format of the heat shrinkable packaging is modified according to the practice; the relevant explanatory notes are reduced; the relevant technical definitions are deleted because my country has some deficiencies in the packaging terminology standard; the relevant contents of the test report are modified according to the actual conditions; the effectiveness of the test report is changed to the relevant contents of the test report. Compared with GB/T 133.2-2, the main changes are as follows: - In the specification, the original "only applicable to transport packaging" is changed to applicable to transport packaging and unit cargo; in the wet packaging, the conditions S and S are newly added. The conditions in the original standard are cancelled; the light allowance is divided into forging drop difference and average channel difference; the relevant interpretation is added. Appendix A of this part is an informative appendix.
GB/T 4857.2—2005
This part shall be in conformity with B/4857.2-1992 from the date of implementation. This part is proposed and attributed to the National Technical Committee for Packaging Standardization. The main drafting units of this part: China Machinery Production Promotion Bureau, the General Office of Packaging Engineering of the People's Liberation Army, the main drafting persons: Zhang Xiaokuai, Baqi, Guo Jiahua, 1 Scope
Basic tests on packaging for transport
Part 2 Temperature and humidity conditioning
CB/T 4B57.2—2005
This part of R/T4357 specifies the contents of the test report on the temperature conditioning treatment equipment for transport packaging and unit goods.
This part applies to the test principle of temperature and humidity conditioning of transport packaging and single goods.
The test sample is subjected to a certain temperature and humidity conditioning under the predetermined temperature and humidity conditions. Humidity adjustment treatment conditions
Based on the characteristics of the packaging materials that may be encountered during the circulation process, the temperature and humidity conditions in Article 3.1 and Article 3.2 are selected for temperature adjustment treatment: 3.1 Adjustment conditions
3.1, 1 humidity conditions are shown in Table 1 Temperature and humidity conditions
3.1.2 Allowable error
3.1.2.1.1 Report limit error
Temperature (public value)
Compared to (public nominal value)
No regulations
1 Condition 123 and vehicle less than 1 measurement 10 days compared with the public value of the allowable humidity error for other conditions: the maximum allowable temperature gain is 2? %. 1
GS/T 4857.2—2005bzxz.net
3.1.2.1.2 Average error
For all conditions, the average error for the nominal relative humidity value shall be 2%. 3.1.2.2 Relative humidity
3.1.2.2.1 Limit error
For all conditions, the average error for the nominal relative humidity value shall be 2%. 3.1.2.2.2 Average error rate
For products with incoming parts, the estimated relative humidity on the cabinet should be the main error rate. Note: the average error rate of the corresponding room should be less than 1, and the average error rate of each subsequent test should be obtained, or the average error rate of the received products should be continuously recorded. 3.2 Temperature and humidity adjustment and treatment equipment
4h.8h.16h.4hh, 72h or 7d, 11d.2ld, 28d: 4 ... 4.3 Measurement and recording The measuring and recording instruments shall have sufficient sensitivity, the temperature range is 0.1% and the relative humidity is 1%. The interval between each test record shall not exceed 5m, and the record shall be considered continuous. The temperature measurement and relative humidity shall refer to the attached data. While meeting the measurement accuracy requirements, the recording instrument shall have sufficient response speed to accurately record the change of humidity every 5 minutes. Place the test product in the workroom of the humidity chamber and place it on a rack so that the conditioned air can pass through the top and bottom area of ​​the test product to a volume of 75°C.
5.2 Choose transportation and storage conditions that are consistent with the test product as much as possible and avoid the specified turbulence period. The time selection shall comply with the provisions of Article 3.2. The temperature and humidity conditioning treatment time shall be counted from 1 hour after the specified conditions are met. 5.3 When the test sample has sufficient material with post-treatment phenomenon, such as red gun, etc., it is necessary to carry out drying treatment before temperature and humidity adjustment treatment. The specific method is: place the test piece in a dry environment for at least 24 hours, under the standard environment conditions, and when it is transferred back to the test conditions, the test product has absorbed the atmospheric air close to the normal relative humidity before the specified relative humidity is not higher than 0, and no drying treatment occurs. 6 Test report
Form The test report should include the following contents:
a) Test period:
1) Temperature and humidity adjustment period, brightness change and time; 2) Test site control and relative humidity; 3) Detailed description of the operation; 4) Any differences between the test method and the test method. 2
Appendix A
(Informative records)
Relative accuracy of temperature and relative humidity measurements A.1 The temperature and relative humidity records will show dramatic changes over time, with large records shown in Figure A1. Nominal low:
Related area,
A.2 The maximum value and the slope should be within the specified limit error range A.3 The average value of the light points should be within the specified average error range. CB/r4857.2—2005
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